18
Item
Checked components
DVM Function
Reference Value
Fail Condition
1
F303
、
F304
Ω
0
Ω
open
(A, K)
Ω
≈
2.5M
Ω
short
2 Q305
(G, K)
Ω
≈
10
Ω
short
2.4 INV part:
Item
Checked components
DVM Function
Reference Value
Fail Condition
(E, C)
Ω
≈
100k
Ω
short
1
Q201, Q202,
Q203,Q204
(G, E)
Ω
23.5k
Ω
short or open
2
D201, D202, D203.D204
DIODE
≈
0.36V
0V
3
R201, R202, R208, R209
Ω
10
Ω
open
4
R203, R204, R210,R211
Ω
36
Ω
open
5
D210, D211, D212.D213
DIODE
46
Ω
open
IP SCR
板
Item
Checked components
DVM Function
Reference Value
Fail Condition
1
F1
、
F2
Ω
0
Ω
open
(A, K)
Ω
≈
2.5M
Ω
short
2
Q3, Q4,
Q5,Q6
(G, K)
Ω
≈
10
Ω
short
8. Parallel maintenance
This UPS has the function of parallel redundancy
,
so if you need to add single UPS to
the parallel system, refer to the following operating process of adding a new UPS. If you
need to remove the UPS for load reduced or UPS damaged, refer to the following
operating process of removing the paralleled UPS.
Operating process of adding a new UPS
:
1. Users need to prepare the input and output cables, the switches and the parallel
cable before adding a new unit;
2. The switches of the input and output cables must be off. Connect the input and
output cables as well as the battery pack according to the mark on the terminal block.
Remove the short connection wire between JP1 and JP2 on the terminal block at the
same time;