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 TM 55-1925-273-10-1
0044 00
Table 11. Main Switchboard (refer to figure 11) (continued)
Key
Control/Indicator
Function
23
VOLTMETER OFF Switch
This switch selects the shore power phases to be displayed on the voltmeter.
24
C PHASE Indicator
This indicates a ground fault condition in the C phase.
25
1S BUS GND DETECT PUSH
This pushbutton is used to test the ground fault indicator lights.
TO TEST LAMPS Pushbutton
26
B PHASE Indicator
This indicates a ground fault condition in the B phase.
27
A PHASE Indicator
This indicates a ground fault condition in the A phase.
28
CORRECT 123
This illuminates to indicate that the phase sequence is correct.
29
INCORRECT 321
This illuminates to indicate that the phase sequence is incorrect.
30
PHASE SEQUENCE
The flashing LEDs indicate phase sequence.
31
C PHASE Indicator
This indicates a ground fault condition in the C phase.
32
B PHASE Indicator
This indicates a ground fault condition in the B phase.
33
2S BUS GND DETECT PUSH
This pushbutton is used to test the ground fault indicator lights.
TO TEST LAMPS Pushbutton
34
A PHASE Indicator
This indicates a ground fault condition in the A phase.
35
AC VOLTS Meter
This meter indicates BUS GEN 1 voltage.
36
VOLT OFF Switch
This switch selects phases for reading on voltmeter.
37
AC AMPERES Meter
This meter indicates SSDG 1 amperage.
38
AMMETER Switch
This switch shases 1, 2, or 3 for reading on the ammeter.
39
HERTZ Meter
This meter indicates SSDG 1 frequency.
40
GENERATOR 1 GOVERNOR
This switch controls SSDG 1 engine speed.
RAISE LOWER Switch
41
AC KILOWATTS Meter
This meter indicates SSDG 1 output in kilowatts.
42
GENERATOR 1 CKT BKR
This switch controls the SSDG 1 circuit breaker.
OPEN CLOSED Switch
43
GENERATOR 1 CIRCUIT
This indicator illuminates to indicate that the SSDG 1 circuit breaker is
BREAKER CLOSED Indicator
closed.
44
GENERATOR 1 POWER
This indicates that SSDG 1 is generating power.
AVAILABLE Indicator
45
GENERATOR 1 AUTO VOLT
This is the voltage adjustment for SSDG 1.
RHEO
46
EMG GEN SWBD BUS TIE
This circuit breaker provides circuit protection for emergency switchboard
1 Circuit Breaker
bus tie 1.
0044 00-22
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