20
Instruction Book
IB182221EN September 2017 www.eaton.com
GE AM [Cable or Hard Bus Application]
Ground and Test Device
c. Using 0.5 inch hardware, attach one end of each of the three
grounding cables (Figure Set 3.3) to a terminal corresponding to
each phase. (Figure 5.6) Hardware should be torqued to 50 ft lbs.
d. Attach the other terminal of the grounding cables to the copper
ground bar located near the bottom of the truck frame. (Figure
5.7) Hardware should be torqued to 50 ft lbs.
5.4 INSTALLATION OF GROUNDING BUS BARS
ote:
N
Use hardware provided with the Ground and Test Device installed as
shown. (Figure 5.8)
a. Determine the set of terminals to be grounded for test purposes.
Ground and Test bus bars may be used on the upper or lower
terminals of six terminal Ground and Test Devices.
b. Using the key provided (Figure Set 3.3) with each G&T device,
unlock the appropriate door, exposing the terminals.
This feature is not applicable for single terminal Ground and Test
Devices.
c. Remove grounding bus bars from their storage bracket (Figure
5.9).
d. Using the included 1.5 inch long, hex bolts (For AM4.16 use
5/16 & For AM13.8 use 1/2-13) with doubled flat washers, attach
one end of each grounding bus bar (Figure 3.1.e) to the internal
terminal corresponding to each phase (Figure 5.8). Grounding bar
can only be installed one way. Take care to align the mounting
bolts with the integral nut block behind the copper terminal. Do
not fully tighten the mounting hardware.
e. Attach the other end of the grounding bus bar to the horizontal
ground bar (Figure 5.8) with the included 1.5 inch long, hex bolt
(For AM4.16 use 5/16 & For AM13.8 use 1/2-13) with double
flat washers. Horizontal bus bar is between the upper and lower
terminal compartments. Weld nuts are located behind this bus
bar. Do not fully tighten the mounting hardware.
f. Returning to the internal terminals, fully tighten this hardware.
Torque to 15ft-lbs for AM4.16 & 50ft-lbs for AM13.8.
g. Finally tighten the hardware to secure grounding bus bar to
horizontal ground bus. Torque to 15ft-lbs for AM4.16 & 50ft-lbs
for AM13.8.
5.5 INSERTION PROCEDURES
NOTICE
THIS IS NOT A CIRCUIT BREAKER OR AN ELECTRICALLY OPERATED
GROUND AND TEST DEVICE. THEREFORE THERE IS NO SECONDARY BLOCK.
THIS MEANS THAT THERE IS NO TEST POSITION AND IT WILL NOT BE
COVERED IN THIS INSTRUCTION MANUAL.
ENSURE THAT GROUNDING CABLES ARE INSTALLED PROPERLY BEFORE
Figure 5.9. Grounding Bus Bar Storage Area
(AM4.16 250 G&T Shown)
Figure 5.11. G&T Device in the Disconnect Position
(AM13.8 G&T Shown)
Figure 5.10. Alignment of the G&T Device (Withdrawn Position)
(AM13.8 G&T Shown)
