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Vanguard Test Info: Why Use a DLRO (Digital Low Resistance Ohmmeter)?

Vanguard Auto-Ohm 100 100A Micro-OhmmeterIf you are reading this blog, it might be because it is time to break out a Micro-Ohmmeter to ensure the reliability of electrical connections throughout your electrical power system. The Vanguard Auto-Ohm is the ideal tool to use when evaluating the integrity of electrical bonds to power system equipment, as well as the contact resistance within the electrical equipment itself.  

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The Vanguard Auto-Ohm is typically used to identify high resistance connections wherever electrical apparatus are bonded to the electrical system. These connection will sometimes become compromised due to mechanical, chemical, and thermal stresses.  Additionally, power systems are designed utilizing protective devices such as circuit breakers and circuit switchers to conduct electrical energy in the course of normal operation, or to interrupt the flow of electricity and isolate a circuit in fault conditions. Contacts within electrical apparatus can deteriorate when contaminants collect on the surface materials, or pitting occurs as a result of interrupting current flow in energized circuits. These conditions can create and environment conducive to excessive arcing and will manifest themselves in high contact resistance values.  These measurement values can be indicative of the deterioration of electrical contacts. Faults that occur as a result of high resistance connections can be mitigated by a regular preventative maintenance program that incorporates test equipment such as the Vanguard Auto-Ohm

If left unattended without preventative testing and maintenance, a high resistance connection can lead to excessive heating, electrical losses and eventually a faulted circuit.

To avoid further damage and possible injury to workers, co-workers, employees and others, equip your electrical testing program with Vanguard test equipment. This not only offers the potential for reducing replacement and repair cost for electrical apparatus as the result of a preventable fault, but the downtime associated with such preventable faults.

Find the Vanguard brand of ohmmeters as well as other quality manufacturers of test equipment here at Protec Equipment Resources. We offer daily, weekly, monthly and long term rental of equipment with on time delivery and free calibration. Give us a call today.

Related electrical test equipment available for rent from Protec:

Vanguard Auto-Ohm 100 100A Micro-Ohmmeter

Vanguard Auto-Ohm 200 S3 200A Micro-Ohmmeter

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 November, 2011 and has been updated freshness, accuracy and comprehensiveness.