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Recently Published Blogs

When Testing GE M-PACT Plus Circuit Breaker, M-PRO Test Box is a Must

by Protec Tech Team July 14, 2016

Now available for rent from Protec, the GE M-PRO Test Box, is a must have when testing the health and configuration of the GE M-PACT Plus Air Circuit Breaker.

The GE M-PRO Test Box is used as a means of powering up an M-PRO Plus Protection Relay - Electronic Trip Unit, simulating faults by secondary injection or for performing a forced trip of the breaker.

M-PACT Plus breaker will be in the test mode while M-PRO Plus is connected to the Test Box through the test connector.

Connect the Test Box to the M-PRO Plus via the front panel 26-pin connector using a 15-pin to 26-pin converter.
Do not test the M-PRO Plus with the charger still connected, as this will disable power to the M-PRO Plus.

The GE M-PRO Test Box may be used as a simple power box to facilitate viewing of faults (e.g. after a trip) or the
history of trips.


Rent ABB Electrical Test Equipment from Protec Today

by Protec Tech Team May 10, 2016


MadTest Instruments DSM4i1 Adapter Now Available for Rent from Protec

by Protec Tech Team May 10, 2016

When testing and verifying the pickup levels and time delay settings of Amptector, Digitrip, RMS or Optim trip units. the Eaton Cutler Hammer 140D481G03 Secondary Injection Test Set is used.  However, in the past the Eaton Cutler Hammer 8779C02G03 DS / DS II Adaptor, the Eaton Cutler Hammer 8779C02G04 Magnum Adaptor and the Eaton Cutler Hammer PRTAAPM Auxiliary Power Module have been in short supply and not easily available.


Rent the General Electric VersaTrip Circuit Breaker Tester from Protec

by Protec Tech Team February 15, 2016

The General Electric VersaTrip Circuit Breaker Test Set is a rugged, light weight, port­able instrument designed to test the electronics package used with VersaTrip circuit breakers.

The test set may also be used to test the electronics package used in circuit breakers for Fire Pump Con­troller Applications.


Test Static Trip I, II, & III Trip Units with the Siemens PTS-4

by Protec Tech Team February 15, 2016

Test Static Trip I, II, & III trip units used on the LA and RL line of low voltage power circuit  breakers with the Siemens PTS-4 (PTS4) Secondary Injection Test Set.

The test set provides a means of testing the magnetic tripping  actuator as well as the trip unit. The portable test set, using power from an ordinary 120 volt convenience outlet, can provide circuit breaker testing equivalent to much more expensive and cumbersome primary current testing. 

With the  Siemens PTS-4, Static Trip III trip devices can be tested by themselves, or on a circuit breaker outside the cubicle, or inside the cubicle with the breaker in the TEST or DISCONNECTED position.A circuit breaker is provided in the PTS4 test set to prevent thermal damage from repeated high current tests.


ABB TS3 Trip Unit Test Set Electrical and Environmental Features

by Protec Tech Team January 21, 2016

High quality, accuracy and reliability are key features for ABB low voltage circuit-breakers ABB SACE means quality and innovation in the low voltage world.


Run Secondary Injection Tests on Trip Units with the Square D S33595

by Protec Tech Team December 07, 2015

The most typical protective devices installed are overload, over current, reverse power, earth fault, differential proportion etc. Injection tests are carried out to check the operation of these protective relays and the breakers. There are two types of injection tests that are normally conducted – primary injection test and secondary injection test. Primary injection test is conducted by injecting the current that is required for the operation of the protective device power through a circuit breaker. The secondary injection test, on the other hand, is conducted when the circuit breaker, though closed is not carrying any current through the main poles.


Rent the Allen-Bradley 140G-ELTT Trip Test Unit from Protec

by Protec Tech Team November 09, 2015

Regular testing and maintenance of circuit breakers and relays is necessary when dealing with sophisticated electrical systems.


Rent the Utility Relay Co. B-291-MP or B-292 for Secondary Injection Tests

by Protec Tech Team September 11, 2015

Defective circuit breakers can allow extensive damage, personnel injury, or make an outage more widespread when a fault occurs. They can also trip when they shouldn’t causing expensive downtime.


Reliable Secondary Injection Testing with Utility Relay Co. Test Sets

by Protec Tech Team August 21, 2015

For checking circuit breaker and protective relay systems, a secondary injection test set is the main piece of electrical test equipment to use. It differs from the standard primary injection testing method in that there is no current flowing and contacts remain closed during the testing process.


Rent the Siemens PTS-5 Secondary Injection Test Set Today from Protec

by Protec Tech Team July 10, 2015

The Siemens PTS-5 Secondary Injection Test Set is designed for performing secondary injection testing of the Static Trip III (STIII) overcurrent tripping system utilized on the RL breaker. The system is packaged in a self-contained case and requires 120VAC to operate.

The Siemens PTS-5 contains a microprocessor controlled constant current source which enables rapid verification of the performance of the STIII.


Test Amptector, Digitrip, RMS or Optim Trip Units with Eaton Cutler Hammer 140D481G03

by Protec Tech Team June 22, 2015

A circuit breaker is a manually or automatically operated electrical switch designed to protect an electrical circuit from damage caused by overload or short circuit. Its basic function is to detect a fault condition and interrupt current flow. In addition to providing a means to open and close its contacts manually, a circuit breaker must automatically open its contacts when an overcurrent condition is sensed.


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