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 incorporates an improved low impedance output transformer with dual secondaries to provide optimal impedance matching to a wide range of breaker sizes.
The PI-2500 is a versatile and technologically advanced primary injection tester capable of testing circuit breakers up to 2000 amperes frame size. It incorporates a low-impedance output transformer with 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 aluminum frame enclosure with removable sides allowing easy access to all internal components to facilitate ease of service and maintenance. The output of the test set is controlled by means of a proven SCR controller. This provides precise initial phase angle control to 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 MAC-21 controller, which uses highly accurate A/D circuitry and intelligent firmware to resolve true-RMS values of distorted waveforms. 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.
This test set will test low-voltage, molded-case and metal-clad, direct acting AC circuit breaker from various manufactures. The test set can also be used on high current applications like ratio transformers and heat runs. 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.
Serial port: This standard serial port may be connected to a printer, computer, or other device to print or store time and current values of test results in ASCII format. It is set for 9600 baud, 8 bits, 1 stop bit, no parity. This interface enables you to download data into various computer software programs.
Initiating Control: The advance initiate circuitry provides both pulse preset modes for cycles or seconds for output duration. The pulse mode automatically pulses the output to any preset programmed duration. This provides additional testing capabilities for electromechanical and solid state trip devices. A short preset pulse duration also allows for instantaneous tripping without preheating the breaker under test. A long preset time can used for heat runs on cables or other devices up to maximum 9999 seconds.
Zero DC Offset: Use of digitally controlled SCR’s instead of a contactor to initiate the output of the test set eliminates closing time error and thereby ensures precise initiation at the zero crossover point of the output current waveform every time. Initiation at the zero crossover point ensures symmetrical output current by eliminating DC offset in the current waveform. Therefore accurate, repeatable test results are assured even with currents of very short duration, as when conducting tests of instantaneous or short delay trips.