Merlin Gerin MCset Metalclad switchgear with withdrawable circuit breaker 1-24kV

Transcription

1 Merlin Gerin MCset Metalclad switchgear with withdrawable circuit breaker 1-24kV

2 Contents MCset presentation 2 MCset range 10 Presentation 10 Technical characteristics 12 Operating conditions 13 Protection of people 14 Internal arc protection 14 Dependable mechanical control devices 15 Choice of functional units 16 Cubicle description 18 AD type cubicles incomer and feeder 18 CL - GL type cubicle line-up bussectioning 20 TT type cubicles metering and busbar earthing 22 DI type cubicles switch-fuse feeder 23 Protection, monitoring and control 24 The protection system 24 Sepam Instrument transformers 30 Switchgear 34 Withdrawable parts 34 LF Circuit breaker 36 SF circuit breakers 40 Rollarc contactor 44 DI switch cubicle 48 Withdrawable part extraction 51 Installation 52 Implementation examples 52 Connections 54 Cubicle equipment 56 Current transformers (Selection guide) 58 A few references 59 1

3 MCset presentation Field of application MCset adapts to all electrical power distribution requirements from 1 to 24 kv. MCset is an indoor, metal-clad switchgear unit intended for the MV section of HV/MV substations and high power MV/MV substations. for all your applications: power station auxiliary substations industrial process substations MCset offers you: pre-engineered and adaptable solutions tailored to your specific requirements significantly reduced maintenance local support centres throughout the world. MCset gives you the advantages of: continuity of service for your networks enhanced safety for your staff and operations optimized investment throughout the life of your installation the possibility of integrating your Medium Voltage switchboard in a monitoring and control system

4 MCset presentation Field of application E72897 The MCset offer Protection and control of medium voltage switchboards is possible at three levels: the MCset cubicle: MV switchgear and connections transformers (current, voltage, etc.) auxiliaries (earthing switch, lightning arresters) the protection, monitoring and control unit for each cubicle: pre-engineered low voltage systems, based around the Sepam offer custom designed systems. monitoring and control software for your electrical installation allowing you to manage your MCset switchboard. 3

5 MCset presentation The experience of a world leader Schneider has equipped medium voltage networks with switchgear and protection, monitoring and control solutions for over 40 years. The MCset range benefits from the cumulated experience of an equipment base of over 100,000 functional units, 200,000 MV circuit breakers and 300,000 MV digital protection functions. MCset: the advantage of experience 1950, invention of the factory-built cubicle concept 1974, Merlin Gerin's first factory-built switchboard combining breaking and protection 1985, invention of the digital protection, monitoring and control unit concept (Sepam range) 1989, first integrated protection circuit breaker in the world without an auxiliary power supply 1996, market launch of MCset E : Belledonnne 1980: Fluair 1987: Venus 1996: MCset In choosing MCset, you have the key advantages of: the extensive experience of the world leader in medium voltage a host of solutions derived from the most modern concepts a comprehensive solution designed to meet the most exacting standards of professionals involved in installing and operating public or private networks. 4

6 MCset presentation Continuity of service and complete safety MCset is solidly based on extensive experience acquired throughout the world and provides your networks with a high level of dependability and safety. MCset integrates a host of innovative solutions designed around proven techniques: high performance switchgear, digital protection, monitoring and control systems, enclosures capable of withstanding internal arcing. From its very conception, MCset has taken account of three key user requirements: E74402 Reliability type testing was carried out for each performance level in the MCset range three-dimensional computer modeling techniques were used to study the electrical fields the design, manufacturing and testing of MCset was carried out according to ISO 9000 quality standards. E40318 Simplicity a user interface which is easily understood by everybody interlocks and padlocks preventing operator errors Sepam-type protection units enabling on-site information retrieval without any additional devices maintenance limited to simple, routine operating checks and cleaning and greasing every 5 to 10 years easy installation due to identical civil engineering dimensions for all cubicles and installation being possible against a wall. Safety operations are all performed from the front, including access to connections and busbars racking in and out is only possible with the door closed the power-on indicator is situated on the front of the functional unit the earthing switch has making capacity one single anti-reflex handle is used for all MCset operations internal arc withstand developed for all functional units. 5

7 MCset presentation MCset, a comprehensive solution E74391Monitoring and control Optimizing your power supply means finding ways of reducing direct and indirect costs and ensuring continuity of service. To achieve this you need to know more about the way your electrical installation operates: protection plan, consumption, disturbances, harmonics pollution, etc. Mastering your power from A to Z E74392 Operating costs Operating and maintaining real time network information identifying available capacity preventive maintenance printing of reports. Ensuring power quality detecting problems through anticipation diagnosing disturbances due to harmonics monitoring neutral point currents. Availability of supply Minimizing power cuts diagnosing network faults managing the network from a remote site trouble shooting assistance network reconfiguration following a fault. Enhancing reliability detecting voltage disturbances providing automatic source transfer monitoring the protection plan managing the load sustaining plan. Power consumption Reducing energy costs managing peaks in consumption optimizing your power contract improving the power factor automatic load shedding. Saving energy analyzing operating trends making users aware of costs internal cost allocation. 6

8 MCset presentation MCset, a comprehensive solution E72995 Protection and control Real time circuit breaker monitoring circuit breaker position (open, closed, tripped) trip threshold, load percentage fault diagnosis, information on causes of tripping. Circuit breaker control remote control through the communication system (open / closed) automatic control diagram display. E61868 monitoring and control solutions Protection, monitoring and control units (Sepam) for functional units A standard power logic system (SMS) software package for installation control Integration of MCset in all monitoring and control systems: communication with a Modicon plc unit open-endedness through a standard protocol (Modbus). Customizing the system to meet your exact requirements. 7

9 MCset presentation MCset, a comprehensive solution E74393 Modernizing Specifying Schneider Services, by your side throughout the life of your installation Specifying We help you to define your solutions: selection guide, technical assistance, advice Implementing We oversee the completion and commissioning of your installation: design, cost optimization, guaranteed performances and dependability, commissioning tests, etc. Operating Implementing Operating We help run your daily operations in real time: maintenance contract, technical assistance, supply of replacement parts, corrective and preventive maintenance, operation and maintenance training, etc. Modernizing We can bring the performance of your installation up to date: installation audit, switchgear diagnosis, adaptation and modification, end of life recycling, etc. Examples of services provided Warranty extension: A warranty extension is proposed if your installation is checked by ourselves before being commissioned. E74403 Circuit breaker-contactor diagnosis: Throughout the life of the equipment, it is possible to carry out routine measurement of its characteristics in order to optimize maintenance. This service may be part of a global installation maintenance contract. End-of-life recycling: Schneider Services has an operational subsidiary allowing you to recycle your medium voltage switchgear. 8

10 MCset presentation Quality assurance - environment E74395 Certified quality: ISO 9001 A major asset In each of its units, integrates a functional organization whose main role is to check quality and monitor compliance with standards. This procedure is: uniform throughout all departments; recognized by many customers and approved organizations. But above all, it is its strict application that has allowed us to obtain the recognition of an independent organization: the French Quality Assurance Association (AFAQ). The quality system for the design and manufacture of MCset is certified to be in conformity with the requirements of ISO 9001 and ISO 9002 quality assurance standards. E74218 Strict and systematic checks During its manufacture, each MCset is subject to systematic routine testing, intended to check both quality and conformity: sealing test filling pressure test measuring of opening and closing speeds measuring of operating torque dielectric test testing of safety systems and interlocks testing of low voltage components conformity with drawings and diagrams. The results obtained are given by the quality control department on each device s test certificate. E74404 Protecting the environment As part of the group s environmental policy, Schneider Services provides you with an operational subsidiary to recover medium voltage switchgear and thus eliminate any discharge to atmosphere. In order to help you protect the environment and to relieve you of any concerns in terms of stock or dismantling, Schneider Services offers to take back your equipment at the end of its life. MCset has been designed with environmental protection in mind: the materials used, insulators and conductors are identified, easily separable and recyclable the SF6 can be recovered at the end of the equipment s life and reused after treatment production sites are certified to ISO

11 Presentation E74405 MCset range 10

12 MCset range Presentation Make up of an MCset switchboard MCset switchboards are made up of several interconnected functional units. Power connections are made between functional units within a switchboard via a single busbar. The electrical continuity of all metal frames is provided by the connection of each functional unit s earthing busbar to the switchboard s main earthing circuit. Low voltage wiring trays are provided in the switchboard above the low voltage compartments. LV cables can enter the switchboard through the top or bottom of each functional unit. Description of a functional unit A functional unit comprises all equipment in the main and auxiliary circuits which together provide a protection function. Each functional unit combines all the components which are required to fulfil this function: the withdrawable part the cubicle the protection, monitoring and control system. The cubicle The cubicle is of metal-clad type as defined by IEC standard 60298, in other words the medium voltage parts are compartmented using metal partitions which are connected to earth and which separate: the busbars the withdrawable part (circuit breaker, fuse-contactor, disconnector truck or earthing truck) MV connections, earthing switch, current sensors and voltage transformers as required. The low voltage auxiliaries and monitoring unit are in a fourth compartment separated from the medium voltage section. Four basic cubicle layouts are offered: incomer or feeder AD line up bussection CL - GL busbar metering and earthing TT switch-fuse feeder DI Cubicles of type AD and CL have withdrawable switchgear. The protection, monitoring and control system This includes: Sepam, protection, monitoring and control unit current sensors, which may be of 3 types: phase and zero sequence current transformers core balance CT s non-magnetic Rogowski coils (CSP type). voltage transformers zero sequence core balance CT s (CSH type). The withdrawable part This includes: the circuit breaker or contactor with its closing and opening mechanism, the disconnector truck or the earthing truck the lever-type propulsion mechanism for racking in-out interlocks to fix the withdrawable part on the fixed part either in service position or disconnected. 11

13 MCset range Technical characteristics E72902 The values below are given for normal operating conditions as defined in IEC and Rated voltage (kv) Rated insulation level Power frequency withstand voltage Hz - 1mn (rms.kv) Lightning impulse withstand voltage 1.2/50µs (kv peak) Nominal current and maximum short term withstand current (1) Functional unit with circuit breaker Short time withstand current Ith max (ka/3s) (ka/1s) Rated current In max JdB (A) Rated current In CB. (A) (3) 3150 (3) 3150 (3) 2500 Functional unit with fuse-contactor (2) Short time withstand Ith max (ka) 50 (4) 50 (4) current Rated current In max (A) Functional unit with switch-fuse (cellule DI) Short time withstand Ith max (ka) 50 (4) 50 (4) 31.5 (4) 31.5 (4) current Rated current In max y (A) Internal arc withstand (3) (ka / 1 s) (ka / 0.15 s) (1) For functional units equipped with circuit breakers or fuse-contactors, the breaking capacity is equal to the short time withstand current. In all cases, the device peak making capacity is equal to 2.5 times the short time withstand current. (2) Lightning impulse dielectric impulse withstand voltage = 60 kv peak. (3) For greater values: please consult us. (4) Limited by fuses. 12

14 MCset range Operating conditions E74219 E74220 Operating conditions Normal operating conditions, according to IEC for indoor switchgear ambient air temperature: less than or equal to 40 C less than or equal to 35 C on average over 24 hours greater than or equal to -5 C. altitude: less than or equal to 1000 m above 1000 m, a derating coefficient is applied (please consult us). atmosphere: no dust, smoke or corrosive or inflammable gas and vapor, or salt. (clean industrial air) humidity: average relative humidity over a 24 hour period, less than or equal to 95%, average relative humidity over a 1 month period, less than or equal to 90%, average vapor pressure over a 24 hour period y 2.2 kpa, average vapor pressure over a 1 month period y 1.8 KPa. Specific operating conditions (please consult us) MCset has been developed to meet the following specific conditions: marine applications (installation of MCset switchboard on boats, off-shore rigs) earthquake withstand application (MCset switchboards can be installed in areas with a high seismic risk) temperature (possible derating) corrosive atmospheres, (possible adaptation). Storage conditions In order to retain all of the functional unit s qualities when stored for prolonged periods, we recommend that the equipment is stored in its original packaging, in dry conditions sheltered from the sun and rain at a temperetaure of between -25 and +55 C. Standards The MCset range meets the following international standards: IEC 60694: clauses common to high voltage switchgear IEC 60298: metal-enclosed switchgear for alternating current at rated voltages of between 1 and 52kV IEC 60056: high voltage alternating current circuit breakers IEC 60470: high voltage alternating current contactors IEC : high voltage alternating current switches IEC : high voltage fuses IEC 60129: alternating current disconnectors and earthing switches IEC 60255: measurement relay and protection unit (Sepam) IEC : current transformers IEC : voltage transformers. 13

15 MCset range Protection of people Internal arc protection E74396 E74397 Standard IEC appendix AA gives a method for testing metal-enclosed switchgear under internal arcing fault conditions. This test aims to show that an operator present in front of an MCset switchboard during an internal fault will not be at risk from the effects of this arc. MCset switchboard fitted against the wall MCset internal arc (in conformity with IEC appendix A-A) Internal arc version: MCset is designed to withstand and protect operators in the case of failure due to an internal arc. It is in conformity with appendix AA of standard IEC and has been successfully tested using type tests relative to this standard. MCset proposes several options to install an internal arc switchboard. 3-sided internal arc protection. For an MCset switchboard fitted against a wall, access to the rear of the cubicle is impossible. Internal arc protection on 3 sides is sufficient. 4-sided internal arc protection. In the case of an MCset switchboard installed in the middle of a room, internal arc protection on 4 sides is necessary in order to protect an operator who goes behind the cubicle. installation in a room with limited ceiling height Ceiling height of between 2.8 and 4 metres, it is necessary to install a tunnel above the switchboard. This is in order to channel off the hot gas (due to the effects of internal arcing) in order to avoid the gases moving towards any operators present Ceiling height of over 4 metres: tunnel not compulsory Internal arcing detector MCset has a system enabling the detection of internal arcing and disconnecting of internal power supply in order to limit the duration of the fault to less than 140 ms. This system incorporates an electro-mechanical fail-safe trip system, located on the cubicle flaps. This unit transmits information to Sepam to give the circuit breaker upstream of the fault the opening order. MCset Basic version (gas exhaust): MCset is designed to offer a good level of safety by eliminating the effects of internal arcing due to: metal flaps positioned above the enclosure, which in the case of internal fault, limit overpressure in the compartments, channelling and evacuating hot gases to the outside, eliminating the hazard for the operator. nonflammable materials used for the cubicle. MCset switchboard with rear access E74398 MCset switchboard with limited ceiling height 14

16 MCset range Protection of people Dependable mechanical control devices E34427 All operations are carried out from the front face, including access to connections and busbars. The user is guided through icon-diagrams on each front panel making it easy to understand the operating sequence and device status. Interlocks and padlocks prevent operator errors. Several additional levels of security also protect operators: racking in and out is only possible with the door closed the very extensive set of mechanical and electrical interlocks do not allow operator error. These can be added to by key locks or padlocks according to specific operating procedures. Each selector can be fitted with one to three padlocks. all operations are carried out from the front face, including access to connections and busbars the voltage present indicator is located on the front face of the functional unit, in the immediate vicinity of the earthing switch control. Options disarming of circuit breaker when racking out. This function enables the circuit breaker control springs to be disarmed during the extraction operation disabling of racking in. This function disables the possibility of racking the withdrawable part in if the front pannel (cable compartment) is not installed. 15

17 MCset range Choice of functional units The MCset range comprises 13 functional applications. The table below can be used to link requirements to functional units and gives basic information on the general composition of each unit. Selection guide: We want to supply power to a transformer. The chosen solution is a transformer feeder/breaker. The corresponding functional unit will therefore be a TF-B, comprising a AD cubicle equipped with a withdrawable circuit breaker, and a type T Sepam. Function Incomer (1) Feeder Line Transformer Generator Line Transformer Transformer Functional unit LI-B TI-B GI-B LF-B TF-B TF-S Cubicle AD (1 to 4) AD (1 to 4) AD (1 to 4) AD (1 to 4) AD (1 to 4) DI (2-4) Device Circuit breaker Circuit breaker Circuit breaker Circuit breaker Circuit breaker Fuse-switch Protection, monitoring and control unit Sepam 2000S Sepam 2000T Sepam 2000G Sepam 2000S Sepam 2000T Sepam S Sepam T Sepam S Sepam T Single line diagrams E23491 E23492 E32140 (optional voltage transformers) (1) The direct incomer (functional unit without a circuit breaker, equipped with a fixed busbar bridge) is produced using cubicles AD1-2-3 for U y to 17.5 kv For the 24 kv version, the direct incomer is produced using a specific cubicle: RD4. (2) Upstream current transformer impossible for cubicle CL A. 16

18 MCset range Choice of functional units Feeder Bussectioning Metering and busbar earthing Motor Motor Capacitor Capacitor Switchboard Sub-station MF-B MF-C CB-B CB-C BS-B SS-B BB-V AD (1to 4) AD1 AD (1 to 4) AD1 CL (1 to 4) and AD (1 to 4) TT (1-2-4) GL (1 to 4) Circuit breaker Fuse-contactor Circuit breaker Fuse-contactor Circuit breaker Circuit breaker Sepam 2000M Sepam 2000M Sepam 2000C Sepam 2000C Sepam 2000B Sepam 2000S Sepam M Sepam M Sepam B Sepam S E23492 E23493 E23492 E23493 E38177 E23492 E32139 (optional auxiliary transformers) (optional instrument transformers) (2) (optional voltage transformers) 17

19 Cubicle description AD type cubicles incomer and feeder AD1, AD2, AD3 E28521 E28525 E74407 AD1 AD2 E74406 MV compartments 1 busbars for cubicle interconnection 2 withdrawable part (circuit breaker LF1-2-3, contactor R400-R400D equipped with fuse disconnector truck or earthing truck) 3 MV connections by cables accessible from the front face 4 earthing switch 5 current sensors 6 voltage transformers (optionally equipped with withdrawable fuses). LV compartment 7 low voltage auxiliaries and the protection, monitoring and control unit are in a compartment which is separated from the medium voltage part AD3 Characteristics Rated voltage Rated insulation level kv kv, rms. 50 Hz - 1 mn kv, impulse 1,2/50 µs Rated current A (3) Breaking capacity ka Short time withstand current (ka rms. 1 s) Short time withstand current (ka rms. 3 s) Dimensions and weight H (mm) W (mm) D (mm) (2) Weight (kg) (1) limited by fuses (2) overall mm for 4-sided internal arcing protected switchboards. (3) for greater values: please consult us. 18

20 Cubicle description AD type cubicles incomer and feeder (cont) AD4 E74408 E74409 AD4 MV compartments 1 busbars for cubicle interconnection 2 withdrawable part (SF1-2 circuit breaker, disconnector truck or earthing truck) 3 MV connections by cables accessible from the front face 4 earthing switch 5 current sensors 6 voltage transformers (optionally equipped with withdrawable fuses). LV compartment 7 low voltage auxiliaries and the protection, monitoring and control unit are in a compartment which is separated from the medium voltage part AD1 AD1 contactor AD2 AD3 AD4 7,2 12 7,2 12 7, ,5 7, , ,5 31,5 50 (1) 50 (1) , ,5 31,5 31,5 31,5 50 (1) 50 (1) , ,5 31,5 31,5 31,5 50 (1) 50 (1) , ,5 16 or

21 Cubicle description CL - GL type cubicle line-up bussectioning The bussectioning functional unit comprises 2 cubicles mounted side by side (one cubicle equipped with a circuit breaker, the other with a busbar return). CL1, CL2, CL3 E74410 E74411 CL1-2-3 and GL1-2-3 GL1, GL2, GL3 GL1, GL2, GL3 MV compartments 1 busbars to connect the bussectioning functional unit with other switchboard functional units 2 withdrawable part (circuit breaker LF1-2-3, contactor R400-R400D equipped with fuses, disconnector truck or earthing truck) 3 current sensors 4 voltage transformers (optionally equipped with withdrawable fuses) LV compartment 5 low voltage auxiliaries and protection, monitoring and control unit are in one compartment, separated from the medium voltage part. Characteristics Rated voltage Rated insulation level kv kv, rms 50 Hz - 1 mn kv, impulse 1,2/50 µs Rated current A Breaking capacity ka Short time withstand current (ka rms. 1 sec) Short time withstand current (ka rms. 3 sec) Dimensions and weight H (mm) W (mm) D (mm) (1) Weight (kg) (1) overall mm for 4-sided internal arcing protected switchboards. 20

22 I on O off A V/H W/j Wh clear alarm reset trip L L L M Cubicle description CL - GL type cubicle line-up bussectioning CL4 E74463 E74413 W GL4 MV compartments 1 busbars to connect the bussectioning functional unit with other switchboard cubicles 2 withdrawable part (circuit breaker SF1-2, disconnector truck or earthing truck) 3 current sensors 4 voltage transformers (optionally equipped with withdrawable fuses) LV compartment 5 low voltage auxiliaries and protection, monitoring and control unit are in one compartment, separated from the medium voltage part. CL1 / GL1 CL2 / GL2 CL3 / GL3 CL4 / GL4 7,2 12 7, ,5 7, , ,5 31, , ,5 31,5 31,5 31, , ,5 31,5 31,5 31, , , (x 2) 700 (x 2) 900 (x 2) (x 2) 650 (x 2) 750 (x 2) 800 (x2) 21

23 Cubicle description TT type cubicles metering and busbar earthing TT1, TT2 E72906 E28523 TT1 TT2 E74414 E74415 TT4 E74416 TT4 MV compartments 1 busbars to connect the DI functional unit with other switchboard cubicles 2 switch - earthing switch 3 MV fuses LV compartment 4 Low voltage auxiliaries and the protection, monitoring and control unit are in a compartment which is separate from the medium voltage part. Characteristics TT1 TT2 TT4 Rated voltage kv Rated insulation level kv, rms. 50 Hz - 1 mn kv, impulse 1.2/50 µs Rated current A 630 (busbar intensity) Short time withstand current (ka rms. 1 s) Short time withstand current (ka rms. 3 s) or 25 Dimensions and weight H (mm) W (mm) D (mm) (1) Weight (kg) (1) overall mm for 4-sided internal arcing protected switchboards. 22

24 Cubicle description DI type cubicles switch-fuse feeder DI2 E74417 DI2 E74419 E74424 DI4 E74425 DI4 MV compartments 1 busbars to connect the DI functional unit with other switchboard cubicles 2 switch - earthing switch 3 MV fuses LV compartment 4 Low voltage auxiliaries and the protection, monitoring and control unit are in a compartment which is separate from the medium voltage part. Characteristics DI2 DI4 Rated voltage kv ,5 24 Rated insulation level kv, rms. 50 Hz - 1 mn kv, impulse 1.2/50 µs Rated current A 200 Breaking capacity ka (2) Short time withstand current (ka rms.) (2) Dimensions and weight H (mm) W (mm) D (mm) (1) Weight (kg) (1) overall mm for switchboard internal arcing 4 sides. (2) limited by fuses. DI cubicles including a fuse switch are used to supply power and protect low power transformers. E.g.: auxiliary service transformers in primary sub-stations. All operations are carried out from the front face, including access to connections and busbars. All functional interlocks meet recommendations in IEC 60298: the switch is only possible to close if the earthing switch is open and the connection access panel is in place closing of the earthing switch is only possible if the switch is open opening of the access panel to medium voltage connections and fuses is only possible of the earthing switches upstream and downstream of the fuses are closed. the switch is locked in the open position when the access panel is taken off. The voltage presence indicator is situated on the front face of the functional unit, integrated in the switch s control panel. 23

25 Protection, monitoring and control The protection system Each MCset functional unit is equipped with a comprehensive protection, monitoring and control system comprising: instrument transformers to measure the necessary electrical values (phase current, residual current, voltages, etc.) protection relays, providing functions adapted to the part of the network to be protected metering equipment, to inform operators low voltage relaying, i.e. to provide control of the breaking device (contactor or circuit breaker) and of the withdrawable part various auxiliaries: secondary circuit test units, etc. E

26 Protection, monitoring and control Sepam range E61868R Sepam: protection, monitoring and control units Sepam is a range of digital monitoring protection and control units. Sepam is at the centre of the protection, monitoring and control system for MCset functional units: all the necessary protection, metering, control, monitoring and signalling functions are carried out by Sepam. Like the MCset range, the Sepam range is a range of units defined to provide an optimal solution for each application, and includes: Sepam S, sub-station incomer and feeder Sepam B, bussectioning Sepam T, transformer feeder Sepam M, motor feeder Sepam C, capacitor feeder Sepam G, generator feeder. Sepam and Sepam 2000 The Sepam range hinges around 2 functional and hardware bases: Sepam 2000, focused on performance, covers all MCset functional applications Sepam , simple and modular, offers an optimized solution for most common applications. The Sepam offer panorama presents the major functional differences between Sepam and Sepam 2000 on pages E58152 Modbus communication architecture Sepam advantages Sepam, a digital multi-functional protection unit, provides you with the following advantages: simple to use for better daily efficiency: user-machine interface (UMI) which is ergonomic and which provides comprehensive and clear information to operators simple to incorporate: flexibility and user friendliness of parameter setting software, simplified tests money saving: integrating all functions required in one single, ready to use product upgradable solution, to spread the cost of investment over time centralized MCset switchboard management: Sepam is easily integrated into all network control systems, due to its Modbus communication interface. all data required for installation monitoring and control are accessible through the Modbus communication. better network knowledge through the oscillo-disturbance recording function and measurement of the imbalance ratio, motor operation parameters, etc. improving continuity of service through effective preventive equipment maintenance using switchgear diagnosis functions: time and number of operations, sum of breaking currents A 2, etc. through clear and comprehensive information, both locally and remotely, reducing the time needed to act in the event of a fault. 25

27 Protection, monitoring and control Sepam 2000 E61786R Sepam 2000, for all applications The Sepam 2000 range of digital protection, monitoring and control units provides a comprehensive solution for all applications: sub-station, busbar, transformer and motor, as well as generators and capacitors. Different types of Sepam 2000 are proposed for each type of equipment to be protected. For example, there are 30 different types of Sepam 2000 dedicated to protection, monitoring and control of transformers. Each Sepam 2000 is an optimized solution, designed to provide an exact response to the actual requirements of a functional application, including all the required functions, ready to use. Sepam 2000 Focused on performance, Sepam 2000 includes the following functions: metering functions: measurement of current and voltage, measurement of power and active and reactive energy, etc. protection functions: directional phase and earthing protection, differential transformer or machine protection, etc. monitoring and control functions: in its function as a programmable logical controller, Sepam 2000 is pre-programmed to carry out standard monitoring and control functions, and can be reprogrammed to handle any specific automatic control function! E61780 To choose the type of Sepam 2000 best suited to your application, the "Sepam range" catalogue includes selection charts for the whole Sepam 2000 range. (document AC0401). A "Sepam 2000 Selection Guide" software package is also available for computeraided selection of Sepam 2000 for a given application.protection, monitoring and control 26

28 Protection, monitoring and control Sepam / Sepam HD Sepam , for the most common applications Sepam is a new range of protection, monitoring and control units which are both cost-effective and high performance. Sepam , a simple solution: a lean catalogue adapted to the following typical applications: line incomers and feeders, transformers, motors and busbars ready to use, with integrated settable breaking device control ergonomic user-machine interface (UMI) for intuitive use Sepam , a modular solution To adapt to increasing numbers of applications, and to allow the installation to be upgraded at a later date: choice between 2 user-machine interfaces (UMI): a basic UMI, or an advanced UMI with graphic LCD screen and keypad. The advanced UMI can be remotely located and its screens can be customized in all languages. functional enhancement with optional additional modules: on / off input / output, Modbus communication network connection interface, acquisition module for 8 temperature probes or low level analogue output module (4-20 ma). Sepam Sepam 100 Sepam 100 units round off the Sepam range and can be installed either separately or combined with either Sepam or Sepam Sepam 100 has several variants: Sepam 100 LD, high impedance differential protection Sepam 100 MI, local breaking device control and signalling modules (many different line diagram types are available). Sepam 100 LD Sepam 100 MI 27

29 Protection, monitoring and control Sepam offer panorama The Sepam offer panorama shows the major functional differences between Sepam and Sepam 2000 for more information, please refer to the «Sepam range» catalogue ref. AC 0401 containing: comprehensive selection guides enabling you to choose the Sepam unit suited to your exact requirements Sepam characteristics Functions Measurements Currents Voltages and frequencies Powers and energies Applications I1/I2/I3/I0 IM1/IM2/IM3 Itrip 1/2/3/0 U21/U32/U13 V1,V2,V3 V0 Vd f P/Q, PM/QM, cosjj ϕ Ea/Er Temperatures Protection ANSI Codes Phase 50/51 Earth 50N/51N Imbalance 46 Directional 67/67N Differential 87T/87M/87B Restricted earthing differential 64REF Overload 49/49T/38 Motor 37/48/51LR/66 Voltage 59/27 59N Frequency 81H/81L Uncoupling (df/dt) 81R Specific Network diagnosis Disturbance recording Switchgear diagnosis Operation time Trip currents, sum of breaking currents Trip circuit monitoring Watchdog Communication Protocol Interface Monitoring and control Inputs / outputs Breaking device control Logical selectivity Customizing available functions basic Maximum Parameter setting Programming 28

30 Protection, monitoring and control Sepam offer panorama Sepam 2000 Sepam Sub station Busbar Transformer Motor Generator Capacitor Sub station Transformer Motor Busbar 67N 87T 87M 87M 49 27/59 32P 79 27R 25 27D 50N/51N: (neutral point) 50/51: (tank earth) 27R 32P and 32Q/40 27D/47 32P, 32Q/ V/51V Cap. bank imbalance 2 recordings of 86 periods 2 recordings of 86 periods 79 27D/47 27R 1 output / 4 contacts: 2 x (1NC + 1NO) 1 output / 2 contacts: 1NC + 1NO Modbus RS485 2 or 4 wire Modbus RS485 remote power supply, 2 or 4 wire 10I/6O in/out 4O in/out 26I/14O in/out 10I/8O in/out 1 analogue output 29

31 Protection, monitoring and control Instrument transformers E28676 ARJP1-2 or 3 Conventional current transformers Conventional current transformers are used to provide power to metering, measuring or control devices. They measure the value of primary current from 10 A to 3150 A. has drawn up a list of current transformers which are appropriate for use with digital protection devices in order to make it easier to determine accuracy characteristics. This list is available in the selection guide on page 58. characteristics. This list is available in the selection guide on page 64. For contactor cubicle AD1 Transformer ARJP1/N2J single primary current, double secondary current for measurement or protection frequency Hz I1n (A) Ith (ka) t (s) Measuring* cl VA protection* 5P VA For cubicle AD1-CL1-GL1-AD2-CL2-GL2-AD4-GL4 Transformer ARJP2/N2J double primary current, double secondary current for measurement or protection frequency Hz I1n (A) Ith (ka) t (s) Measuring* cl VA 10-20VA VA 10-20VA 20VA 20VA protection* 5P VA 2.5-5VA 2.5-5VA 2.5-5VA 5-10VA 5-10VA 7.5VA 7.5VA For cubicle AD1-CL1-GL1-AD2-CL2-GL2-AD4-GL4 Transformer ARJP3/N2J single primary current, double secondary current for measurement or protection frequency Hz I1n (A) Ith (ka) t (s) 1 1 Measuring* cl VA 30 VA protection* 5P20 10 VA 10 VA E74400 E74399 ARJA1 ARO1 For cubicle AD3-CL3-GL3-AD4-GL4 Transformer ARJA1/N2J single primary current, double secondary current for measurement or protection frequency Hz I1n (A) Ith (ka) t (s) Measuring protection cl VA 30 VA 30 VA 5P20 15 VA 15 VA 15 VA For cubicle AD3-CL3-GL3 Transformer ARO1a/N3 single primary current, triple secondary current for measurement or protection frequency Hz I1n (A) 3150 Ith (ka) 50 t (s) 1 Measuring* cl.0,5 30 VA protection* 5P20 7,5 VA * the secondary current for measuring and protection can be of 1A or 5A. 30

32 Protection, monitoring and control Instrument transformers Core balance CTS type transformer E72965 For cubicle AD1-AD2-AD4 with one single-pole cable Transformer ARC2 single primary current, single secondary current for protection frequency Hz I1n (A) Ith (ka) t (s) Protection 5P VA 2.5 VA 5 VA 5 VA 5 VA 5 VA 5 VA 7.5 VA single primary current, double secondary current for measurement or protection frequency Hz I1n (A) Ith (ka) t (s) 1 Measuring protection 5 VA cl.1 10 VA cl VA cl VA cl VA cl.0.5 5P VA 5 VA 5 VA 5 VA 5 VA For cubicle AD1-AD2-AD4 with two single-pole cables Transformer ARC3 single primary current, double secondary current for measurement or protection frequency Hz I1n (A) Ith (ka) t (s) 1 Measuring protection cl VA 30 VA 30 VA 5P VA 10 VA 10 VA E34400 CSP sensor CSP-type broad-range current transformer CSP type current sensors, designed for the Sepam 2000, work on the Rogowski coil principle. CSP sensors use a winding around an insulating core with no magnetic circuit, which prevents saturated and residual flux. Therefore, they are completely linear, and deliver an accurate secondary signal, a perfect image of the primary current, without distortion for both steady and transient states in the primary circuits. These sensors have much wider primary current ranges than current transformers do. The combining of CSP sensors and Sepam 2000 gives a consistent protection and measurement system. This in turn makes current sensor specification simpler (choosing from 3 sensors for a rated insulation level of 24 kv). Sensors Rated current CSP to 300 A CSP to 640 A CSP to 1600 A CSP to 2500 A For Sepam 2000, the primary current is chosen to be lower than the indicated range Cubicle type I rated Isc (ka) 1 sec Type AD1 - AD2 - AD CSP 3110 AD1 - AD2 - AD4 CL1 - CL3 - CL4 AD3 - AD4 CL3 - CL CSP 3310 CSP CSP 3410 CSP cannot be used with differential protection devices. They should be preferred in all other cases in which measurement and protection uses Sepam. AD4 and CL4 limited to 31.5 ka. 31

33 Protection, monitoring and control Instrument transformers E28679 E74401 VRQ3 VRQ1 Voltage transformers These supply power to: measuring, metering and monitoring devices relays or protective devices auxiliary LV sources for various types of switchgear; all these devices are protected and insulated from the MV section. They are installed at the bottom of the functional unit. In the withdrawable fuse version, the voltage transformers are attached to a side wall. The energized part is entirely encapsulated in an epoxy resin, which provides both electrical insulation and excellent mechanical strength. They include the following models: with one insulated MV terminal, for connection between neutral and phase conductors in three-phase systems with withdrawable MV fuses with two insulated MV terminals, for connection between phase conductors. For cubicles AD1-CL1-GL1-TT1-AD2-CL2-GL2-AD3-CL3-GL3 Transformer VRQ3n/S2 phase-earth frequency Hz Primary voltage (kv) 1 st second. voltage (V) 2 nd second. voltage (V) 1 st secondary accuracy class (VA) 2 nd secondary accuracy class (VA) 3/3 3,3/3 5.5/3 6/3 6.6/3 10/3 11/3 13.8/3 15/3 100/3 110/3 110/3 100/3 110/3 100/3 110/3 110/3 100/3 100/3 110/3 110/3 100/3 110/3 100/3 110/3 110/3 100/ VA cl VA cl.0.5 For cubicle AD4-CL4-TT4 Transformer VRQ1N/S2 phase-earth frequency Hz Primary voltage (kv) 20/3 22/3 1st second. voltage (V) 100/3 110/3 2nd second. voltage (V) 100/3 110/3 1st secondary accuracy class (VA) 2nd secondary accuracy class (VA) 50 VA cl.0,5 100 VA cl.1 50 VA cl.3p E28680 For cubicle AD2-CL2-GL2-TT2-AD3-CL3-GL3 Transformer VRC1/S1F phase-phase frequency Hz Primary voltage (kv) Secondary voltage(v) Accuracy class (VA) 75 VA cl.0.5 VRC1/S1F 32

34 Protection, monitoring and control Instrument transformers E28676 For cubicle AD1 contactor This transformer provides power to the coil in order to keep the magnetic circuit of the Rollarc contactor closed. Transformer VRCR.S1 phase-earth frequency Hz Primary voltage (kv) VRCR Secpondary voltage (V) Accuracy class (VA) 50 VA cl.0.5 E28678 CSH core balance CT CSH 120 and CSH 200 core balance CT's, provide more sensitive protection by direct measurement of earth fault currents. Specifically designed for the Sepam range, they can be directly connected to the Sepam "residual current" input. They are only different in terms of their diameter: CSH mm internal diameter CSH mm internal diameter core balance CT CSH core balance CT 33

35 Withdrawable parts E74427 Switchgear 34

36 Switchgear Withdrawable parts These include: the circuit breaker or contactor with their opening and closing mechanism, the disconnecter truck or the earthing truck the lever-type propulsion mechanism for racking in-pout interlocks to fix the withdrawable parts onto the fixed part MCSet circuit breakers LF1-2-3, SF1-2, switches and R400-R400D contactors use sulphur hexafluoride (SF6) for insulation and breaking. The live parts are housed in an insulating enclosure in the sealed pressure system in compliance with IEC The devices used to equip the MCset range of functional units have outstanding features: long service life maintenance-free live parts high electrical endurance very low overvoltages operating safety insensitivity to the environment breaking capacity and dielectric strength maintained at atmospheric pressure low filling pressure. Withdrawable parts Circuit breaker EE74418 A circuit breaker is a safety device enabling switching and protection of electrical distribution networks. Installed in the MCset cubicle, it protects all components situated downstream during a short circuit. Earthing truck E72893 The earthing truck is a safety feature which allows the cubicle busbar to be earthed. It is installed instead of the circuit breaker and has the same interlock possibilities. Disconnector truck E72894 The disconnector truck enables the upper and lower part of the cubicle to be shortcircuited. It is installed instead of the circuit breaker and has the same interlock possibilities. 35

37 Switchgear Withdrawable parts LF Circuit breaker E72887 Presentation LF1-2-3 circuit breakers equip cubicles AD1-2-3 and CL1-2-3 for voltage values of between 7.2 and 17.5 kv. Breaking is based on the principle of self-expansion in SF6. The 3 main poles are contained in an insulating enclosure of the sealed system type, which requires no filling during the service life of the device. (In conformity with standard IEC appendix EE) This gas-tight enclosure is filled with SF6 at a low relative pressure of 0.15 Mpa (1.5 bars). Low pressure filling ensures reliable gas tightness. An optional pressure switch triggers an alarm in the event of a pressure drop. LF1-2-3 circuit breakers are actuated by RI type stored energy release mechanisms. E E Principle of the self-expansion breaking technique This technique is the result of a large amount of experience in SF6 technology and significant research effort. It combines the rotating arc technique with thermal expansion to create the conditions to cool and extinguish the arc. This enables the control mechanism energy to be reduced as well as arc contact erosion; mechanical and electrical endurance is therefore increased. E Fig. 1 Fig. 2 E The operating sequence in a self-expansion breaking chamber whose moving part is actuated by the mechanical control is as follows: Fig. 1: the circuit breaker is closed Fig. 2: on opening of the main contacts (a), the current is transferred to the breaking circuit (b) Fig. 3: on separation of the arcing contacts, an electrical arc appears in the expansion chamber (c); the arc rotates under the effect of the magnetic field created by the coil (d) which has the breaking current running through it; the overpressure produced by the increase in gas temperature in the gas expansion chamber (c) causes gas flow which blows the arc within the tubular arcing contact (e), thus causing it to extinguish when the current passes to zero. Fig. 4: circuit breaker open. Fig. 3 Fig. 4 36

38 Switchgear Withdrawable parts LF circuit breaker (cont.) Characteristics of LF circuit breakers in MCset cubicles IEC LF1/MCset1 LF2/MCset2 LF3/MCset3 Rated voltage kv, 50/60 Hz 7,2 12 7, ,5 7, ,5 Insulation level kv, rms 50 Hz - 1 mn kv, impulse 1,2/50 µs Rated nominal current A 630 (la) Breaking capacity Isc ka, rms 31,5 31, , ,5 Making capacity ka, peak Short time withstand current ka, rms.3s 31,5 31, , ,5 ka, rms.1s ,5 Capacitor breaking A capacity (1) Rated operating sequence Approximate operating time for supply of releases at Un Mechanical endurance (1) for other values please consult us. O-3min-FO-3min-FO O-0,3s-FO-3min-FO O-0,3s-FO-15s-FO ms opening breaking closing Number of switching operations 37

39 Switchgear Withdrawable parts LF circuit breaker (cont.) RI operating mechanism LF range circuit breakers are actuated by an RI operating mechanism, that ensures a switching device closing and opening rate that is independent of the operator. This operating mechanism, which is always motorised, can perform remote control functions and enables fast reclosing cycles. The RI operating mechanism includes: a spring system that stores the energy needed to close and open the breaker a manual spring charging system an electrical motor-operated spring charging device that automatically recharges the mechanism as soon as the contacts close (recharging time <15s) two mechanical push buttons for opening and closing, accessible with the cubicle door open (circuit breaker in test position) For control with the door closed (circuit breaker racked in): circuit breaker opening by controlling the propulsion device circuit breaker closing optional an electrical closing system comprising a closing release for remote control and an anti-pumping relay an electrical opening system comprising one or more opening releases of the following type: single or double shunt undervoltage an operation counter an "operating mechanism charged" indication contact (M3) an spring charging limit switch contact (M1-M2) a black-white mechanical "open-closed" position indicator a multi-pin connector to isolate auxiliary circuits in the "racked out" position Auxiliary contacts The RI operating mechanism is equipped with a block of 14 auxiliary contacts including: 1 changeover contact for the electrical operating mechanism 1 changeover contact for indication 1 contact for the shunt release The number of available contacts depends on the position of the available operating mechanism and the options chosen (see table opposite) Contact characteristics Rated current 10 A Breaking capacity CA 10 A at 220 V DC 1.5 A at 110 or 220 V (L/R y 0.01s) 38

40 Switchgear Withdrawable parts LF circuit breakers (cont.) Type of auxiliary Spring charging motor RI operating mechanism I Closing Opening release release Shunt Single Double Under voltage Available contact NC NO Ch Supply voltage AC (V) 50 Hz Hz DC (V) Consumption AC (VA) /100 (1) DC (W) /10 (1) possible combinations of auxiliairies and quantities or or or or or or or (1) pick-up/latched consumption. Auxiliaries diagram J KN M M1-M2 M3 QF SE Sm1 Sm2 Sm3 Sn SP SQ YF Y01-Y02 YM Circuit breaker Anti-pumping relay Spring charging motor End of charging contacts Operating mechanism charged indication Circuit breaker auxiliary circuits Latched tripping contact Closing push button (external) Opening push button for shunt trip release (external) Opening push button for undervoltage release (external) Closing disabling contact (external) Pressure switch contact Device ready to operate contact Closing release Shunt opening release Undervoltage opening release E20003 RI circuit breaker operating mechanism Sm1 Sm2 Sm3 Sn M Q J M1 M2 KN Y02 S Y01 M3 SP Y YM SQ 39

41 Switchgear Withdrawable parts SF circuit breakers E72888 Presentation SF range circuit breakers equip cubicles AD4 and CL4 for rated voltage values of 24kV. They work on the basis of the "puffer" type principle in SF6, which is used as a breaking and insulating medium. Each of the 3 poles have an independent insulating enclosure which forms a filled pressure system in compliance with IEC standard appendix EE. Each pole forms a gas-tight unit filled with low pressure SF6 at low relative pressure of 0.05 to 0.35 MPa (0.5 to 3.5 bars) according to the performance level required. No filling is required during the equipment's life. According to the performance levels, it is possible to optionally equip SF6 circuit breakers with a pressure switch to act on an alarm in the case of a pressure drop. SF6 range circuit breakers are actuated by a GMH type spring mechanism. B Fig. 1 Fig. 2 Principle of the puffer breaking technique. The main contacts and arcing contacts are initially closed (Fig. 1) Pre-compression (Fig. 2) When the contacts begin to open, the piston slightly compresses the SF6 gas in the pressure chamber. Arcing period (Fig. 3) The arc appears between the arcing contacts. The piston continues its downward movement. A small quantity of gas, directed by the insulating nozzle is injected across the arc. For the breaking of low currents, the arc is cooled by forced convection. However, for high currents, thermal expansion causes the hot gases to move towards the cooler parts of the pole unit. The distance between the two arcing contacts becomes sufficient for the current to be broken when it reaches the zero point, due to the dielectric properties of the SF6. Sweeping overstroke (Fig. 4) The moving parts finish their movement and the injection of cold gas continues until the contacts are completely open. Fig. 3 Fig.4 40

42 Switchgear Withdrawable parts SF circuit breakers (cont.) Characteristics of SF circuit breakers in MCset cubicles Electrical characteristics SF1/MCset4 SF2/MCset4 Rated voltage kv, 50/60 Hz Insulation level kv, rms 50 Hz - 1 mn kv, impulse 1,2/50 µs Rated nominal current (Ia) A Breaking capacity Isc ka, rms ,5 Making capacity ka, peak Short time withstand current ka, rms.3s ,5 Capacitor breaking capacity Rated operating sequence Approximate operating time for supply of releases at Un A O-3min-FO-3min-FO O-0,3s-FO-3min-FO O-0,3s-FO-15s-FO ms opening breaking closing Mechanical endurance Nb of switching operations

43 Switchgear Withdrawable parts SF circuit breakers (cont.) GMH operating mechanism SF range circuit breakers are actuated by a GMH operating mechanism that ensures a switching device closing and opening rate that is independent of the operator. This operating mechanism, always motorised, enables remote operation and fast reclosing cycles. The GMH operating mechanism includes: a spring system that stores the energy needed to close and open the breaker a manual spring charging system an electrical motor spring charging device that automatically recharges the mechanism as soon as the contacts close (recharging time <15s) two mechanical push buttons for opening and closing, accessible with the cubicle door open (circuit breaker in test position) an electrical closing system comprising a closing release for remote control and an anti-pumping relay an electrical opening system comprising one or more opening releases of the following type: shunt undervoltage an operation counter an optional "operating mechanism charged" indication contact an end of charging contact a black-white mechanical "open-closed" position indicator a multi-pin connector to isolate auxiliary circuits in the "racked out" position. Auxiliary contacts The GMH operating mechanism is equipped with a block of 14 auxiliary contacts including: 1 changeover contact for the electrical operating mechanism 1 changeover contact for indication 1 contact for the shunt release Contact characteristics Rated current 10 A Breaking capacity CA 10 A at 220 V DC 1.5 A at 110 or 220 V 42

44 Switchgear Withdrawable parts SF circuit breakers (cont.) Type of auxiliaires Spring charging motor GMH operating mechanism characteristics Closing Opening release Available contact release Shunt Under NC NO Ch single double voltage Supply voltage AC (V) 50 Hz Hz DC (V) Consumption AC (VA) /100 (1) DC (W) /10 (1) Possible combinations of auxiliaries and quantities or or or or or or or (1) pick-up/latched consumption Auxiliary diagram J M YF M1-M2 QF KN SE Y01-Y02 YM M3 SP SQ SM1 SM2 Sm3 Sn Circuit breaker Spring charging motor Closing release End of charging contact Auxiliary circuit breaker contacts Anti-pumping relay Latched release contact Shunt opening releases Undervoltage opening release Operating mechanism charged contact Pressure switch contact Device ready to operate contact Closing push button (external) Opening push button for shunt releases (external) Opening push button for undervoltage releases (external) Closing disabling contact (external) E34401 GMH circuit breaker operating mechanism Sm1 Sm2 Sn M Q M1 M2 KN SE Y01 Sm3 S SQ M3 Y Y Y02 43

45 Switchgear Withdrawable parts Rollarc contactor E72889 Description three main poles located in the pressurised enclosure electromagnetic operating mechanism with: magnetic latching for Rollarc 400 mechanical latching for Rollarc 400D upstream and downstream terminals for power circuit connections pressure switch equipped with a NO contact for continuous monitoring of SF6 (option) mechanical interlocking of the contactor in the open position to prevent racking in or out with the contacts closed 3 HPC fuses with striker pin and auxiliary contact to trip the contactor E18029 An optimum solution The Rollarc contactor uses rotating arc breaking in SF6 gas. A magnetic field causes the arc to rotate between the arcing contacts, The field is created by the passage of the arc through a blow-out coil (Fig. 1). The rotation movement cools the arc by forced convention. The arc rotation rate depends on the current to be broken. The energy required to extinguish the arc is supplied by the electrical system. The operating mechanism is simple and economical. Modulation of the rotation rate ensures soft breaking without any dangerous overvoltage or current chopping. The Rollarc has a high breaking capacity and may be used without a time delay in combination with fuses. Fig. 1 E22594 Fig. 2 Fig. 3 Contactor operation At the beginning of the opening operation, the main contacts and arcing contacts are closed (Fig. 2). The main circuit is interrupted by the separation of the main contacts (Fig. 3). The arcing contacts are still closed. The arcing contacts separate shortly after the main contacts. The arc that is created is subjected to the electromagnetic field produced by the coil, which is proportional to the current to be interrupted. The arc rotates rapidly, driven by the electromagnetic force and is cooled by forced convection (arcing period, Fig. 4) Due to the phase-shift between the current and the magnetic field, this force is still significant around the current zero point. At the zero point, the gap between the two arcing rings recovers its original dielectric strength due to the intrinsic properties of SF6 (contactor open, Fig. 5). Fig. 4 Fig. 5 44

46 Switchgear Withdrawable parts Rollarc contactor (cont.) Rated voltage Dielectric strengh Max. operating current Electrical characteristics of the Rollarc R400/R400D (1) in MCset cubicles Rated contactor current Endurance électrique Fuse breaking capacity Short time withstand current (3) 50 Hz 1 mm Impulse 1,2/ 50µs (kv) (kv rms) (kv peak) (A) (A) (ka rms) (ka rms.) (ka peak) 7, (1) Rollarc 400: without mechanical latching. Rollarc 400D: with mechanical latching. (2) For operating voltages of 3 to 12 kv. (3) Limited by fuses. E E E72898 Fig. 1 Fig. 2 Maximum switchable power Calculation assumptions (motor) Ratio between starting current Id and maximum current In: power factor x efficiency 0.88 x 0.9 = for 300 P < 600 kw 0.9 x 0.92 = for 600 P < 1100 kw 0.92 x 0.94 = for 1100 P < 5000 kw. Starting time < 10s Starts per hour y 3 according to IEC Operating voltage (kv) Direct starting motor (kw) with 315 A fuses Operating schemes Transformer with 315 A fuses 3, , , , (fus. 200 A) Capacitor (kvar) with 315 A fuses Temporary service or periodic service The two curve systems (Fig. 1 and 2) can be used to determine the maximum current surges accepted by the Rollarc 400 contactor, in temporary or periodic service. temporary service: knowing the steady state current Ip, we determine the maximum duration Ts of a current surge Is from graph 1 (Fig. 2). periodic service: knowing 3 of the following 4 parameters: overcurrent Is overcurrent time Ts cooling current Ir cooling time Tr We determine the 4 th parameter using graph 2 (fig. 1 and 2). Operating time opening time 20 to 35 ms arcing time: < 20 ms closing time: 80 to 120 ms. 45

47 Switchgear Withdrawable parts Rollarc contactor (cont.) E32130 E32151 E32131 Fig. 1 Fig. 2 Fuses The fuses used are of the FUSARC CF or FERRAZ type (Standard IEC and DIN 43625) with high breaking capacity. Substantial fault current limitation reduces the electrodynamic stresses on the loadside components (contactor, cables, CT, etc). A "blown fuse" device is used to open the three poles of the contactor.. Rated voltage (kv) 7,2 12 Max. fuse rating (A) * Breaking capacity (ka) * please consult us Trip curves The trip curves for FUSARC CF (Fig. 1) and FERRAZ (Fig. 2) fuses are shown opposite. These are the average curves with an rms current value tolerance ± 10%. Limitation curves FUSARC CF (Fig. 3) and FERRAZ (Fig. 4) fuses have current limiting capacity. These curves give the maximum value of the limited breaking current Ic (in ka peak), as a function of the value Ip (in ka rms) of the presumed current that would be created if there were no protection. For further details ask for the fuse catalogues. Operating mechanism Supply voltage DC: 48, 110, 127 and 220V AC: 50, 100, 110, 127 and 220V Acceptable variations: +10% -15% Rollarc 400 contactor The contactor is closed by the pick-up coils. The latching coils are inserted in the circuit at the end of the stroke of the contactor. Consumption Pick-up Latched DC 1200 W 30 W AC 1200 VA 30 VA E32152 Fig. 3 Rollarc 400D contactor The contacts are mechanically latched in the closed position. They are opened by a shunt trip release which releases the latching. Consumption Pick-up coil Shunt trip DC 1200 W 100 W AC 1200 VA 200 VA (1) optional supply possible by auxiliary transformer (see page 35) (2) supply time <0.12s Auxiliary contacts Auxiliary contacts are of the common point changeover type. The following are available: 9 contacts for the Rollarc 4 8 contacts for the Rollarc 4D Contact characteristics:. Rated current: 10A Breaking capacity: DC (L/R y 0,01 s) : 2 A at 110 V AC (cos.ϕ u 0,3) : 10 A at 220 V Fig. 4 46

48 Switchgear Withdrawable parts Rollarc contactor (cont.) FU1 FUBT K1 P61 S61 SQ1 X20 X51 X61 XAP XE XU YD YF YM S4 MV fuses LV fuse R400 AC MV contactor Operation counter Locking contact activated by the pretrip push button and during racking in / out operations Contactor limit switch LV connecter, 42 pins + earth Control plate Contactor terminal block Instantaneous auxiliary relay Instantaneous auxiliary control relay 0.6s time delay auxiliary relay Shunt trip coil Closing coils Latching coil Trip button E32149 Auxiliaries diagram Operating mechanism for Rollarc 400 contactors Operating mechanism for Rollarc 400D contactors E

49 Switchgear DI switch cubicle E74222 Switch The three rotating contacts are placed in an enclosure filled with gas to a relative pressure of 0.04 MPa (0.4 bars) The system offers maximum operating reliability: gas tightness The SF6 filled enclosure is of the "sealed pressure system type". Sealing tightness is always checked in the factory. safety the switch may be in one of three positions: "closed", "open" or "earthed", giving a natural interlocking system that prevents operator error. Moving contact rotation is driven by a fast acting mechanism that is independent of the operator. the device combines the breaking and disconnecting functions the SF6-enclosed earthing switch has a short circuit making capacity in compliance with standards breaking principle The outstanding qualities of SF6 gas are used to extinguish the electrical arc. To increase cooling of the arc, a relative movement is created between the arc and the gas. The arc strikes when the fixed and moving contacts separate. The combination of the current and a magnetic field created by a permanent magnet causes the arc to rotate around the fixed contact, extending and cooling it until it is extinguished at current zero point. The distance between the fixed and moving contacts is then sufficient to withstand the recovery voltage. This system is both simple and dependable, and it provides improved electrical endurance due to very low wear of contacts. E enclosure 2 cover 3 operating shaft 4 fixed contact 5 moving contact 6 seal E15318 Contacts closed Contacts open Contacts earthed 48

50 Switchgear DI switch cubicle (cont.) Operating mechanism and auxiliaries CI2 double function operating mechanism Switch function: independent closing in two steps: - operating mechanism recharged by a hand lever or motor - stored energy released by a push button or trip unit independent opening by push button (O) or trip unit earthing switch function independent closing by a hand lever Operating energy is provided by the compression of a spring which causes the contacts to close or open after the neutral point is passed. auxiliary contacts switch (2 O + 2 C) switch (2 O + 3 C) and earthing switch (1 O + 1 C), switch (1C) and earthing switch (1 O + 1 C) if motor option motor option opening release shunt undervoltage (option) closing release: shunt trip fuse blown release: any fuse blown trips the opening of the switch. Motor option and releases Un DC AC Supply (V) (50 Hz) (1) Motor option (W) 200 (VA) 200 (s) < 7 < 7 Opening releases Shunt (W) (VA) Undervoltage Pickup (W) 160 (VA) Latched (W) 4 (VA) Closing releases Shunt (W) (VA) (1) please consult us for other frequencies. 49

51 Switchgear DI switch cubicle (cont.) E74428 The fuse rating to install in DI2 and DI4 protection cubicles depends amongst other things on the following information: operating voltage transformer power fuse technology (manufacturer). Various types of fuses with medium energy strikers can be installed: according to standard UTE NCF : Soléfuse type according to IEC recommendation and dimensions DIN : Fusarc CF type. E.g.: General case for protection of a 400 kva-10 kv transformer, we will choose Soléfuse fuses, rated at 43 A or Fusarc CF fuses rated at 50 A. E74429 Transformer protection By fuse-switches Rated voltage (kv) Rating (A) L (mm) Ø (mm) Soléfuse (UTE standards) to to 63 Fusarc CF (DIN standards) to to to to to to Others (DIN standards) Weight (kg) Soléfuse Operating voltage (kv) Fusarc CF Fuse selection table Rating in A - no overload at - 5 C < t < 40 C. Please consult us for overloads or for operation above 40 C. Transformer power (kva) Soléfuse (standards UTE NFC , ) Soléfuse (general case, standard UTE NFC ) Fusarc CF (DIN standard) Rated voltage (kv) 50

52 Switchgear Withdrawable part extraction E72890 Extraction table Adaptable to 3 cubicle widths, this extraction table enables: - the withdrawable part to be removed from the cubicle - the withdrawable part to be fitted into the cubicle. E72891 Extraction and lowering tool (option) Adaptable to 3 cubicle widths, this extraction tool enables: - the withdrawable part to be removed from the cubicle - the withdrawable part to be introduced into the cubicle - the withdrawable part to be lowered to the ground - the withdrawable part to be lifted from the ground Racking handle This handle enables: - the withdrawable part to be racked in / out - the earthing switch to be open / closed. 51

53 Installation Implementation examples MCset layout (7.2 to 17.5 kv) Line up switchboard (2 supply cubicles and 1 bussection at 12 kv ka E74430 Civil engineering with utilities space (MCset 7.2 to 17.5 kv) E minimum dimensions to be complied with when installing the MCset switchboard 2 minimum dimensions to be defined according to the cable bending radius 3 operating distance 4 distance needed to extract a functional unit from the switchboard without moving the other units 5 provide an exhaust tunnel above the switchboard when the room height is less than 4 metres (see page 14) A anchor point B adjustment point Nota : for further information, refer to the civil engineering, user and instruction manual. 52

54 Installation Implementation examples MCset 4 layout (24 kv) Line up switchboard (2 supplies and 1 bussection at 24 kv E74432 Civil engineering with utility space (MCset 24 kv) E minimum distance to comply with 2 minimum distance to be defined according to the cable bending radius 3 operating distance 4 distance needed to extract a functional unit from the switchboard without moving the other units 5 provide an exhaust tunnel above the switchboard when the room height is less than 4 metres (see page 14) A anchor point B adjustment point Nota : for further information, refer to the civil engineering, user and instruction manuals. 53

55 Installation Connections E72901 Switchgear resistance to ageing in a sub-station depends on 3 key factors the need for correctly made connections New cold connecting technologies offer easy installation and favour durability in time. Their design means they can be used in polluted environments with harsh atmospheres. the impact of relative humidity The installing of a heating element is essential in climates with high relative humidities and significant temperature differentials. ventilation control The dimensions of air vents must be appropriate for the dissipated energy in the sub-station. They must only sweep across the transformer environment. Cold connected terminals Schneider s experience has led it to favour this technology wherever possible for optimum durability. The maximum acceptable cable cross-section for standard assemblies are: 630 mm 2 for incomer or feeder cubicles with single-pole cables 400 mm 2 for incomer or feeder cubicles with three-pole cables 95 mm 2 for transformer protection cubicles with fuses. Access to the compartment is only possible when the earthing switch is closed. Tightening torques for cables will be attained using a dynamo wrench set to 50 mn Dry, single pole cable Short end piece, cold connectable Performance 3 to 24 kv A A Cross section mm 2 50 to 630 mm 2 Supplier All suppliers of cold connectable terminals: Silec, 3M, Pirelli, Raychem... Number of cables 1 to 8 per phase Comments For greater cross section and number of cables, please consult us Dry, three-pole cable Short end piece, cold connectable Performance 3 to 24 kv A A Cross section mm 2 50 to 400 mm 2 Supplier All suppliers of cold connectable terminals: Silec, 3M, Pirelli, Raychem... Number of cables 1 to 4 per phase Comments For greater cross-section, number of cables, please consult us Connection possibilities using dry cables Number AD1 AD1 AD2 AD3 AD3 AD4 RD4 (2) DI2 DI4 of câbles cont. 2500A 3150A 1 s gle per phase (1) (1) (1) (1) 2 s gle per phase (1) (1) (1) (1) 3 s gle per phase 4 s gle per phase 6 s gle per phase 8 s gle per phase 1 thr. per cubicle 2 thr. per cubicle 3 thr. per cubicle 4 thr. per cubicle (1) Possibility of installing LV core balance type transformers. (2) Specific cubicle: direct incomer. 54

56 Installation Connection E72895 figure 1 Cable connection height Type of cubicle Configuration H (mm) AD1 - AD2 630A LV core balance CT 650 (2) 1 set of 3 CT s sets of 3 CT s A LV core balance CT 650 (2) 1 set of 3 CT s sets of 3 CT s 465 AD3 2500A 1 set of 3 CT s sets of 3 CT s A 1 set of 3 CT s 410 AD4 - RD4 630A LV core balance CT to 2500A 1 set of 3 CT's sets of 3 CT's 410 DI2 450 DI4 650 (1) an additional compartment under the cubicle is compulsory for AD3 3150A equipped with two sets of CT s (cf. figure 2). (2) when installing with a LV core balance CT, use a LV core balance CT of type ARC3 when connecting with 2 cables (see page 33). E72896 the cubicles and cables requiring the maximum depth should be taken into consideration when determining the depth P of a switchboard cable duct (cf. figure 1). when using cables of length greater than 460 mm for MCset1-2-3 or 430mm for MCset4, install an additional compartment as marked (A) under the cubicle (cf. figure 2). figure 2 55

57 Cubicle equipment Equipment Key: b: standard v: option (1) basic equipment with earthing switch option (2) according to the room in which the MCset switchboard is installed, you can choose option 3 or 4 sides, and possibly an exhaust tunnel for hot gases (see page 14) (3) limited to In: 2500 A (4) impossible for AD A (5) connection 1 or 2 cables per phase (6) possibility of 1 phase-phase VT (7) only for 630 A cubicle (8) 1 NO / 1 NC available (9) vacuum breaking circuit breakers: please consult us (10) compartment protection Switchgear Circuit breaker (9) Contactor Pressure switch Fuse switch Disconnector truck Earthing truck Fixed busbars Racking position indication contact for the withdrawable part 3 NO / 3 NF 6 NO / 6 NF Padlocking of isolating shutters for withdrawable parts Locking of withdrawable part / cable compartment Disabling of circuit breaker operating mechanism Voltage present indicator Locking of mechanical racking of the withdrawable part Locking of with keylock or electromagnetic the racking of the withdrawable part Earthing switch (SMALT) Earthing switch Earthing switch position indication contacts 3 NO / 3 NF Earthing switch position key locking (1) Electromagnetic earthing switch position locking Transformers Voltage transformers (1 per phase) Fuse melting indication contact Without fuse With plug-in fuses Phase-phase Phase-earth Phase-phase Phase-earth 1 NO Current transformer Single set 3 TC Double set 6 TC LV core balance CT (5) Connections Connection with cable terminal height > 460 mm (MCset 1-2-3) or 430 mm (MCset 4) Connection from top bar Connection by cable from the bottom Cubicle Protection index Enveloppe IP3X IP4X IPX1 Compartiments (10) IP2XC Anti-arcing protection (2) 25 ka - 1 s 40 ka - 0,15 s Lightning arrester Busbars 1250 A / 2500 A / 3150 A Exposed Insulated LV compartment key locking LV compartment lighting (220 V DC) Anti-condensation heating element (220 V DC) 56

58 Type of cubicle AD1 AD1 cont. AD2 AD3 AD4 RD4 CL1 CL2 CL3 CL4 GL1 GL2 GL3 GL4 TT1 TT2 TT4 DI2 DI4 (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (8) (8) (1) (1) (1) (1) (1) (1) (1) (1) (1) (6) (6) (6) (6) (4) (7) (7) (3) 57

59 Current transformers (Selection guide) Type of cubicle Accuracy class ratio AD1 AD1 fuse contactor Preferred current transformers: 7.2 to 24 kv secondary 1 A or 5 A AD2 AD2 AD3 CL3 CL1 CL2 AD4 CL4 Isc ka 1 sec NA (1) ratio number 1 Accuracy class and ratio 40-80/1 or VA - 5P / VA - 5P /1 or VA - 5P /1-1 or VA - 5P /1-1 or VA - 5P VA - cl /1-1 or VA - 5P VA - cl /1-1 or VA - 5P VA - cl /1-1 or VA - 5P20 20 VA - cl /1-1 or VA - 5P20 20 VA - cl /1-1 or VA - 5P20 30 VA - cl /1-1 or VA - 5P20 30 VA - cl /1-1 or VA - 5P20 30 VA - cl /1-1 or VA - 5P20 30 VA - cl /1-1 or VA - 5P20 30 VA - cl /1-1 or VA - 5P20 30 VA - cl /1-1 or VA - 5P20 15 VA - cl / VA - 5P20 15 VA - cl /1-1 or VA - 5P20 15 VA - cl /1-1 or VA - 5P20 15 VA - cl /1-1 or VA - 5P20 15 VA - cl /1-1 or 5/5 2.5 VA - 5P20 15 VA - cl /1-1 or VA - 5P20 15 VA - cl /1-1 or VA - 5P10 15 VA - cl /1-1 or VA - 5P20 15 VA - cl /1-1 or VA - 5P20 15 VA - cl /1-1 or VA - 5P20 15 VA - cl /1-1 or VA - 5P20 15 VA - cl 0.5 (1) Short circuit current withstand is co-ordinated with the current limited through the fuses. Other characteristics are available, including the possibility of having 3 secondary windings. Please consult us detailing the type of protection or measuring required as well as the impedance of the outside loads and the cabling. 58

60 A few references MCset, a product for all your electrical distribution applications Industry oil, Girassol Mpg-Elf, Angola oil, Repsol, Santander, Spain oil, Sincor (Total), Venezuela pharmaceutical, Merck, Singapore automotive, Volvo, Belgium automotive, Ford, Germany cement production, Lafarge, France agri-food, Mastellone, Argentina Infrastructure port of KSA Jeddah, Saudi Arabia Santafe de Bogota airport, Colombia Slim River Hospital, Malaysia water treatment, Degremont, Argentina Energy Sarlux power station, Italy EVN thermal power station, Vietnam Costa Nera SA power station, Argentina electrical distribution, DES (department of electrical services), Brunei renovation of the Chernobyl nuclear power station, Ukraine E74226 E74225 A53-MAPP E74223 E74224 note: Due to the constant progress in standards and equiptment the characteristics shown in the tests and images are only binding once expressly confirmed by ourselves. 59