Emerson 225-600KVA Manuel D’Utilisation

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Specifications
31
Liebert
®
 NX
Table 8
Recommended conduit and cable sizes from Liebert NX UPS to DC supply
 UPS Rating
 kVA
(#) Conduit Size, Ph, G
225
(2); 2C; 2-500kcmil, #1/0AWG
250
(2); 2C; 2-600kcmil; #1/0AWG
300
(2); 2.5C; 2-600kcmil; #2/0AWG
400
(3); 2.5C; 2-600kcmil; #3/0AWG
500
(3); 2.5C; 2-750kcmil; #4/0AWG
600
(5); 2.5C; 2-600kcmil; 250kcmil
The recommendations in this table are guidelines only and are superseded by local regulations and codes of practice where 
applicable:
1. Recommended cable sizes are 75C (THW) wire at 86°F (30°C) ambient.
2. For continuous operations not at 86°F (30°C), Emerson recommends selecting the appropriate cable type based on the particular 
installation requirements.
3. The ground conductor should be sized according to the fault rating, cable lengths, type of protection, etc. The ground cable 
connecting the UPS to the main ground system must follow the most direct route possible.
4. When laying the power cables, do not form coils. Coiling power cables increases the likelihood of electromagnetic interference.
Table 9
Battery torque values
Battery
Code
Manufacturer
Battery Model
Torque Value
in-lb (Nm)
PR
C&D Batteries
UPS12-300MR
110 (12.4)
RR
UPS12-350MR
110 (12.4)
UR
UPS12-400MR
110 (12.4)
WS
UPS12-490MRLP
110 (12.4)
XR
UPS12-540MR
110 (12.4)
PX
Enersys
HX300-FR
65 (7.3)
RX
HX330-FR
65 (7.3)
UX
HX400-FR
65 (7.3)
WX
HX500-FR
65 (7.3)
XX
HX540-FR
65 (7.3)
2K
16HX800F
100 (11.3)
4K
16HX925F
100 (11.3)
QA
East Penn
27HR3500
65 (7.3)
SA
31HR4000
65 (7.3)
WA
31HR5000
65 (7.3)
YA
HR5500
65 (7.3)