GE TRANSFORMER MANAGEMENT RELAY 745 Instruction Manual page 144

5.8 S6 TESTING
5.8S6 TESTING
The 745 provides various diagnostic tools to verify the relay functionality. The normal function of all output contacts can be
overridden and forced to be energized or de-energized. Analog outputs may be forced to any level of their output range.
The simulation feature allows system parameters (magnitudes and angles) to be entered as setpoints and made to gener-
ate fault conditions without the necessity of any system connections. In addition, 16 cycles of sampled current/voltage
waveform data (in IEEE Comtrade file format) can be loaded and "played back" to test the response of the 745 under any
(previously recorded) system disturbance.
PATH: SETPOINTS S6 TESTING
OUTPUT RELAYS
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5
The 745 has the ability to override the normal function of all outputs, forcing each to energize and de-energize for testing.
Enabling this feature turns the In Service LED off and the Test Mode LED on. Refer to Figure 5–45: Output Relays Scheme
Logic on page 5–91 for the output relay scheme logic.
• FORCE OUTPUT RELAYS FUNCTION: Select Enabled to enable the output relay testing feature and override normal
output relay operation. This setpoint is defaulted to Disabled at power on.
• FORCE OUTPUT 1 to 8: Select "Energized" to force Output 1(2-8) to the energized state or "De-energized" to force
Output 1(8) to the de-energized state. This setpoint is only operational when output relay testing is enabled.
• FORCE SELF-TEST RLY: Select Energized to force the self-test relay to the energized state and De-energized to
force to the de-energized state. This setpoint is only operational while the output relay testing feature is enabled.
PATH: SETPOINTS S6 TESTING
ANALOG OUTPUTS
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The 745 has the ability to override the normal function of analog transducer outputs, forcing each to any level of its output
range. Enabling this feature turns the TEST MODE indicator on and de-energize the self-test relay.
• FORCE ANALOG OUTPUT FUNCTION: Select Enabled to enable the analog output testing and override the analog
output normal operation. This setpoint defaults to Disabled at power on.
• FORCE ANALOG OUT 1 to 7: Enter the percentage of the DC mA output range of Analog Output 1(7). For example,
if the analog output range has been programmed to 4 to 20 mA, entering 100% outputs 20 mA, 0% outputs 4 mA, and
50% outputs 12 mA. This setpoint is only operational if analog output testing is enabled.
5-94
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OUTPUT RELAYS
ð
FORCE OUTPUT RELAYS
ENTER
FUNCTION: Disabled
ESCAPE
FORCE OUTPUT 1:
ESCAPE
De-Energized
MESSAGE
↓
FORCE OUTPUT 8:
ESCAPE
De-energized
MESSAGE
FORCE SELF-TEST RLY:
ESCAPE
De-energized
MESSAGE
ANALOG OUTPUTS
ð
FORCE ANALOG OUTPUTS
ENTER
FUNCTION: Disabled
ESCAPE
FORCE ANALOG OUT 1:
ESCAPE
De-Energized
MESSAGE
↓
FORCE OUTPUT 7:
ESCAPE
De-energized
MESSAGE
745 Transformer Management Relay
5.8.1 DESCRIPTION
5.8.2 OUTPUT RELAYS
Range: Enabled, Disabled
Range: De-energized, Energized
Range: De-energized, Energized
Range: De-energized, Energized
5.8.3 ANALOG OUTPUTS
Range: Enabled, Disabled
Range: De-energized, Energized
Range: De-energized, Energized
5 SETPOINTS
GE Multilin