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TM 10-4320-342-24
4-4. STARTER-GENERATOR REPAIR - continued.
(3)
Tests.
(a)
Maximum Speed for Regulation. Without operational warmup and with regulator connected to the starter-
generator, operate the starter self-excited at 13,000 rpm 28.5 volts DC, and no load. Calculate resistance
between terminals B and A by dividing B to A voltage by the field current. B to A resistance shall not be
greater than 35 ohms.
Refer to Figure 4-21.
(b)
Continuous Operating Speed and Equalizing Voltage. With regulator connected to the starter-generator,
operate starter-generator at 12,000 rpm, 30 volts, 200 amperes for 15 minutes. Record the voltage
between terminals D and E, inlet air temperature and winding or frame temperature. Frame temperature
shall not exceed inlet air temperature by more than 175 F (79.5C). The equalizing voltage between
terminals D and E shall be within the limits shown in Figure 4-18.
Figure 4-21. Equalizing Voltage - Volts
4-26
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