Protection and control P. 1 /2. Smart earth leakage protection

Transcription

1 Protection and control P. 1 /2 Smart earth leakage protection

2 P. 1 /2 Smart earth leakage protection Introduction 5 P.1 - Industrial earth leakage protection Product selection table 13 WG Earth leakage transformers, WG series 15 RGE / RGE-R Electronic earth leakage relay with external transformer of the WG Series 16 RGU-10 / RGU-10 C Electronic earth leakage relay with external transformer of the WG Series 18 CBS-4 / CBS-4 C Earth leakage monitoring and signaling unit of the external transformer of the WG Series 20 CBS-8 Earth leakage monitoring and signaling unit of the external transformer of the WG / WGP Series 22 WGP Earth leakage Transformers of the WGP Series (only for CBS-8) 24 WN Earth leakage transformers, WN series 25 RN / RN-R Electronic earth leakage relay with external transformer of the WN Series 26 RN-10 Electronic earth leakage relay with external transformer of the WN Series 28 WRU Earth leakage relay with built-in transformer (type A) 30 WGBU Transformer with built-in earth leakage relay 32 WRN-22 Earth leakage relay with built-in transformer 35 Relation between products and accessories 37 P2- Self-reclosing overload and earth leakage protection Earth leakage protection and self-reclosing REC2 Self-reclosing earth leakage relay P2-47 P1/2-2

3 Protection and control P. 1 /2 WRU RA Earth leakage relay with built-in transformer P2-49 WRU-10 RAL Differential relay with built-in transformer and display (type A) P2-52 RGU-10 RAL Earth protection Relay WG Series P2-54 CBS-4 RA / RAL Earth leakage relay station WG Series P2-56 CBS-8 Earth leakage monitoring and signaling unit of the external transformer of the WG / WGP Series P2-58 Overcurrent and earth leakage protection, earth leakage self-reclosing WRKRT-25 Earth leakage relay with built-in transformer P2-60 MCB MCB Series Circuit-Breaker P2-62 WRU-25 RA-MT Earth leakage relay with built-in transformer P2-64 WRT-6 Earth leakage relay with built-in transformer P2-66 RGU-10 MT Earth leakage Relay WG + MT Series P2-68 RGMT Earth leakage Relay WG + MT Series P2-70 MT Motorized circuit breaker (up to 63 A) P2-72 MT-FDE Motorized circuit-breaker (from 63 A) P2-74 WRGMT Complete overload and earth leakage protection and reclosure equipment P2-76 Earth leakage protection and self-reclosing RRM Overload reclosing relay P2-77 P1/2-3

4 P. 1 /2 Earth leakage protection P1/2-4

5 Earth leakage protection P. 1 /2 Smart earth leakage protection The "protection" and "continuity" of the electrical power supply are two terms that must not be separated if we wish to guarantee the safety of users and electrical installations. The recent addition of receivers or loads that generate distortion in the electricity grid (speed variators, electronic startup units, computer equipment, lighting with electronic ballasts, etc.) has made necessary the use of protection systems that can distinguish between defects in the installation and the electrical alterations that cause the unwanted tripping of protection systems. The new range of earth leakage protection products offers state-of-the-art performance to guarantee the continuity and safety requirements: 4 earth leakage protection methods Monitoring in true root mean square. High frequency filtering Inverse curve delay (instantaneous and selective) Adjustment of the nominal sensitivity trigger Display of the fault current (monitoring of protection systems) Monitoring the status of protections allows us to do the following in the electrical installation: Analyse the insulation conditions. Preventive and corrective maintenance. Reduce production downtime. Decrease maintenance costs. Quick location of faults. P. 1 /2 SAFETY OF PERSONS AND MATERIALS SAFETY OF PERSONS AND MATERIALS CONTINUITY ELECTRICAL POWER SUPPLY Immunised protection Monitoring Remote control Reset Immunised protection Monitoring Immunised protection Protection P1/2-5

6 P. 1 /2 Earth leakage protection Definition When the earth leakage protection system detects a fault current, it acts on the electrical installation being protected, opening the circuit while interrupting the supply of electrical energy, thus preventing the danger of electrocution for persons when the fault current reaches dangerous values, either as a result of direct or indirect contact, including any potential damage caused to goods and materials. An earth leakage protection system is composed of three clearly different parts: Detecting element or sensor Relay Circuit breaker by the sensor and either sends the trigger signal to the associated circuit breaker or not, depending on the sensitivity and delay time values programmed. Circuit breaker: This element acts as the current interrupting element. It can be a circuit breaker (with trigger coil), a contact, etc. These three elements can be found in CIRCUTOR's products with different configurations: All elements separately Relay with internal transformer Detecting element or sensor: Current transformer that detects the earth leakage current of active conductors in an installation, sending a proportional signal to the relay. It can have a toroidal or rectangular geometry, depending on the arrangement of plates or the wiring of the installation location. The correct operation of the sensor requires the path of capacitors to be as perfectly aligned as possible. Relay: Smart protection element. It measures and treats the signal received Immunised earth leakage protection Nowadays, "sympathy" or unwanted triggers are quite common in modern installations. In these cases, one or more earth leakage switches are triggered simultaneously, protecting an installation from the leakage currents sent to earth as a result of capacitive effects caused by the installation. Said capacitive effects can explained by two reasons: The installation's cables cause earthing condensation effects. The longer the cable, the greater the capacity effect The capacitors of EMI filters in the equipment with electronic power regulation The different loads or consumption of an installation can be classified in two main groups, depending on the type of insulation from earth: Loads with no earthed capacitors The insulation existing between the unit and the earthing elements can be represented with a pure Ohmic resistance. If the resistance is not high enough, no current will pass through the earthing elements. The leakage current is zero (current passing to earth under normal conditions). In case there is an insulation fault, current will pass through earthing elements, the so-called fault earthed current, I d. P1/2-6

7 Earth leakage protection P. 1 /2 In this case, we must simply adjust the sensitivity and delay time to guarantee the adequate protection. Loads with earthed capacitors The current passes through the earthing elements as a result of the unit's operations through its capacitors. In addition, the length of cables in an electrical installation can lead to capacitive earthing faults, which would lead to this situation. The current can be injected with two methods: Permanent Leakages. The unit injects current in the earthing elements permanently. This type of behaviour is closely tied to the use of EMI filters, which are installed in most machines or loads with electronic power regulation, in order to comply with the electromagnetic compatibility directives. This type of filter prevents the high frequency distortion generated by the receiver from being returned to the grid. However, it is transferred through the earthing capacitors. It also transfers indirectly the fundamental frequency and its corresponding harmonics, so that the leakage is usually a set of overlapping high and low frequency signals. Therefore, it increases the risk of an earth leakage trip with no real earth leakage current. Transient Leakages. It has the same capacitive effects of cables and the filters mentioned above for transient overvoltages caused by grid switching effects, the connection-disconnection of circuits or effects that are simply caused by atmospheric agents. In case of loads with earthed capacitors, the basic problem for the protection of the system is to distinguish which earthed current is part of the unit's operation and which is part of an insulation defect. Electromechanical earth leakage relays do not usually solve these situations. The immunised earth leakage protection offered by CIRCUTOR has evolved in relation to five factors, in order to satisfy the needs of our customers, catering for the current demand as regards the safety and continuity of the supply of electricity: MEASUREMENT IN TRUE ROOT MEAN SQUARE (TRMS) AND CLASS A IMMUNE TO TRANSIENT LEAKAGES HIGH FREQUENCY FILTERING ADJUSTMENT OF THE TRIGGER OF I n INVERSE CURVE P1/2-7

8 P. 1 /2 Earth leakage protection Measurement in TRMS and Class A The voltage and current wave shapes have stopped being complete sine waves since the loads distributed in the installations are not linear. The continuous and harmonic components can distort the wave shapes, whereby it will be necessary to take more accurate measurements. The current range of electronic earth leakage switches measures the rootmean-square-value (TRMS) of leakage currents by sampling it. The wave shapes in installations with linear resistive loads are pure sinewaves. However, the figure shows how the mean value will not work to measure the root-mean-square-value with accuracy when it stops being a complete sine-wave. In accordance with these problems, the IEC Switch Standard determines the types of operation, depending on the type of wave. Two types are defined, Class AC and Class A. CLASS AC The earth leakage devices used in domestic installations or that protect loads that do not cause distortions can be of the AC Type. These devices are marked with a symbol, in compliance with the IEC Standard. CLASS A In the presence of non-linear receivers, Type A earth leakage protection systems must be used, which means that rectified currents can be measured with a continuous component of up to 6 ma, including non-distorted currents (AC type), marked by the corresponding IEC Standard. Immunity against transient leakages The IEC Standard defines two types of ray-type curves to check the correct operation of an earth leakage device: an overload and an overvoltage wave. The overload wave shows the effects caused in the measurement of the earth leakage device and the overvoltage wave shows the effects in the power supply. The behaviour of earth leakage protection units in the case of transient overloads and overvoltages is vital to maintain the continuity in the supply of electricity. Therefore, the immunised earth leakage protection relays manufactured by CIRCUTOR can support very high peaks. Current: Curve 8 / 20 µs: 5 ka Voltage: Curve 1.2 / 50 μs: 4 kv P1/2-8

9 Earth leakage protection P. 1 /2 High-frequency current The IEC / UNE Standard describes the effects of currents passing through the human body for a frequency of 50 Hz. As you can see, the effect depends on the root-meansquare-value of the current passing through the body and the time it takes to pass through. In accordance with the effects, we can establish zones 1 (zone with no perception) and 2 (perception zone) as safe work zones. Therefore, in terms of the protection of persons, earth leakage protection systems must act on those zones. previous graph, which indicates that the current is less dangerous.see the table attached, in accordance with IEC 479-2/ UNE , where a fault current of, for example, 45 ma at 500 Hz has the same effect as a fault current of 30 ma at 50 Hz. In the case of receivers with EMI filters, we can consider that these inject a high-frequency earthed current (>2 khz) and a low frequency current. The use of type A earth leakage protection systems is specified in these cases. Frequency factor F f Frequency f When the frequency increases, the curves are displaced to the right of the a. Perception threshold b. "No-drop" threshold c1 / c2 / c3. Fibrilation threshold Delay time 1. No perception 2. Perception 3. Reversible effects. Muscle tetany 4. Potentially irreversible effects Sensitivity Adjustments of I n 100 % I n The IEC Standard specifies that earth leakage switches must be triggered when the fault earthed current is between 50% and 100% of the sensitivity value (I n ) selected. This means that the values that exceed 50% can set off the earth leakage switch trigger. This type of case is common with electromechanical switches. In the case of electrical energy installations, these have evolved in such a way that the adjustment of protection can cause great problems, since it is too low. The electronic earth leakage protection systems offered by CIRCUTOR determine the trigger near 100 % of I n. Therefore, we have a lower risk of triggers and less interruptions in the installation's supply than when the fault current is lower than I n. The following graphs show that with an identical evolution of the fault earthed current in the same installation, the behaviour of the earth leakage switch is different, even when the sensitivity level of I n is the same in both cases. This adjustment of I n allows us to concentrate more loads that incorporate earthed capacitors within the same line being protected. For example, in a computer installation: Each unit diverts a current, I leakage, of 2 ma through the EMI filter capacitors included. At a sensitivity of (I n ) 30 ma, you can install 7 computers with the electromechanical earth leakage switches. However, if you use CIRCUTOR's electronic switches you can install a total of 12. Fault earthed current I d Fault earthed current I d 50 % I n Time, t 100 % I n 85 % I n Time, t P1/2-9

10 P. 1 /2 Earth leakage protection Inverse curve t I d I n The IEC Standard allows us to incorporate a circuit opening delay for the circuit being protected, which will depend on the leakage current level. Therefore, the greater the fault current, the lower the delay. Two types of curves are specified, as shown on the following table of values: Instantaneous Selective The application of these curves to our earth leakage systems can be used to increase the continuity in the installation's power supply and avoid unwanted trips. Standardised operating time values (s) Type Instantaneous Selective I n (A) All values > 0,03 I n 0,3 0,5 2. I n 0,15 0,2 5. I n 0,04 0, A 0,04 0,15 Maximum Monitoring protection elements The leakage current value must be available at all times in many applications. This information is quite useful for the installation's preventive and corrective maintenance tasks, since we can act before triggers are set off. For example, if the insulation degree of a machine is reduced, the earth leakage current increases, and since we have the said information, we can implement the appropriate corrective actions to avoid the trigger from being set off. The idea is to integrate the earth leakage currents in the installation's energy control system, thus controlling an additional quantity. Depending on the type of product, the information can be presented as follows: In the earth leakage relay, through the display. Through the RS-485 communications system. With an auxiliary measurement unit. In addition, records and logs of the insulation behaviour of the installation can be taken. Remote control and reset In the case of earth leakage protection systems in installations that require a continuous supply of energy, with no maintenance staff present, the remote control and reset (or self-reclosing) functions are very useful. Remote control functions can be carried out through communications systems (RS-485, Ethernet, etc.), using the Power- Studio Scada software. This function can control the status of protection systems and perform a set of actions through a computer and communications systems. P1/2-10

11 Earth leakage protection P. 1 /2 Earth leakage protection systems with self-reclosing Given the current efficient personal and material protection requirements and obligations, and the complexity of some installations that require the continuous supply of electrical energy with the use of overload and earth leakage protection systems, CIRCUTOR has developed a wide range of units that make safety and service continuity compatible. Self-reclosing systems are an ideal solution for installations that need a constant supply of electrical energy, without the need for the usual maintenance staff: Rural installations Refrigeration chambers Public lighting Mobile telephony repeaters Traffic lights Lighting of tunnels ATMs Cable television Etc. The type of protection element installed, those that can be reclosed and under which reclosing conditions must be known by all self-reclosing systems. Self-reclosing systems act in accordance with the following: Earth leakage current (earth leakage) Earth leakage current (earth leakage) + overload and short-circuit (circuit breaker). Elements that form an self-reclosing system TRANSFORMER RELAY Treatment of the signal, measurement and trigger CIRCUIT BREAKER monitored Earth leakage transformer Circuit breaker The earth leakage transformer detects the earth leakage. It can be built-in on a relay or as an external element. Self-reclosing relay Self-reclosing relays add a series of performance features (self-reclosing, thermal or overload protection) to the proven reliability and security of non-reclosing earth leakage protection relays. It performs the following functions: Detection of anomalies (earth leakage or overload) through the signal generated by the transducer. They analyse the anomaly to see if it must generate an alarm, depending on the parameters programmed. They also act on power elements, which perform the grid load connectiondisconnection tasks. The circuit breaker always interrupts the flow of power, which supports the power in the line protected and is an external element of the relay. The circuit breakers that can be associated to self-reclosing relays are as follows: Motorized circuit breaker (MT) Contact circuit breaker with remote control (MCB), with a dual circuit breaker and contact function (the function of the contact is bistable). of the circuit breaker: Nominal current (in contacts) Nominal current and thermal protection curve (in circuit breakers) of the control inputs of the operational element Circuit-breaking power Auxiliary NO or NC signalling of the circuit breaker's status P1/2-11

12 P. 1 /2 Earth leakage protection Parameters related to self-reclosing relays Relay status indicator The indications are associated to the type of protection, distinguishing between instantaneous triggers and interlockings. The indications are sent by the relay (LED) and, optionally, by auxiliary contacts. Another type of visualisation, depending on the relay, is the instantaneous trigger value and the number of total reclosures. Nominal trigger point of protections Standard values: Earth leakage protection 30 ma - 3 A Overload protection 6 A - 63 A Timer (delay) Minimum time that the earth leakage must last before setting off a relay trigger. Standard values: 20 ms - 1s. Relay power supply and tolerance Self-reclosing relays need a permanent form of auxiliary power supply in order to manage the self-reclosing operations. Standardised value: 230 Vac ± 15 % Optional: 48, 110 or 400 Vac Reclosing meter reset time. To avoid the accumulation of triggers that do not correspond to the same anomaly, a reset time is defined for the reclosing meters, provided that the maximum number of reclosures is not exceeded. Example: The WRU-25 RA relay has a maximum number of reclosures available before being pushed to its interlocking. ON position. This is when the reset timer of the reclosing meter will be set off. The RESET option starts the relay, resetting the reclosing meters. Local (with the keys) and remote test and reset Self-reclosing earth leakage relays offer the same performance as non-reclosing relays. It enables the verification of the correct operation of the relay with local TEST and RESET functions, using the keys on the relay, including remote functions with specific inputs. The RESET option resets the relay and the reclosing meters. Number of reclosures, distinguished by type and number of self-reclosing Each relay enables a maximum number of reclosures before setting off the interlocking. The meter will be reset automatically if the maximum number of reclosures is not exceeded within a preestablished period of time (reset time of reclosing meters). This number will be different, in accordance with the type of self-reclosing. Output relay Number of relays With interlocking NO or NC Output contact Time between reclosures Time the relay takes between the trigger and the self-reclosing. It can be linear or exponential. In installations with a transient earth leakage fault that lasts 50 seconds, the relay is triggered 4 times and reclosed 3 times (8 s + 16 s + 30 s). During the timing of the third self-reclosing, the fault disappears, so that the relay will remain in the P1/2-12

13 Self-reclosing overload and earth leakage protection P.2 Product selection table Equipment Protection Reclosure Associated circuit breaker External toroidal Page REC2 Earth leakage switch WRU RA Contactor WRU-10 RAL Contactor RGU-10 RAL Contactor Type WG 54 CBS-4 RA Contactor Type WG 56 CBS-8 Contactor Type WG / WGP 58 WRKRT-25 + circuit breaker Circuit-breaker MCB-T / MCB-P WRU-25 RA-MT + circuit breaker + circuit breaker Circuit breaker MT Type WG 64 WRT-6 + circuit breaker + circuit breaker Circuit breaker MT RGU-10 MT + circuit breaker + circuit breaker Circuit breaker MT Type WG 68 RGMT + circuit breaker + circuit breaker Circuit breaker MT Type WG 70 RRM Circuit breaker Circuit breaker Circuit breaker MT P2-45 P2-45 P.2

14 P.2 Self-reclosing overload and earth leakage protection PP P2-46

15 Self-reclosing overload and earth leakage protection P.2 Earth leakage protection and self-reclosing RCCB with Self-reclosing system REC2 Self-reclosing earth leakage relay Description REC2 is a 2 or 4-pole earth leakage switch associated to a compact motor and control set that enables the automatic and safe reclosure of the installation, provided that the leakage is not permanent. The earth leakage switch is reclosed automatically, in accordance with the work mode selected (switch on the front): Time sequence mode: after a switch trip, REC2 will make 6 reclosing attempts, with a timer set at 10, 20, 30, 60, 120 and 600 s. If the set can not be reclosed, it will be blocked in a trip status until it is reset manually. Insulation monitoring mode: after the switch trip, REC2 repeats the previous sequence, but it measures the presence of leakage current in the installation before carrying out the reset. REC2 will only reclose when the insulation measurements are correct. There are LEDs on the front part of the control module to indicate the operation status: Manual or automatic reclosure Reclosure mode selected Reclosing status Lock status Protection Class Measurement Sensitivity I Dn Delay Test Reset Electromechanical, Class A Instantaneous value 30 ma or 300 ma (depending on the type) Fixed at 20 ms With built-in button Manual (front cover) Associated circuit breaker Built-in I n and no. of poles I n 40 A or 63 A, Poles 2 or 4 (depending on the type) Circuit breaker control Electromechanical relay Reclosure No. of reclosures 6 Time between reclosures 10, 20, 30, 60, 120, 600 s Partial counter reset time 600 s (reset time after 30 s) Reclosure cancellation With the front cover Nominal voltage 2 poles: 230 Vac 4 poles: 230 / 400 Vac Auxiliary power supply 230 Vac, Hz Operating temperature ºC Build features Fixing Weight Degree of protection IP 40 Standards IEC , IEC DIN rail 2 poles: 5 modules (90 x 90 mm) 4 poles: 7 modules (125 x 90 mm) 2 poles: 560 g / 4 poles: 693 g Drop-down window to activate/deactivate the automatic reclosure of the earth leakage switch. P2-47 P2-47 P.2

16 P.2 Self-reclosing overload and earth leakage protection Earth leakage protection and self-reclosing Self-reclosing earth leakage switch REC2 Self-reclosing earth leakage device REC2-2 poles REC2-4 poles References Class Poles I n (A) Sensitivity Type Code A ma REC2-2P P26411 A ma REC2-2P P26321 A ma REC2-2P P26414 A ma REC2-2P P26324 A ma REC2-4P P26412 A ma REC2-4P P26322 A ma REC2-4P P26415 A ma REC2-4P P26325 Connections REC2-2 poles REC2-4 poles L1 N L1 L2 L3 N N LI N N M L3 N Load Load PP P2-48

17 Self-reclosing overload and earth leakage protection P.2 Earth leakage protection and self-reclosing Earth leakage relay + contactor WRU RA Earth leakage relay with built-in transformer Description Self-reclosing electronic earth leakage protection relay with built-in transformer, a diameter of Ø 25 or Ø 35 mm (depending on the type), with earth leakage trigger It is connected to a contactor or similar element as a circuit breaker Type A relay, with high-frequency current filtering and high immunity. Monitoring in true root mean square (TRMS) Adjustable sensitivity and trigger timer. Number of reclosures and time between them, depending on the relay type Leakage level trigger indicator LED (% sensitivity): y1 flash every 2 s: between 25 and 50 % y1 flash every 1 s: between 50 and 75 % y1 flash every 0.5 s: between 75 and 90% ypermanent: Earth leakage protection trigger Adjustable to the DIN profile (EN ) Application Said relays are connected to a contactor or similar element to guarantee the level of self-reclosing earth leakage protection after a trigger. It is very easy to install, so that it is the adequate solution for installations that require the use of earth leakage protection systems as a result of their location or position in a determined site, which makes them hard to supervise or access: lighting panels, telephony installations, television repeaters, refrigeration chambers, etc. Protection Class Measurement Sensitivity Delay Earth leakage transformer Test and Reset Associated circuit breaker I n and no. of poles Circuit breaker control Reclosure No. of reclosures 6 Time between reclosures Partial counter reset time Relay signaling LED Remote signaling (outputs) Remote Control (inputs) A superimmunized True root mean square (TRMS) Adjustable from 30 ma... 3 A Adjustable from 20 ms... 1 s Built-in With built-in button Contactor Defined by the contactor used With switched relay 8, 16, 30, 59, 115, 224, s 15 min Presence of voltage Leakage current level Triggered relay Leakage control signal (mvac / ma) External test with button Auxiliary power supply 230 Vac (± 20 %) 50 / 60 Hz Output contacts 250 Vac, 6 A Operating temperature ºC Construction features Fixing DIN rail 4 modules (WRU-25 RA) / 6 modules (WRU-35 RA) Weight 236 g (WRU-25 RA) / 415 g (WRU-35 RA) Degree of protection IP 20 Terminals, IP 41 back panel Standards IEC , IEC 755, IEC P2-49 P2-49 P.2

18 P.2 Self-reclosing overload and earth leakage protection Earth leakage protection and self-reclosing Earth leakage relay + contactor WRU RA Earth leakage relay with built-in transformer WRU-25 RA / WRU-RM / WRU-RT / WRU-25-2R WRU-35 RA References Useful diameter Ø (mm) I n (A) Delay (s) (*) Number of reclosures Time between reclosures (s) Control of the circuit breaker Remote signaling (outputs) Type Code 25 0, , ,16, 30,59,115,224 Switched relay mv ac proportional to the leakage current WRU-25 RA P , , ,16, 30,59,115,224 Switched relay mv ac proportional to the leakage current WRU-35 RA P24221 Other earth leakage relays 25 0, , s, 40 s and the rest every 5 min Switched relay mv ac proportional to the leakage current WRU-RM P , , s, 40 s and the rest every 5 min Simple relay, NO, positive safety Alarm relay: 1 simple relay NO-SP WRU-RT P , , min, 4 min and the rest every 6 min Simple relay NO Alarm relay: 1 simple relay NO WRU-25-2R P24412 (*) The delay is cancelled in all relays with a sensitivity adjustment of 0.03 A. PP P2-50

19 Self-reclosing overload and earth leakage protection P.2 Earth leakage protection and self-reclosing Earth leakage relay + contactor WRU RA Earth leakage relay with built-in transformer Connections WRU-25 RA / WRU-RM External reset Leakage control External reset Undev coil LOAD WRU-35 RA WRU-RT / WRU-25-2R Leakage control External reset External reset External reset Undevoltage coil Undervoltage coil LOAD LOAD P2-51 P2-51 P.2

20 P.2 Self-reclosing overload and earth leakage protection Differential protection and reclosing Differential relay with integrated toroidal transformer + contactor WRU-10 RAL Differential relay with built-in transformer and display (type A) Description Electronic differential protection relay with automatic reclosing with built-in 28 mm transformer, constituting one unit. Superimmunized Type A, with high-frequency current filter and high insulation. Measurement in true root mean square (TRMS) value Display with leds and back-lit display: - Differential protection/reclosing settings - protection trigger current. - number of reclosures - protection status messages, etc. Unit with three output contact relays one switched and two simple relays, all programmable. The main relay provides the protection associated with the contactor, one is for the pre-alarm and the other for locking once the maximum number of reclosures is reached. There is a voltage input for external triggering and reclosing Fitting: DIN (EN-50022) profile Reduced three-module size. Connection by pluggable terminals Application The WRU-10 RAL relays combined with a CONTACTOR provide automatic reclosure following an event and provide a suitable solution for public lighting, automatic cash machines, cold rooms, traffic lights, etc. Its characteristics have been designed to provide maximum safety and continuity of the electrical service, avoiding untimely triggers. Protection Class Measurement PROGRAMMABLE sensitivity PROGRAMMABLE delay Test and Reset Associated circuit breaker Circuit breaker control Reclosure No. of reclosures Time between reclosures Reclosure time counter Relay signaling LED INDICATORS/BACK-LIT DISPLAY Remote Control A superimmunized True root mean square (TRMS) A, extendible to 30 A using SETUP Time setting: s, up to 10s using SETUP. Inverse curve: INStantaneous/ SELective. IEC By built-in buttons, T & R CONTACTOR, defines the number of poles and the I n Switched NO/NC contact relay Programmable Power supply Leakage trigger Pre-alarm Locking Protection settings Leakage current/trigger reading TEST and external status Sequences/reclosure number External TEST possible, triggering by voltage input Auxiliary power supply 230 Vac (± 30%) 50 / 60 Hz Output contacts 250 V ac, 5 A / 230 V ac, 250 ma Operating temperature ºC Construction features Fixing DIN rail 3 modules Weight 275 g Degree of protection IP 20, trans-cabinet IP 41 Standards IEC , IEC 60755, IEC 62020, IEC P P2-52

21 Self-reclosing overload and earth leakage protection P.2 Differential protection and reclosing Differential relay with integrated toroidal transformer + contactor WRU-10 RAL Differential relay with built-in transformer and display (type A) R eferences N reclosures Time between reclosures Net section (mm) I n (A) Delay Type Code Programmable Ǿ A extendible to 30 A s extendible to 10s Inverse curve: INS/SEL WRU-10 RAL P24453 Connections Programmable Reclosure P2-53 P2-53 P.2

22 P.2 Self-reclosing overload and earth leakage protection Earth leakage protection and self-reclosing Earth protection relay + contactor + external transformer RGU-10 RAL Earth protection Relay WG Series Description Electronic earth leakage protection relay, used to connect the external toroidal transformers of the WG / WGS Series Self-reclosing with a programmable earth leakage trip Superimmunized type A Relay, with high frequency current filtering and high immunity. Monitoring in true RMS The backlight display shows the following information: yadjustment values yinstantaneous leakage current It has two independent outputs: ytrip relay yend-of-reclosing-sequence interlocking relay External input for remote control functions (230 Vac) Automatic test of the connection and external transformer status Optional RS-485 Communications: type RGU-10C RAL Reduced dimensions: 3 modules Assembly on DIN rail (EN-50022). Optional assembly on 72 x 72 panel with accessory M5ZZF1. Application The RGU-10 RAL relays associated to a meter allow the automatic reclosing after a trigger, thus offering the most adequate solution for public lighting, cash machines, refrigeration chambers, traffic lights, etc. Its design characteristics guarantee maximum security and continuity of the electrical service, avoiding unwanted tripping. Protection Class Measurement Sensitivity Delay Earth leakage transformer Test and Reset Associated circuit breaker I n and no. of poles Circuit breaker control Reclosure No. of reclosures Time between reclosures Partial counter reset time Relay signaling LED Display Remote signaling (outputs) Remote Control (inputs) A superimmunized True root mean square (TRMS) Programmable from 30 ma A Programmable from 20 ms s Inverse curve: instantaneous or selective External, WG Series (WG / WGS) With built-in button Contactor Defined by the contactor used With a switched relay Programmable: Depending on the reclosing sequence Programmable: s Programmable Presence of voltage Leakage trip Interlocking / reclosing status Backlit LCD Lock status indicator relay ON / OFF Auxiliary power supply 230 Vac (± 20 %) 50 / 60 Hz Output contacts 250 Vac, 6 A Operating temperature ºC Construction features Fixing DIN rail 3 modules Weight 236 g Degree of protection IP 20 Terminals, IP 41 back panel Standards IEC , IEC 755, IEC PP P2-54

23 Self-reclosing overload and earth leakage protection P.2 Earth leakage protection and self-reclosing Earth protection relay + contactor + external transformer RGU-10 RAL Earth protection Relay WG Series References Reclosing element Communications I n (A) Delay (s) Type Code Contactor - 0, , RGU-10 RAL P24622 Contactor RS-485 0, , RGU-10 C RAL P24662 Connections P2-55 P2-55 P.2

24 P.2 Self-reclosing overload and earth leakage protection Earth leakage protection and self-reclosing Earth leakage station + contactor + external transformer CBS-4 RA / RAL Earth leakage relay station WG Series Description Unit equivalent to 4 earth leakage protection relays. 4 independent programmable relays available 4 inputs to connect the external toroidal transformers of the WG /WGS Self-reclosing with programmable earth leakage trip in each channel Superimmunized Type A relay with high frequency current filtering and high immunity. Monitoring in true root mean square (TRMS) Reduced size: 3 modules 5 independent programmable outputs: y4 earth leakage trip outputs y1 end-of-reclosing-sequence interlocking output Backlight display to show the information of the 4 channels: yadjustment values yinstantaneous leakage current Trip/external reset input Automatic test of the connection and status of each external transformer Optional RS-485 Communications: type CBS-4C RA and CBS-4C RAL Assembly on DIN rail (EN-50022) Optional assembly on 72 x 72 panel with accessory M5ZZF1. Protection Class Measurement Sensitivity I Dn Delay Earth leakage transformer Test and Reset Associated circuit breaker I n and no. of poles Reclosure No. of reclosures Time between reclosures Partial counter reset time A superimmunized True root mean square (TRMS) 0.03 A A Programmable: 0.20 ms s Inverse curve: instantaneous or selective External, WG Series (WG / WGS) With built-in button Contactor Defined by the contactor used Programmable Programmable Programmable Auxiliary power supply 230 Vac (± 20 %) Hz Contacts with 4 earth leakage outputs 250 Vac, 5 A Operating temperature ºC Construction features Fixing DIN rail 3 modules Weight 236 g Degree of protection IP 20 Terminals, IP 41 back panel Standards IEC , IEC 755, IEC Application CBS-4 RA or CBS-4 RAL allow an intelligent earth leakage protection, with greatly reduced dimensions. A contactor is available per channel, enabling the automatic reclosure after a trip, thus offering the most adequate solution for public lighting, cash machines, refrigeration chambers, traffic lights, etc. In addition, version CBS-4 C, with RS-485 communications, is used with the PowerStudio software and it adds the centralised supervision in real-time, as well as a record log that can be analysed later on. P P2-56

25 Self-reclosing overload and earth leakage protection P.2 Earth leakage protection and self-reclosing Earth leakage station + contactor + external transformer CBS-4 RA / RAL Earth leakage relay unit WG Series References Size Communications No. of Relays No. of reclosures Type Code 3 modules - 4 / NO Programmable CBS-4 RA P modules RS / NO Programmable CBS-4 C RA P modules - 4 / NC Programmable CBS-4 RAL P24A11 3 modules RS / NC Programmable CBS-4 C RAL P24A12 Connections P2-57 P2-57 P.2

26 P.2 Self-reclosing overload and earth leakage protection Earth leakage protection and self-reclosing Earth leakage station + contactor + external transformer CBS-8 Earth leakage monitoring and signaling unit of the external transformer of the WG / WGP Series Description Unit equivalent to 8 earth leakage protection networks. 8 independent programmable relays available 8 inputs to connect the external toroidal transformers of the WG Superimmunized Type A relay with high frequency current filtering and high immunity. Monitoring in true root mean square (TRMS) Reduced size, with 8 modules 9 independent programmable outputs (8 earth leakage trip relays and 1 pre-alarm trip). Application The CBS-8 earth leakage station associated to the transformers of the WG / WGP Series allows an intelligent earth leakage protection. Its design features guarantee maximum security and continuity of the electrical service, avoiding unwanted tripping. Showing the value of the leak instantaneously on the display with the pre-alarm indications provides the information about the state of lines being protected, thus allowing the implementation of an adequate preventive maintenance approach. In addition, RS-485 communications are used with the PowerStudio software, which allows the centralised supervision of the system in real time, with a record log that can be analysed later on. Protection No. of protections 8 Class A superimmunized Measurement True root mean square (TRMS) Sensitivity 0.03 A A external transformers WG/WGS 0.03 A A external transformers WGP/WGSP Delay Time defined: 0, s Inverse curve: instantaneous or selective Earth leakage transformer Test and Reset Associated circuit breaker External, TRANSFORMERS WG/WGP With built-in buttons, T & R Contactor or circuit breaker + trigger coil Automatic reclosing No. of reclosures 0 Programming option Time between reclosures 0 Programming option s Partial counter reset time Double the reclosing time Power supply voltage Leakage trip LED indicator Pre-alarm Interlocked earth leakage reclosing Automatic reclosure enabled Instantaneous leak level indicator in each channel Display View Parameter programming Reclosure status Auxiliary power supply 230 Vac (± 20 %) Hz Output contacts 250 Vac, 5 A Operating temperature ºC Construction features Fixing DIN Rail (EN 50022) 8 modules Weight 609 g Degree of protection IP 20 Terminals, IP 41 back panel Standards IEC 664, VDE 0110, IEC 801, UL 94, IEC 348, IEC 571-1, EN , , PP P2-58

27 Self-reclosing overload and earth leakage protection P.2 Earth leakage protection and self-reclosing Earth leakage station + contactor + external transformer CBS-8 Earth leakage monitoring and signaling unit of the external transformer of the WG Series References Size Communications No. of Relays I n (A) Type Code 8 modules RS , CBS-8 (*) P12811 (*) In the case of the A scale, use earth leakage transformers of the WGP / WGSP (*) In the case of the A scale, use earth leakage transformers of the WG / WGS Connections P2-59 P2-59 P.2

28 P.2 Self-reclosing overload and earth leakage protection Overcurrent and earth leakage protection and self-reclosing Earth leakage relay + MCB circuit-breaker WRKRT-25 Earth leakage relay with built-in transformer Description Self-reclosing earth leakage protection relay with a built-in transformer, with a diameter of Ø 25 mm, with automatic reclosure in case of a trip. Its operation is always associated to an MCB circuit-breaker. Therefore, other models can not be used The WRKRT-25 relay is used with the MCB to guarantee the self-reclosing earth leakage and overload protection, with an automatic reclosure after an earth leakage trip Type A relay with high frequency current filtering and high immunity. Monitoring in true root mean square (TRMS) Adjustable sensitivity and timer. Application The WRKRT-25 Relays connected to an MCB circuit-breaker guarantee self-reclosing earth leakage and overload protection, with an automatic reclosure after an earth leakage trip. It is a very good solution in installations in special locations that are hard to monitor and guard: telephony installations, television repeaters, refrigeration chambers, etc. Protection Class Measurement Sensitivity Delay Earth leakage transformer Test and Reset Associated circuit breaker I n, No. of poles, thermal curve and cut-out power Reclosure A superimmunized True root mean square (TRMS) Programmable from 30 ma... 3 A Programmable from 20 ms... 1 s Incorporated, Ø 25 mm With built-in button Circuit-breaker MCB-T (WRKRT-25 T) and MCB-P (WRKRT-25 N) Defined by the circuit-breaker used, up to 63 A No. of reclosures 30 (WRKRT-25 T) and 6 (WRKRT-25 N) Time between reclosures Partial counter reset time Relay signaling LED Control input (R1-R2) 20 s, 40 s, the remaining 28 every 5 min 15 min Voltage presence indicator Interlocked reclosure Indicates the presence of leakage current that does not reach the trip point WRKRT-25 T: External reset WRKRT-25 N: Connection/disconnection order of the associated MCB-P Auxiliary power supply 230 Vac (± 20 %) 50 / 60 Hz Breaking element control contacts Maximum current 3 Aac Operating temperature ºC Construction features Fixing DIN rail 4 modules Weight 235 g Degree of protection IP 20 Terminals, IP 41 Embedded relay Standards IEC , IEC 755, IEC 255-5, IEC PP P2-60

29 Self-reclosing overload and earth leakage protection P.2 Overcurrent and earth leakage protection and self-reclosing Earth leakage relay + MCB circuit-breaker WRKRT-25 Earth leakage relay with built-in transformer WRKRT-25 T / WRKRT-25 N References No. of rec. Time between reclosures I n (A) Delay (s) (* 1 ) Associated circuit breaker Type Code 30 20s, 40 s and the rest every 5 min 0, , Circuit-breaker MCB-T WRKRT-25 T P /1/2/4/8/16 min 0, , Circuit-breaker MCB-P WRKRT-25 N (* 2 ) P23121 Up to 63 A and 2 and 3+N poles (* 1 ) The delay is cancelled in all relays with a sensitivity adjustment of 0.03 A. (* 2 ) Only valid for overload relays of the MCB-P Series. External contactor input. Connections WRKRT-25 T WRKRT-25 N External reset Leakage control CONTROL INPUT LOAD Auxiliary contacts (white) Common (brown) Circuit breaker statu (green) Earth leakage status LOAD P2-61 P2-61 P.2

30 P.2 Self-reclosing overload and earth leakage protection Overcurrent and earth leakage protection and self-reclosing MCB MCB Series Circuit-Breaker Description MCB-P or MCB-T are circuit-breakers that combine the functions of a circuit breaker (overload and short-circuit protection) and those of a contactor on the same element. There are two options with MCB: Closed circuit-breaker: Allows remote control functions (contactor function). It can be disconnected and reconnected electrically with the adequate signal. Circuit-breaker opened by an overload or short-circuit trip or by manual disconnection: remote control reset is not allowed, only manually. The remote control function works on the same contacts as those of the circuit breaker, guaranteeing the disconnection in each case. The MCB-T type includes a remote control module with two auxiliary, potential free (three-wire) contacts that indicate the status of the MCB at the input of the remote control (contactor function) and/or the circuit breaker. Circuit-breaker Gauges I n (A) Nominal cut-out power (EN 60898) A: 10 ka Nominal cut-out power (EN ) A: 20 ka A: 15 ka Typical curve Nominal working voltage Work frequency range C or D, depending on the type 230 / 400 Vac Hz Operating temperature ºC Storage temperature ºC Remote Control Nominal voltage Activation impulse Deactivation impulse Construction features Fixing Mechanical working life Weight 230 Vac 20 ms 20 ms DIN rail 2 poles: 3 modules 4 poles: 5 modules 20,000 operations 2 poles: 375 g 4 poles: 615 g Degree of protection IP 20 (DIN 40050) Standards IEC 60898, EN 60947, EN 60898, IEC Application MCB are the perfect elements to guarantee self-reclosing earth leakage and overload protection applications, connected to WRKRT-25 relays. PP P2-62

31 Self-reclosing overload and earth leakage protection P.2 Overcurrent and earth leakage protection and self-reclosing MCB MCB Series Circuit-Breaker MCB-P / MCB-T References 2 poles 4 poles MCB-P MCB-T MCB-P MCB-T I n (A) Type Code Type Code Type Code Type Code 6 MCB-P C-2p-6A P20210 MCB-T C-2p-6A P MCB-P C-2p-10A P20211 MCB-T C-2p-10A P20311 MCB-P C-4p-10A P20221 MCB-T C-4p-10A P MCB-P C-2p-16A P20213 MCB-T C-2p-16A P20313 MCB-P C-4p-16A P20223 MCB-T C-4p-16A P MCB-P C-2p-20A P20214 MCB-T C-2p-20A P20314 MCB-P C-4p-20A P20224 MCB-T C-4p-20A P MCB-P C-2p-25A P20215 MCB-T C-2p-25A P20315 MCB-P C-4p-25A P20225 MCB-T C-4p-25A P MCB-P C-2p-32A P20216 MCB-T C-2p-32A P20316 MCB-P C-4p-32A P20226 MCB-T C-4p-32A P MCB-P C-2p-40A P20217 MCB-T C-2p-40A P20317 MCB-P C-4p-40A P20227 MCB-T C-4p-40A P MCB-P C-2p-50A P20218 MCB-T C-2p-50A P20318 MCB-P C-4p-50A P20228 MCB-T C-4p-50A P MCB-P C-2p-63A P20219 MCB-T C-2p-63A P20319 MCB-P C-4p-63A P20229 MCB-T C-4p-63A P20329 Connections N RELAY K SERIE ON OFF 1 2 MCB control mod 230 V ac LOAD L 3 P2-63 P2-63 P.2

32 P.2 Self-reclosing overload and earth leakage protection Overcurrent and earth leakage protection and self-reclosing Earth leakage relay + circuit breaker WRU-25 RA-MT Earth leakage relay with built-in transformer Description Self-reclosing earth leakage protection relay with a built-in transformer, with a diameter of Ø 25 mm, with automatic reclosure in case of a trip. It is connected to a motorized circuit breaker of the MT or similar series as the overload protection or circuit breaker element. Self-reclosing system after an overload and/or earth leakage trip. Type A relay, with high current filtering and high immunity. Monitoring in true root mean square (TRMS). The functions of the WRU-25 RA-MT are: yearth leakage protection and self-reclosing yoverload reclosing Leakage level trigger indicator LED (% sensitivity): y1 flash every 2 s: between 25 and 50 % y1 flash every 1 s: between 50 and 75 % y1 flash every 0.5 s: >75 and <90% ypermanent: Earth leakage protection trigger Application The WRU-25 RA-MT relays connected to an MT or similar circuit breaker guarantee the self-reclosing earth leakage and overload protection of a system after a trip, with both earth leakage and overload protection systems. It is a very good solution in installations in special locations that are hard to monitor and guard: telephony installations, television repeaters, refrigeration chambers, etc. Protection Class Measurement Sensitivity Delay Earth leakage transformer Test and Reset Associated circuit breaker I n and no. of poles Circuit breaker control Reclosure No. of reclosures 6 Time between reclosures Partial counter reset time Safety interlocking Relay signaling LED Remote signaling (outputs) Earth leakage and circuit breaker A superimmunized True root mean square (TRMS) Programmable from 30 ma... 3 A Programmable from 20 ms... 1 s Built-in Ø 25 mm With built-in button Motorized circuit-breaker MT Defined by the circuit breaker used With a switched relay Earth leakage and circuit breaker 1 min 15 min In the earth leakage protection device. With disconnection lever Voltage presence indicator Earth and/or short-circuit overload fault indicator Leakage control signal (proportional alternating voltage) Auxiliary power supply 230 Vac (± 20 %) 50 / 60 Hz Circuit breaker control contacts 250 Vac, 8 Aac Output contacts Maximum current 3 A Operating temperature ºC Construction features Fixing DIN rail 4 modules Weight 234 g Degree of protection IP 20 Terminals, IP 41 back panel Standards IEC , IEC 755, IEC PP P2-64

33 Un 230VAC T E S T R E E T type WRU25 POWER Un 230VAC T E S T R E E T type WRU25 POWER Self-reclosing overload and earth leakage protection P.2 Overcurrent and earth leakage protection and self-reclosing Earth leakage relay + circuit breaker WRU-25 RA-MT Earth leakage relay with built-in transformer References No. of reclosures Useful diameter Ø (mm) I n (A) Delay (s) (*) Time between reclosures Associated circuit breaker Type Code , , min Switch MT WRU-25 RA-MT P24241 (*) The delay is cancelled in all relays with a sensitivity adjustment of 0.03 A. Connections WRU-25 RA-MT (self-reclosing earth leakage and overload protection) L3 L2 L1 N WRU-25 RA-MT (self-reclosing, only earth leakage) RED L3 L2 L1 N N N L MT L M On I H Off 0 MT M On I Off A1/Y2 A1 Y A1/Y2 A1 Y T T R S R S Z1 Z2 15 A2 Z1 Z2 15 A2 MV MV LOAD LOAD P2-65 P2-65 P.2

34 P.2 Self-reclosing overload and earth leakage protection Overcurrent and earth leakage protection and self-reclosing Earth leakage relay + circuit breaker WRT-6 Earth leakage relay with built-in transformer Description Self-reclosing protection relay with a builtin transformer, with a diameter of Ø 25 mm, with automatic reclosure in case of a trip. It is connected to a motorized circuit breaker of the MT or similar series, acting as the earth leakage protection element or circuit breaker Self-reclosing earth leakage and/or overload trigger Type A relay, with high frequency current filtering and high immunity. Monitoring in true root mean square (TRMS) The WRT-6 has the following functions: yearth leakage protection and self-reclosing yoverload reclosing Visualisation of the following on the LED display: yinstantaneous leakage current value ytotal reclosing no. meter One output (potential free) to indicate the reclosing interlocking. Application The WRT-6 relays connected to an MT or similar circuit breaker guarantee the self-reclosing earth leakage and overload protection of a system after a trip, with both earth leakage and overload protection systems. It is a very good solution in installations in special locations that are hard to monitor and guard: telephony installations, television repeaters, refrigeration chambers, etc. Protection Class Measurement Sensitivity Delay Earth leakage transformer Test and Reset Associated circuit breaker I n and no. of poles Circuit breaker control Reclosure No. of reclosures Time between reclosures Partial counter reset time Safety interlocking Earth leakage and circuit breaker A superimmunized True root mean square (TRMS) Fixed 30 ma or 300 ma (depending on the type) Fixed 20 ms Built-in Ø 25 mm With built-in button Motorized circuit-breaker MT Defined by the circuit breaker used With ON / OFF Relay Earth leakage and circuit breaker 2 circuit breaker and 10 earth leakage 1 min 30 min In the earth leakage protection device. With disconnection lever Auxiliary power supply 230 Vac (± 20 %) 50 / 60 Hz Circuit breaker control contacts 250 Vac, 8 Aac Output contacts 250 Vac, 8 Aac Operating temperature ºC Construction features Fixing DIN rail 6 modules Weight 425 g Degree of protection IP 20 Terminals, IP 41 Embedded relay Standards IEC , IEC 755, IEC PP P2-66

35 Self-reclosing overload and earth leakage protection P.2 Overcurrent and earth leakage protection and self-reclosing Earth leakage relay + circuit breaker WRT-6 Earth leakage relay with built-in transformer References No. of reclosures Useful diameter Ø (mm) I n (A) Delay (s) (*) Poles Control of the circuit breaker Type Code 2 circuit breaker 10 earth leakage 25 0,03 0,02 in accordance with MT ON / OFF Relay WRT P circuit breaker 10 earth leakage 25 0,3 0,02 in accordance with MT ON / OFF Relay WRT P21122 (*) The delay is cancelled in all relays with a sensitivity adjustment of 0.03 A. Connections LOAD SEAL SIGNAL P2-67 P2-67 P.2

36 P.2 Self-reclosing overload and earth leakage protection Overcurrent and earth leakage protection and self-reclosing Earth leakage relay + circuit breaker + transformer RGU-10 MT Earth leakage Relay WG + MT Series Description Self-reclosing, electronic earth leakage protection relay Associated to an external toroidal transformer of the WG/WGS Series. It is connected to a motorized circuit breaker of the MT or similar series as the circuit breaker The self-reclosing earth leakage and/or overload trip is programmable Superimmunized Type A relay with high frequency current filtering and high immunity. Monitoring in true root mean square Backlight display Two independent outputs: trigger/reset relay and end-of-reclosing-sequence interlocking relay External input for remote control functions Automatic test of the connection and status of the external transformer with an inductive test Application The RGU-10 MT relays associated to the transformers of the WG Series allow an intelligent earth leakage protection. These are used jointly with an MT or similar circuit breaker to enable the self-reclosure after a trip (overload and earth leakage reclosing), offering a very good solution for public lighting, cash machines, refrigeration chambers, etc. Their design characteristics guarantee maximum security and continuity of the electrical service, avoiding unwanted tripping. Protection Class Measurement Sensitivity Delay Earth leakage transformer Test and Reset Associated circuit breaker I n and no. of poles Circuit breaker control Reclosure No. of reclosures Time between reclosures Partial counter reset time Relay signaling LED Display Remote signaling (outputs) Remote Control (inputs) Earth leakage and Circuit breaker A superimmunized True root mean square (TRMS) Programmable from 30 ma A Programmable from 20 ms s Inverse curve: instantaneous or selective External, WG With built-in button Motorized circuit breaker MT Series, MT-FDE Defined by the circuit breaker used Simple relay ON / OFF Earth leakage and Circuit breaker Programmable Programmable Programmable Presence of voltage Leak trip Reclosing activation Interlocking status LCD Lock status indicator relay ON / OFF Auxiliary power supply 230 Vac (± 20 %) 50 / 60 Hz Output contacts Current 5 Aac Operating temperature ºC Construction features Fixing DIN rail 3 modules Weight 236 g Degree of protection IP 20 Terminals, IP 41 back panel Standards IEC , IEC 755, IEC PP P2-68

37 ON / OFF externo External ON/OFF ON / OFF externo External ON/OFF Self-reclosing overload and earth leakage protection P.2 Overcurrent and earth leakage protection and self-reclosing Earth leakage relay + circuit breaker + transformer RGU-10 MT Earth leakage Relay WG + MT Series References Reclosing element Communications I n (A) Delay (s) (*) Type Code Circuit-breaker - 0, , RGU-10 MT P24642 Circuit-breaker RS-485 0, , RGU-10 C MT P24652 (*) The delay is cancelled in all relays with a sensitivity adjustment of 0.03 A. Connections RGU-10 MT / RGU-10C MT RGU-10 MT with coil / RGU-10C MT with coil L1 L2 L3 N SUPPLY A.C. 230 V L1 L2 L3 N SUPPLY A.C. 230 V 4 15 MT - C- 62/64 MT N L 11 M O I MT - C- 62/64 MT C1 U> N M C2 O I 12 L WG Type WG 1S11S2 1S2 1S1 Reset RGU-10 MT Test WG Type WG 1S11S2 1S2 1S1 Reset RGU-10 MT Test Disparo por MOTOR OFF Trip by OFF MOTOR. Disparo por BOBINA Trip by TRIP COIL CARGA LOAD SETTING SETUP TRIP: CARGA LOAD SETTING SETUP TRIP: SEC.T: St (in case of shunt coil) Pt (in case of undervoltage coil) SETTIN TRIP: P2-69 P2-69 P.2

38 P.2 Self-reclosing overload and earth leakage protection Overcurrent and earth leakage protection and self-reclosing Earth leakage relay + circuit breaker + transformer RGMT Earth leakage Relay WG + MT Series Description Self-reclosing electronic earth leakage protection relay, associated to an external toroidal transformer of the WG/WGS It is connected to a motorized circuit breaker of the MT or similar series as the overload protection or circuit breaker element. Type A relay with high frequency current filtering and high immunity. Monitoring in true root mean square (TRMS). The RGMT has the following functions: yearth leakage protection and self-reclosing yoverload reclosing. Display of: yrelay status ytotal reclosure no. meter Two remote control inputs: yremote trip/reset of the group yactivate/deactivate the overload reclosure process. Application The RGMT relays associated to WG, transformers, connected to an MT or similar circuit breaker guarantee the self-reclosing earth leakage and overload protection of a system after a trip, with both earth leakage and overload protection systems. It is the ideal solution for telephony installations, television repeaters, etc. Protection Class Measurement Sensitivity Delay Earth leakage transformer Test and Reset Associated circuit breaker I n, No. of poles, thermal curve and cut-out power Reclosure No. of reclosures Time between reclosures Partial counter reset time Safety interlocking Earth leakage and circuit breaker A superimmunized True root mean square (TRMS) 0.03 / 3 A Fixed 20 ms External, WG With built-in button Motorized circuit-breaker MT Defined by the circuit breaker used Earth leakage and circuit breaker 2 circuit breaker and 10 earth leakage 3 min 30 min In the circuit breaker. With disconnection lever Auxiliary power supply 230 Vac (± 20 %) 50 / 60 Hz Circuit breaker control contacts 250 Vac, 8 A Output contacts 250 Vac, 8 A Operating temperature ºC Construction features Fixing DIN rail 6 modules Weight 350 g Degree of protection Terminals: IP 20 Embedded: IP 41 Standards IEC , IEC 755, IEC 255-5, IEC 947-2, IEC P P2-70

39 Self-reclosing overload and earth leakage protection P.2 Overcurrent and earth leakage protection and self-reclosing Earth leakage relay + circuit breaker + transformer RGMT Earth leakage Relay WG + MT Series References Useful diameter Ø mm Poles I n (A) No. of reclosures Control of the circuit breaker Delay (s) (*) Type Code In accordance with WG In accordance with MT 0,03 / 3 circuit breaker: 2 earth leakage: 10 Relay ON / OFF 02 RGMT P21130 (*) The delay is cancelled in all relays with a sensitivity adjustment of 0.03 A. Connections P2-71 P2-71 P.2

40 P.2 Self-reclosing overload and earth leakage protection Overcurrent and earth leakage protection and self-reclosing MT Motorized circuit breaker (up to 63 A) Description The motorized circuit breakers of the MT Series can be associated remotely. They protect against short-circuits and overloads, but are also used as a circuit breaker. Includes auxiliary contacts to indicate the status of the circuit breaker. The switch can be connected again after a manual or circuit breaker disconnection with an electric order following the "DISCONNEC- TION (0) - CONNECTION (1)" sequence. Application The MT Series is composed of motorized circuit breakers that can be activated remotely and can be used in any application that uses a connection/disconnection remote control. They are also used as the circuit breakers associated to the self-reclosing relays. Circuit-breaker Gauges I n (A) Nominal cut-out power (IEC 947-2) 6 ka, in accordance with EN ka, in accordance with EN Typical curve C or D, depending on the type Nominal working voltage 240 / 415 Vac Work frequency range Hz Operating temperature ºC Storage temperature ºC Motor Nominal voltage 230 Vac, ± 10 % Opening impulse > 50 ms Closing impulse > 50 ms Construction features Fixing DIN rail 2 poles: 5.5 modules 4 poles: 7.5 modules Mechanical working life Weight > 20,000 operations 2 poles: 645 g 4 poles: 890 g Degree of protection IP 40 (DIN 40050) Standards IEC 947-2, IEC They are a vital accessory in the self-reclosing overload and earth leakage protection process. P P2-72

41 Self-reclosing overload and earth leakage protection P.2 Overcurrent and earth leakage protection and self-reclosing MT Motorized circuit breaker (up to 63 A) 2 poles 4 poles References 2 poles 4 poles C Curve D Curve C Curve D Curve I n (A) Type Code Type Code Type Code Type Code 6 MT-C-E62-6A P20110 MT-D-E62-6A P20130 MT-C-E64-6A P20120 MT-D-E64-6A P MT-C-E62-10A P20111 MT-D-E62-10A P20131 MT-C-E64-10A P20121 MT-D-E64-10A P MT-C-E62-16A P20112 MT-D-E62-16A P20132 MT-C-E64-16A P20122 MT-D-E64-16A P MT-C-E62-20A P20113 MT-D-E62-20A P20133 MT-C-E64-20A P20123 MT-D-E64-20A P MT-C-E62-25A P20114 MT-D-E62-25A P20134 MT-C-E64-25A P20124 MT-D-E64-25A P MT-C-E62-32A P20115 MT-D-E62-32A P20135 MT-C-E64-32A P20125 MT-D-E64-32A P MT-C-E62-40A P20116 MT-D-E62-40A P20136 MT-C-E64-40A P20126 MT-D-E64-40A P MT-C-E62-50A P20117 MT-D-E62-50A P20137 MT-C-E64-50A P20127 MT-D-E64-50A P MT-C-E62-63A P20118 MT-D-E62-63A P20138 MT-C-E64-63A P20128 MT-D-E64-63A P20148 Accessory - Trip coil F6 P29101 Connections N L N L External disconnection signal H H M 0 I External connection signal N L LOAD P2-73 P2-73 P.2

42 P.2 Self-reclosing overload and earth leakage protection Overcurrent and earth leakage protection and self-reclosing MT-FDE Motorized circuit-breaker (from 63 A) Description Automatic switch with remote control of the MT-FDE Series, for currents of 80 to 250 A, 3 and 4 poles. Responsible for the protection against shortcircuits and overloads, but also used as a circuit breaker. The switch can be reclosed with two methods, depending on the adjustment of the motor group in the operations mode: MANU : executed manually with the same switch, following the OFF and ON sequence. AUTO : carried out with an electrical impulse, following the OFF and ON sequence. Application The MT-FDE Series is composed of motorized circuit breakers that can be activated remotely and can be used in any application that uses a connection/disconnection remote control. Circuit-breaker Gauges I n (A) No. of poles Nominal cut-out power (IEC 947-2) Typical curve Nominal working voltage Work frequency range MT-FDE: MT-FEE: or 4, depending on the type MT-FDE: 25 ka, in accordance with IEC MT-FEE: 36 ka C or D, depending on the type 240 / 415 Vac Hz Operating temperature ºC Storage temperature ºC Motor Nominal voltage Minimum voltage Activation impulse Deactivation impulse Construction features Fixing Weight 230 Vac 210 Vac 50 ms 50 ms Panel (base + plug-in socket) 3 poles: 81 x 130 x 185 mm 4 poles: 108 x 130 x 185 mm Depending on the type Degree of protection IP 40 (DIN 40050) Standards IEC They are also used as circuit breakers associated to the self-reclosing relays, for example, RGU-10 MT orrrm. They are a vital accessory in the self-reclosing overload and earth leakage protection process. P P2-74

43 Self-reclosing overload and earth leakage protection P.2 Overcurrent and earth leakage protection and self-reclosing MT-FDE Motorized circuit-breaker (from 63 A) 3 poles 4 poles References 3 poles 4 poles Type Weight (kg) Code Type Weight (kg) Code 80 MT-FDE-80A 2,9 P20D60 MT-FDE-80A 3,4 P20D MT-FDE-100A 2,9 P20D61 MT-FDE-100A 3,4 P20D MT-FDE-125A 2,9 P20D62 MT-FDE-125A 3,4 P20D MT-FDE-160A 2,9 P20D63 MT-FDE-160A 3,4 P20D MT-FEE-250A 3,8 P20D64 MT-FEE-250A 4,6 P20D74 Connections N L1 L2 L3 F On A2 Off A4 N N EC ED On MANUAL Off A1 FDE N L1 L2 L3 LOAD P2-75 P2-75 P.2

44 P.2 Self-reclosing overload and earth leakage protection Overcurrent and earth leakage protection and self-reclosing WRGMT Complete overload and earth leakage protection and reclosure equipment Description The WRGMT group acts as an overload (overload + short-circuit) and earth leakage protection system with earth leakage and overload reclosure. WRGMT, 2 poles WRGMT, 4 poles The nominal current of the overload protection is determined by the type of MT (up to 63 A) or MT-FDE used. The group is composed of the following elements: RGMT relay (earth leakage protection) Motorized automatic switch of the MT- FDE Series or motorized circuit breaker of the MT Series, with overload protection and circuit breaker functions Earth leakage transformer, WG Application The WRGMT groups can be used to make safety compatible with the continuity of the service in remote installations or installations that do not have the usual maintenance staff. They guarantee the overload and earth leakage protection with a self-reclosing system after a trigger, both in the case of an earth leakage and overload trip. It is a very good solution in installations in special locations that are hard to monitor and guard: telephony installations, television repeaters, refrigeration chambers, etc. References 2 poles 4 poles I Dn (A) Type Code Type Code 6 WRGMT-C-2-6 A P WRGMT-C-2-10 A P21211 WRGMT-C-4-10 A P WRGMT-C-2-16 A P21212 WRGMT-C-4-16 A P WRGMT-C-2-20 A P21213 WRGMT-C-4-20 A P WRGMT-C-2-25 A P21214 WRGMT-C-4-25 A P WRGMT-C-2-32 A P21215 WRGMT-C-4-32 A P WRGMT-C-2-40 A P21216 WRGMT-C-4-40 A P WRGMT-C-2-50 A P21217 WRGMT-C-4-50 A P WRGMT-C-2-63 A P21218 WRGMT-C-4-63 A P21228 Other currents, on demand P P2-76

45 Self-reclosing overload and earth leakage protection P.2 Overload reclosure and protection Overload + reclosing relay RRM Overload reclosing relay Description Self-reclosing electronic relay of motorized circuit breakers. The relays of the RRM series can be used to control, send remote signals and for the remote control of the associated motorized circuit breaker (MT or MT-FDE Series). The RRM relay has the following functions: Motorized circuit breaker control: yautomatic reclosing yremote connection/disconnection (nonreclosing) Signalling: ylocal, with LEDs yremote signalling with relay of the reclosing lock (in RRM-P) yrs-485 Communications (in RRM-C) Remote control of the automatic switch The complete reclosing group is composed of the following elements: Motorized circuit breaker of the MT or MT- FDE Series (2 or 4 poles) Control relay RRM. Application The RRM relays can be used in all applications that require a self-reclosing motorized circuit breaker after a trigger or with the use of remote control systems. It has been specially designed to work with the circuit breakers of the MT or MT-FDE Series. Protection Associated circuit breaker I n, No. of poles, thermal curve and cut-out power Circuit breaker control Reclosure No. of reclosures Time between reclosures Partial counter reset time Safety interlocking Relay signaling LED Remote signaling (outputs) Remote Control (inputs) Circuit breaker Motorized circuit breaker MT or MT-FDE Defined by the circuit breaker used Motor control contactor Circuit breaker Programmable: 0, 1, 2, 4, 6, 8 times Programmable: 0.5, 1, 2, 3, 4, 5 min 30 min In the circuit breaker. With disconnection lever Presence of voltage and no circuit breaker trigger Trigger set off by external order Interlocking after the end of reclosures Reclosing RRM-P: Interlocking relay RRM-C: RS-485 Communications ON/OFF Potential free input of the circuit breaker (non-reclosing external OFF) Auxiliary power supply 230 Vac (± 20 %) 50 / 60 Hz Output contacts 250 Vac, 1 A Operating temperature ºC Construction features Fixing DIN rail 1 modules Weight 88 g Degree of protection IP 20 Terminals, IP 41 back panel Standards IEC P2-77 P2-77 P.2

46 P.2 Self-reclosing overload and earth leakage protection Overload reclosing Overload + reclosing relay RRM Overload reclosing relay References Reclosing element Communications Number of reclosures Time between reclosures Type Code Circuit-breaker - 0, 1, 2, 4, 6, 8 0.5, 1, 2, 3, 4, 5 min RRM-P P25130 Circuit-breaker RS-485 0, 1, 2, 4, 6, 8 0.5, 1, 2, 3, 4, 5 min RRM-C P25131 Connections RRM-P RRM-C SE RE LOAD EXTER TRIP LOAD EXTER TRIP P P2-78

47 Self-reclosing overload and earth leakage protection P.2 Relation between products and accessories Adaptor panel Contactor MCB MT MT-FDE WG / WGS Adaptor for 72 x 72 panel Contactor Circuit breaker Motorized circuit breaker Motorized circuit breaker Earth leakage transformers M5ZZF1 -- See page 56 See page 66 See page 68 See P.1 REC REC WRU RA RGU-10 RAL CBS-4 RA CBS WRKRT WRU-25 RA-MT WRT RGU-10 MT RGMT WRGMT RRM P2-79 P2-79 P.2