Q1
Q2
1
2
3
4
Q1
Q2
UPS 1
UPS 2
N
e
x
t
p
a
r
a
ll
e
u
n
i
t
3,
4,
5,
JA1
JB1
JA
JB
JB1
JA1
JA2
JB2
JA1
JB1
JB
JA
JB2
JA2
3
4
1
2
3
4
1
2
S
G
S
U
_
2
2
5
-
3
0
0
_
S
2
_
R
P
A
c
o
n
t
r
o
l
b
u
s
c
a
b
l
e
_
0
3
U
S
12
1
13
2
5
14
15
3
4
16 22
11
17
6
18
7
21
8
9
1920
10
3
4
2
1
6
18
712
1
13
2
5
14
15
3
4
1617
22
11
21
89
19
20
10
Fig. 3.9.3-3 Control bus cable routing and connection
Control bus cables routing
Place and fix the cables JA-1/2/3/4/5 and JB-1/2/3/4/5 inside the UPS cabinets in the position
illustrated in the drawing.
NOTE !
Pay attention when cabling and routing the bus cables JA and JB inside the UPS
cabinet.
In case one unit should be removed from the parallel system, the bus cables JA
and JB must be removed from the cabinet without disconnecting them from the
metal plate where the sockets JA and JB are located.
For reliability reasons the cables JA-1/2/3/4/5 and JB-1/2/3/4/5 connecting the units should be run
in separated protected conduits (as indicated in Fig. 3.9.3-3) separated from the power cables.
It is important that the cable JA must be the same length as cable JB.
WARNING !
Connection and commissioning of an additional UPS to an existing parallel system,
must be performed by a GE SERVICE ENGINEER from of your Service Center.
Modifications reserved Page 35/40
OPM_SGS_ISG_M22_M30_2US_V010.doc Installation Guide SG S er i e s 2 25 & 30 0 UL S2
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