91PS UPS rating (kW)
8
10
15
20
30
Rectifier fuse [A]
20
20
32
40
63
Bypass, output cable [mm
2
]
10
16
25
35
70
Bypass fuse [A]
50
63
80
100
160
PE cable [mm
2
]
10
16
16
16
35
Maximum conductor cross
section
15 kW frame and 15 kW C-model: solid/stranded wire
16 mm
2
, stranded wire with ferrule: 10 mm
2
Bypass/output: solid wire: 70 mm
2
, stranded wire with
ferrule: 50 mm
2
30 kW frame: Rectifier: solid wire 70 mm
2
, stranded
wire with ferrule: 50 mm
2
Bypass/output: solid wire 95 mm
2
, stranded wire with
ferrule: 95mm
2
CAUTION
Make sure that prospective short-circuit current resulting at the input terminals
of the UPS is equal or less than conditional short-circuit current declared on
the ratings label of the UPS.
Table 14: Minimum recommended cable and fuse sizes for external battery bank
UPS rating (kW)
8
10
15
20
30
40
Pos. & neg. line [mm
2
]*
1*16
1*16
1*16
1*16
1*35
1*35
Battery fuse [A]
63
63
63
63
160
160
PE cable [mm
2
]
1*16
1*16
1*16
1*16
1*16
1*16
Maximum conductor cross
section
20 kW frame, 20 kW C-model and 40 kW frame with sepa-
rate battery: solid wire: 25 mm
2
, stranded wire with ferrule:
16 mm
2
40 kW frame with common battery: solid wire: 90 mm
2
,
stranded wire with ferrule: 70 mm
2
* Minimum recommended
Note: UPS power upgrading is possible only if the sizing of the external
cables is sufficient. Alternatively, the external cabling must be upgraded as
well. Fuses are of the type gG.
Cable sizing is based on the standard IEC 60364-5-52 table B.52.2 and IEC
60364-5-54 table B.54.2. Sizing is for 70 ºC rated copper cables.
When you connect external batteries to 91PS/93PS UPS, Eaton recommends
that you use the following NZM series molded case circuit breakers.
Eaton 91PS/93PS UPS 8–40 kW
User's and installation guide
©
Eaton Corporation plc 2018. All rights reserved.
Revision: 005
Document ID: P-164000493
41 (117)
