Voltage Input - GE 745 TRANSFORMER MANAGEMENT RELAY Instruction Manual

5.4 S2 SYSTEM SETUP
The 745 provides a voltage input for the purposes of energization detection (for the ENERGIZATION INHIBIT
feature of the percent differential element), overexcitation protection (the VOLTS-PER-HERTZ 1 and 2 func-
tions), and frequency protection (the UNDERFREQUENCY, the FREQUENCY DECAY and the OVERFRE-
QUENCY functions). Note that the frequency elements will use Winding 1, phase A current input if voltage is
not available.
S VOLTAGE INPUT
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VOLTAGE SENSING:
Disabled

VOLTAGE INPUT

PARAMETER: W1 Van
NOMINAL VT SECONDARY
VOLTAGE: 120.0 V
VT RATIO:
5
1000:1
5-38
This message indicates the start of the VOLTAGE INPUT section. To continue
with these setpoints press
section.
Range: Disabled / Enabled
Enter Enabled when connecting a voltage transformer to this input.
Range: W1 Van / W1 Vbn / W1 Vcn / W1 Vab / W1 Vbc / W1 Vca / W2 Van
/ W2 Vbn / W2 Vcn / W2 Vab / W2 Vbc / W2 Vca / W3 Van / W3 Vbn
/ W3 Vcn / W3 Vab / W3 Vbc / W3 Vca
Enter the winding and phase of the voltage connected to the voltage input.
Range: 60.0 to 120.0 (steps of 0.1)
Enter the nominal secondary voltage (in volts) of the voltage transformer.
Range: 1 to 5000 (steps of 1)
Enter the ratio of the voltage transformer.
745 Transformer Management Relay
5.4.7 VOLTAGE INPUT
, or press
E N TE R M E SSA G E
GE Power Management
5 SETPOINTS
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