GE GEK-106465A instruction manual 52/a 52/b, Status of Involved Elements Inputs to F650

HARDWARE

INTERNAL STATE	V 52/a	V 52/b	SUPERVISION
52 open	ON	ON	OK
52 closed	ON	OFF	OK
TRIP	OFF	OFF	Ok if t < 0.5 s
TRIP with 52 open	OFF	ON	OK

Status of Involved Elements			Inputs to F650
CIRCUIT	OUTPUT	BREAKER	OPERAND	OPERAND
STATUS	STATUS	STATUS	CONTACT	CONTACT
	(F35-F36)		INPUT_00_10	INPUT_00_11
			(Va_COIL2)	(Vb_COIL2)
			V 52/a (15-16)	V 52/b (17-18)
Healthy	Open	52 closed	ON	OFF
Healthy	Open	52 open	ON	ON
Healthy	Closed	52 closed	OFF	OFF
Healthy	Closed	52 open	OFF	ON
Defective	Open	52 closed	OFF	OFF
Defective	Open	52 open	OFF	OFF
Defective	Closed	52 closed	OFF	OFF
Defective	Closed	52 open	OFF	OFF

Decision

OPERAND CONTACT INPUT_00_15 (SUP_COIL2)

ON

ON

ON (if t < 500 ms) OFF (if t > 500 ms)

ON (if t < 500 ms) OFF (if t > 500 ms)

OFF (500 ms delay)

OFF (500 ms delay)

OFF (500 ms delay)

OFF (500 ms delay)

There is a possibility to monitor the trip circuit continuity not only via its auxiliary contact 52/a, but also with auxiliary contact 52/b. This avoids the need to install a resistance in parallel with auxiliary 52/a. The correct connection is shown on FIGURE 3-12.

The circuit works in a similar way to the one described in the previous section, but it uses both supervision inputs 15- 16 and 17-18.

The advantage in this case is that circuit supervision with 52 open is more complete, as input V 52/b is used through contact 52/b, (that is closed when the breaker is open).

We must point out that in this scheme, the tripping contact, shown in the example as the CIO trip relay, can be the one in the relay (terminals 35 and 36), or be provided by another protection or by the parallel of several protections. This provides high flexibility in the use of this circuit.

The battery voltage can also be monitored, by using one of the standard digital inputs.

28 CIO Remote CAN Digital I/O Module GEK-106465A