TM 96115-604-34
NAVFAC P-8633-34
SECTION V. SURGE CAPACITOR C101
5-25. GENERAL. The surge capacitor is a radio frequency interference (RFI) component designed to filter RFI
emissions from generator G1 output to ground.
5-26. MAINTENANCE OF SURGE SUPPRESSOR CAPACITOR C101.
a.
Remove.
See Figure 5-9.
WARNING
Allow 5 minutes after deenergizing or disconnecting system to permit the capacitor to drain
through the Internal discharge resistor. Then for safety, short circuit the terminals again
using a shorting bar with Insulated handles, before handling.
(1)
Tag cables (13, 14, and 15).
(2)
Remove hexagonal nuts (6) and lockwashers (7). and remove cable (15) from surge capacitor C101 (20).
(3)
Remove hexagonal nuts (4) and lockwashers (5), and remove cable (14) from surge capacitor C101 (20).
(4)
Remove hexagonal head capscrews (8), flat washers (9), lockwashers (10), and hexagonal nuts (11), and
remove surge capacitor mounting strap (12) and cables (13 and 14).
(5)
Remove hexagon head capscrews (16), flat washers (17), lockwashers (18), and hexagonal nuts (19), and
remove surge capacitor C1 01 (20).
(6)
Remove hexagon head capscrews (21), lockwashers (22), and hexagonal nuts (23), and remove surge capacitor
x, brace (24).
(7)
Remove hexagon head capscrews (25), lockwashers (26), and hexagonal nuts (27), and remove surge capacitor
brace (28).
(8)
Remove hexagon head capscrews (29), lockwashers (30), and hexagonal nuts (31), and remove surge capacitor
support bracket (32).
b.
Inspect.
(1)
Inspect for chips, cracks or looseness in ceramic standoffs.
(2)
Inspect for fluid leaks from main case.
(3)
Inspect cable ends for frayed or broken wires, cracked insulation or loose connectors. Replace or repair
damaged cables.
c. Test
(1)
Using a 5 KV megohmmeter, check continuity between each terminal and the ground stud. Meter should indicate
15.3 to 18.7 megohms. This is the resistance of the internal discharge resistor.
WARNING
Allow 5 minutes after testing to permit the capacitor to drain through the Internal discharge
resistor. Then for safety, short circuit the terminals again using a grounding stick with
Insulated handles before handling.
(2)
Replace surge capacitor C101 if resistance is not within tolerance.
5-60
