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Recently Published Blogs

Testing Insulation Resistance Using Megger Test Equipment

by Protec Tech Team November 14, 2018

Insulation plays a very important role in an electrical system. Without electrical insulation, the electricity flowing in the conductors is exposed to short circuit to other conductors or create the risk of electrocution to personnel. It is important to always check the integrity of insulation to ensure the safety and reliability.

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DC Tests for Circuit Breakers

by Protec Tech Team July 25, 2018

Circuit breakers are used everywhere – in our homes, offices, and electric facilities. The degradation of the electrical insulation that is an integral component of these protective devices, can be influenced from both environmental and operational stresses. Additionally, oxidation and ware of circuit breaker contacts can lead to relatively high resistance connections and overheating of the circuit breaker.  In the worst case, contacts can become welded together, thereby defeating the protective intent of the circuit breaker. This is why it is important to utilize the proper electrical test equipment when testing, to ensure that the circuit breaker is properly fulfilling its intended purpose. 

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Can Using a Megger Meter be Destructive?

by Protec Tech Team July 16, 2018

Megger (insulation resistance tester) is a type of electrical test equipment used to verify the effectiveness of insulation to act as a barrier between energized conductors, or between energized conductors and ground. It is critical to the reliability of the electrical power system that there is a way to know when insulation has been damaged or compromised in any way.

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Choose the Megger Insulation Tester That is Right for You

by Protec Tech Team July 10, 2018

Contact Us NowTesting electrical insulation can be quick and easy when using test equipment specifically designed to perform insulation resistance measurements. A good insulator should have a very high resistance to current flow.  Factors such as temperature, electrical and mechanical stresses, weather and moisture ingress are all capable of adversely impacting the characteristic qualities of materials that make them such good insulators. The degradation of these materials over time can result in unplanned outages, safety concerns for personnel and an overall degradation of power system reliability.  

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Avoid Dangerous Accidents by Conducting a Megger Insulation Test

by Protec Tech Team July 10, 2018

An insulation resistance test is conducted to examine the effectiveness of insulation in a variety of electrical power system apparatus. Faulty electrical insulation is the source of dangerous shock hazards and can often cause ancillary damage to adjacent equipment as well. Routine electrical testing and maintenance can help to identify when insulation has deteriated before it reaches the point of failure, saving the expense of repairs and unplanned outages. 

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The Basics of Dielectric Absorption Test

by Protec Tech Team May 29, 2018

The dielectric absorption ratio is the ratio of two time-resistance readings such as a 60-second reading divided by a 30-second reading.  If the ratio is a 10-minute reading divided by a 1-minute reading, the value is called the polarization index. The principle behind the test is that the resistance would increase with time as the capacitive and polarizing currents begin to subside.

Unlike spot tests that are relative to specific conditions such as temperature each time that the test is performed, ratios of insulation resistance (Dielectric Absorption Ratio) that are taken at essentially the same time and temperature require no correction factor for comparison purposes.

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Megger Insulation Resistance Testers Provide Valuable Diagnostic Data

by Protec Tech Team January 31, 2018

Megger MIT1025 10kV Insulation Resistance TesteInsulation testing can be divided into two method categories:

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For the Most Accurate Capacitance Testing Equipment Rely on Protec

by Protec Tech Team October 18, 2017

The purpose of electrical insulation is to store electrical energy when surrounded by an electrostatic field.

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Protec Offers Range of Insulation Resistance Test Equipment for Rent

by Protec Tech Team July 25, 2017

Electrical current flowing through a conductive wire should reach its intended destination. However, it is possible that some of the current may be lost along the way for various reasons.

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Reliably Test Insulation Resistance with Megger MIT1025 Rental

by Protec Tech Team January 25, 2017

When evaluating the reliability of insulation, the Megger MIT1025 10kV Insulation Resistance Tester can be used to measure quality control at the time a piece of electrical equipment is produced, periodic preventive maintenance, and as a troubleshooting tool.

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The Megger MIT1025 offers such advanced features as:

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Rent Megger's MIT430-TC2 When Testing Insulation Resistance

by Protec Tech Team December 07, 2016

The Megger MIT430-TC2 Insulation Resistance and Continuity Tester is designed specifically for use within the telecommunications industry.

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AEMC 1026, A Digital Megohmmeter with Numerous Appplications

by Protec Tech Team December 01, 2016

Megohmmeters are design to measure very high resistances usually greater that 1 MegOhm or 1,000,000 Ohms. 

They are used to measure the resistance of insulating materials and to determine at what voltage the insulation will "break down" and allow a current to flow through it. 

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