The PI-1600 Circuit Breaker Test System incorporates modular design and flexibility to provide unequaled capability in a portable package. The PI1600 test set is two test sets in one. The PI-800 section can be used alone, on 120 or 240 VAC supplies, generating a continuous current of 400, 800, amps at 4.2 kVA, with a peak output of over 10x. When configured for the PI-1600 the PI-AUX output unit is connected in series or parallel to the PI800. The PI-AUX boosts total power to 9.8KVA and allows testing of draw-out breakers and MCBs to 1600 Amps. The units are housed in rugged interlocking suitcase-size enclosures. Each piece weighs no more than 125 pounds, allowing one-person hand truck mobility. Basic operation is very simple, and the proven MAC-21 instrumentation provides optimal output control and measurement. The MAC-21 instrumentation is supplied in a separate rugged portable case, interlocks on top of the PI800, and connects to a cable in the rear of the test set.
The PI-1600 consists of a strong aluminum frame, housed in a rugged plastic and aluminum enclosure with removable sealed front and back lids. Comfortable recessed side handles provide ease of handling and mobility. All controls, indicators, and input connections are on the front panel. The versatile 50 amp input plugs may be connected to heavy-duty portable cords for 120 VAC, 208 VAC, or 240 VAC. Individual leads may also be used to connect to bus work.
The output connections are on the rear, along with an auxiliary Output ON indicator, configuration switch. The bus stabs have pressed-in 3/8"-16 stainless steel threaded inserts, which eliminates the need for nuts, and the configuration bars are slotted for quick and easy changing for various breaker sizes.
The sixteen silver-plated output bus connectors allow configuration for continuous outputs of 1600 amperes at 4.2 VAC, and 800 amperes at 8.4 VAC, for testing molded case breakers with cables. The optional 1/2 inch stab bus assembly connected for 1600 amperes at 4.2 VAC, can be used for testing air draw-out breakers. Output stabs are designed with pressed-in 3/8"-16 stainless steel threaded inserts, which eliminates the need for nuts, and the configuration bars are slotted for quick and easy changing for various breaker sizes.
Applications
This test set will test low-voltage, molded-case and metal-clad, direct acting AC circuit breakers from various manufacturers. The test set can also be used on high current applications like ratio transformers, and heat runs.
Using SCRs the PI-1600 eliminates closing time errors. Initiation at the zero crossover point eliminates DC offset in the current waveform and results in accurate, repeatable test results even with short-duration currents for high-speed solid-state or electromechanical trip devices.
FEATURES
ETI's new voltage relay design protects the unit and its users from incorrect input voltages. Removable interconnect cables provide for easy storage, transport, and setup. Damaged cables are readily replaceable by users in the field, eliminating the need to remove units from service.
Initiating Control: The advanced initiate circuitry provides both pulses 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 be used for heat runs on cables or other devices up to a maximum of 9999 seconds.
Zero DC Offset: Use of digitally controlled SCRs 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.