Measure Resistance of Magnetic Windings with the Raytech WR14

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RatechWR14The Raytech WR14 Winding Resistance Meter is a battery or line-operated, field-portable instrument designed specifically to measure the dc resistance of all types of magnetic windings safely and accurately. It can test transformers and rotating machine windings and perform low-current resistance measurements on connections, contacts and control circuits.


  • Charges inductive loads up to 1500 Henry
  • 2 independent measuring channels
  • Heavy-duty protection circuitry
  • Simple touch screen operation
  • Data exchange with USB-Key
  • 2 Temperature inputs
  • High power DC Supply (15A/30V)
  • DC Current adjustable for resistance values from 0.05 μΩ to 100 kΩ
  • Fast Discharge unit
  • Discharge Indicator – visible and audible indicator for discharge status
  • Demagnetizing Circuit (world unique)
  • Warning device output to show “transformer under test”
  • Emergency stop push button immediately turns off power and starts discharging
  • Internal Printer
  • Data Storage of up to 10,000 measurements



Input Line Power:

 88 to 264 VAC, 47…63 Hz, or 12V DC (charging only)

Output Voltage:

0 to 30V DC

Test Current:

User selectable 25mA … 15A

Panel Display:

Color LCD with back light and touch screen

Front Panel:

Sealed anodized


2 USB 1.1 (1 host, 1 device) and 9 Pin RS232 serial

Memory Storage:

Internally stores more than 10,000 test results

Resistance Range:

0.05 μΩ to 100 kΩ

Battery Operation:

200 single measurements at 15A

Operating Temperature:

–10°C to +60°C (14ºF to 140ºF)

Storage Temperature:

–20°C to +70°C (-4ºF to 158ºF)

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