Trip Circuit Supervision
Relay

Features
Low burden
Trip circuit can be supervised with breaker open or closed
Mist ripping of breaker by accidental short circuit avoided

Application
The type TCSR trip circuit relay supervises the trip circuit of circuit breaker.
Initiating audible alarm and visual indication if the trip circuit fails or the mechanism dose not operate the unit is normal the unit picks up below 80% of rated voltage.
The relay consists of two units connected as shown in figure.
Under healthy conditions with the circuit breaker closed both units are energized. If the trip circuit becomes open or the supply fails, unit RL2 drops off and opens off and opens contact RL2-1 to deenergize unit RL1. When the circuit breaker is open the auxiliary switch shunts contact RL2-1 to hold in unit RL1. The units are delayed on drop off for a total of 400ms, to prevent a false alarm due to voltage dips caused by faults in other circuits or during a normal tripping operation.

Name:
Trip Circuit Supervision
Relay
Type:
HRTC 10

AC ripple on dc supply The unit will withstand 12% ac ripple on the dc supply

High voltage impulse
IEC 255-5

High voltage withstand

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