Protec Equipment Resources
   Contact Us: 866.352.5550
    
blog-header

Recently Published Blogs

Protec Tech Team

Recent Posts

Selecting the Best Megger Time Domain Reflectometer that Meets Your Needs

by Protec Tech Team May 29, 2018

Time domain reflectometers are tools that can help make cable troubleshooting faster and easier. Instead of spending time and effort finding faults manually, these devices can localize the fault within seconds. These testers are especially valuable on cable installations that are several miles long. They are not only suitable for cable fault location in electrical systems but also in telecommunications, television and computer network facilities.

READ MORE >>

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.

READ MORE >>

What is a Secondary Injection Test Kit

by Protec Tech Team May 21, 2018

The protective devices that are used for the oversight and operational decision making in low voltage circuit breakers (LVCBs) are are often simply referred to as a Solid-State Trip device (SST).  They are essentially protective relays that are frequently an integrated part of a low voltage circuit breaker and monitor the primary current path of the circuit breaker.  In normal operation, these solid-state trip devices will sense changes in the primary current path and make the decision to open the circuit based on the magnitude and duration of the fluctuation. 

 

READ MORE >>

Rent the Megger SG32-1500M Power Cable Fault Locator from Protec

by Protec Tech Team May 21, 2018

The Megger SG32-1500M Power Cable Fault Locator is a portable cable fault location and high voltage test system designed to provide quick, effective, accurate and safe fault location, thereby reducing system outages and time lost.

Contact Us Now

The Megger SG32-1500M is housed in a rugged yet portable enclosure, which makes it suitable for use in and outdoor conditions.

READ MORE >>

Doble's Single Phase Relay Test Sets

by Protec Tech Team May 15, 2018

Relays play a critical role in the protection of electrical power systems. They are used to monitor and control the operation of power system components.  For example, if a protective relay were to senses a fault condition, it could tell a circuit breaker or some other protective device to open and thereby isolate the faulted portion of the circuit.  

READ MORE >>

Questions About VLF Hipot Tests

by Protec Tech Team May 15, 2018

We find there are often plenty of questions from readers about the differences between VLF, AC and DC hipot testing methods. And of course, plenty of arguments surround whether DC testing should be performed or completely replaced by VLF testing. 

READ MORE >>

When Testing Differential Protection Relays Trust the Omicron CMC 356

by Protec Tech Team May 07, 2018

Relays take abuse during normal operation, so it is important to always check their condition. Regular checkups will negate problems before they worsen, or even start.

READ MORE >>

The Importance of Protective Relay Testing

by Protec Tech Team May 07, 2018

The Doble F6150e Relay Testing System offers the ability to perform in both;

READ MORE >>

Performance Testing with DC and VLF Hipots

by Protec Tech Team May 01, 2018

When it comes time to test substations or medium voltage insulation testing, both DC Hipot and VLF Hipot technologies are can be uniquely helpful in their applications. 

READ MORE >>

Understanding the Applications of VLF and DC Hipots

by Protec Tech Team May 01, 2018

Hipot testing is a stress test to determine the reliability of insulators and helps identify bad components. There are different high potential testing technologies available and it is important to understand the proper use of each. Using the wrong method can degrade or even cause an electrical component to fail.

READ MORE >>

Proper Hipot Tests for Field-Aged and New Cables

by Protec Tech Team May 01, 2018


High potential testing is conducted to determine if the cables can withstand  normal operating voltages as well as over voltage conditions. There are specific tests suitable for field-aged cables as well as for newly installed cables. It is important to conduct the appropriate test in order to obtain as much information regarding the electrical health of the insulation without imposing detrimental effects in the process. Improper testing can lead to unexpected expenses and delays.

READ MORE >>

Detect Problems with Electrical Connections using a DLRO

by Protec Tech Team April 30, 2018

The resistance of an electrical connection increases over time due to temperature, cycling, and other environmental stresses. The degradation of these connections can result in excessive losses due to heating and operability issues . Periodic testing of contact resistance and/or other electrical bonds can help to identify changes in the condition of contacts and other electrical connections.

READ MORE >>
Bolt-Rule-b.jpg

Protec Equipment Resources Inc.
National Headquarters
1517 West Carrier Pkwy
Suite 116
Grand Prairie, Texas 75050

Phone: 972.352.5550
Fax: 972.352.5553

Become a Protec Insider