TCS
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Catalog excerpts

TCS - 1

RELAY FOR PERMANENT CONTROL OF THE MCCB’S TRIPPING CIRCUIT TCS1 circuits 24-48Vac/dc / esec. DIN rail 3 modules TCS3 circuits 24-48Vac/dc / esec. flush mounting DIN 96x96mm TCS2 circuits 110-230-400Vac/dc / esec. DIN rail 3 modules TCS4 circuits 110-230-400Vac/dc / esec. flush mounting DIN 96x96mm The TCS is devoted to control the MCCB’s disconnection circuits (trip) or the safety circuits. In fact, whenever there is an interruption in a circuit (Output relay of any given protection MCCB’s shunt trip coil and the connection between the relay and the coil), and it is required that the MCCB trips due to any anomaly in the line, such MCCB will be unable to trip. Provided that the system has been installed with other protections, some other Ciruit Breaker will trip and the result will be the loss of service of other sections of the system, which might be most important. Should the MCCB be the sole protection, the use of the TCS is most important, because the working guarantee of the tripping circuit becomes critical, in this particular case. An important application is with the safety or emergency circuits, according with the CEI 64-8/537.4.3 Standard, when using shunt trip coils for emergency reactions , as the starting of a fire fighting system, por example. The relay has an auxiliary supply electrically separated from the Control Voltage. In normal conditions, with auxiliary supply to the TCS relay, the OK green LED will glow. If there is any anomaly on the disconnection or safety circuit, the “ALARM” red LED will glow and the OK green LED will be switched off.The double changeover end relay will be de-energized enabling a possible acustic signal and a remote repetition. Same signal is shown with tripped breaker. On top of the above it is possible to detect the loss of supply on the auxiliary circuits, by supplying the TCS with same auxiliary voltage. If the end relay is normally energized (fail safe), when there is a lack of supply , the end relay will be de-energized, as per anomaly situations, but in this case the LED’s at the front will be swit

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TCS - 2

TCS RELAY FOR PERMANENT CONTROL OF THE MCCB’S TRIPPING CIRCUIT ELECTRICAL CHARACTERISTICS models and value Auxiliary Voltage supply Maximum consumption Current of circuit under control Voltage of circuit under control Tripping Time delay 0,4÷1 seg. Depending on input Voltage 0,2÷0,5 seg. Depending on input Voltage 0,4÷1 seg. Depending on input Voltage 0,2÷0,5 seg. Depending on input Voltage Reset Time 0,6÷1seg. Depending on input Voltage 1,5÷2 seg. Depending on input Voltage 0,6÷1seg. Depending on input Voltage 1,5÷2 seg. Depending on input Voltage Output:. 2 change-over contacts Working...

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TCS - 3

TCS RELAY FOR PERMANENT CONTROL OF THE MCCB’S TRIPPING CIRCUIT Trip Circuit Supervision Relay Terminals for auxiliary supply Connecting terminals to the circuit under control Signalling lamp of anomaly in the circuit (red LED) Signalling lamp of OK circuit (green LED) Test push button Output terminals of the end relay with double changeover -------------------------------------Vaux 1 - 2 = 24 Vac/dc N R S T 1 - 3 = 48 Vac/dc -------------------------------------Vc 9 - 8 = 24 Vac/dc R 9 - 7 = 48 Vac/dc --------------------------------------

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TCS - 4

TCS RELAY FOR PERMANENT CONTROL OF THE MCCB’S TRIPPING CIRCUIT Trip Circuit Supervision Relay Trip Circuit Supervision Relay MADE IN EU Vc voltage control elettronica www.contrel.it ouput relays Signalling lamp of OK circuit (green LED) Test push button Signalling lamp of anomaly in the circuit (red LED)

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