Build-up Circuit Test.

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Field Circuit Test.

TM-55-1905-220-14-10 Landing Craft Utility LCU 1671-1679 NSN 1905-01-009-1056 Manual

Build-up Circuit Test. (Cont)

TM 55-1905-220-14-10

5-29.1. VOLTAGE REGULATOR-MAINTENANCE INSTRUCTIONS (Continued).

(4)

Build-up Circuit Test.

(a) Connect the regulator as shown below, and adjust the single-phase input to V3 in the Test Voltage

Table. The output voltage should not be less than 0.5 volt.

(b) Increase the input to V4 in the Test Voltage Table. The output voltage should rise to a peak and

then drop to approximately zero as the input voltage is increased to the test limit.

(5)

CF field Circuit Test. Connect the regulator as shown below and apply 25 volts ac to terminals 11 and

12. The output current should not be less than 0.35 amp.

5-476