20
External Battery Cabinet Positive
Pole(+),Neutral pole,Negative
pole(-),
Min.conductor cross section[mm
2
]
Max.conductor cross section[mm
2
]
10
13
21
25
Line input Backfeed protection device
A 4-pole disconnection device with
100A/250VAC, less than 15s break
time and min. 1.4mm clearance
will be used in final installation for
backfeed protection in line input.
M2 input Backfeed protection device
A 2-pole disconnection device with
100A/250VAC, less than 15s break
time and min. 1.4mm clearance
will be used in final installation for
backfeed protection in line input.
Protective Earthing conductor[mm
2
]
Max.13
Max.25
Torque for fixing above terminals
(10 1b in)
(18 1b in)
Sheet.1 tower 3/1 10KVA/20KVA models
Model
10k-31C
Input L2,L3
Min.conductor cross section[mm
2
]
Max.conductor cross section[mm
2
]
2.5
4
Input L1,L2,L3,N switch (A)
63A,250VAC
Output switch(A)/maintain switch(A)
63A,250VAC
Input L1,N
Min.conductor cross section[mm
2
]
Max.conductor cross section[mm
2
]
10
13
Input fuse (A)
30A,250VAC
21
Output L,N,
Min.conductor cross section[mm
2
]
Max.conductor cross section[mm
2
]
10
13
External Battery Cabinet Positive
Pole(+),Neutral pole,Negative
pole(-),
Min.conductor cross section[mm
2
]
Max.conductor cross section[mm
2
]
10
13
Protective Earthing conductor[mm
2
]
MAX 13
Torque for fixing above terminals
(10 1b in)
Sheet.2 tower 3/1 10K-31C model
4.3 Operating Procedure for Connecting with The
External Battery
1. For tower 3/1 10K-20K, The nominal DC voltage of external battery
pack is 288VDC. Each battery pack consists of 24 pieces of 12V
maintenance free batteries in series. For tower 3/1 10k-31C model,
the nominal DC voltage of external battery pack is 240VDC. Each
battery pack consists of 20 pieces of 12V maintenance free batteries
in series ,To achieve longer backup time, it is possible to connect
multi-battery packs, but the principle of “same voltage, same type”
should be strictly followed.
2. For tower 3/1 10K-20K, select the UL1015 8AWG (10mm
2
)/6AWG
(25mm
2
) wire respectively or other insulated wire which complies
with AWG Standard for the UPS battery wirings. The procedure of
installing battery bank should be complied with strictly. Otherwise
you may encounter the hazardous of electric shock.
1) For tower 3/1 series if the UPS has internal battery pack, first of
all, disconnect the internal battery pack DC connectors.
