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DLRO Test for Circuit Breakers

Megger DLRO10HD 10A Digital Low Resistance OhmmeterWith the continuous evolution in all industries, everything has become more dependent on electrical devices and systems. This increasing dependence calls for certain steps to ensure reliable and consistent functioning of the devices. This is why most companies carry out regular testing and diagnosis of electrical devices and systems using high quality, efficient, and reliable electrical test equipment.

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A circuit breaker is an important component of the electrical system which is used to interrupt the current if, and when a fault were to occur. If the circuit breaker fails to interrupt fault current in an overload condition, the entire system can suffer severe damage as a result. Thus, regular diagnosis of circuit breakers is very important.

After several usage cycles, the circuit breakers can begin to develop pitting or develop a conductive residue on the contact surfaces. Although circuit breaker technologies as well as maintenance practices continue to change and to evolve, that may not be sufficient. The amount of carbon deposit on the contacts can be estimated by measuring the resistance between contact surfaces. Testing with a DLRO can be used to verify if low resistance readings are within the technical specification of the manufacturer, or industry standards. The other electrical and mechanical problems can be diagnosed by using addition test equipment to verify the health of insulation and electrical operational characteristics of the circuit breaker.

Related electrical test equipment available for rent from Protec:

Megger DLRO10HD 10A Digital Low Resistance Ohmmeter

Megger DLRO600 600A Digital Microhmmeter

Megger DLRO200-115 200A Digital Low Resistance Ohmmeter

Megger MOM2 200A Microhmmeter

This electrical test equipment is available for rent, lease, or purchase from Protec Equipment Resources. We are here to help you with your testing equipment needs.

Wherever the job takes you (and the equipment), with Protec’s multiple locations, we always ship from the office closest to your desired drop location (if the electrical test equipment you need is in-stock at that location), and the equipment can be returned to the nearest office.

We always consider ALL shipping options in order to save you the most time and money.

Also, if you happen to be close to one of our many office locations, walk-ins are always welcome!

Rely on the Electrical Test Equipment Rental Experts, we are there when and where you need us.

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Editor’s Note: This post was originally published May, 2013 and has been updated freshness, accuracy and comprehensiveness.