Accurate and Fast Winding Resistance Measurements with Vanguard’s WRM Line of Testers

Vanguard WRM-10 Winding Resistance Test SetHighly inductive devices like transformers, generators and motors can be dangerous to test if you are not using proper test equipment. Applying a current and suddenly removing the current can cause a collapsing magnetic filed which induces a high inverse current. This can cause electrocution to personnel and injury. It is important to use proper test equipment with protection circuits to ensure safe and accurate diagnostics. 

Winding resistance is one of the standard methods of testing transformers for impending defects. It measures the resistance of the windings and compares the results to the nameplate baseline values. Defects like partial coil shorts, opens, weakened or corroded terminal connections can affect the resistance of the windings.

If you are thinking of investing in a winding resistance meter, you might want to consider electrical test equipment from Vanguard. The WRM-10, WRM-10P and WRM 40 are some of the trusted models on the market today. Their simple operation, accuracy and reliability makes them a favorite of a lot of technicians. Below is a comparison of the features to help you decide which model to get for your facility.

Vanguard WRM-10 Winding Resistance Test Set

This meter can measure resistance from 1 μΩ up to 2000 Ω. This device can also measure the contact resistance of EHV circuit breakers. This meter has dual resistance reading channels which allows you to simultaneously measure two winding resistances. It also allows four-wire Kelvin connections for excellent accuracy with no lead compensation.

Product Features

  •        36-Volt output at 10 Amperes
  •        Allows resistance reading of 100 MVA transformers in just 5 minutes
  •        Heavy-duty cooling fans for stable operation
  •        Measures resistance from 1 μΩ up to 2000 Ω
  •        Checks the make-before-break tap switching sequences of load tap changes and voltage regulators
  •        Safety features like discharge circuit and thermally-protected overload damage circuit
  •        Back-lit 16 x 2 LCD screen
  •        Turn and push knob operation
  •        PC connectivity through RS232C for diagnostics and factory calibration
  •        Compact and portable
  •        Auto-range function
  •        Comes with 3 50-foot test cables

 

Vanguard WRM-10P Winding Resistance Meter

This model is an improved version of the WRM-10. This meter can be connected to a computer through an RS232 port for advanced analysis of test results using a software application. It also allows exporting of test results in Microsoft Excel format. The WRM-10P has a built-in thermal printer so you can print out a hard copy of the test results.

Product Features

  •        36-Volt output at 10 Amperes
  •        Allows resistance reading of 100 MVA transformers in just 5 minutes
  •        Heavy-duty cooling fans for stable operation
  •        Measures resistance from 1 μΩ up to 2000 Ω
  •        Checks the make-before-break tap switching sequences of load tap changes and voltage regulators
  •        Safety features like discharge circuit and thermally-protected overload damage circuit
  •        Back-lit 20 x 4 LCD screen
  •        Turn and push knob operation
  •        PC connectivity through RS232C for advanced results analysis
  •        Compact and portable
  •        Auto-range function
  •        Built-in thermal printer
  •        Internal memory that can store 63 test records
  •        Comes with 3 50-foot test cables and analysis software

 

Vanguard WRM-40 Winding Resistance Meter

This accurate winding resistance meter can test a 500MVA transformer in as fast as 5 minutes. This helps save you time and effort when testing high power transformers.

Product Features

  •        36-Volt output at 40 Amperes
  •        Allows resistance reading of 100 MVA transformers in just 5 minutes
  •        Heavy-duty cooling fans for stable operation
  •        Measures resistance from 1 μΩ up to 500 Ω
  •        Checks the make-before-break tap switching sequences of load tap changes and voltage regulators
  •        Safety features like discharge circuit and thermally-protected overload damage circuit
  •        Back-lit 20 x 4 LCD screen
  •        Turn and push knob operation
  •        PC connectivity through RS232C for advanced results analysis
  •        Compact and portable
  •        Auto-range function
  •        Built-in thermal printer
  •        Internal memory that can store 63 test records
  •        Comes with 3 50-foot test cables and analysis software

Also refer to this Resistance Meter:

Vanguard TRM-403 Transformer Resistance Meter

If you are looking for a reliable source of Vanguard test equipment, consider Protec Equipment Resources. Please call us at 1-866-352-5550 to learn more about our services.



Visit Our Website