Single Phase Winding Resistance Meters – Overview

This series is ideal for measuring the winding resistance of inductive objects. It is perfect for testing transformer windings (power transformers, distribution, autotransformers) and for on-load tap-changer verification. In addition, it can also perform transformer demagnetisation. The series contains 4 models, with maximal test currents from 10 A (RMO10TW) to 50 A (RMO50TW). They are fitted in a portable and lightweight metal housing. Rack-mount available on request. It generates a true DC ripple-free current with an automatically regulated measurement and discharging circuit. The injection of current and discharge of energy from the test object is automatically regulated. Three independent channels enable the testing of three windings in series. Consequently, this enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests. The software enables control and observation of the test process, as well as saving and analysing the results on a PC. It provides a test report, arranged in Excel spreadsheet, PDF, Word, or ASCII format. Additionally, DV-Win measures and calculates the OLTC transition time, the ripple, and the winding resistance for each tap-changing operation.

Single Phase Winding Resistance Meters – Features

• Test Voltage up to 55 V DC
• Simultaneous Three-Channel Winding Resistance Measurement
• On Load Tap Changer Verification
• Transformer Demagnetisation
• DV-TR Software
• Heat Run Test Application