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J
ULY
2013
GTR 8000 Base Station Service Manual
General Installation Standards and Guides
General Power Guidelines and Requirements
Follow the guidelines in the Motorola R56 manual
Standards and Guidelines for
Communication Sites
for information on providing electrical service, power budgeting, selecting
batteries, and other topics for supplying power at the site.
Electrical installation work shall be carried out in accordance with the current edition of the
NFPA 70 and local building codes. Where required, only a qualified and licensed electrician
shall be used for all electrical installations.
General AC Power Guidelines and Requirements
The Motorola R56 manual
Standards and Guidelines for Communication Sites
defines the
guidelines and requirements for cabinets and racks which house equipment that requires AC
power input. Some of the guidelines and requirements are as follows:
•
The cabinet or rack is designed to accept 120/240 V, single-phase power with an amperage
service size as required by the electronic equipment.
•
Cabinets and racks serviced by commercial power must be equipped with a nationally
recognized test laboratory (NRTL) certified power distribution module that contains a
main circuit breaker or individual circuit breakers of the correct size as required for the
electronic equipment or specified by the customer.
•
A decal showing an electrical schematic of the power wiring is affixed to the inside
surface of the cabinet.
•
All AC power equipment and electrical components must conform to National Electrical
Manufacturers Association (NEMA) and National Electrical Code (NEC). These must
also be listed by an NRTL.
•
A surge arrestor, designed to protect equipment systems from a 120/240 V service and
load center, is placed on the power feed ahead of all individual load center circuit
breakers. This gapless arrestor must be listed by an NRTL for the purpose intended.
•
Selection of a surge arrestor is based on the susceptibility of the equipment powered by the
electrical service, with margin provided for locally generated disturbances. See ANSI/
IEEE C62.41 (21) for more details.
•
At least one 120 V AC, 15 A duplex convenience outlet equipped with ground fault
interrupter (GFI) protection must be provided in the electronic equipment compartment.
CAUTION
Do not use surge/transient suppressors without careful and expert
power system analysis.
S
UGGESTION
Redundant devices could be terminated on different AC main phases so that a single
phase failure does not result in a power loss for both devices.