Testing; Injection Testing; Primary Injection Testing; Secondary Injection Testing - GE MOTOR MANAGER 2 Instruction Manual

7 TESTING

7.1 INJECTION TESTING

7.1 INJECTION TESTING

7.1.1 PRIMARY INJECTION TESTING

7 TESTING
Prior to MM2 commissioning, complete system operation can be verified by injecting current through
the phase and ground fault CTs. To accomplish this, a current injection test set is required.
Operation of the entire MM2 control/protection system, except the phase and ground fault CTs, can
be checked by applying input signals to the MM2 from a secondary injection test set as described in
this chapter.

7.1.2 SECONDARY INJECTION TESTING

A simple, single-phase secondary injection test circuit is shown below. Tests should be performed to
verify correct operation and wiring. All functions are firmware driven and this testing is required only
to verify correct firmware/hardware interaction.
The tests described in this chapter can be repeated and modified using setpoints and current levels
more closely suited to the actual installation.
7
MM2 Motor Manager 2 7-1
GE Power Management