Winding Resistance Meter : XWRM-10A
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.
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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
Features
- Test currents of 10A,1A, 100mA & 10mA
- Resolution of 0.1μΩ with ± 0.1% accuracy
- 3 independent resistance measuring channels
- Auto range facility
- Heat run rest facility
- 48V open circuit voltage for stable readings
- Demagnetization facility
- OLTC dynamic test with a graph: Time vs Current
- Inbuilt thermal printer & memory
- Bluetooth enabled for Motware mobile app
Power Supply: 115/230VAC,50/60 Hz
Test Current:
10A, 5A, 1A, 100mA & 10mA
Open-Circuit Test Voltage: 48 VDC
Burden: 500VA
Resistance Measurement Range
Accuracy: + (0.25% rdg + 0.25% F.S.D.)
| Test Current | Range (Ω) | Resolution (Ω) | Maximum Display (Ω) | |||
| 10A | 1A | 100mA | 10mA | |||
| √ | 2mΩ | 0.1uΩ | 1.9999mΩ | |||
| √ | √ | 20mΩ | 1uΩ | 19.999mΩ | ||
| √ | √ | √ | √ | 200mΩ | 10uΩ | 199.99mΩ |
| √ | √ | √ | √ | 2Ω | 0.1mΩ | 1.9999Ω |
| √ | √ | √ | 20Ω | 1mΩ | 19.999Ω | |
| √ | √ | 200Ω | 10mΩ | 199.99Ω | ||
| √ | 2000Ω | 0.1Ω | 1999.9 Ω | |||
| Test Current | Range (Ω) | Resolution (Ω) | Maximum Display (Ω) |
| 5A | 4 mΩ | 0.1 µΩ | 4.0000 mΩ |
| 40 mΩ | 1 µΩ | 40.000 mΩ | |
| 400 mΩ | 10 µΩ | 400.00 mΩ | |
| 4 Ω | 0.1mΩ | 4.0000 Ω |
General
Principle: 4 wire measurement
Measurement Channel: 2 resistance & 1 current channel
Display: LCD
Keypad: Sealed soft touch keypad
Indication: LED and beep during the test on & discharge
PC Interface: USB
Internal memory: 100 test readings
Safety & Standards
Ingress Protection: IP 54
CE Certification
Safety: Compliant with IEC 61010-1
EMC: Compliant with IEC 61326-1
Environmental
Conditions Operating Temperature: 0°C to 55°C
Storage Temperature: -10°C to 55°C
Humidity: <90% RH, non condensing
Physical Specifications
Dimensions (L×W×D) mm: 485 x 392 x 192
Weight: 10 kg
Software Details
Type: Windows based analytical software
Data Transfer: Real-time data transfer
Features: Online data acquisition
Graph plotting for heat run test & OLTC dynamic test
Remote operation
Test report generation
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
Motware Cloud Application
Motwane has designed and developed MOT-WARE – a cloud-based Test Data platform to aid in accurate Asset Health Assessment. Through Motware, the Test and Measurement industry has taken a huge leap forward. It is a revolution in the way tests are conducted and the way data is analyzed.
MOT-WARE captures data from a full range of BLE Enabled Motwane Testing Equipment. It is accessible from web based applications, desktop applications, and mobile applications. In addition, it offers an open architecture that can seamlessly integrate with any non Motwane Test and Measurement equipment for quick and authentic digital test data. Data can be captured periodically as well as streamed in real-time via sensors from IoX’n Series of IoT devices. (link to Ioxn page)
Some of its features include a pre-loaded repository of test templates for various assets as well as customizable test templates. A customized report builder in MOT-WARE allows users to create reports that can be designed and generated as per their desire. MOT-WARE also has a facility to upload test data history and the breakdown history of the assets. Tests can also be viewed by various metrics such as Pass/Fail.
Digital test data enables data analytics and visualization which offers multiple statistical advantages. It improves productivity & efficiency, enables cost reduction, and improves asset life. Data analysis done through MOT-WARE includes trend analysis, MIS reports, and pivot tables. As an add-on, MOT-WARE also offers ‘Motwane AI Analytics’(Link to AI Analytics page) which uses a proprietary AI algorithm and Machine Learning to make accurate predictions about your asset’s life based on its behavioral patterns and operating conditions.
MOT-WARE can be used for various applications across customer segments like Utilities, OEMs, Industries, Electrical contractors (Testing, O&M) or Field repairs & service providers, EPCs, commercial premises, and many more.
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