25
KEOR S 3-10 kVA
Oper
ating & I
nstalla
tion M
anual
Figure.5.4.3-1
Parallel System Accessories
5.4.3.
Installation Instruction
Make sure those wires & cables used in the input, output and battery are separately installed. Do not inter-
cross or mix those wires & cables together to avoid from any unnecessary noise interference.
The communication connecting wires for parallel function and other wires for control signals, including
RJ45, RS232, RS485, USB, ESD and Shutdown shall be kept away from those wires and cables mentioned
before. If there is no possibility to avoid such from happening, please put them at 90 degree or least dis-
tance 20cm as indicated below.
“Little Leakage Currents” generated by the UPS, it is necessary to double check if the earth of the UPS is
properly grounded.
Must be selective with residual current circuit breakers downstream of the UPS connected to the UPS
output. In the event of parallel UPS, use a single residual current circuit breaker upstream of the UPSs.
Please refer to the specs of input current, output current and recommended conductors listed as below:
AC input and Output
Model
Maximum Current
Conductor Section
6KVA
33A
AWG # 9
10KVA
54.3A
AWG # 7
Battery Input
6KVA
25A
AWG # 10
10KVA
41A
AWG # 10
Recommended Circuit Breaker installed in the Input - Output of the UPS*
6KVA
32A – 32A
30A
10KVA
63A – 50A
63A
Table 3
2.*It should be 2-pole type “C” or “D” and their current ratings should be as listed above
Incorrect
A Communication or Control signal wires
B Power wires & cables
Correct
