Circuit Breaker Spring-Charged Indication; Gas Pressure Supervision - ABB COM600 series User's & Technical Manual

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the limit value set with the LO Acc currents Pwr threshold setting, the IPOW_LO output

is activated.

The IPOW_ALM and IPOW_LO outputs can be blocked by activating the binary input

BLOCK.

Circuit breaker spring-charged indication

The circuit breaker spring-charged indication subfunction calculates the spring charging

time.

The operation of the subfunction can be described with a module diagram. All the

modules in the diagram are explained in the next sections.

Figure 5.7-1 Functional module diagram for circuit breaker gas pressure alarm

Spring charge time measurement

Two binary inputs, SPR_CHR_ST and SPR_CHR, indicate spring charging started and

spring charged, respectively. The spring-charging time is calculated from the difference

of these two signal timings.

The spring charging time T_SPR_CHR is available in the monitored data view.

Alarm limit check

If the time taken by the spring to charge is more than the value set with the Spring charge

time setting, the subfunction generates the SPR_CHR_ALM alarm.

It is possible to block the SPR_CHR_ALM alarm signal by activating the BLOCK binary

input.

The gas pressure supervision subfunction monitors the gas pressure inside the arc

chamber.

The operation of the subfunction can be described with a module diagram. All the

modules in the diagram are explained in the next sections.

functional_module_diagram_for_circuit_breaker_gas_pressure_alarm.png

1MRS758734

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