Electrical Test Instruments PI-6000
Section II - Detailed Description
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Copyright(C) 1994-2019 Electrical Test Instruments, LLC All Rights Reserved
Page II-1
INTRODUCTION
A primary injection test set such as the PI-6000 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 simulate 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
The PI-6000 is a versatile and technologically advanced primary injection test
set capable of testing circuit breakers up to 6000 amperes frame size. It
incorporates 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 enclosure with removable sides and top for easy
access to internal components. The sides are clear of protruding components,
and full-width handles with provisions for lifting hooks are on both ends.
Locking swivel castors on all four corners provide ease of mobility.
The indicator control panel and MAC-21 are mounted in a compact hood with a
hinged lid on the top, which provides maximum protection during
transportation and a large flat area on the top surface for convenient placement
of manuals, breaker curve books, and auxiliary instruments. A hinged access
panel in the back of the hood provides a storage area for manuals, contact leads,
fuses, and other small items. The auxiliary 120 VAC GFI protected outlet is
conveniently located on the side of the hood and protected by an 8-ampere
circuit breaker.
The output stab plates accommodate standard breaker stab adaptors. 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.
An optional series adaptor assembly allows the output to be configured for
continuous current of 2000 amps at 22 VAC for testing breakers that require
connection via cables. An automatic sensor 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
