Ground Fault Protection; Enclosure Safety Issues; Emi/Rfi Statement - Multilink EP 1100 Installation & Operation Manual

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 ap-
propriate mounting hardware in accordance with local codes and construction practices.
The power supply must be installed within a NEMA 3R enclosure or any 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 tempera-
ture 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.
Fig. 1-1 Typical DOT/ITS Power Supply Enclosure

EMI/RFI Statement

This device has been designed and manufactured to comply with the EMI / RFI emission limits and immu-
nity characteristics as set forth in Standards EN 55022 and EN 55024. These limits are designed to provide
reasonable protection against harmful interference when this equipment is operated in a commercial en-
vironment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed in
accordance with this instruction manual, may cause harmful interference to radio communications.
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