LKE LAURITZ KNUDSEN ELECTRIC. VECTOR series 12~24 kv VECTOR Metal-clad Switchgear & Vacuum Circuit Breaker

Transcription

1 LKE LAURITZ KNUDSEN ELECTRIC VECTOR series 12~24 kv VECTOR Metal-clad Switchgear & Vacuum Circuit Breaker

2 Contents Introduction...1 Compliance to Standards...2 Main Certi cation with KEMA...2 Additional Certification with ASTA...2 Certi cation with CNACL...2 Normal Operating Conditions...3 Special Operating Conditions...3 Product Documentation...3 Product Designation...4 Additional Ordering Information...4 Technical Parameters...5 Standard Product Features...6 Elements of the Vector Metal-clad Switchgear Unit...7 The Busbar Compartment...8 The PT Compartment...9 The Cable Compartment...9 The VCB Compartment...10 The Instrumentation Compartment...11 The Auxiliary Control System...11 Safety Interlocks and Padlocks...12 The Heat-Management System...13 Internal Arc Fault Management System Standard Design and Variants...17 VCB Chamber Module...18 Main Components...19 VECTOR Vacuum Circuit Breaker...19 Encapsulated Pole Assembly...20 Spring Mechanism with Low Component Count...21 Permanent Magnet Actuator...22 Other Withdrawable Devices...23 Main xed components inside the panel...24 Standard Solutions...25~41 Outline Dimension of Vector...42 Secondary Wiring for Vector Breaker ACCREDITED FM ISO 9001:2008 KEMA certi cation BSI TM Accredited by the Dutch Accreditation Council - RvA

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4 Introduction The Vector range of air-insulated medium voltage metal-clad switchgear and Vector series vacuum circuit breaker (VCB) were developed by LKE to meet global standards of safety and comply with the requirements of the main specifying bodies such as the IEC and the GB. The Vector Metal-clad Switchgear is a 12~24 kv system. It is a modular system which uses the Vector withdrawable VCB and other standardized devices such as current transformers and voltage transformers; each panel is assembled from a number of prefabricated standard modules thereby allowing more flexibility in application and faster delivery times. Vector12-VMS (above-left) and Vector24-VMS (above-right) metal-clad switchgear. The Vector Metal-clad Switchgear was developed as a multi-purpose system suitable for a wide range of applications for power distribution or motor-control functions for clients in the energy-supply sector, the mining sector, rail track, etc. The vector range of products have the perfect protection measures, which are as follows: Site operation or maintainer protection, with anti-error Interlock System prevent human operation error. Mechanical and electrical interlock between panels of the Metal-clad board, prevent power transmission error and malfunction. With perfect relay protection and remote system, which can do proper handling to fault in circuit (ie: overloading, short circuit, overvoltage) and send the running state to remote control center. Internal Fault Protection System: the ARCP arc protection system of the vector is to ensure that the breaker opens very quickly in the event of internal arc occurring in the panel itself, minimize the time of internal arc and reduce the damage for equipment. Other device with Vector range of metalclad panel: Vector range of encapsulated pole assembly breaker, PTR range of PT truck, DTR range of disconnect truck and V-TEST cable test truck, etc. Vector12-S32 Vacuum Circuit Breaker being inserted into the Vector panel. Instrumentation on the Vector panel. 1

5 Compliance to Standards Additional Certification with ASTA: The Vector series of withdrawable vacuum circuit breakers and Vector Metal-clad Switchgear have been type-tested and certi ed to comply fully with the following standards: IEC IEC IEC Main Certification with KEMA: On IEC with the Vector as a threephase withdrawable circuit breaker in a cradle incorporating bus-bar and feeder conductor mouldings for both the switchgear units with rated current levels of 1250A and 2000A. On IEC sub-clauses 6.6 (STC) and (Making) for the three-phase earthing switch used in the Vector switchgear. On IEC with the Vector as a switchgear and controlgear unit incorporating a vacuum circuit-breaker and an earthing switch, for both switchgear units with rated current levels of 1250A and 2000A. On IEC , Part 200, Annex AA:A, pertaining to Internal Fault, for the Vector as a three-phase metal-clad switchgear consisting of three separate chambers (VCB Chamber, busbars chamber, and cables / current transformers / earthing switch chamber), rated 31.5 ka/1s. On IEC : Clause on Lightning Impulse voltage tests with the 12kV Vector switchgear whereby the product was successfully subjected to a 95kV (BIL) test. The Vector complies with the LSC2B classification of IEC which requires the system to be able to keep other compartments energized when opening the main circuit-breaker compartment.the Vector Metalclad Switchgear also complies with IEC on IP Rating. Standard Vector enclosures have an IP 3X rating The Vector Metal-clad Switchgear can be upgraded to an IP 44 Rating on demand. Certification with CNACL Further testing with CNACL verified the above tests and increased short-time withstand current ratings of the system to 31.5kA/4s. Pictures from KEMA type test report. 2

6 Normal Operating Conditions The Vector Metal-clad Switchgear is suitable for normal operating conditions for indoor switchgears and switchboards in accordance with IEC The following operating conditions are applicable: Ambient temperature: Maximum temperature at + 45 C Maximum 24 hour average + 35 C Minimum (according to minus 5 indoor class ) - 5 C The maximum site altitude must not exceed 1000 m. For altitudes of more than 1000m, compensation must be allowed. Relative humidity (at + 25 C) should not exceed Method 2: Having found the altitude factor, divide the rated voltage of the network in question by this value. The result is the new rated voltage, which determintes the choice of the equipment to be installed. Insulation for 3.6kV< Um < 52kV Maximum voltage for apparatus U m (r.m.s) Nominal lightning impulse withstand voltage U rb (peak) Nominal power frequency withstand voltage U rw (r.m.s) kv kv kv Table 1 a daily average of 95%. Relative humidity (at + 25 C) should not exceed a monthly average of 90%. Curve for determining altitude factor k in relation to altitude H (according to DIN VDE 0111 Part 1 Chapter 1) K Special Operating Conditions 1.0 Table 2 The Vector Metal-clad Switchgear is designed 0.8 for operation in the climate of Wda type according to IEC Special operating 0.6 conditions beyond the scope of the above mentioned standards must be discussed with LKE in advance H (m) Altitude correction The insulation considerations of the switch depend on the extent to which the isolating distances are influenced by weather conditions. The dielectric strength of insulation is in uenced by the properties of the surrounding air (air density, moisture content, etc.) With increasing height above sea level the density of the air and hence its dielectric strength diminishes. This fact must be taken into account in considering the application of the switch. Correction procedure Method 1: Knowing the altitude H of the site, nd the corresponding altitude factor k from Table 2.The impulse test voltage or the power-frequency test voltage(table 1) corresponding to the rated voltage of the equipment is then divided by the altitude factor. The test voltages thus obtained are then valid for testing in high-voltage laboratories at altitudes of less than 1000 m above sea level, and determines the design of the insulation. Product Documentation Full and comprehensive documentation is available on the Vector Metal-clad Switchgear and the withdrawable vacuum circuit breaker. These include : Product Catalogue Type-Test Reports and Product Certi cates The Operations and Maintenance Manual for the Vector Metal-clad Switchgear and the withdrawable vacuum circuit breaker. Standard Solutions Database for the Vector Metal- Clad Switchgear The CAD-Database of the switchgear enclosure for OEM panel-builders. 3

7 Product Designation The Vector switchgear panels are designated in the following manner to differentiate them from the Vector circuit breaker and other products in the Vector series: VECTOR12-VMS-XX-X/XXXX-XX Vector12 denotes a 12 kv System and Vector24 denotes a 24 kv System. Single-line diagram number. All single-line diagram numbers have a prefix "VMS" (Vector Metal-clad Switchgear) to distinguish the panel from the VCB or other withdrawable devices. Rated current of the system. For example, 1250 denotes a 1250 A system and 2000 denotes a 2000 A system. VECTOR12-X XX/XXXX Maximum breaking capacity of the system. For example, 20 denotes a 20 ka system and 32 denotes a 31.5 ka system. Vector product series whereby Vector12 denotes a 12 kv System and Vector24 denotes a 24 kv system. S or M whereby S denotes a breaker with a spring mechanism and M denotes a breaker with a magnetic actuator. Maximum breaking capacity of the breaker. For example, 20 denotes a 20 ka system and 32 denotes a 31.5 ka system. Rated current of the breaker. For example, 1250 denotes a 1250 A system, 2000 denotes a 2000 A and 3200 denotes a 3150 A. Vector breaker list Module Rated voltage (kv) Actuator Max. breaking capacity (ka) Rated current (A) Withdrawable Vector S (Spring mechanism) M (Magnetic actuator) S (Spring mechanism) ~ Additional Ordering Information: Standard Panels require rear access during installation. Indicate for special projects where rear access is not available. Auxiliary power ratings. Relays, control and monitoring system requirements. Cable termination Options. IP ratings. 4

8 Technical Parameters The following are the technical parameters for the Vector Metal-clad Switchgear under normal operating conditions: Item Unit Vector12-VMS/1250 Vector12-VMS/3150 Vector24-VMS/1250 Rated Voltage kv Power Frequency withstand voltage (60 sec) to earth and between phases kv Power Frequency withstand voltage (60 sec) across the isolating distance kv Lightning impulse voltage across isolating distance kv Lightning impulse voltage to earth and between phases kv Frequency Hz 50~60 50~60 50~60 Rated current of switchgear and respective load-carrying components A 630~ ~ /1250 Rated short circuit breaking capacity of Circuit Breaker ka 20/25/ / /25/31.5 Short-circuit withstand capacity of switchgear and components ka/s 31.5 / 4* 31.5 / 4* 31.5 / 4* Fault-making capacity of breaker ka Fault-making capacity of earthing switch ka Class of earthing switch --- E1 (2 makes)** E1 (2 makes)** E1 (2 makes)** DC time constant of rated short circuit current ms DC component of breaker % Operating sequence O-0.3 sec-co-180 sec-co Mechanical endurance of breaker operations 20,000/50,000*** Electrical endurance of breaker operations 20,000 * Certi ed at 31.5 ka / 3 s with KEMA and subsequently certi ed at 31.5 ka / 4 s with CNACL. ** E2 Class Earth-Switch (5 making duties) is available upon request by clients. *** Mechanical endurance of spring mechanism is 20,000 times Mechanical endurance of permanent magnet actuator is 50,000 times. 5

9 Standard Product Features The standard Vector series switchgear or controlgear units have been designed as metal-clad switchgear systems in compliance with the latest IEC specifications which emphasises the continuity of service of the rest of the switchgear in the event of a shutdown in one of its sections. Therefore the Vector Switchgear has been designed with the following features: The Vector switchgear unit consists mainly of the following compartments: the busbar compartment, the circuit-breaker compartment, the cable compartment, the PT compartment and the Instrumentation compartment. Partitions between the compartments are metallic and earthed. Partitions between compartments have an IP2X degree of protection unless otherwise stated. Each compartment has its own separate metalencased ventilation air-duct. All high voltage conductors within the switchgear are encased within these separate compartments. Mechanical interlocks prevent access to the serviceable compartments unless the conductors have been de-energized, isolated and earthed. The Vector complies with the LSC2B classification of IEC , whereby the busbar compartment and the cable compartment, in the solutions where it does not have an earth switch, may remain energized when the main circuit-breaker compartment is opened and the circuit breaker has been withdrawn. The panels are designed with front-access for all normally serviceable sections of the switchgear and rear-access being necessary only in the cable connection phase during installation. The switchgear is completely assembled, wired-up and tested in the factory before delivery. The Vector enclosures are fabricated from high grade pickled & oiled steel sheets of 2.5mm thickness in general and more than 3mm thick where necessary. The sheet steel is chemically treated before painting to provide adequate protection against corrosion and weathering. The standard Vector panel has an IP 3X rating with all internal partitions having an IP2X ratings. All internal partitions will be directly connected to the main earthing busbar. Ratings of up to IP44 is available upon request by the customer. 6

10 Elements of the Vector Metal-clad Switchgear Unit: A1 : Busbar compartment A2 : Circuit breaker compartment A3 : Cable compartment A4 : Instrumentation compartment A5 : Potential transformer compartment C1 : Main distribution busbar C2 : Feeder bus D1: Vector VCB E1: Earth switch E2: Current transformers E3: Voltage indicators E4: Surge arrestors Above: Cut-away side view of a Vector switchgear unit without Potential. E5: Potential transformers E6: Current limiting fuse F1: Air-duct leading to VCB compartment F2: Air-duct leading to the busbar compartment S3A: Cooling outlet for cable compartment S3B: Cooling outlet for busbar compartment S3C: Cooling outlet for circuit breaker compartment 10 : Trunking for auxiliary wiring Above: Cut-away side view of a Vector switchgear unit with Potential. 7

11 The Busbar Compartment The busbar compartment is located on the rear top section of the panel. Epoxy resin bushings support and space the busbars. These bushings are mounted on a stainless steel plate which in turn acts as a partition between the busbar compartments of adjacent panels. Every busbar compartment is thus partitioned from the adjacent compartment. The main distribution busbars are made of high conductivity copper with fully radiused edges. The busbars are silver-plated. Busbar insulation and insulated joint coverings will be used where necessary to meet enhanced insulation requirements so that all current-carrying parts are fully-covered and insulated. Epoxy resin busbar bushings mounted on a stainless steel partition. A top-entry solution is available whereby the busbar conductors exit from the top of the panel to facilitate busbar bridging, or the mounting of an earth-switch or PT box on the top of the panel. The Vector busbar system is completely insulated using a silicone compound layer. The busbar system with top-entry arrangement. 8

12 The PT Compartment The PT (Potential Transformer) compartment is located at the front lower section of the panel. The potential transformers within are protected by current limiting fuses. The PT compartment is accessed by opening the lower front door once the switchgear has been isolated and earthed, thereafter removing the protective steel covering behind the compartment door. The panel door is also electrically interlocked so that if the conductors within are live, the door may not be opened. The potential transformers may be of the xed -type or mounted on a withdrawable truck. The Cable Compartment This compartment is located at the lower rear section of the panel. It houses the cable termination bus, the earth-switch, the current transformers, the voltage indicators and the surge arrestors. The main earth-bar also runs through this chamber. Cable supporting brackets are located at the base of the cable compartment. Clients should specify the type of cables they are using to ensure that the correct cable glands and cable supports are provided. Humidity and temperature control apparatus may also be mounted within this compartment depending on customer s speci cations. Different PT's are available depending on application requirement. A view of the cable compartment showing the current transformers. 2CT or 3CT version available depending on application. 9

13 The VCB Compartment The VCB Compartment is located in the front center section of the panel. It can be accessed from the front of the panel by opening the compartment door. The withdrawable VCB Vector is inserted into this compartment. When the VCB is not in the compartment, live parts are partitioned by a pair of steel shutters. The shutters are individually openable and can be padlocked seperately to prevent access when the VCB is not in the compartment. Special insulated shutters are available upon request. The degree of protection for the shutters is IP The Vector12-S32 VCB on a service trolley before the panel. 2X. The VCB Compartment is equipped as standard with full mechanical interlocking which interfaces between the VCB Compartment door, the earthing switch, the racking system on the withdrawable VCB truck, the shutters and the socket for auxiliary circuitry. The Vector12-S32 VCB being inserted into the VCB Compartment of the Vector12-VMS panel. The auxiliary control system of the panel and that of the withdrawable circuit breaker are connected via the auxiliary socket on the panel and the auxiliary plug on the circuit breaker. A service truck is available to facilitate the insertion or removal of the VCB. Vector12 VCB in the test-position within the VCB Compartment with the auxiliary socket unplugged. 10

14 The Instrumentation Compartment The instrumentation compartment is located in the front upper section of the panel. This compartment houses the measurement and control devices of the panel such as protection relays, am meters etc. The exact types of devices housed within this chamber will vary according to the functions of the panel. Instrumentation and protection devices being mounted on the door of the instrument compartment. The Auxiliary Control System Wiring for the secondary system is housed in special metallic trunking to protect the system from interferences from the primary system. Cable glands are used when the cables need to pass through the steel partitions between the chambers.the secondary system may be of the following voltage ratings: 24V DC 48V DC 110V AC/DC 220V AC/DC Wiring termination within the instrument compartment A variety of relay and other control devices may be incorporated into the auxiliary control system of the switchgear depending on the intended functions of the particular switchgear unit. Some of these functions include: Auxiliary cables with cable termination unto the current transformer. General Line Overload and Short-circuit protection Transformer protection Motor contol Un-interrupted power supply For further details of the devices available, see the section on Controlling Devices. Metal-enclosed trunking for auxiliary cables. 11

15 Safety Interlocks and Padlocks The interlocking system manages the relationship between the earth-switch, the enclosure door, the VCB, the VCB s auxiliary system and the terminals leading to the busbars or incoming cables. In brief, the system is designed so that: The VCB may not be inserted into the service position unless its auxiliary system has been plugged in, the compartment door has been closed and the earth switch has been opened. The VCB may not be inserted into or withdrawn from the service position unless it is in the open position. It is designed to ensure that when the VCB is in the service position the panel door may not be opened. It is designed to ensure that the VCB may not be accessed unless the earth switch has been closed and the live parts have been sectioned off by metallic shutters. The interlock also manages the relationship between different panels. This is done by using the interlock key. This key has to be inserted into the panel before the VCB may be inserted into the service position. When two or more panels must not be simultaneously closed, these panels share one common interlock key, so that at any one instance the key may only be inserted into one of the panels in question and at any one time only one of the VCBs may be inserted into the service position. Interlocks on the door and on the socket of the auxiliary plug. Interlocks on the door ensure that the door may only be closed when the breaker is within the panel, the auxiliary plug is in the socket and the earth switch is closed. Separate interlocking systems may be engineered for special applications. The client must specifically consult LKE and provide the speci c functional requirement to LKE for special/non standard applications. The following sections of the panel may be padlocked or key locked to prevent unauthorised access: Metallic shutters within the VCB chamber. These may be padlocked separately. The shutter covering the access to the earthswitch. The VCB Chamber Door. The Low-voltage Chamber Door. The PT Chamber Door. Padlocking the shutter armature. A key-managing system can therefore be used to ensure that different levels of personnel with different quali cations and responsibilities may only access the relevant sections of the panel. Padlocking the access to the earth-switch. 12

16 The Heat-Management System The heat-management system used in the Vector panel has been rigorously tested and proven to be reliable. It relies on the careful selection of current-carrying and therefore heat emitting components, taking into consideration their heat generation properties over time, and designing an air-cooling system which will keep the temperature-rise of the switchgear within speci cations over the service life of the switchgear. (Note: excessive heat will cause the degeneration of the quality of conductors and the breakdown of solid-insulation within the panel over time). Ventillation system for the VCB Chamber: Cool air enters the panel through 2 metal-encased ducts, entering the VCB chamber at the base of the pole-assemblies of the VCB and carries the heat out via the top of the panel. The Vector panels with nominal current ratings of up to 3150A rely on natural air-flow as a means of cooling. For ratings above 3150A, a forced-air cooling system is used to expel heat from the switchgear. The VCB compartment, Busbar compartment and the Cable compartment are the main current-carrying and heat generating sections of the panel. Each of these three compartments has its separate air-ducts. The opening of these air-ducts for the intake of cool air is located at the rear of the panels. The outlets for warmed air leaving the panel are located on the top of the panel. All the openings are covered with a ne wiremesh which satisfies the IP3X requirement. Special cooling solutions are used for panels with a protection rating which is higher than IP3X where ner mesh and special coverings will be used to prevent water from entering the panel. Ventillation system for the Busbar Chamber: Cool air enters the panel through 2 metal-encased ducts, entering the Busbar chamber at its base, and carries the heat out via the top of the panel. Ventillation system for the Cable Chamber: Cool air enters the Chamber through a meshed covered opening, entering the cable chamber at its base, and carries the heat out via the top of the panel. 13

17 Internal Arc Fault Management System Safe guarding the safety of the operator is of the first priority in the development of any switchgear design, therefore the Vector panel was designed, tested and proven to withstand internal arc faults. Test results prove that the metallic enclosure of the Vector panel can effectively prevent the effects of an internal arc fault from injuring operators and other personnel in the vacinity of the equipment. While an internal arc-fault is a rare occurance, it may be caused by the following factors: Degeneration of insulating material due to partial discharge as a result of poor operating conditions such as the presence of contaminants from polluted air or condensation. Atmospheric over-voltages or system over-voltages. Over-heating and consequent degeneration of conductors due to loosening of screws, over-tightening of screws at joints and corrosion of conductors. Pests entering the panel. Human error of leaving tools and parts in the panel. The Vector panel was designed with the prevention of the above possible causes of internal arc faults in mind, however the possibility of internal arc fault cannot be completely engineered out of any design. In the event of an internal arc fault, the following will occur rapidly: A rapid build-up of pressure within the panel enclosure. A rapid build-up of temperature within the panel enclosure. The presence of much light and sound. The panel enclosure is subjected to a high level of mechanical stresses. Metallic components will begin to melt-down, disintegrate and vaporise. If an internal arc fault is not properly controlled, it will spread to adjacent equipment and will cause severe injury to personnel in the immediate vacinity of the equipment (from the shock of the explosion, from pieces of debris expelled from the panel at a high velocity, or from the panel doors being forced open with great force due to the internal arc, or from burns arising from contact with the hot gases from the internal arc). Extensive testing has proven that in the event of an internal-arc fault in any one chamber of the panel carrying high-voltage conductors (Busbar, VCB, Cable or PT Chambers), the external structure of the Vector panel will remain intact, none of the panel s doors will be forced open, and no ame or hot gases will escape from the panel, therefore the arc-fault will be contained within the panel and injury to operators standing near the panel will be prevented. As the internal arc did not bore through the enclosure, and all earthing connections of the panel remained intact, thereby ensuring that in the aftermath of the event, service personnel could safely approach the equipment. IEC has laid out a specific methodology for the testing for as well as the specific pass criteria an internal-arc fault test. Vector Metal-clad Switchgear complies with Type A of the standard with the following pass criteria: All secured doors and converings were not forced open during the test. There was no expulsion of material from the panel which may cause human injury. No holes or openings have appeared on the external surface of the panel which may cause potenial injury to service personnel. All vertical and horizontal indicators were not set alight or burnt during the test. All earthing connections remain effectively intact. Based on IEC the Vector Metal-clad Switchgear is classed: IAC AFL. As a futher note, during the installation of switchgear, it is necessary to consider the following: The potential fault level (in ka) based on the layout of the overall power distribution system. The duration of the fault (0.1~1sec) based on the overall response time of upstream protection devices. Ventilation of the area to expel poisonous gases produced during an internal arc fault. Layout of the switchroom especially taking into consideration the height of the switchroom. Allowance for the release of pressurised gases and flying debris must be designed into the structure of the switchroom. Vector Panel after successful internal arc tests(pictures from type test report). Left: The picture shows that the pressure relief aps on top of the panel opened as intended and remained attached to the panel after internal arc in the cable chamber. Center: The pictures show the Vector Panel after a successful internal arc test of the VCB chamber, showing that no doors had been forced open during the test and the vertical and horizontal indicators had not been burnt. Right: The picture shows that the rear of the panel remained intact after an internal arc test of the cable chamber. The presence of soot ( ne black powder) is normal and cleaning away the soot reveals the panel enclosure to be intact with no openings after the internal arc test. 14

18 The Protection System The Vector Metal-clad Switchgear has been designed to withstand Short-circuit currents of up to 31.5kA for a duration of up to 4 seconds. However in the event of an internal arc fault, damage arises in a much shorter span of time. The following shows the breakdown of materials within a panel during an internal arc fault: ka 2 s Internal arc duration and the reulting damage to materials in a switchgear. To detect and eliminate a downstream fault within 100ms To minimise the damage to downstream devices arising from the fault To reduce system down-time. The Vector panels use the LKE DPR series of relays whereby the DPR-T-201 requires auxiliary power and the DPR-TC is a passive relay which may alternatively draw its power from the output of the current transformer or from a conventional auxiliary power source. The advantage of this relay protection system is that it will function despite the failure of auxiliary power supply. It will also provide 100% of the rated voltage required by the trip-coil of the VCB so that the trip coil doesn t have to operate at the 70% level. Copper Steel In the overall Vector system: Cable ms Therefore it is important to attempt to stop the fault before 100ms to prevent damage to the cables (damage to cables, conductors and steel enclosure will cause a further spread of the arcing thereby making the fault more dif cult to contain). The Protection System of the Vector panel was designed to protect downstream devices from system faults and internal arc faults whereby its purpose is to: The response time of the relay is 15ms when auxiliary power is present and less than 24ms when auxiliary power is not present (in the case of the DPR-TC). The relay has to draw its power from the output of the current transformers. In the Vector panel, the opening time of the standard Vector VCB is less than 26ms. The Breaking time is 20~36ms. Therefore in the event of a downstream fault, with the relay set at its quickest response times, the system is able to provide an adequate response in less than 100ms. 110kV Vector12 10 kv secondary wiring plug component Vector12-VMS LKE-DPR Vector 12-VMS and LKE-DPR combine to realize over-load and short-circuit protection for downstream devices. 15

19 Optical Arc Detection Relay Standard protection relays are usually designed to be fast enough in the event of an arc fault so as to trip the breaker in less than 100 ms. However in actual applications it is usual that protection relays are calibrated to have a delayed tripping response for the sake of discrimination, ie, to allow downstream breakers to trip before upstream breakers for faults occurring in the downstream network. Therefore an additional protection system is usually necessary to ensure that the breaker opens very quickly in the event of internal arc occurring in the panel itself. The Vector panel may be fitted with an Optical Arc Detection System which is light sensitive and will therefore detect arcing and respond in less than 20ms. Whereas optical sensors which are fitted in the cable compartment of the panel will detect flash-overs and cause the local breaker to trip, optical sensors which are fitted in the busbar compartment will cause the incoming breaker to trip. 110kV 110kV T2 T3 LK-ARCP M112 LK-ARCP C4 Vector12 #1 T1 Vector12 #2 10 kv 10 kv LK-ARCP L10 LK-ARCP L10 Optical Arc Detection and Protection System The Arc protection is independent of traditional and short circuit protection overload systems. One master unit manages the busbar system and slave unit manages each individual compartment of the switchboard. 16

20 Standard Design and Variants The Vector Metal-clad Switchgear is a exible product with variations to suit most existing applications. The following are some of the more common variants: Drawing A and Drawing B. The Panel in Drawing A is the standard Vector panel which incorporates a VCB, three current transformers, an earth-switch (optional) and voltage indicators (optional). Alternatively, a Disconnector Truck, or a Testing Truck may be inserted into the panel instead of the VCB. In Drawing B the panel includes potential transformers and surge arrestors in the construction. This panel is available with either xed PT's or a withdrawable PT truck. Drawing A Drawing B Drawing C and Drawing D: Drawing C shows an earth-switch box mounted above the busbar chamber to allow the earthing of the busbars. Drawing D shows PT's being mounted above the busbar chamber so that the voltage of the busbars may be measured. Drawing C Drawing D Drawing E and Drawing F: These variations are used as connections between two seperate rows of switchboards. The panel in Drawing E allows for busbar extensions which exit from the top of the busbar compartment to be connected to a bus-bridge. The panel in Drawing F allows for connecting to another panel in a back to back solution via the rear exit feeder bus. The feeder bus could also lead to an alternative cable connection box. Note that bottom entry of the cable is still available as an option despite the rear exit con guration. Drawing E Drawing F For other variations to the standard panel please refer queries to LKE. 17

21 VCB chamber module The VCB chamber module is available seperately. It is a functional chamber for withdrawable components, and switchboard manufacturers may build their panels around this unit. It is located in the front center section of the panel. The VCB chamber module incorporates all the necessary mechnical interlocks founs on a stardard Vector VMS panel, as well as the earthswitch. Frame Vector VCB Shutter Shutter Busbar terminal Terminal box Interlock device on panel door Outgoing terminal box Termination to cables linkages Earthing switch Vector Metal-clad panel VCB chamber module of Vector Metal-clad panel Outline dimension of VCB chamber module 650(800) Front view Side view Rear view 18

22 Main Components VECTOR Vacuum Circuit Breaker The Vector VCB (Vacuum Circuit Breaker) is a withdrawable (cassette-type) VCB designed for the Vector Metal-clad Switchgear System. The Vector VCB has the following features: Product range includes VCBs rated at 12kV to 24kV. Vector VCBs have a breaking capacity of up to 31.5kA. Rear view of the Vector VCB showing the disconnecting tulip-contacts. Rated current of up to 3150A for 12kV VCBs and up to 1250A for 24kV VCBs. The VCBs have encapsulated pole assemblies for ratings up to 1250A for both 12kV and 24kV breakers. Continuous insulated external surface on the pole assembly ensures that surface creepage distances between contacts exceed 450mm on 12kV breakers and exceed 560mm on 24kV breakers, giving the VCBs superior insulation features. Front view of a Vector VCB on a service truck VCBs are driven by either spring mechanism or Permanent Magnet Actuator. The unique designs of both types of mechanisms ensure greater reliability and product performance. Breakers use Leopold Contacts as their sliding contacts, which not only yield superior current carrying capabilities but will also stabilise the stem of the vacuum interrupters in the event of a short circuit. Wire frame drawing of the Vector VCB showing the three encapsulated pole assemblies. 19

23 Encapsulated pole Assembly The accumulation of dust and grime on the surface of the vacuum interrupter is one of the main causes of the breakdown of insulation on the vacuum interrupter surface and consequently a major cause of circuit breaker failure. Encapsulating the vacuum interrupter in insulating material will prevent the build up of dust particles on the vacuum interrupter surface. The unique design of the Vector VCB s pole assembly incorporates the top terminal, the vacuum interrupter, the slidingcontact assembly and the upper and lower copper conductors in one single moulding operation. Thereby it increases the continuous insulation between the upper and lower lotus contacts. Insulation hose Cover Interlock shutter Earth switch operation slot Frame Cover handle bracket handle Front view of Vector-S series VCB Encapsulated pole Assembly Auxiliary socket Insert/withdrawn operation slot Upper tulip contacts Vacuum interrupter encapsulated Lower tulip contacts Shutter drive device Handle for inserting/withdrawn Earth switch xed contacts chain wheel Side view of Vector-S series VCB Copper conductor Tulip contacts connecting to the bus-bar system Vacuum interrupter encapsulated within the resin material Continuous and seamless surface insuation of pole assembly using epoxy resin. Housing for leopold-type sliding contact system. Copper conductor Tulip contacts connecting to the cables. Insulated drive-rod with linkage to the main driving shaft. Encapsulated pole assembly of Vector-S series VCB 20

24 Spring Mechanism with low component count The design of the Spring Mechanism used on the Vector VCB was optimised to yield a device with a high performance and a low component-count. Having a low part count requires the utilisation of precision components which are produced using advanced production methods. This approach produces a few multi-functional components, and yielding a lower total component count. Housing for charging motor and gear system Tripping solenoid Main closing spring Manual charge bearing Closing solenoid and manual closing button VCB closing latch Cam-shaft assembly Therefore the overall mechanism is not only cost-economic and reliable, but also requires minimal maintenance in the long run. The mechanism on the Vector has a mechanical endurance of more than 20,000 operations with re-calibration after every 3000 operations. Manual open push-button Trip-prop VECTOR-S spring mechanism Motor Aux. switch Spring mechanism Front view of Vector-S series VCB Operation counter Closing/Opening indicator Closing button Manual charge bearing Opening button Charging indicator Interlock Shutter Earth switch operation slot Insert/withdrawn operation slot Operation panel of VECTOR-S Series VCB 21

25 Permanent Magnet Actuator The permanent magnet actuator is a drive system which utilises electro-magnetic force to drive the VCB. The VCB is held closed by the permanent magnets. The advantage of this system is that it uses very few components, with the plunger being the only moveable component. Therefore the mechanism is capable of 50,000 operations with no interim maintenance. M20 M25 / M32 VECTOR-M permanent magnet actuator Also used in systems whereby the breaker is expected to behave like a magnetic contactor. Auxiliary socket Insulation hose Switch module Control module Capacitor Permanent magnet actuator Handle Bracket Handle Front view of Vector-M series VCB Manual tripping device Controller Status indicator Closing button Opening indicator Opening button Charging indicator Opening/ closing indicator (mechanism) Closing indicator Operation counter Interlock Shutter Interlock slot Insert withdraw operation slot Operation panel of VECTOR-M Series VCB 22

26 Other withdrawable devices On request the Vector Switchgear may be equipped with other functional withdrawable devices. These include the following: Disconnector Truck. PT Truck. CT Truck. Earthing Truck with no fault-make capability. Earthing Truck with fault-make capability. The Disconnector Truck This device links the top and bottom terminals in the panel when it is in the service position. It is used as an economic substitute for a VCB in sections of the network where it acts only as an isolating device with no load breaking or load-making capability. The Vector Disconnector Truck sitting on a service trolley. The PT Truck The PT Truck can only be inserted into the PT compartment and it is not designed to be inserted into the VCB compartment. It is used to allow for the easy removal or insertion of of the PTs into the panel. It allows the PTs to be easily re-inserted into the panel after they have been calibrated or tested at a remote location. The CT Truck The CT Truck may be inserted into the VCB compartment of the panel. This allows the CTs to be tested at a remote location and easily re-inserted into the panel. The Earthing truck with no fault-make capability. Two types of Earthing truck with no fault-make capabilities are available whereby one type is inserted to earth the bus-bar only, and the other type is inserted to earth the devices within cablecompartment. These earthing trucks have shortcircuit withstand capability and may be used during maintenance to ensure no leakage of electricity to the downstream network. The Vector withdrawable PT Truck. Earthing Truck with fault-making capability. This type of truck carries out a similar function to the fault-making earth-switch. This truck is classed as an E2 device with a 5-make capability. The device has two variants of which one will earth the bus-bar system and the other will earth the devices in the cable compartment when they are inserted into the service position and closed. This earthing truck also allows for a quick-opening after a fault-making event in a manner similar to the VCB. Vector Earthing Truck with fault-making capability used for earthing the cable compartment. 23

27 Main fixed components inside the panel Current transformer Current transformer is casted in epoxy resin, usually, it is used to measure and relay information to measurement and protection devices. Product complies with IEC Product s dimension complies with DIN Current transformer Voltage transformer Voltage transformer is casted in epoxy resin, it is used to relay information to measurement and protection device. It can be mounted on the transformer truck. Product complies with IEC Product s dimensions complies with DIN Normal DPR-TC passive protection device DPR-TC range of passive protection device are suitable for distribution applications of voltage level 24kV and below. Relying on the CT to supply its power directly, it doesn t need an external secondary power supply. Equipped with low-power comsuming tripping device. With phase timed overcurrent protection, phase instantaneous overcurrent protection, earth timed overcurrent protection and earth instantaneous overcurrent protection. Local communication interface RS232, longdistant control interface RS485. Voltage transformer DPR-TC passive protection device Lightning arrester Lightning arrester is used to limit voltage surge. The type of product apply to the following Lightning arrester standards: JB/T DL/T Earth switch The earth switch is located at the back lower section of VCB chamber module of the panel, moving and fixed contacts of earth switch are made with high-quality copper contact material, and are silver-plated. This component complies with IEC Earth switch Voltage presence indicator system Voltage presence indicator system is a live-line voltage detection system that is used in panels, customer have the choice of various types of this device according to different application requirements. Voltage presence indicator/sensor system 24

28 Standard Solutions The following are solutions for line/distribution switchgear units without Current. Solution Number VMS-A0-1 VMS-A0-2 VMS-A0-3 VMS-A0-4 VMS-A0-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current less than 1250 A. Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current more than 1250 A. Ratings of Potential must be speci ed seperately. Option available with busbar earthing-switch or busbar PT's mounted on top of the panel in a separate boxenclosure. 25

29 Standard Solutions The following are standard solutions for line/ distribution switchgear units with 2 current transformers. Solution Number VMS-A2-1 VMS-A2-2 VMS-A2-3 VMS-A2-4 VMS-A2-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current less than 1250 A. Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current more than 1250 A. Ratings of Current and Potential must be speci ed seperately. Option available with busbar earthing-switch or busbar PT's mounted on top of the panel in a separate boxenclosure. 26

30 Standard Solutions The following are standard solutions for line/ distribution switchgear units with 3 current transformers. Solution Number VMS-A3-1 VMS-A3-2 VMS-A3-3 VMS-A3-4 VMS-A3-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current less Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current more Ratings of Current and Potential must be speci ed seperately. Option available with busbar earthing-switch or busbar PT's mounted on top of the panel in a separate boxenclosure. 27

31 Standard Solutions The following are solutions for line/distribution switchgear units without Current with top cable exit: Solution Number VMS-B0-1 VMS-B0-2 VMS-B0-3 VMS-B0-4 VMS-B0-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1950mm(D) for panels with rated current less Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1950mm(D) for panels with rated current more Ratings of Potential must be speci ed seperately. 28

32 Standard Solutions The following are standard solutions for line/ distribution switchgear units with 2 current transformers Solution Number VMS-B2-1 VMS-B2-2 VMS-B2-3 VMS-B2-4 VMS-B2-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1950mm(D) for panels with rated current less Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1950mm(D) for panels with rated current more Ratings of Current and Potential must be speci ed seperately. 29

33 Standard Solutions The following are standard solutions for line/ distribution switchgear units with 3 current transformers. Solution Number VMS-B3-1 VMS-B3-2 VMS-B3-3 VMS-B3-4 VMS-B3-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1950mm(D) for panels with rated current less than 1250 A. Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1950mm(D) for panels with rated current more Ratings of Current and Potential must be speci ed seperately. 30

34 Standard Solutions The following are solutions for sectionaliser units without current transformers: Solution Number VMS-C0-1 VMS-C0-2 VMS-C0-3 VMS-C0-4 VMS-C0-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2650mm(H) X 1550mm(D) for panels with rated current less Standard Panel dimensions are: 800mm(W) X 2650mm(H) X 1550mm(D) for panels with rated current more Ratings of Potential must be speci ed seperately. 31

35 Standard Solutions The following are standard solutions for sectionaliser units with 2 current transformers: Solution Number VMS-C2-1 VMS-C2-2 VMS-C2-3 VMS-C2-4 VMS-C2-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2650mm(H) X 1550mm(D) for panels with rated current less Standard Panel dimensions are: 800mm(W) X 2650mm(H) X 1550mm(D) for panels with rated current more Ratings of Current and Potential must be speci ed seperately. 32

36 Standard Solutions The following standard solutions are for sectionaliser units with 3 current transformers Solution Number VMS-C3-1 VMS-C3-2 VMS-C3-3 VMS-C3-4 VMS-C3-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2650mm(H) X 1550mm(D) for panels with rated current less Standard Panel dimensions are: 800mm(W) X 2650mm(H) X 1550mm(D) for panels with rated current more Ratings of Current and Potential must be speci ed seperately. 33

37 Standard Solutions The following are solutions for sectionaliser units without current transformers: Solution Number VMS-D0-1 VMS-D0-2 VMS-D0-3 VMS-D0-4 VMS-D0-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current less than 1250 A. Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current more Ratings of Potential must be speci ed seperately. 34

38 Standard Solutions The following are standard solutions for sectionaliser units with 2 current transformers: Solution Number VMS-D2-1 VMS-D2-2 VMS-D2-3 VMS-D2-4 VMS-D2-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current less Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current more Ratings of Current and Potential must be speci ed seperately. 35

39 Standard Solutions The following standard solutions are for sectionaliser units with 3 current transformers: Solution Number VMS-D3-1 VMS-D3-2 VMS-D3-3 VMS-D3-4 VMS-D3-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current less Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current more Ratings of Current and Potential must be speci ed seperately. 36

40 Standard Solutions The following are standard solutions for measurement units with 2 current transformers: Solution Number VMS-E2-1 VMS-E2-2 VMS-E2-3 VMS-E2-4 VMS-E2-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current less Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current more Ratings of Current and Potential must be speci ed seperately. 37

41 Standard Solutions The following are standard solutions for measurement units with 3 current transformers: Solution Number VMS-E3-1 VMS-E3-2 VMS-E3-3 VMS-E3-4 VMS-E3-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential available as an alternative Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current less Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current more Ratings of Current and Potential must be speci ed seperately. 38

42 Standard Solutions The following are standard solutions for Potential Transformer modules for inspecting busbar voltage levels: Solution Number VMS-F0-1 VMS-F0-2 VMS-F0-3 VMS-F0-4 VMS-F0-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Fixed Potential availables an alternative Fixed Potential availables an alternative Fixed Potential availables an alternative Fixed Potential availables an alternative Fixed Potential availables an alternative Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current less than 1250 A. Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current more than 1250 A. Ratings of Current and Potential must be speci ed seperately. 39

43 Standard Solutions The following are standard solutions for busbar sections: Solution Number VMS-G0-1 VMS-G0-2 VMS-G0-3 VMS-G0-4 VMS-G0-5 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Surge arrestors and voltage indicators optional Surge arrestors and voltage indicators optional surge arrestors and voltage indicators optional Surge arrestors and voltage indicators optional Surge arrestors and voltage indicators optional Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current less Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current more Ratings of Current and Potential must be speci ed seperately. 40

44 Standard Solutions The following are standard solutions for busbar sections: Solution Number VMS-G0-6 VMS-G0-7 VMS-G0-8 VMS-G0-9 VMS-G0-10 Single-line diagram Rated Current (A) 630~ ~ ~ ~ ~3150 Vector VCB Current Potential High Voltage Fuses Earthing Switch Surge Arrestors Voltage Indicator Remarks Surge arrestors and voltage indicators optional Surge arrestors and voltage indicators optional surge arrestors and voltage indicators optional Surge arrestors and voltage indicators optional Surge arrestors and voltage indicators optional Standard Panel dimensions are: 650mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current less Standard Panel dimensions are: 800mm(W) X 2050mm(H) X 1550mm(D) for panels with rated current more Ratings of Current and Potential must be speci ed seperately. 41

45 Outline dimension of Vector Vector12-M Vector12-S20/25/ Vector24-S20/25/