Operation; Glossary Of Terms - Eaton Cutler-Hammer D64 Series Instruction Manual

D64RPBH13 SERIES B1 GROUND FAULT RELAY
Pull-apart terminal blocks simplify connection of field wiring. They have two 12 AWG screw clamps per pole with
90° and 180° orientation. Captive screws secure the blocks to the relay, safe from the effects of shock and
vibration.
The D64RPBH13 operates on a control voltage of 110 - 240 Volts ac/dc.
2.

OPERATION

2.1

GLOSSARY OF TERMS

Circuit Breaker Toggle - Normal:
It is not necessary to apply control voltage to terminals L+ & N- before resetting the toggle of
the circuit breaker to Normal. However, control voltage must be applied to terminals L+ & N- in
order for the relay to sense a trip condition.
With control voltage on terminals L+& N- (green RUN LED flashing), The Normal position
indicates that the D64RPBH13 is sensing a normal condition (no ground fault on the system
being monitored).
In the Normal position the output contacts are in the normal state: Terminals 11-14 closed,
Terminals 11-12 open.
Circuit Breaker Toggle - Tripped:
With control voltage on terminals L+ & N- (green RUN LED flashing), The Tripped position
indicates that the D64RPBH13 has sensed a ground fault current higher than the trip level for a
period longer than the trip time and that the output contacts have operated.
Also, if the D64RPBH13 is in Failsafe mode, the Tripped position will indicate that the control
voltage has been removed from terminals L+ & N-.
In the Tripped position the output contacts are in the tripped state: Terminals 11-14 open;
Terminals 11-12 closed.
Manual Reset:
The toggle of the circuit breaker must be placed in the Normal position to reset the contacts to
the normal state after a trip, providing the ground fault has been cleared or the measured
values are within the preset limits.
Non-Failsafe:
The circuit breaker can be placed in the Normal position with or without control voltage being
applied on terminals L+ & N-. Control voltage must be applied to terminals L+ & N- in order for
the relay to sense a trip condition.
With control voltage on terminals L+ & N- (green RUN LED flashing), the circuit breaker will trip
and the output contacts will change state when the measured values reach or exceed the
DIPswitch settings for current and time.
The Non-Failsafe mode is recommended for the circuit breaker Trip when being used with
shunt trip devices. The circuit breaker should be equipped with a coil clearing contact in its
shunt trip circuit.
Failsafe:
The circuit breaker can be placed in the Normal position with or without control voltage being
applied on terminals L+ & N-. Control voltage must be applied to terminals L+ & N- in order for
the relay to sense a trip condition.
The circuit breaker will trip and the output contacts will change state when either or both of the
following conditions occur:
-
-
The Failsafe mode is recommended for the circuit breaker Trip when being used with
undervoltage devices. This includes: contactor coils; starter coils; and circuit breakers equipped
with UV trip coils.
Revision 2
September, 2009
The measured values reach or exceed the DIPswitch settings for current and time.
Control voltage is removed from terminals L+ & N-.
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