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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INTRODUCTION
A primary injection test set such as the PI-2500 and PI-5000 is a device with
high current, low voltage AC outputs for testing direct acting low voltage circuit
breakers. Current is injected through the main contacts of the breaker to simu-
late actual fault conditions, which tests the operation of CTs, solid state, thermal,
or electromechanical trip devices, and the actual trip mechanisms and breaker
contacts.
GENERAL DESCRIPTION
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PI2500
The PI-2500 is a versatile and technologically advanced primary injection test
set capable of testing circuit breakers up to 2000 amperes frame size. It incor-
porates an improved low impedance output transformer with dual primaries to
facilitate its use on power sources of 480 VAC as well as 240 and 208 VAC, and
dual secondaries to provide optimal impedance matching to a wide range of
breaker sizes. High capacity internal fan cooling allows maximum utilization of
the output transformer and faster recovery after overload conditions.
It is housed in a rugged Steel frame enclosure with removable sides and top for
easy access to internal components. The sides are clear of protruding compo-
nents, and a full-width handle facilitates moving the unit. Locking swivel castors
on one end provide ease of mobility and allow the test set to be moved on rough
surfaces.
The indicator control panel and MAC-21 are mounted in a hood on the top,
which provides protection during transportation. The auxiliary 120 VAC GFI pro-
tected outlet is conveniently located on the side of the Hood and protected by
a 4-ampere circuit breaker.
The output stab connectors are slotted to accommodate special breaker stab
adaptor plates as well as being able to connect to the AUX-5000 for increased
output capacity. The rugged silver-plated copper stab adaptors supplied with
the test set are designed to be used for both vertical and horizontal stabs and
have both ½” and ¾” output plates. Standard ½”
-13 stainless steel hex head
bolts with matching nuts and washers are used to connect the output stab
plates, and they may be replaced easily.
A series adaptor bar allows the output to be configured for continuous current
of 1000 amps at 15 VAC for testing breakers that require connection via cables.
A configuration switch on the output faceplate adjusts the internal CT output
for proper readings in either configuration.
The test set may be plugged into any 60 Hz AC voltage source of 200-250 VAC
or 400-500 VAC, and will work on 50 Hz sources of 200-210 VAC or 400-420 VAC.
