MOEORW-W461S2 three-phase DC resistance Tester
The MOEORW-W461S2 three-phase DC resistance Tester is a dedicated intelligent device for transformer DC resistance testing, offering precision and high efficiency.
Three-in-one testing saves time, multiple modes are compatible, data storage is complete, and protection is more robust and secure.
3 Phase DC Resistance Tester is applicable to transformer manufacturing, installation, and preventive testing in the power sector.
Product Introduction
The DC resistance of a transformer is a mandatory test item in the manufacturing process of transformers, including semi-finished and finished product factory tests, installation tests, commissioning tests, and preventive tests by the power sector. It can effectively detect manufacturing defects such as material selection, welding, loose connections, missing strands, and broken wires in transformer coils, as well as potential hazards after operation.
To meet the need for rapid measurement of transformer DC resistance, our company has developed a fully automatic three-Phase DC resistance tester , leveraging our technological advantages . This instrument employs cutting-edge power supply technology, with the entire unit controlled by a single-chip microcomputer. It automatically performs self-testing, data processing, display, and printing functions, and features automatic discharge and discharge alarm indication. The instrument boasts high testing accuracy, is easy to operate, and enables rapid measurement of transformer DC resistance.
Product Parameter (specification)
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Three-phase output current test |
2* 5 A, 2* 2.5 A, 2* 1 A |
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Single-phase testing:10A , 5A , 1A |
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Test range |
Three-phase test:2 * 5 A 1 mΩ ~ 1 Ω 2* 2.5A 2 mΩ ～ 2 Ω 2* 1 A 5mΩ～5Ω |
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Single-phase test |
1 0A 50 0μΩ～ 2 Ω 5 A 1 mΩ～ 4 Ω 1 A 5mΩ ～ 20Ω |
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Resolution |
0.1μΩ |
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Measurement accuracy |
±(0.2% of reading + 2 digits) |
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External dimensions |
420mm × 250mm × 340mm |
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The instrument weighs |
15kg |
Usage conditions
- Ambient temperature -10℃～50℃
- Ambient humidity ≤85%RH
- Operating power supply: AC220V±10%
- Power frequency 50±1Hz
Product feature and application
Three-phase testing: For transformers with YN or yn connection on the high-voltage or low-voltage side, only one wiring is required. The instrument can measure the DC resistance of A0 , B0 , and C0 simultaneously and automatically calculate the three-phase imbalance rate, which greatly saves testing time.
Single-phase testing: For transformers with any connection method, only one wiring is required. The instrument can be operated to select any winding of the transformer for testing . The entire testing process does not require reversing the test leads.
Magnetizing test: For transformers with three-phase five-limb low-voltage angle connection (YNd11) connection, the instrument can automatically connect or short-circuit the magnetizing circuit of the winding to quickly test the DC resistance of the low-voltage winding .
The instrument has a built-in test matrix that can save the DC resistance values of each phase at each tap position of the transformer and the three-phase unbalance rate . It can also print the DC resistance values converted to the rated temperature .
The instrument features a 5.7-inch extra-large LCD display, which is clearly visible even in sunlight;
The instrument comes with a high-speed miniature thermal printer: it can print measurement and historical data ;
The instrument can permanently store 500 sets of test data, and can also store data using a USB flash drive;
The instrument has comprehensive back EMF protection.
The instrument has automatic discharge and discharge alarm indication functions, which reduces misoperation and ensures the safety of equipment and personnel;
The instrument features a wide operating temperature range, high precision, shock resistance, anti-interference capabilities, and portability.
Prodection details
Transformer production process
The factory tests of semi-finished and finished products during the transformer manufacturing process are used to check for defects in manufacturing processes such as coil material selection and welding.
Transformer installation and maintenance
Transformer installation, handover testing, and preventive testing of transformers conducted by the power sector are all part of the process to identify potential operational hazards such as loose coil connections, missing strands, and broken wires after operation.
Company Qualifications
Q: Are you a factory or a trading company?
We are a professional manufacturer of testing equipment.
Q: How is the after-sales service?
A: The warranty period is 12 months. After the warranty period, we also provide lifetime service paidrepair or service.
Q: How is the after-sales service?
A: The warranty period is 12 months. After the warranty period, we also provide lifetime service paidrepair or service.
Q: What about transportation?
A: It depends on your requirements. We can ship to your airport by air, to your seaport by sea, or to your office by courier.
We also accept cooperation with your shipping agent.
Q: Are your keyboard, interface, software, and manuals in English?
A: Yes, if you are using the English version of the keyboard, interface, software, and manual and require other languages, please contact us for confirmation.
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