91PS UPS rating (kW)
8
10
15
20
30
Maximum conductor cross
section, 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: 95 mm
2
CAUTION
Make sure that prospective short-circuit current resulting at the UPS input terminals is
equal or less than conditional short-circuit current declared on the ratings label of the
UPS.
Table 6. 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
15/20 kW frame, C-model and 30/40 kW frame with separate
battery: solid wire: 25 mm
2
, stranded wire with ferrule: 16 mm
2
30/40 kW frame with common battery: solid wire: 90 mm
2
, stranded
wire with ferrule: 70 mm
2
For information on rated and maximum currents for rated power and voltage, refer to the
Eaton 91PS/93PS UPS 8-40 kW User’s and Installation Guide.
For the external separate battery option, there are separate terminals for both battery
banks (cabinets), refer to Section 2.3.1.
NOTE: External overcurrent protection is not provided by this product, but is required by
codes. Refer to Table 4 and 5 for wiring requirements. If a lockable output disconnect is
required, it must be supplied by the user.
Table 7. UPS power cable terminal torques
UPS frame
Function
Tightening torque Nm
93PS 20 kW
X1, X2, X3: L1, L2, L3, N
1.6
X4: b/-
3
PE (ground)
10 Nm for 16-35 mm
2
wire
6 Nm for 4-10 mm
2
wire
4 Nm for 2.5 mm
2
wire
93PS 40 kW
X1, X2, X3: L1, L2, L3, N
6
X4: b/-
6
PE (ground)
10 Nm for 16-35 mm
2
wire
6 Nm for 4-10 mm
2
wire
4 Nm for 2.5 mm
2
wire
EN
7
