Owner manual

Infinity D Power System Installation Guide: -48V Plants H2007001
Issue 2.0, June 3, 2009 12
• Torque electrical connections to the values specified on labels or in the product
documentation.
• Battery input cables must be dressed to avoid damage to the conductors (caused by
routing around sharp edges or routing in areas where wires could get pinched) and
undue stress on the connectors.
• Alarm contacts on the office alarm board are not fused; therefore, current limiting
protection for these contacts must be provided by external circuits. Maximum ratings
for alarm connections are 60Vdc and 0.5 amperes. Exceeding these maximum ratings
could result in fire or damage to the unit.
• Fuse and/or circuit breaker loads must not exceed 80% of the fuse and/or circuit
breaker current rating. Distribute loads across the panel.
• The short circuit current capability of the battery input to the distribution panel must
not exceed 10,000A.
• Wiring methods used for the connection of the equipment to the AC Mains Supply
shall be in accordance with the National Electric Code, ANSI/NFPA 70, and the
Canadian Electrical Code, Part 1, CSA C22.1. Maximum 20 A protective device is
required for each branch circuit powering one power supply. Maximum 40 A
protective device is required for each branch circuit powering two power supplies.
Refer to the equipment ratings to assure rating of equipment will not exceed 80% of
the value of the protector chosen.
• High leakage currents are possible due to contribution from simultaneous multiple ac
input connections. Earth ground connection is essential before connecting the ac
source to the shelf. This connection is achieved by bonding the AC grounding
conductor(s) to the AC grounding terminal(s).
• DC Ground System: Due to potentially high DC fault currents, the rack should first
be connected to the office DC ground system per the appropriate telecom industry
practices. This Ground connection should be made before any DC power or the AC
connections are made to avoid the possibility of damaging the AC ground if a DC
fault should occur.
• Readily accessible disconnect/protection device(s) must be incorporated in the
building installation wiring in order to remove power from the equipment in the event
of an emergency or required servicing.
• Disconnect all ac branch circuits prior to servicing. Multiple sources of ac may be
present.
• CAUTION – DOUBLE POLE/NEUTRAL FUSING
o ATTENTION. Double pôle/fusible sur le neutre.
• Installing fuses or circuit breakers not specified for use in these distribution modules
may result in injury to service personnel or equipment damage. Use only replacement
parts listed in this manual and on the equipment drawings.
• The telecom-type (for example, GMT type) fuses can produce sparks during
interruption or clearing of a fault on a high energy circuit. Use only fuses provided
with safety caps for this type of circuit. Installing telecom-type fuses not equipped
with safety caps may result in injury to service personnel.