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{"title":"Handheld Loop Resistance Tester Circuit Breaker Contact Resistance Meter","imgUrl":"https:\/\/img.chinax.com\/nimg\/91\/b8\/f1c6640512f02ae747836d522e4e-200x200-1\/handheld_loop_resistance_tester_circuit_breaker_contact_resistance_meter.jpg","attrs":{"Brand Name":"HKVTest","Model Number":"100A\/200A","Place of Origin":"wuhan","Minimum Order Quantity":"1"}}
{"title":"20A 10A DC Resistance Tester","imgUrl":"https:\/\/img.chinax.com\/nimg\/94\/eb\/12518957cb570f33b73999e4146c-200x200-1\/20a_10a_dc_resistance_tester.jpg","attrs":{"Brand Name":"HKVTest","Model Number":"10A\/20A","Place of Origin":"wuhan","Minimum Order Quantity":"1"}}
{"title":"LCD Display Insulation Resistance Tester 0-2000G\u03a9 High Accuracy Megohmmeter for","imgUrl":"https:\/\/img.chinax.com\/nimg\/d2\/a9\/c184bc614c25cd165c3998df5d88-200x200-1\/lcd_display_insulation_resistance_tester_0_2000g_ce_a9_high_accuracy_megohmmeter_for_power_lines_2ftransformers.jpg","attrs":{"Brand Name":"HKV Test","Model Number":"10A 5A 1A 300mA 100mA <5mA","Place of Origin":"WuHan","Minimum Order Quantity":"1"}}
{"title":"500kV Wireless High Voltage Phase Detector","imgUrl":"https:\/\/img.chinax.com\/nimg\/a5\/0e\/76a162555cf44cddc8e0980e373b-200x200-1\/500kv_wireless_high_voltage_phase_detector.jpg","attrs":{"Brand Name":"TAG-8600C","Model Number":"500KV","Place of Origin":"WuHan","Minimum Order Quantity":"1"}}
The DC resistance tester is an essential tool for testing inductive coils such as power transformers, mutual inductors, reactors, and electromagnetic operating mechanisms during manufacturing, factory inspections, installation, major repairs, post-tap-changer adjustments, acceptance tests, and preventive tests in the power sector. It can inspect the welding quality of winding joints, detect inter-turn short circuits, verify the proper contact of tap-changer positions, check if the actual tap position matches the indicated position, identify broken leads, and detect broken strands in multi-strand windings. The instrument features a compact size, lightweight, high output current, excellent repeatability, strong anti-interference capability, and comprehensive protection functions. The device is equipped with an ARM high-integration core and includes automatic discharge and discharge alarm functions. With high testing accuracy and simple operation, it enables rapid measurement of transformer DC resistance.
Features
The instrument is controlled by a high-speed microcontroller, offering high automation and ease of operation.
It adopts advanced power technology with a wide measurement range.
Comprehensive protection functions reliably safeguard against back EMF impacts, ensuring higher reliability.
Fast response, stable measurement data, and automatic data refresh during testing.
Intelligent power management technology ensures the instrument operates at minimal power, reducing internal heat generation and saving energy.
Built-in non-volatile clock.
Equipped with non-volatile memory for permanent data storage.
Measurement Range
Current Range
Measurement Range (Resistance)
<5mA
30Ω–50KΩ
100mA
500mΩ–80Ω
300mA
100mΩ–25Ω
1A
50mΩ–8Ω
5A
1mΩ–0.4Ω
10A
0.5mΩ–200mΩ
Technical Specifications
Parameter
Description
Output Current
Auto, 10A, 5A, 1A, 300mA, 100mA, <5mA
Resolution
0.1μΩ
Accuracy
0.2%
Open-Circuit Voltage
2.5V (for 5A/10A range); battery voltage (for other ranges)
Wuhan HKV test Electrical Equipment Manufacturing Co., Ltd
Room 403, Unit 4-02, Phase III, Optics Valley Core Center, No. 303 Guanggu Avenue, East Lake High-Tech Development Zone, Wuhan City, Hubei Province, P.R.China