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4-6 745 Transformer Management Relay GE Power Management

4.3 KEYPAD 4 FRONT PANEL OPERATION

4.3.7 NUMBER KEYS

Number keys are used for direct entry of numeric setpoint values. Thus, enter 27.3 as

2, 7, ., 3

. Each key tog-

gles the display between the corresponding number and a hyphen.

4.3.8 HELP KEY

Press to display a sequence of context-sensitive help messages that automatically advance every few

seconds. After the last message is displayed, the screen returns to the originally displayed message. Press

during the sequence to immediately display the next message. Any other key returns to the normally

displayed message.

4.3.9 RESET KEY

This key is operational when the 745 is in local mode. In local mode, puts all latched relays to the non-

operated state and clears latched targets if initiating conditions are no longer present.

4.3.10 NEXT KEY

If a target becomes active, a diagnostic message overrides the displayed message and the MESSAGE indica-

tor flashes. If there is more than one target active, scrolls through the messages. Pressing any other key

returns to the normally displayed messages. While viewing the normally displayed messages, the MESSAGE

indicator continues to flash if any diagnostic message is active. To return to the diagnostic messages from the

normally displayed messages, press the key.

Note that diagnostic messages for self-resetting targets disappear with the condition, but diagnostic messages

for latched targets remain until they are cleared. When no targets are active, illuminates all front panel

indicators for approximately 5 seconds.

HELP

R ESET

N EXT

Brand	GE
Model	745 TRANSFORMER MANAGEMENT RELAY
Category	Relays
Language	English

GE 745 TRANSFORMER MANAGEMENT RELAY User Manual

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