
I N S TA L L AT I O N , O P ER AT I O N S A N D M A I N T EN A N C E M A N UA L
19
Note:
When assembling or connecting to
aluminium bus, apply a suitable joint compound
between the contacting surfaces.
Note:
Standard plating is tin. Refer to factory for
alternate plating.
Remove the top Lexan barrier, as shown in Figure
2A and Figure 33, to access the main bus. Refer to
instruction drawings in splice kit. See table 2.
Bus splice kits
—
33
—
33
Horizontal bus barrier
mounting slot and screw
Bolt size
Copper joints
Aluminium joints
lb-ft
N-m
lb-ft
N-m
5/16-18
5-9
7-12
6.5-9
9-12
3/8-16
12-16
16-22
10-15
14-20
1/2-13
30-39
41-53
25-35
34-47
5/8-11
65-80
88-108
35-45
47-61
3/4-10
125-150
169-203
50-75
68-102
Amps
Main bus splice
assembly kit
Bars/
phase
copper
Size (in.)
(thick x
width)
SC
rating
600V
max
(sym.
amps)
Splice
instruction
drawing
Standard splicing
600
110C1735G1SM
1
1/4x2
65K 110C1258
800
110C1735G4SM
1
3/8x2
65K 110C1256
1200
110C1735G7SM
1
1/2x2
100K 110C1253
1600/
2000
110C1735G12SM
2
1/2x2
100K 110C1263
2500
110C1735G13SM
2
1/2x2
100K 110C1785
2500/
3200
110C1735G38SM
3
2/5x4
100K 110C2357
N3R and spacer shells
600
110C1735G14SM
1
1/4x2
65K 110C1258
800
110C1735G15SM
1
3/8x2
65K 110C1256
1200
110C1735G16SM
1
1/2x2
100K 110C1253
1600/
2000
110C1735G17SM
2
1/2x2
100K 110C1263
2500
110C1735G13SM
2
1/2x2
100K 110C1763
2500/
3200
110C1735G39SM
3
2/5x4
100K 110C2357
Table 1: Torque values for various bolt sizes and joint types
*included in kits
Table 2: Bus splice kits splicing from / to ReliaGear
NOTICE
NOTICE
Bus splicing steps for 2500A
without fans, and
3200A main bus
For 2500A without fans, and 3200A main bus, it is
recommended to pre-mount the align and torque
all splices in all phases before you join the section if
possible. If splicing from the left, pre-mount the
splice and pre-torque bolts from right case side
opening. If splicing from the right, slide in bus bars
through left case side opening and access the bolts
for torquing through the vertical wireway.
Step 1:
Mount on left side of section
Transition case and
MAIN/MLO section
Splices mounted on
the left side of section
Step 2:
Connect feeder section with splices
Connecting Feeder
section with splices
to MAINs/MLOs with
transition case
Step 3:
Connect main buses with splices
3 pieces/phase
of splices
Main buses
connected
by splices