Partial Discharge Detector

Model: HJF-500

The Partial Discharge Detector HJF-500 is non-invasive tool for measuring partial discharge activity of Switchgear, Transformer, GIS and HV cable etc. in running state. It is equipped with one built-in TEV(Transient Earth Voltage) sensor and one built-in Ultrasonic sensor, one external Ultrasonic sensor, one external UHF(Ultra High Frequency) sensor and one external HFCT(High Frequency Current Transformer) to collect partial discharge signals on medium voltage or high voltage equipment.

Main Features

●Non-invasive tool for online PD measurement in MV and HV substations

●Able to equip with 5 sensors, including 1 built-in TEV sensor(standard configuration), 1 built-in ultrasonic sensors(standard configuration), 1 external ultrasonic sensor(option configuration), 1 external UHF sensor(option configuration), 1 HFCT sensor(option configuration).

●Combines multiple functions in a single package

●Ultrasonic and TEV sensors for surface and internal PD

●UHF measurement can accurately measure PD activity in high bandwidth

●PD activity in HV cables is measured by using HFCT

●High sampling rate, strong anti-interference ability

●Provide time domain signal waveform, PRPD spectrum, PRPS spectrum etc. discharge patterns to realize the analysis of different discharge types.

●The test results can be stored on board, also can be uploaded to PC for generated test report.

Technical Data

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.