][2.9
SURGE SUPPRESSION
**************************************************************************
NOTE: Specify surge suppression for projects
administered by SOUTHNAVFACENGCOM and for all areas
with high potential for lightning damage. Consult
the EFD/EFA Fire Protection Engineer if additional
guidance is needed.
**************************************************************************
Provide line voltage [and low voltage] surge suppression devices to
suppress all voltage transients which might damage system transmitter[,
CAD,] and receiving/control network components. Mount suppressors in
separate enclosures adjacent to each transmitter[, computer,] and
receiving/control network unless suppressors are specifically UL listed or
FM approved for mounting inside the transmitter and receiving /control
network enclosures and approved for such use by the radio system
manufacturer. Provide line voltage suppressors which are UL 1449 listed
having a maximum 330 volt clamping level and a maximum response time of 5
nanoseconds. Suppressors shall also meet IEEE C62.41 Category B tests for
surge capacity. Suppressors shall be multi-stage type which include
inductors and silicon avalanche zener diodes. Provide suppressors with
long-life indicating lamp (light emitting diode or neon lamp) which
extinguishes upon failure of the protection components. Fuses shall be
externally accessible. Wire in series with the incoming power source ahead
of the protected equipment, using screw terminations.
[Provide low voltage surge suppressors for all wired circuits which leave
the building shell. When circuits connect two or more buildings, provide a
suppressor at each circuit entrance to each building. Suppressors shall be
UL 497B listed with a maximum 30 volt clamping level and a maximum response
time of 5 nanoseconds and multi-stage construction having both differential
and common-mode protection.]
]2.10
RADIO ALARM TRANSMITTER BATTERY CONDITIONER
Provide a battery conditioner for use in discharging and recharging
batteries which have been removed from battery-powered radio alarm
transmitters in accordance with the transmitter manufacturer's recommended
maintenance procedures. Unit shall be self-regulating.
2.10.1
Capacity
The conditioner shall have the capacity to simultaneously recharge a
minimum of five batteries from full discharge to full charge within 72
hours. The unit shall operate from 120 VAC, 60 Hz power.
2.10.2
Meter
The battery conditioner shall include a meter and selector switch for
monitoring the voltage of any battery attached.
2.11
RADIO ALARM TRANSMITTER BATTERY LOAD TESTER
Provide a load tester capable of applying a load to a radio alarm
transmitter battery sufficient to determine whether or not the battery has
the capacity to operate a transmitter. The load tester shall have a
receptacle for connecting radio alarm transmitter battery and shall include
SECTION 13853N
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