Enclosure Safety Issues; Battery Safety Issues - Multilink EDP Series Installation Manual

Two Power Sources:
All power supplies documented in this instruction manual use more than one source of power. If any reason exists to
open the power supply enclosure for maintenance or adjustments, first disconnect the Battery Harness from its
receptacle and open the AC Input circuit breaker on the front panel. Internal DC circuits will retain harmful electrical
charge after disconnecting both power sources from the UPS. Only trained personnel should be permitted to handle
this UPS.
Ground Fault Protection:
The power supply does not contain integral ground fault protection. Where such protection is required, the power
supply input should be connected to a ground fault interrupter (GFI) outlet or to a branch circuit protected by a GFI
circuit breaker of proper ratings.

Enclosure Safety Issues:

The enclosure and the power supply must be installed by qualified technicians or installers only, using appropriate
mounting hardware in accordance with local codes and construction practices.
The power supply must be installed within a NEMA 3R or grounded metal enclosure suitable for accommodating
DOT/ITS power supplies.
The outer enclosure housing the power supply must be of adequate strength to support the power supply and its
associated batteries. Additionally, the enclosure must afford adequate ventilation for the power supply such that a
minimum free air space of 52 mm (2 inches) remains around all sides and the top of the power supply.
Temperature of the air flowing around the power supply may be rated up to 74° C (165° F). Air intake and exhaust
openings within the enclosure must not be less than what is required to maintain this temperature requirement. If these
temperature limits are routinely exceeded or ventilation requirements cannot be attained, a suitable forced-air cooling
system may be required within the enclosure.

Battery Safety Issues:

When choosing a battery type (gelled electrolyte or AGM) for installation, it is not recommended mixing different
types of batteries in the same string. DO NOT use flooded type batteries containing liquid electrolyte under any
circumstances. Such batteries are hazardous to use within DOT/ITS enclosures and can degrade or destroy equipment
installed in the enclosure with them. Flooded batteries also pose environmental hazards when acid containment
methods cannot be employed. Use only gelled electrolyte or AGM batteries of suitable size, voltage and capacity for
use in a DOT/ITS system.
Batteries can supply extremely large currents (>4000 amps) for a short period of time, sufficient to
vaporize or melt metal objects. For this reason, installers must remove watches, rings and other jewelry
before placing or connecting batteries in the cabinet. Insulating gloves and protective clothing should be
worn during battery installation, consistent with local practices. Use only fully insulated tools designed for
battery maintenance.
Les batteries peuvent fournir des courants extrêmement importants (> 4000 ampères) pendant une courte
période, suffisant pour vaporiser ou faire fondre des objets métalliques. Pour cette raison, les installateurs
doivent enlever les montres, bagues et autres bijoux avant de placer ou de connecter les piles dans le cabi-
net. Des gants isolants et des vêtements de protection devraient être portés pendant l'installation de la bat-
terie, conformément aux pratiques locales. Utilisez uniquement des outils entièrement isolés conçus pour
l'entretien de la batterie.
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