Top Transformer Winding DC Resistance Tester Manufacturers and Suppliers in China

Transformer Winding DC Resistance Tester

For a reliable and accurate method for testing transformer winding DC resistance, look no further than DEMIKS. As one of the leading manufacturers and suppliers in China, we provide the market with advanced transformer winding DC resistance testers that will satisfy your testing requirements. The performance of the testers is guaranteed in terms of accuracy and precision of measurement. Let DEMIKS serve you with all the transformer winding tests you require. Contact us today and find out how our testers can improve your operations.

D210-2A Winding Resistance Tester

Efficiency Improvement: Saves time with a rapid measurement process during transformer testing.
System Security: Permit comprehensive protection function for perfect protective covering.
Integrated Printing: Result printing is made easy with a panel type micro printer.
Safety Design: Protects against misoperation with automatic discharge and indicator functions ensuring safe operation.
Effective noise immunity: Have strong anti-interference capabilities for reliable results.
Effective and Precise: Provides fast and precise measurements with superior data repeatability.

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Mode	Measurement Range	Measurement Current	Power Source	Measurement Accuracy	Display and Printing
D210-1A	0mΩ~2000Ω	0.001~1A	AC and DC dual purpose with lithium-ion rechargeable battery	0.2%±2 bit (25±2℃)	Digital
D210-2A	0mΩ~2000Ω	0.002~2A	AC and DC dual purpose with lithium-ion rechargeable battery	0.2%±2 bit (25±2℃)	Crystal
D210-3A	0mΩ~2000Ω	0.003~3A	AC and DC dual purpose with lithium-ion rechargeable battery	0.2%±2 bit (25±2℃)	Crystal
D210-5A	1mΩ~500Ω	0.04~5A	AC and DC dual purpose with lithium-ion rechargeable battery	0.2%±2 bit (25±2℃)	Crystal with printer
D210-10A	0.2mΩ~10Ω	0.2~10A	AC220±10% 45Hz—60Hz	0.2%±2 bit (25±2℃)	Crystal with printer
D210-20A	0.1mΩ~8Ω	1~20A	AC220±10% 45Hz—60Hz	0.2%±2 bit (25±2℃)	Crystal with printer
D210-40A	0.05mΩ~4Ω	5~40A	AC220±10% 45Hz—60Hz	0.2%±2 bit (25±2℃)	Crystal with printer
D220-10A	0.2mΩ~10Ω	0.2~10A	AC220±10% 45Hz—60Hz	0.2%±2 bit (25±2℃)	Crystal with printer

D210-10A Resistance tester

Critical for Transformer Testing: Optimal for transformers and high power inductive apparatus winding DC resistance measurement prior to shipping.
Simultaneous Measurement of Three-Phase: Measures YN three-phase DC resistance simultaneously, greatly minimizing the time spent on testing.
Rapid and Precise: Guarantees the measurements are rapid and precise, with the premier data reproducibility.
Strong Anti-Interference: Provides a robust degree of anti-interference without compromising dependability.
Safety Features: Offers automatic discharge and discharge indication functions which eliminate the possibility of misoperation while providing safety.

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D210-20A DC Resistance Tester

Applications: Best suited for maintenance of transformers, testing electric equipment, and working in power plants, transformer manufacturing, and repair shops.
Key Features: Compact size, integrated display and printing system, automation friendly, precision measurements (0.2 ± 0.02), and multi-range resistance measurement from (0.1mΩ to 80Ω) and high current output from (1A to 20A) with outstanding flexibility.
Specifications: Works at AC220V ±10% 45Hz–60Hz with a crystal display. Equipped with a built-in printer and measures resistance with high precision.

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D210-40A Winding resistance tester

Efficient and accurate testing: With the capability to measure DC resistance of transformer windings with high precision (±0.2%) and with a rate of speed of 0.05mΩ to 4Ω, the D210-40A supports currents of 5A to 40A.
Safety and portability: Designed with automatic discharge features for user safety, the unit is also equipped with a rechargeable battery, enabling use under AC or DC power conditions, enhancing convenience and usability on the go.
Convenient features: Features strong anti-interference, three phase measurement, and a built-in printer for immediate output documentation.

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D210-ST10A winding DC resistance tester

Purpose and Application: The D210-ST10A is essential for transformer handover tests, measuring DC resistance in transformer windings, and performing the handover test for high-powered inductive apparatuses systems.
Key Features: It offers three-phase measurement simultaneity, fast and accurate testing, ample anti-interference, automatic discharge safety mechanisms, and a micro printer for documentation.
Specifications and Usability: It retains versatility and user-friendliness with a wide range of measurement, multiple current levels, compact design (9kg), operable temperatures from -10℃ to 50℃, and flexible for various sizes of transformers.

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Technical Specifications	Details
Output Current	Single-phase: 20A, 10A, 5A, 1A, 0.1A, 10mA, <1mA,Three-phase: 10A+10A, 5A+5A, 1A+1A, 0.1A+0.1A
Measurement Range	20A range: 0.5mΩ～1Ω, 10A range: 1.0mΩ～2Ω, 5A range: 10mΩ～4Ω, 1A range: 0.1Ω～20Ω, 0.1A range: 2.0Ω～200Ω, 10mA range: 50Ω～2kΩ, <1mA range: 500Ω～25kΩ; 10A+10A range: 0.5mΩ～0.8Ω, 5A+5A range: 10mΩ～1.6Ω, 1A+1A range: 0.1Ω～8.0Ω, 0.1A+0.1A range: 2.0Ω～80Ω
Accuracy	±(0.2% of reading + 2 digits)
Power Supply	AC220V±10%, 50/60Hz
Operating Temperature	-10℃～50℃
Relative Humidity	<90% (non-condensing)
Dimensions	400×315×223mm
Weight	9kg

D210-ST20A Resistance tester

Purpose and Application: The D210-ST20A plays a critical role in transformer handover testing by ensuring detection of issues such as poor connections, broken wires, and material defects in transformer windings and high-power inductive devices.
Key Features: It has three-phase resistor measurement with simultaneous three phase resistance measurement; rapid and accurate results, significant anti-interference; automatic discharge to enhance safety; and a built-in printer for documenting the results.
Technical Highlights: The present range of current and resistance values within which the D210 ST20A can operate are significant with accuracy at ±0.2% of reading + 2 digits, thus it can be conveniently relied on while conducting transformer tests.

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D210-ST40A Resistance tester

Purpose: Tailored for testing the DC resistance of transformer windings and other high-power inductive apparatus, particularly during pre-delivery transformer tests.
Simultaneous Testing: Conducts YN three-phase DC resistance measurements simultaneously, yielding substantial time savings.
Accuracy and Speed: Provides rapid, accurate measurements with exceptional repeatability, anti-jamming, and data reliability.
Integrated Printer: Includes micro-printers of the panel type on the case which enable instant printing of result documents.
Versatility: Excellent for a broad spectrum of transformers and inductive devices, hence suitable for manufacturers and power companies.

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D210-10A-D resistance tester

Purpose: Used to determine the DC resistance of transformer windings and high-power inductive devices which is critical for the transformer handover test prior to delivery.
Built-in Printer: Contains a micro printer type panel that conveniently documents measurement results.
Measurement Range: Works from 0.2mΩ to 10Ω which is fairly broad.
Current Range: Enables measurement of currents ranging from 0.2A to 10A.
Power Source: Requires AC220V at a frequency of 45Hz to 60Hz.
Accuracy: A high level of accuracy with measurement 0.2% ± 2 bits deviation at 25°C.

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DRZ-211 resistance tester

Application: The internal faults of transformers, such as winding deformations, inter-turn short circuits, or phase-to-phase contacts, can be diagnosed by appliable DRZ-211 Transformer Winding DC Resistance Tester using the most sophisticated Frequency Response Analysis (FRA) techniques.
Key Features: Test Precision and Diagnostic Confidence with FRA Frequency Response Analysis features. Arranged with microprocessor systems, the device ensures high speed performance, faultless diagnostics through DDS frequency sweep technology, dual channel 16 bit A/D sampling, and USB/WiFi communication peripherals. The device captures precise waveform variations and executes automatic test result analysis, word document generation inclusive.
Specifications: Delivers unrivaled transformer testing efficiency and reliability amidst compact design during other ±0.1dB amplitude accuracy and 10Hz - 10MHz frequency scope claim, unmatched test repeatability of 99.9%, and overall lightweight body of 10kg.

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Parameter	Specification
Sweep Modes
Linear Frequency Sweep Range	10Hz - 10MHz
Points	40,000
Resolution	0.25kHz, 0.5kHz, 1kHz
Segmented Frequency Sweep
Range 1	0.5kHz - 1MHz (2,000 points)
Sub-ranges	0.5kHz - 10kHz, 10kHz - 100kHz, 100kHz - 500kHz, 500kHz - 1,000kHz
Technical Parameters
Amplitude Range	-120dB to +20dB
Amplitude Accuracy	±0.1dB
Frequency Accuracy	0.01%
Test Repeatability	99.90%
Physical Dimensions
Instrument Size (L×W×H)	300 × 340 × 120 mm
Aluminum Case Size (L×W×H)	310 × 400 × 330 mm
Total Weight	10kg

DSC-211 (embedded type)

Purpose: The DSC-211 Transformer Winding DC Resistance Tester aims to cut down on the misuse of electrical power, like fee evasion or unauthorized capacity overloading, by measuring the parameters of the transformer precisely.
Automatic Features: It has automatic internal range switching for ease of primary voltage/current measurements, minimal wiring, simple phasor diagram verification, and automatic wiring check display for three phase transformers.
Testing Capabilities: Allows full current load tests for transformers up to 1000kVA and 1/3 rated current load tests for transformers up to 3150kVA with automatic zeroing to rated-current-loss parameters.
User Interface: 320×240 high-brightness LCD displays soft graphic menu with full Chinese guiding menu, operated with touch keys, backlight adjustable, and show phasor diagrams so straightforward they need no further explanation.

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Category	Parameter	Specification
Environmental Conditions	Temperature	-5°C to 40°C
	Relative Humidity	<95% at 25°C
	Altitude	<2500m
	Interference	No strong vibration or electromagnetic fields
	Power Supply	220VAC±10%, 45Hz~55Hz
Measurement Range	Active Part
	Current Output	0~10A
	Voltage Measurement	0~10V
	Test Capacity	Dry-type: 30kVA~2500kVA
		10kV Oil-immersed
		20kV Dry-type: 50kVA~2500kVA
		35kV Oil-immersed: 50kVA~31500kVA
		35kV Dry-type: 50kVA~2000kVA

DSC-211 resistance tester

Multi-Functional and High-Precision Testing: The DSC-211 is a versatile instrument that integrates transformer capacity and characteristic parameter testing, measuring capacity, no-load and short-circuit losses, as well as impedance voltage with exceptional precision and reliability.
Enhanced Efficiency and Simplicity: It is lightweight, compact, and easy to operate; therefore, it streamlines the processes of wiring, testing, and recording, which replaces traditional multi-meter methods and enhances work efficiency.
Advanced Features for Accurate Results: The device is also equipped with features such as automatic range switching, wiring error detection, vector diagram display, and automatic corrections for measuring waveforms, temperature, voltage, and current ensuring precise measurements.
Wide Application Range: Designed for testing transformers up to 3150KVA; external voltage and current transformers are supported for greater measurement flexibility, broadening application uses.

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Category	Specifications
Environmental Conditions	Temperature: -5°C ~ 40°C
	Relative Humidity: <95% (at 25°C)
	Altitude: <2500m
	External Interference: No extra-strong vibration or electromagnetic field
	External Power Supply: 220VAC ±10%, 45Hz ~ 55Hz
Measuring Range	Current Output: 0 ~ 10A
	Voltage Measurement: 0 ~ 10V
	Test Capacity:
	- 10kV oil-immersed & dry-type transformers: 30kVA ~ 2500kVA
	- 35kV oil-immersed transformer: 50kVA ~ 31500kVA
	- 20kV dry-type transformer: 50kVA ~ 2500kVA
	- 35kV dry-type transformer: 50kVA ~ 2000kVA
Features	Voltage: 0 ~ 600V (automatic switching range inside the instrument)
	Current: 0 ~ 100A (automatic switching range inside the instrument)
	Frequency: 45Hz ~ 65Hz
Accuracy of the Test	Voltage: 2 ~ 100V, ±0.2%FS; 100 ~ 450V, ±0.2%
	Current: 0.5 ~ 10A, ±0.2%FS; 10 ~ 100A, ±0.2%
	Power: ±0.5% (Cos Φ > 0.1), ±1.0% (0.02 < Cos Φ < 0.1)
Dielectric Strength	Voltage & Current Input: 100mΩ insulation resistance of casing
	Power Frequency: 2kV (effective value) between housing and input, lasting 1 minute
Other Indicators	External Dimension: 400×300×170mm
	Weight: 6kg (excluding test line)

DYZ-209 winding resistance tester

Purpose: With the DYZ-209 Tester, one can assess and analyze the electrical operational characteristics of on-load tap changers in power and special transformers.
Key Measurements: The device does precise measurements of OLTC features such as transition period waveform, resistance values, and three-phase synchronization. Such measurements are done with superb precision.
Features: Solves problems pertaining to data display, analysis, storage, and printing for OLTC tests. Also provides a dedicated solution for other OLTC testing methods.
Benefits: Enhancing transformer dependability while improving power system performance allows for more reliable fault detection during maintenance.

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Parameters	indicators	Parameters	indicators
Voltage input	>20V	Power supply	AC220V±10%，50Hz
Voltage output	≥1A	Power	180W
Resistance measurement range	0.3~40Ω	Resistance measurement accuracy	0.1Ω~1Ω±0.1Ω，1Ω~40Ω±5%±0.1Ω
Time measurement range	1ms~256ms	Time measurement accuracy	1ms~100ms±0.1ms, 100ms~250ms±1%
Three-phase synchronization	0.1ms	Sampling frequency	10~20KHz
Operating temperature	0~40℃	Operating humidity	≤80%RH
dimension	420mm, 350mm, 220mm	weight	12kg（apparatus are included）

DZK-207 resistance tester

Application: The tester assesses the transformer winding deformation from short-circuit currents or mechanical shocks for operation, transport, or installation.
Key Measurements: Presents and measures short-circuit impedance and reactance of transformers, three-phase impedance voltage, and voltage, current, power, and frequency. Measure and display voltage, current, power, frequency.
Power Supply Options: Single-phase 220V AC or low-power UPS (500VA). Operate with Internal/external power supply options.
Ease of Use: Wiring ease and simple operation, automatic three phase measurement with direct display of results. Managing voltage and current auto adjustment free of hinderance.

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Parameter	Specification
Voltage	20V ~ 400V
Current	0.5A ~ 10A
Accuracy	Voltage/Current: Class 0.2
	Impedance: Class 0.5
Dimensions	350mm × 270mm × 170mm

Transformer DC Resistance Test: Understanding Winding Resistance Measurements

The key aspects where the Transformer DC Resistance Test proves helpful are evaluating performance, identifying defects such as malfunctioning connections or aging, and assisting in proactive maintenance. This blog discusses the test’s functioning, methods, and advantages to ensure the dependable operation of transformers.