Transformer Testing
DC Winding Resistance Tester
Portable instrument for DC resistance measurement of inductive equipment such as transformers, motors and instrument transformers (CT/PT). Fully software-controlled with back-EMF protection and field anti-interference capability.
Overview
Portable instrument for DC resistance measurement of inductive equipment such as transformers, motors and instrument transformers (CT/PT). Fully software-controlled with back-EMF protection and field anti-interference capability.
Standards & Compliance
Benchmark standards for this equipment category
Systems in this category are commonly specified against these standards, linked to the issuing body. Final configuration and acceptance criteria follow the standard and edition you nominate.
- IEC 60076-1 — Power transformers - General
- IEC 60076-3 — Insulation levels and dielectric tests
- IEC 60076-5 — Ability to withstand short circuit
- IEEE C57.12.90 — Test code for liquid-immersed distribution and power transformers
- GB 1094 — Power transformers
- GB 50150 — Hand-over test of electrical equipment
Application Scenarios
Request Specifications & Quotation
Tell us your test object ratings, the test items you need and the applicable standards. Our sales engineers reply with a configuration proposal and a formal quotation within 24 hours.
Get a QuoteDetailed Description
Overview: the GD-200 series transformer DC resistance tester is dedicated to testing the DC resistance of inductive equipment such as transformers, motors and instrument transformers (CT/PT). The GD-200 series is a portable instrument: operation is simple, the entire test process is completed under software control, and the test data is stable, fast and accurate. It provides comprehensive back-EMF protection and field anti-interference capability, and is suitable for DC resistance testing of power equipment from distribution transformers through to large power transformers.
Technical data: the working supply is AC220V±10%, 50 Hz±1%. Ambient temperature range is 0~45℃ and ambient humidity is ≤95%RH (40±2℃). Resolution is 0.1 μΩ and accuracy class is 0.2.
Typical applications: the instrument is intended for DC resistance testing of power equipment from distribution transformers through to large power transformers, and of motors and instrument transformers (CT/PT). Its back-EMF protection and anti-interference design suit it to use in the field.
Technical Specifications
| Working supply | AC220V±10%, 50HZ±1% |
|---|---|
| Ambient temperature | 0~45℃ |
| Ambient humidity | ≤95%RH（40±2℃） |
| Resolution | 0.1uΩ |
| Accuracy class | 0.2 class |
| Brand | Gaodian Electric |
Frequently Asked Questions
What is the DC Winding Resistance Tester used for?
What protection does the tester offer for field use?
How do I get a quotation?
Further Reading
Method and selection guides that cover the tests this instrument performs.
CT vs PT Testers: What They Measure and How to Choose
A vendor-neutral comparison of CT and PT test programs: which parameters each family needs, how the test items differ, and when a combined CT/PT tester or a ratio-only set is the right buy.
Transformer Winding Deformation Testing: Methods and Standards
A short circuit, a road journey or years of load cycles all leave their mark on a transformer winding. This guide compares the main detection methods and how to interpret their results.
Reviewed by the Application Engineering Team at Nanjing Gaodian Electric Power Equipment
Specifications are taken from the manufacturer’s technical documentation. Final configuration and acceptance criteria follow the standard and edition you nominate — tell us your test list and we will confirm the ratings.
Related Products
ECBZ-GD Energy-Efficient Transformer Energy-Grade Evaluation System
Automatic evaluation system for the energy-efficiency grade of distribution transformers up to 800 kVA at 10 kV/0.4 kV. Combines intelligent test sequence control, automatic wiring changeover, data processing, data upload and report generation in one bench.
GD230 Ground Continuity Tester
Portable instrument for measuring the continuity resistance between the grounding down conductors of individual items of equipment in a substation. Controlled by a high-performance MCU with automatic current selection, on-board data retention and a thermal printer.
GD-300B Transformer Short-Circuit Impedance Tester
Measures transformer short-circuit impedance, short-circuit reactance, short-circuit resistance and three-phase impedance voltage. Uses dual A/D synchronous AC sampling and DSP for winding deformation assessment in the field.
GD-300D Reactor Electrical Parameter Tester (Portable)
Portable instrument dedicated to measuring the electrical parameters of single-phase and three-phase reactors, including AC phase voltage RMS, average voltage, current RMS, active power, reactance and inductance, at 0.5 class accuracy.
GD-400A Transformer Capacity & No-Load Loss Tester
Measures the capacity and load loss of 30 kVA to 63000 kVA power transformers on site without any external supply or auxiliary equipment. Supports waveform distortion, temperature, voltage and current correction.
GD-300D Reactor Electrical Parameter Tester (Built-in)
Panel-mounted version of the GD-300D reactor electrical parameter tester, using a 320 x 240 dot-matrix LCD with multi-screen menu operation and direct measurement of three-phase reactance, inductance and total active power.
More in Transformer Testing
- •ECBZ-GD Energy-Efficient Transformer Energy-Grade Evaluation System
- •GD-300B Transformer Short-Circuit Impedance Tester
- •GD-400A Transformer Capacity & No-Load Loss Tester
- •GDBZ-IV Transformer Test Bench
- •GDBZ-III Transformer Comprehensive Test Bench
- •Transformer Intelligent Logistics Line Test System
- •GDBZ-IV 220/110kV Main Transformer Comprehensive Test System
- •GDBZ-IV Automatic Transformer Comprehensive Test System
- •GD700A Automatic Turns Ratio Tester
- •GDRZ Transformer Winding Deformation Tester
- •GD-810 Transformer On-Load Tap-Changer Tester
- •GD200-40WA Dual-Channel DC Winding Resistance Tester
- •GD300C Power Analyzer
- •GD-700 Automatic Turns Ratio & Vector-Group Tester
Need the datasheet for this model?
Send us this product name plus your test requirements. We reply with specifications, photos and a formal quotation.