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Recently Published Blogs

Recently Added to Protec's Rental Inventory - Raytech CT-T1 CT Tester

by Protec Tech Team September 20, 2017

The Raytech CT-T1 is a microprocessor-based Current Transformer Tester that measures CT excitation current, ratio, and winding polarity tests, all without having to switch the leads during testing.

This CT Tester is precision-made, fully automatic, portable, and built to stand up to the harsh environments of field testing.

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For High Voltage Maintenance and Acceptance Testing, Rent Raytech

by Protec Tech Team June 06, 2017

Used for maintenance and acceptance testing of electrical high voltage apparatus, Raytech USA equipment offers a unique design approach resulting in the development of highly regarded measuring instruments which have set new standards in the electrical testing industry.

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High accuracy, and extremely durable, these portable instruments are housed in durable and rugged cases designed to withstand shocks, vibration, and mishandling associated with factory and field-testing.

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Rent the Raytech WR50-12 for Winding Resistance Measurement

by Protec Tech Team November 16, 2016

The Raytech WR50-12 Two Channel Winding Resistance Test Set is a 50 Amp, 2 Channel Winding Resistance Meter with Demagnetization and Discharge. The unit features a pure, filtered DC power source for the highest accuracy readings of any high current test system.

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Perform Precision Measurements With Raytech TR-Spy TTRs

by Protec Tech Team November 02, 2015

The Raytech TR-Spy family of TTRs have quickly become recognized as the World's most advanced Three Phase Transformer Ratiometers.

A rugged, lightweight instrument that automatically measures Turns Ratio, Voltage Ratio, Excitation Current, Phase Relationship, and Phase Displacement, the Raytech TR-SPY Mark II Three Phase TTR (Transformer Turns Ratio) is a fully automatic instrument that can perform precision laboratory measurements, as well as function extremely well in the field for routine maintenance testing.

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Measure Connections, Contacts and Control Circuits with the Raytech WR14

by Protec Tech Team October 02, 2015

Prior to modern digital electronic equipment, the Kelvin Bridge was used to measure winding resistance. Batteries, switches, galvanometers, ammeters and slidewire adjustments were used to obtain resistance measurements. With modern microprocessor based test equipment testing times have been greatly reduced. Direct readings are available from digital meters with automatic indications telling when a good measurement is available.

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Raytech WR50-12 for Precise Winding Resistance Measurements to 50 A

by Protec Tech Team September 01, 2015

The Raytech WR50-12 Two Channel Winding Resistance Test Set measures the resistance of highest inductivities in the shortest amount of time with its innovative charge and discharge circuits.

Offering a simple one-button core demagnetization the  Raytech WR50-12 Two Channel Winding Resistance Test Set can be used following a DC winding resistance test, or at any time. 


Raytech WR50-12 Two Channel Winding Resistance Test Set is designed for a high degree of accuracy for the measurement of very low resistance of inductive loads.

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Measure Low-Resistance with Test Equipment from Protec

by Protec Tech Team July 28, 2015

An electronic device that measures electrical resistance, ohmmeters come with different levels of sensitivity; some are designed to measure low-resistance materials, while others measure higher resistance.

An ohmmeter functions by passing a constant current or voltage though an object, such as voltage from a battery, and then measuring the resulting current with an ammeter after it passes through the resistance. The higher resistance the material has, the less current will pass through it. An ohmmeter is typically not used to measure resistance across an entire circuit, but rather through different parts of the circuit, although it can be used to test that a circuit is not broken. Components of a circuit can be removed and tested individually for resistance.

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Rent Raytech Precision Electronic Measuring Instruments from Protec

by Protec Tech Team June 04, 2015

The unique design approach of the engineering team at Raytech USA has resulted in the development of highly regarded measuring instruments which have set new standards in the electrical testing industry.

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Raytech Micro Centurion Offers Wide Range Of Features to Measure Low Resistance

by Protec Tech Team June 02, 2015

Raytech Micro Centurion II 200A Precision Micro-Ohm Meter (ductor) is a vital tool used in electrical troubleshooting. Allowing the measurement of extremely low resistance and the detection of minute resistance changes, the Micro-Ohm Meter offers a wide range of features for effective low resistance measurement.

The Raytech Micro Centurion II features a pure filtered DC power supply to ensure that it only gives clean power with minimal ripple. The Micro-Ohm Meter has a current output of 200 Amperes which allows it to measure resistance accurately from 0.01 Ω up to 5 Ω. An automatic internal diagnostics and calibration system allows for accuracy every time. You can attach the Raytech Micro Centurion II to a computer using its Centronics port or through its RS232 serial port for remote diagnostics. With rugged construction that allows the Micro-Ohm Meter to tolerate drops as high as 1 meter without damage, this ductor is suitable for field and industrial use.

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Rent Always Reliable Raytech Winding Resistance Test Sets from Protec

by Protec Tech Team April 20, 2015

Winding resistance measurements in transformers are important for the following purposes:

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Raytech Micro Centurion II 200A a Precision Micro Ohm Meter You Can Rely On

by Protec Tech Team February 03, 2014

Micro ohm meters are devices that allow technicians to accurately measure junction resistance of conductors like circuit breaker contacts, bus bar connections and electrical terminals.

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Raytech Micro Centurion II Offers Wide Range of Features for Low Resistance Testing

by Protec Tech Team October 15, 2013

Raytech Micro Centurion II 200A Automatic Digital Low Resistance Ohmeter Raytech Micro Centurion II 200A Precision Micro-Ohm Meter (ductor) is a vital tool used in electrical troubleshooting. Allowing the measurement of extremely low resistance and the detection of minute resistance changes, the Raytech Micro Centurion II (ductor) offers a wide range of features for effective low resistance measurement.

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