Arc Reflection Filters marry impulse generators to highvoltage
radars (time domain reflectometers, TDR),
providing fault locating crews with integrated systems to
meet all cable fault locating needs. Two models are
available:
- Standard Arc Reflection Filter (detachable):
designed to withstand 1,000,000 Joules/hour (continuous
operation with a standard impulse generator) and 50 kV
proof/burn voltage.
- Heavy-Duty Arc Reflection Filter (detachable):
designed to withstand over 3,000,000 Joules/hour
(continuous operation with a heavy-duty impulse
generator) and 70 kV proof/burn voltage.
Choice of an Arc Reflection Filter is dependent upon the
energy producible by the impulse generator with which it
will be used.
The Standard Arc Reflection Filter can be used with any
non-heavy-duty impulse generator. The Heavy-Duty Arc
Reflection Filter is used whenever the system includes a
heavy-duty style impulse generator (generates in excess of
1,000,000 Joules/hour and/or 70-kV proof/burn voltage).
The arc reflection filter, including its sturdy metal cabinet
of welded construction, and all its components are
designed to withstand the rough handling it will
experience in the field.
For operator convenience, a mode selector switch is
provided on the top control panel. When the selector
switch is set to ARC REFLECTION TEST, the arc reflection
filter network is connected to the cable under test. This
makes it possible for the operator to make either TDR tests
or arc reflection tests, as well as other tests requiring the
use of the filter.
When the selector switch is set to the PROOF/BURN/
IMPULSE mode, the filter is bypassed, allowing stand-alone
operation of the impulse generator system on impulse,
proof or burn.
A wide-band current transformer is permanently connected
electrically and mounted inside the cabinet for use with
the surge pulse. | 
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