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Recently Published Blogs

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.

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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.

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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.

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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.

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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.

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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.

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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.

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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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Protec Offers A Large Inventory Of Secondary Injection Test Sets

by Protec Tech Team May 19, 2015

For checking circuit breaker and protective relay systems, the secondary injection test set is the main piece of electrical test equipment for companies 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.

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Test Micrologic, NT and STR Trip Units with the Square D by Schneider S33595

by Protec Tech Team December 10, 2014

Methods of testing circuit breakers:

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Perform Tests on Micrologic, NT and STR Trip units with the Square D S33595

by Protec Tech Team October 29, 2014

Protective devices such as relays, overload coils and circuit breakers must be checked on installation and at regular intervals while in service to ensure that they are always ready to operate correctly if a fault should occur in the equipment that they are protecting. Routine testing will quickly detect faulty or incorrectly adjusted protection devices, and possibly prevent serious damage to equipment and injury to personnel. 

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Square D by Schneider S33595, a Full Function Secondary Injection Test Kit

by Protec Tech Team September 05, 2014

Secondary injection testing normally involves disconnection of the protective device from its normal VT/CT and connection to a specialist test set that can inject and measure/record the required operating signal directly into the protective device relay to cause it to operate the circuit breaker. The advantage of secondary injection testing is that the circuit breaker does not have to interrupt large current and only low voltage signals are injected to operate the device.

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