74 DPA 250 S4 50-250 KW OPERATING MANUAL
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9.4 UPS connections
The customer has to supply the cables to connect the UPS to the local power grid source. To ensure cor-
rect operation of the UPS and its ancillary equipment it is necessary to provide the mains cables with
appropriate fuse protection. See chapter 9.3.3.
DANGER
INSTALLATION SHALL COMPLY WITH ALL APPLICABLE NATIONAL, STATE, AND LOCAL CODES
THE INSTRUCTIONS PROVIDED IN THIS USER MANUAL SHOULD ALWAYS BE FOLLOWED IN ORDER TO AVOID
INJURIES FROM ELECTRICAL IMPACTS
ALL THE OPERATIONS IN THIS MANUAL MUST BE PERFORMED BY CERTIFIED ELECTRICIANS OR BY
QUALIFIED INTERNAL PERSONNEL.
DO NOT OPERATE IN CASE OF PRESENCE OF WATER OR MOISTURE.
BY OPENING OR REMOVING THE UPS-COVERS YOU RUN THE RISK OF EXPOSURE TO DANGEROUS VOLTAGES
PHYSICAL INJURY OR DEATH, OR DAMAGE MAY OCCUR TO THE UPS, OR TO THE LOAD EQUIPMENT IF THESE
INSTRUCTIONS ARE IGNORED
THE EQUIPMENT IS PROVIDED WITHOUT INPUT AND OUTPUT BREAKERS, A READILY ACCESSIBLE
DISCONNECT DEVICE SHALL BE INCORPORATED EXTERNAL TO THE EQUIPMENT.
NOTE
EXTERNAL INPUT DISCONNECTION DEVICES MUST BE PROVIDED IN THE INSTALLATION TO PROPER
OPERATE THE UPS
NOTE
POWER GRID REQUIREMENTS:
INPUT NEUTRAL IS REQUIRED TO OPERATE THE RECTIFIER:
that, when open, the system - UPS and all downstream equipment - are floating against the PE.
UPS
0V 230V
NOTE
AVOID THE CONNECTION OF
TWO SEPARATE DERIVED
NEUTRAL IN THE
DISTRIBUTION AS SHOWN IN
THE PICTURE.
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