Transformer DC Resistance Tester

Transformer DC Resistance Tester for checking winding resistance in transformer maintenance, OEM/ODM available for utilities, labs, and service contractors.

Fast Testing 20A Precision Resistance Meters Single Phase Transformer DC Winding Resistance Tester

$1,700-1,800 /unit

Price varies depending on material, logo, quantity and customization requirements.

MOQ 1 unit
Model NO. EI-7475
Service OEM / ODM
Quality You Can Trust
Flexible & Scalable Solutions
Customizable Product Options
Comprehensive Specifications
Your Reliable Business Partner

Introduction

TypeTesting MachineAccuracy ClassStandard Accuracy
Voltage220 VProtection ClassIP65
customized supportOEMpower100 W
Accuracy±5%Product nameDc resistance tester
Output current<5mA, 1A, 2.5A, 5A, 10A, 20AMinimum resolution0.1μΩ
Range 1100μΩ~1Ω (20A) 500μΩ~2Ω (10A)Range 21mΩ~4Ω (5A) 2mΩ~8Ω (2.5A)
Range 35mΩ~20Ω (1A) 10Ω-20KΩ (<5mA range)Accuracy±(0.2%+2 characters)
Working temperature0~40℃Working humidity<90%RH, no condensation
Dimensionslength 325mmX width 240mmX height 275mm

We are China Loong Electrical Instrument Co., Ltd., a professional manufacturer and supplier specializing in Electrical Instrument. We have brought together and coordinated resources across the Electrical Instrument supply chain, enabling us to maintain consistent product quality and establish long-term partnerships with clients worldwide.

Our mission is to provide high-quality products and reliable service. We are committed to offering the following advantages:

  • Stable production system ensuring consistent quality, dependable supply, and standardized manufacturing management;
  • Strict quality control covering material selection, processing, surface finishing, and final packaging;
  • Variety of products and specifications to meet diverse project requirements and application scenarios;
  • OEM & customization support based on drawings, samples, or specific technical requirements;
  • Flexible packaging solutions to ensure safe handling and transportation of products;
  • Continuous improvement in products and services to better support customers in different markets.

If you are interested in our products, please feel free to contact us. We look forward to establishing long-term and mutually beneficial cooperation with you.

Copyright © 2026 China Loong Electrical Instrument Co., Ltd. All rights reserved.
Leave A Message
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

Fast Testing 20A Precision Resistance Meters Single Phase Transformer DC Winding Resistance Tester

SKU: EI-7475

Contact Form (#3)

Home

Products

About

Contact