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Recently Published Blogs

The GE TVTS1 Secondary Injection Test Set, Available from Protec

by Protec Tech Team July 03, 2019

If your electrical system contains circuit breakers that are controlled by GE MicroVersa Trip Solid State Trip devices, electrical operational testing can easily be performed using the General Electric TVTS1 Secondary Injection Test Set which has features to effectively test these breakers.

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MicroVersaTrip units are modern circuit breaker trip devices that replace old electromechanical protective devices. Unlike old circuit breakers that rely on the tension spring setting to determine at what level the breaker should interrupt the current, MicroVersa trip units feature digital circuitry to accurately monitor the power system's load conditions. This prevents the breakers from interrupting temporary overcurrent conditions caused by the inrush currents of startup processes etc. It also has an integrated metering and control features for easy calibration. GE offers a secondary injection test set designed to effectively test MicroVersa trip units. Its TVTS1 circuit breaker test set features 2 modes for testing the programmer or the complete trip unit. This lets you do a partial and full diagnostics on the trip device that controls circuit breaker operations.

If you are interested in the GE TVTS1, you can check it out at Protec Equipment Resources. We lease and sell test equipment to cater to your needs. Our inventory carries a wide range of low and high voltage diagnostic equipment from notable manufacturers. Contact us and browse our inventory for the tools you need.

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For Primary Injection Testing Rent the SMC Raptor C-05 From Protec

by Protec Tech Team July 03, 2019

The SMC Raptor C-05 Primary Injection Testing System is suitable for numerous test and measurement functions involving medium- to moderate current where the distance to the tested device is not a factor, as when testing MCBs or medium-sized MCCBs.

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Rent the Amprobe DM-5 Analyzer to Discover Power Quality Issues Quickly

by Protec Tech Team June 27, 2019

The Amprobe DM-5 Power Quality Analyzer allows for the easy and quick discovery of  source and magnitude characteristics related to power quality issues.

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Using the Doble M5200 SFRA for Testing Transformers Without Untanking

by Protec Tech Team June 27, 2019

Transformers will sometimes experience a lot of stresses related to the transformer being moved from one location to another, or when they experience the excessively high currents related to through fault conditions.

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Physical changes to the inner workings of a transformer result in altered electrical characteristics. When abnormal conditions such as these occur, it is important to check for signs of physical change or deformation of transformer components. You can use a Sweep Frequency Response Analyzer  to verify that Physical changes have not occurred inside the transformer without having to remove it from its enclosure.

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Control your F2000 Series Relay Test Set with a Doble F2010 Minicontroller

by Protec Tech Team June 20, 2019

relay test set is generally heavy and large because it needs to produce large currents to be able to simulate the operating conditions of relays. It would be easier to test relays if you could move around without carrying the whole test system.

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The Dranetz 314 Phase Angle Meter

by Protec Tech Team June 20, 2019

A Phase Angle Meter helps determine if metering, protective relaying devices and/or other power system apparatus are properly installed or configured.  Phase angle measurements can also be used in calculating other useful parameters such as power factor.

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Protective Relay Testing with Omicron CMC 356

by Protec Tech Team June 11, 2019

Using the Omicron CMC 356 Universal Relay Test Set and Commissioning Tool enables engineers to have advanced functionality right at their fingertips. Verifying correct wiring is a must for wires coming from cubical terminals to the relay, between instrument transformers and relays as well as between the testing equipment and relay.

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Megger Delta 2000 Power Factor Test Set

by Protec Tech Team June 11, 2019

When it’s time to assess the condition of electrical insulation in high voltage conditions such as transformer equipment, circuit breakers, cables, bushings and rotating machinery, there is no better solution than the Megger Delta-2000 Power Factor Test Set. Megger C & DF (Power Factor) test units are known for their comprehensive insulation diagnostics, and the Delta-2000 lives up to the Megger name.

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Merlin Gerin ME Secondary Injection Test Set

by Protec Tech Team June 05, 2019

With the critical role of circuit breakers, it is very important to periodically verify that they are performing as designed and intended. Numerous electrical circuits can potentially be compromised if a circuit breaker fails to trip when fault conditions occur. As with any new product, we expect it to work properly right straight out of the box. The unfortunate truth is that this isn't always the case.  The same is true about circuit breakers.

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This is why their proper operation should be verified as an acceptance test.  Additionally, circuit breakers experience environmental, mechanical, electrical and thermal stresses over the course of their service. A well planned preventative maintenance program can help in avoiding unplanned downtime and service interruptions due to what is often an avoidable mis-operation. Additionally, early detection of performance concerns can save on the cost of equipment repair and/or replacement. 

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Understanding Current Transformers – Part II Characteristics

by Protec Tech Team May 28, 2019

When looking at the accuracy of a CT a number of factors need to be taken into consideration.  These factors will include:

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Understanding Current Transformers – Part I Introduction

by Protec Tech Team May 28, 2019

Current transformers are a commonly used device found in metering and protective relay applications for the electrical power industry.  The purpose of these devices is to scale large primary currents to a smaller, easy to measure, secondary current.  The device also isolates the measuring and recording instruments.  Current transformers (CT) together with voltage transformers (VT) or potential transformers (PT) are known as instrument transformers.

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What Is the Advantage of VLF Hipot Testing?

by Protec Tech Team May 20, 2019

 VLF hipot —very low frequency hipot — is an AC high potential instrument used for testing the dielectric strength of insulating materials at 0.1 Hz or lower. Instead of having to perform DC testing because high potential test equipment that operates at power system frequency are large, heavy and therefore not very portable, VLF high potential testing  makes testing cables and electrical apparatus in the field more practical and economical. 

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