Excellent CT Testing with Vanguard's EZCT Series of Testers

Posted by Protec Tech Team on

Vanguard EZCT-2000B Automated CT Test SetVanguard's EZCT series of current transformer testers are designed to be rugged and portable, ideal for industrial and field applications. They can perform the CT excitation, polarity and ratio tests. These testers allow you to test current transformers in their field-mounted configuration. This reduces the need to remove the CT from the host electrical component.

The EZCT series of current transformer testers can perform excitation tests as specified by the ANSI/IEEE C57.13.1, IEC 60044-1 methodology. These testers apply a variable AC test voltage to the current transformer's secondary windings. The EZCT then records the test voltage and excitation voltage injected to the CT during the test. The EZCT testers also have a built-in thermal printer that lets you plot up to 10 knee-point voltages and excitation curves. The testers can also calculate and print out IEEE-30, IEEE-45, ANSI/IEC 60044-1 knee-point voltages.

The EZCT testers can determine the ratio of current transformers using the ANSI/IEEE C57.12.90 measurement technique. This test is carried out by applying a test voltage on the current transformers X terminals. The induced voltage is then measured across the H1 and H2 terminals of the current transformer. Winding polarity is displayed as in-phase (+) or out-of-phase (-) sign and annotated with the phase angle.

Below is a comparison of the Vanguard Instrument's EZCT family of testers to help you choose the most suitable tester for your needs.

 

Vanguard EZCT Automatic CT Test Set

Features:

  •        Conducts excitation, winding polarity and current-ratio tests
  •        20X4 back-lit LCD screen
  •        Alphanumeric keypad
  •        Variable output test voltage from 0-50 Volts at 2 Amperes
  •        Measures current from 0-10 Amperes
  •        Measures current-ratio from 0.8 to 5,000
  •        Can measure phase angle from 0-360 degrees
  •        4.5 inch wide thermal printer
  •        Can store 128 current transformer test records
  •        Stores 10 internal header records storage
  •        USB and RS232 interfaces allows you to attach the device to a computer for remote-controlled operation and data analysis

 

Vanguard EZCT-10 Automatic CT Test Set

This tester is similar with the Vanguard EZCT but has a maximum output current of 10 Amperes.

Features:

  •        Conducts excitation, winding polarity and current-ratio tests
  •        20X4 back-lit LCD screen
  •        Alphanumeric keypad
  •        Variable output test voltage from 0-50 Volts at 10 Amperes
  •        Measures current from 0-10 Amperes
  •        Measures current-ratio from 0.8 to 5,000
  •        Can measure phase angle from 0-360 degrees
  •        4.5 inch wide thermal printer
  •        Can store 128 current transformer test records
  •        Stores 10 internal header records storage
  •        USB and RS232 interfaces allows you to attach the device to a computer for remote-controlled operation and data analysis

 

Vanguard EZCT-2000A Automated CT Test Set

A third generation tester which is microprocessor-controlled to ensure accuracy and reliability. It has a maximum output test voltage of 2000 Volts AC which allows you to test large current transformers. It also has a large internal storage for test records. You can also store the test results to an external flash drive.

Features:

  •        Conducts excitation, winding resistance, winding polarity and current-ratio tests
  •        20X4 back-lit LCD screen
  •        Alphanumeric keypad
  •        Variable output test voltages from 0-50 VAC at 10 Amperes, 0-1200 VAC at 2 Amperes and 0-2000 VAC at 1.2 Amperes
  •        Measures current from 0-10 Amperes
  •        Measures winding resistance from 100 μΩ up to 10 Ω
  •        Measures current-ratio from 0.8 to 5,000
  •        Can measure phase angle from 0-360 degrees
  •        4.5 inch wide thermal printer
  •        Can store 140 current transformer test records
  •        Stores 128 test plans
  •        USB flash drive port for extra storage
  •        USB and RS232 interfaces allows you to attach the device to a computer for remote-controlled operation and data analysis

 

Vanguard EZCT-2000B Automated CT Test Set

This tester has all the features you need to save you time and increase productivity during the commissioning stage of current transformers. This tester can also conduct insulation test and measure winding resistance of current transformers. This reduces the need for a separate tester during diagnostics. 

Features:

  •        Conducts excitation, winding resistance, insulation resistance, burden, winding polarity and current-ratio tests
  •        20X4 back-lit LCD screen
  •        Alphanumeric keypad
  •        Variable output test voltages from 0-50 VAC at 10 Amperes, 0-500 VAC at 5 Amperes, 0-1200 at 1.2 Amperes and 0-2000 VAC at 1 Ampere
  •        Current source output of 1-20 Amperes
  •        Measures current from 0-10 Amperes
  •        Measures winding resistance from 100 μΩ up to 10 Ω
  •        Measures current-ratio from 0.8 to 5,000
  •        Can measure phase angle from 0-360 degrees
  •        4.5 inch wide thermal printer
  •        Can store 140 current transformer test records
  •        Stores 128 test plans
  •        USB flash drive port for extra storage
  •        USB and RS232 interfaces allows you to attach the device to a computer for remote-controlled operation and data analysis

 

The EZCT family of CT testers offer various models to suit your needs. There's a model for basic CT testing to thorough diagnostics with advanced results analysis.

 

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 June, 2012 and has been updated freshness, accuracy and comprehensiveness.

Topics: Vanguard, Current Transformer

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