Electrical Test Instruments PI-2500-G2 and PI-5000-G2
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Copyright (C) 1994-2021 Electrical Test Instruments, LLC. All Rights Reserved
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reduce DC offset for inductive loads and more consistent pulse currents. The
phase angle is internally adjustable and is preset for optimal waveforms with
most breakers.
The measurement of output current and time is accomplished by means of the
proven MAC-21, which uses highly accurate A/D circuitry and intelligent firm-
ware to resolve true-RMS values of distorted waveforms. It also provides features
such as preset ON times for convenient jogging of output current without over-
heating the breaker or causing unwanted trips.
The entire test set has been designed for reliability, ruggedness, and ease of use.
Sophisticated electronics in the indicator/control panel and the MAC-21 provide
state of the art accuracy and convenience, while simple connections allow for
easy removal and replacement for transportation or service. All covers are re-
movable, allowing easy access to all internal components. An internal relay
panel located just under the top panel contains most of the circuitry, facilitating
service and maintenance. The rear panel may be removed for access to input
fuses, control fuses, and the SCR board. A fan with air filter provides airflow to
the transformer and output bus. The cabinet is designed with no protruding
components on the sides, so it can be navigated through narrow doorways
without problems.
The reduced length and width of the test set allows it to be maneuvered in tight
spaces and it can be lowered into a shaft 26” x 30”, or a manhole 40” diameter.
Provisions have been made on the bottom of the frame for a lifting sling to be
attached without slipping from the corners.
GENERAL DESCRIPTION
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PI5000
The PI-5000 is composed of the PI2500 as described above, and the AUX-5000
auxiliary output unit, which when combined gives the unit the capability of
testing 4000 ampere breakers, with essentially the same specifications as the
proven PI-4000B. The unit is smaller than the PI4000, so it can also be maneu-
vered easily in tight spaces or lowered into shafts and manholes that would
not be possible with a larger single piece unit.
The AUX-5000 is easily attached to the PI-2500 by means of Vertical bus bars
with stainless steel socket head cap bolts and sturdy nut plates. The AUX-5000
is simply rolled into place to mate with the PI-2500, and then the Bolts are
tightened.
The main electrical power and ground connections to the AUX-5000 are
housed in 1 amphenol connector.
The output of the AUX-5000 is identical to that of the PI-4000B, and accom-
modates standard breaker stabs, for continuous output of 4000 amperes. It
can also be configured in series mode for a continuous output of 2000
