GE Industrial Solutions LP 33U Series 10 & 20 kVA Installation Guide - Manual (Page 24)

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OPM_LPS_3UI_10K_20K_1US_V010.doc Installation Guide LP 33U Series 10 & 20 kVA / S1
3.8 WIRING CONNECTION
WARNING!
UPS installation and connection must be performed by QUALIFIED SERVICE
PERSONNEL only.
3.8.1 Power connections
Input/output and DC connections are provided with terminal blocks.
Please refer to chart for torque specifications.
Carefully read the following recommendations before proceeding:
•
Ensure that the AC and DC external isolators are OFF and locked to prevent their inadvertent
operation.
• Do not close any external isolators prior the commissioning of the equipment.
• The preferred power cable entry location for installation purposes is from the bottom right side of
the UPS (see Fig 3.8.1-1).
For cable entry from the bottom remove the cover plate and provide for a suitable isolated
protection cover.
• The input/output cables must be connected in clockwise phase rotation for both Bypass and
Rectifier Input Terminals if separate, taking care to avoid risk of short circuit between different
poles.
• The grounding and neutral connection of the electrical system must be in accordance with local
regulations.
• In case of additional cabinets containing batteries, input/ output transformers, etc, their ground
terminals must be connected to the UPS main ground terminal.
• Once the power cables have been connected, re-install the internal safety shields and close the
cabinets by re-installing all external panels.
Torque Specifications
Mechanical Terminals
Input / Output / Battery and GND
UPS Model WIRE SIZE RANGE Lb - in Nm
LP 33U Series / 10 kVA Max 4 AWG 27 3
LP 33U Series / 20 kVA Max 4 AWG 27 3