TM 9-6115-604-34
NAVFAC P-8-633-34
f.
Exciter Stator Assembly.
(1)
Align the lead shield (11, Figure 5-1) with the exciter stator assembly (10), noting sop front position on the
latter previously marked for reference.
(2)
Mount the lead shield (1i1) and exciter stator assembly (10) to the generator bracket (19) with hexagon
head screws (8) and belleville washers (9). Position belleville washers (9) such that the indented washer
sides are facing away from the screw (8) heads (see detail inset Figure 5-1). Torque screws (8) to 60
pound-feet (81 newton-meters).
(3)
Tie together the two exciter field wires Fl and F2 with clamps and secure to the bracket (19) and conduit
box assembly (32).
(4)
Reconnect exciter stator field wires Fl and F2 to the terminal strip TB1 04 (12, Figure 5-2) as tagged.
Remove and discard tags.
(5)
Install exciter rotor assembly in accordance with paragraph 5-7.
g.
Rotating Rectifier Assembly.
(1)
See detail A, Figure 5-1. Position the rotating rectifier assembly on the aluminum standoff (14) such that
the top hexagon head screws (45) are within reach of the exciter rotor leads.
(2)
Secure rotating rectifier assembly to the aluminum standoff (14) using four hexagon head screws (50) and
lockwashers (51).
(3)
Reconnect generator field leads and exciter rotor leads as tagged on hexagon head screws (45) and
secure with nuts (40). Remove and discard tags.
(4)
Reinstall conduit box cover assembly (6) using hexagon head screws (5).
h.
Strip Heaters.
(1)
Slide the strip heater (59, Figure 5-1) and mounting bracket (62) assemblies along the bottom of the main
stator coil assembly (33) (one strip heater on each side of the bottom stator bar) with the spring clip end in
first and facing upwards.
(2)
Continue sliding the heater assemblies in until spring clip snaps in place and heater mounting bracket
holes are aligned with the predrilled heater mounting holes on the generator bracket (19). Secure strip
heaters in place with mounting screws (60).
(3)
With wire clamp, tie together heater lead wires Hi, H2, H3, and H4 and secure to the clamp mounting hole
near the bottom of the conduit box assembly (32).
(4)
Tie together heater wires Hi, H2, and exciter field wire Fl with wire clamps and secure clamps to the left
side of the conduit box assembly (32). Tie together heater wires H3, H4, and exciter field wire F2 with wire
clamps, and secure on the left side of conduit box assembly (32).
(5)
Reinstall conduit box cover assembly (6) using hexagon head screws (5).
5-10. GENERATOR GI INSTALLATION. Install generator Gi on generator set in accordance with Chapter 2.
SECTION Ill. VOLTAGE REGULATOR VR101
5-11. GENERAL. See Figure 5-9 and Figure 5-10. Voltage regulator VR1 01 monitors and regulates the output voltage
at generator G1.
a.
Isolation transformer T102 senses generator Gi voltage from lines T2 and LO. The transformer steps down the
voltage from 2400 V ac to 240 V ac which is applied to VRi01 terminals 3 and 4.
b.
Inside voltage regulator VR101, the 240 V ac is converted to DC and compared to a reference voltage. Based
on this comparison, VR1 01 supplies DC current, via output terminals F+ and F-, to the exciter field of generator
GI.
5-23
