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The HE300-15 surge arrestor is
the first line of protection for the
electronic equipment in a traffic
controller cabinet.
This unit is a two-stage arrestor
which can be used as a stand-alone
device or in conjunction with an
external line filter if required.
Because the primary and secondary
stages are electrically separated
(line side), the addition of an
external filter (HESCO/RLS model
LF35, LF50 or LF60) is simple and
quick.
The primary stage is designed to
dissipate high-energy surges on the
AC powerline of 46KA (8x20uS) while
clamping at a nominal 480 volts. The
primary stage provides protection
from line to neutral, line to ground
and neutral to ground. This feature
becomes quite important at site
locations where neutral must be kept
isolated from earth ground inside
the controller cabinet.
In addition to the primary
stage’s capability to sustain
multiple surges of 46KA (8x20uS),
the secondary stage is designed to
sustain surges in excess of 20KA
(8x20uS) at a clamp voltage of 340
volts.
The HE300-15 surge arrestor is
one of the most powerful hybrid
surge arrestors available today.
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