Primary Injection Testing - GE 239 Instruction Manual

GE Consumer & Industrial
Multilin
239
Motor Protection Relay
CAUSE OF LAST TRIP:
MECHANICAL JAM
TRIP AUXILIARY PICKUP
ALARM SERVICE COMMUNICATE
ACTUAL
MESSAGE
SETPOINT
STORE
VALUE
RESET
7.1 Testing
7.1.1

Primary Injection Testing

239 MOTOR PROTECTION RELAY – INSTRUCTION MANUAL
Courtesy of NationalSwitchgear.com
239 Motor Protection Relay
Chapter 7: Testing
Testing
Prior to relay commissioning at installation, complete system operation can be verified
by injecting current through the phase and ground CTs. To accomplish this, a primary
high current injection test set is required. Operation of the entire relay system, except
the phase and ground CTs, can be checked by applying input signals to the 239 from a
secondary injection test set as described in the following sections.
7–95