Three-phase Transformer Winding Ohmmeter

Model: TWO320

Three-phase Transformer Winding Ohmmeter is designed to accurately measure three-winding resistance of power transformers. It can save time by testing three-winding without having to disconnect and reconnect leads. The test sequence can be selected as three-winding measurement of HV or LV separately, or single winding test.

Main Features

1) DC test current up to 20 A maximum

2) Automated three-winding measurement capability

3) Fast testing with one-time connection principle

4) Calculates three-phase resistance unbalance rate automatically

5) Fast auto safety discharge circuit

6) Able to print the test results directly via built-in printer

Technical Data

◇DC output: automatically select, maximum 20A

◇Resistance measurement: 0-100Ω

◇Measuring accuracy: 0.2% reading ±2μΩ

◇Resolution: 0.1μΩ

◇7-inch true-color LCD screen for display

◇USB port for downloading results

◇Built-in printer for printing test results directly

◇Max. memory capacity: 500 groups test result

◇Power supply: AC220V/230V, 50Hz/60Hz

◇Dimension: 400x340x195mm(15.75x13.39x7.68 in)

◇Weight: 8kg(17.64 lb)

◇Environmental Conditions

storage temperature: -20℃~60℃

humidity: <90%

operating temperature: -10℃~50℃

◇Safety Qualifications and EMC

Safety: designed in accordance with IEC61010-1

EMC: light industrial IEC 61326

Three-phase Transformer Winding Ohmmeter TWO320 is ideal tool for accurately measuring three-winding resistance of power transformers.

HAOMAI ELECTRIC TEST EQUIPMENT CO.,LTD, as a subsidiary of HAOMAI ELECTRIC POWER AUTOMATION CO.,LTD, located in Shenzhen of China, mainly focuses on the sales and services of Protection Relay Test Set, Instrument Transformer Test Set, CT/PT Analyzer, Power Transformer Test Set, Circuit Breaker Testing Equipment, Battery Testing Equipment, IEC 61850 Testing Equipment for Smart Substation, Partial Discharge Detector, Transformer Oil Dissolved Gas Analysis and Moisture Monitor etc. electrical test equipment and online monitoring equipment.

The headquarters, HAOMAI ELECTRIC POWER AUTOMATION is established in 1999 and located in Wuhan of China, which is specialized in developing and manufacturing electrical test equipment and online monitoring equipment. HAOMAI products are widely used in power grid, petrochemical, metallurgy, railway, coal mine, research institutes and all kinds of large-scale factories or enterprises.

HAOMAI follows total quality criteria, and always maintains standardized process and procedures for continuous growth. HAOMAI has been certified by ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018. All of HAOMAI products passed Type Test or Calibration in the third party laboratory accredited under ISO/IEC 17025.

HAOMAI builds own RELAYSTAR laboratory and performance test laboratory, and possesses professional production equipment and testing instruments in factory, such as Agilent 34401A 6 1/2 High-precision Meter, FLUKE Multi-meter, EMH Standard Meter, CLOU Standard Power Source, Oscilloscope, Phase Meter, Insulation Test System, High Voltage Dividers, AC High Voltage Generator, Time Calibration Tester, Standard Micro-resistance etc.

HAOMAI is China well-known mark recognized and approved by State Administration for Industry & Commerce of People's Republic of China, and enjoys high reputation in domestic and foreign markets.

HAOMAI now is the key supplier for SGCC(State Grid Corporation of China) and CSG(China Southern Power Grid). Till 2021 HAOMAI products have been sold to 39 different countries.

HAOMAI always sticks to the faith of "cooperation and sharing", takes the "technology and market" as the direction, "creation and innovation" as the soul, listens to clients carefully, and improves the technology, upgrades the products, optimizes the service and tries all to be the global leader in electrical test and measurement instruments field.