XWRM-10A transformer winding resistance meter is designed for accurate & fast measurement of the highly inductive loads such as transformers, reactors, HT motors, etc. The selectable smooth DC test current is useful to test windings with different ratings. The 48V open circuit voltage can saturate the core quickly to get stable readings. The three resistance measurement channels are used for the simultaneous measurement of the three windings to reduce the testing time. The heat run test feature can be availed with graphical representation with the software and also has demagnetization property. XWRM-10A can test the make-before-break operation of on-load tap-changers which can help you analyze the OLTC switch contracts. Backed with EMF protection against high inductive kickbacks, the large LCD with a keypad provides easy operations. It also has an internal memory for 2000 test results. The software is designed for detailed report generation and control. The in-built thermal printer provides onsite report printing.

XWRM-10A has a Bluetooth module with the Motware mobile app for remote access to the testing data & storage in the cloud for further analysis & record purposes.

Applications

The winding resistance test is an essential test that enables the identification of shorted turns, loose connections, or deteriorating contacts in tap changers and measurements on all tap changer positions. The transformer’s condition can be compared to previous or factory test values for evaluating the condition of the current windings and leads. The accepted criteria for the field-measured values should be within 3% of the factory values. A change higher than the accepted criteria is indicative of short-circuited turns, poor joints, or bad tap changer contacts. This test should be performed during acceptance testing and can also be performed while other maintenance electrical tests are conducted.

• Power Transformer
• Motor and Generator
• Reactor
• Heat Run Test

Standard Accessories

• 15 meters measuring test lead set
• Mains power cord
• Short links – 2Nos.
• Earthing lead
• User manual
• Calibration certificate
• Carry case for test leads

Optional Accessories

• OLTC probe
• PC Software
• USB cord
• Temperature sensor
• Bluetooth application via cloud based Motware application

Available on EnvMart, these Resistance Meters are designed for precise measurement of electrical resistance in circuits and components. Motwane Resistance Meters deliver high accuracy and reliability, making them essential for electrical testing, maintenance, and quality control applications.