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Circuit Breaker - Primary Current Injection and Vacuum Bottle Testers

For any electrical system the testing of circuit protection devices is critical to ensure safety and security. Primary and secondary current injection are two approaches when testing circuit breakers. Primary current injection testing involves injecting the actual current required to operate the protective device through the circuit breaker.

Primary injection testing requires specialist injection test sets particularly in high power applications. Electro Rent provides a full range of primary current injection test equipment from suppliers including ETI, Megger, and Multi-Amp.

With Electro Rent’s flexible acquisition options you can rent, lease or purchase primary current injection testers to meet your short and long-term needs.

ETI Circuit Breaker Test Set

ETI Circuit Breaker Test Set

  • Versatile and technologically advanced primary current injection test set capable of testing circuit breakers up to 6000 amperes continuous
  • Input: 240VAC (reduced output) 480VAC , 50 or 60Hz
  • Tests low-voltage, molded-case, and metal-clad, direct acting AC circuit breaker from various manufacturers. Can also be used on high current applications and heat runs
  • Using SCR’s, the P1-6000 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 high speed, short duration currents
  • Programmable output phase angle with SCR controller
  • Motorized vernier with manual override for fast adjustment
  • Preset ON times for convenient jogging of output currents
  • Rugged solid copper Universal & Horizontal ½” & ¾” Output Stabs
Megger Circuit Breaker Tester

Megger Circuit Breaker Tester

  • Fully compliant NEMA AB-4 circuit breaker test set capable of testing circuit breakers up to 6000 amperes continuous
  • Input: 480VAC, 50 or 60HZ
  • Designed specifically to test all low-voltage power and molded-case circuit breakers equipped with thermal, magnetic or solid-state trip devices
  • Ideally suited for industrial, utility, and testing service company use
  • Use of digitally controlled SCR’s to initiate output of the test set eliminates closing time error and ensures precise initiation of the output current waveform every time
  • Accurate, repeatable test results are ensured even with currents of very short duration, as when conducting tests of instantaneous or short-time delay trip elements
  • The digital control of the SCR’s also allows the unit to initiate at any point within 90 degrees of the zero crossover point of the output-current waveform. This will allow the elimination of the DC off-set caused by a change in impedance of the varying loads
Megger Circuit Breaker Tester

Megger Circuit Breaker Tester

  • Portable, fully compliant NEMA AB-4 circuit breaker test set capable of testing low-voltage power and molded-case circuit breakers up to 1600 amperes continuous
  • Input: 480VAC; 50 or 60 Hz
  • Ideally suited for industrial, utility, and testing service company use
  • Use of digitally controlled SCR’s to initiate output of the test set eliminates closing time error and ensures precise initiation of the output current waveform every time
  • Accurate, repeatable test results are ensured even with currents of very short duration, as when conducting tests of instantaneous or short-time delay trip elements
  • The digital control of the SCR’s also allows the unit to initiate at any point within 90 degrees of the zero crossover point of the output-current waveform. This will allow the elimination of the dc off-set caused by a change in impedance of the varying loads
  • Output of the test set is easily adjustable from zero to the maximum current available through the impedance of the device under test
  • Test set may also be used for other high-current applications, such as verifying the ration of current transformers and performing heat runs or primary injection testing of high-voltage breakers and their associated protective relays
  • Output of the test set is easily adjustable from zero to the maximum current available through the impedance of the device under test
  • Test set may also be used for other high-current applications, such as verifying the ratio of current transformers and performing heat runs or primary injection testing of high-voltage breakers and their associated protective relays
ETI Portable Circuit Breaker Test Set

ETI Portable Circuit Breaker Test Set

  • Portable circuit breaker test set rated 9.8KVA continuous for testing up to 1600 amperes
  • Input: 120VAC (reduced output), 208-240 VAC (+/- 10% Switch Selectable); 50 or 60 Hz
  • Tests low-voltage, molded-case, and metal-clad, direct acting AC circuit breaker from various manufacturers. Can also be used on high current applications and heat runs
  • Using SCR’s, the P1-1600 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.
  • Selectable output connections to accommodate various impedance loads
  • Variable pulse times for convenient preset output current
Multi-Amp Circuit Breaker Test Set

Multi-Amp Circuit Breaker Test Set

  • High-current primary current inject test set suitable for testing molded-case circuit breakers, thermal, magnetic or solid-state motor overload relays and other overcurrent protective devices up to 500 amp frame size
  • Input: 208 and 240VAC; 50 or 60Hz
  • Time-delay characteristics of motor overload relays and molded-case circuit breakers rated up to 500 amperes can be tested when using the recommended test procedure of testing the time delay of thermal devices at three times their rating
  • Higher currents are available for the short duration required to test an instantaneous trip element up to 5000 amperes though a typical 500 amp, molded-case circuit breaker
  • Features include digital memory ammeter, digital multi-range timer, and solid-state output initiate circuitry which eliminates need for contact maintenance
  • Additional applications include verifying the ratio of current transformers and testing ground-fault trip devices
Multi-Amp Circuit Breaker and Overload Relay Tester

Multi-Amp Circuit Breaker and Overload Relay Tester

  • Primary current injection test set designed to test high-current circuit breakers, over-load relays and ground-fault trip devices up to 225 amp frame size
  • Input: 115VAC, 50 or 60Hz
  • For use in calibration of magnetic overload relays, such as those used for air-conditioning systems by providing up to 1000 amperes to simulate overload conditions and is also capable of testing the time-delay characteristic of magnetic overload relays rated up to 500 amperes
  • Time-delay characteristics of molded-case circuit breakers rated to 225 amperes can be tested when using recommended test procedure of testing the time delay of thermal devices at three times their rating
  • Higher currents are available for the short duration required to test an instantaneous trip element up to 1800 amperes through a typical 225 amp, molded-case circuit breaker
  • Features include digital memory ammeter, digital multi-range timer and solid-state output initiate current
  • Additional applications include verifying the ratio of current transformers and testing panelboard ammeters and voltmeters
Megger Primary Current Test Set

Megger Primary Current Test Set

  • Lightweight, portable high-current primary current injection overcurrent relay test set for testing molded-case circuit breakers, thermal, magnetic and solid-state motor overload relays, ground-fault trip devices and overcurrent relays up to 125 amp frame size
  • Input: 120VAC; 50 or 60Hz
  • Time-delay characteristics of molded-case circuit breakers rated to 125 amperes can be tested when using recommended test procedure of testing the time delay of thermal devices at three times their rating
  • Higher currents are available for the short duration required to test an instantaneous trip element up to 750 amperes though a typical 125 amp, molded-case circuit breaker
  • Ideal for testing ground fault protection devices with window CT’s. NEC230.95C requires specific ground fault devices be performance tested when initially installed
  • Commonly used by many utilities and service companies as an economical, lightweight overcurrent relay test system
  • Features include digital memory ammeter and digital multi-range timer
  • Additional applications include verifying the ratio of current transformers and testing panelboard ammeters and voltmeters
Vanguard Vacuum Bottle Tester

Vanguard Vacuum Bottle Tester

  • Lightweight, portable, micro-processor based, 80kV DC vacuum bottle tester
  • Input : 90-240VAC; 50 or 60Hz
  • Test voltages can be selected from 10 to 80 kV DC in 1 kV increments
  • Automatic testing with selectable test time duration from 5 seconds to 2 minutes
  • Built-in 2.5” thermal printer
  • Stores 84 records (of 16 readings each)
  • Failure indicator LED
  • Furnished with a 10’ test cable with a quick-disconnect test clip