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1.13.3 Maintenance Free Battery Set Assembly. | Up
TM-9-6115-668-13 5Kw 28VDC Auxiliary Power Unit (APU) MEP 952B Manual | Next
1.14 FUNCTIONAL DESCRIPTION. |
TM 9-6115-666-13
The exciter voltage and therefore the phase/line voltages are adjusted with the VOLTAGE ADJUST po-
tentiometer (R3) to 120/208 V, and displayed on the VOLTAGE meter (P6). They are applied to recep-
tacles L1 (0A), L2 (0B), L3 (0C) and N.
The temperature of the stator winding is monitored by a thermistor (control line
), which is connected to
thermistor relay F12 in the control cabinet. If the stator winding reaches or exceeds a temperature of
approximately 302 °F (150 °C), F12 shuts down the Generator Set 150 kW and the GENERATOR OVER
TEMPERATURE illuminated pushbutton switch (H10, S6) lights up. The alarm signal is applied to PAR-
ALLEL OPERATION receptacle J9, and is sent via the EPP III to the ECS.
Key to Figure 1-4
Monitoring
Setpoint
Actual value
Preheat
Figure 1-4 Generator Set 150 kW, Block Diagram.
1 - 1 7
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