GE GEK-106465A Instruction Manual page 29

INTERNAL STATE
52 open
52 closed
TRIP
TRIP with 52 open
Status of Involved Elements
CIRCUIT OUTPUT
STATUS STATUS
(F35-F36)
Healthy Open
Healthy Open
Healthy Closed
Healthy Closed
Defective Open
Defective Open
Defective Closed
Defective Closed
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
HARDWARE
V 52/a
ON
ON
OFF
OFF
BREAKER OPERAND
STATUS CONTACT
INPUT_00_10
(Va_COIL2)
V 52/a (15-16)
52 closed
52 open
52 closed
52 open
52 closed
52 open
52 closed
52 open
CIO Remote CAN Digital I/O Module
V 52/b
ON OK
OFF OK
OFF Ok if t < 0.5 s
ON OK
Inputs to F650
OPERAND
CONTACT
INPUT_00_11
(Vb_COIL2)
V 52/b (17-18)
ON OFF
ON ON
OFF OFF
OFF ON
OFF OFF
OFF OFF
OFF OFF
OFF OFF
SUPERVISION
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)
GEK-106465A