Partial Discharge Detector

HTJF-9003 Ultrasonic Partial Discharge Detector

Used for on-line detection and localization of partial discharge in high voltage equipment

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Product Introduction

Portable multifunctional partial discharge tester is our company's technical personnel according to many years of local discharge testing experience, suitable for high voltage equipment partial discharge online detection and location.

The system is equipped with composite TEV sensor, uhf sensor, hf current transformer and high sensitivity ultrasonic sensor to collect partial discharge signals inside the high-pressure equipment. The system adopts multi-stage detection and frequency reduction technology to reduce the frequency of discharge signal, and USES high-speed AD conversion circuit to digitize the signal, and ensures the reliability of detection data through digital signal processing, adaptive filtering and other interference signal processing methods. By collecting different signals generated by partial discharge in different high voltage equipment, the running state of the equipment can be quickly charged. The instrument can be installed and tested under the running state of the equipment, without any influence on the normal operation of the equipment. It is convenient for the staff to timely evaluate the running state of the switch cabinet, and greatly improves the reliability, safety and effectiveness of the equipment running.

The portable multifunctional partial discharge tester consists of the main tester, TEV sensor, ultrasonic sensor, hf current transformer, uhf sensor and connecting wire.

Product Names:partial discharge detector、ultrasonic partial discharge detector

Product Parameters

TEV measurement

Sensor capacitive
Measuring range 0 ~ 60dBmV
Resolution ratio 1dB
Error ± 1dB
Detection bandwidth 5 ~ 70MHz
Maximum pulse/period 655
Threshold adjustment range 3 ~ 57dB

High-frequency current transformer

Detection frequency band 10kHz ~ 30MHz
Signal transmission mode 50 Ω coaxial cable
Detection sensitivity 10pC

Ultrasonic transducer

Measuring range -7dBμV ~ 68dBμV
Resolution ratio 1dB
Error ± 1dB
Sensor sensitivity - 65dB (0dB = 1volt/μbar RMS SPL)
Sensor center frequency 20 ~ 50kHz
Sensor diameter no greater than 50 mm
Heterodyne frequency 38.4kHz

Uhf sensor

Detection frequency band 300MHz ~ 1.5GHz
Signal transmission mode 50 Ω coaxial cable
Detection sensitivity 1dB
Gain > 65dbm

Using the environment

Altitude ≤ 3000m
Environment temperature -20 ~ 60℃
Relative humidity ≤ 95%

Hardware requirements

Shell with a protective case, the protection grade should be up to or better than IP53
Connector headphone jack, low voltage dc charger input, external ultrasonic sensor input
Weight > 3 kg
Display LED display, and can display battery status

1. The appearance of the product shall be subject to the actual product, Technical parameters and model are subject to change without notice. In case of misappropriation or copying, legal liability will be investigated.

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Product Characteristics

Product Picture

Product attachment drawing

Product Certificate

Enterprise products in strict accordance with international and national standards and rules of industry production, through the national, provincial and municipal electric power research institute and electric power authorities detection, measuring center, fully passed the ISO9001 international quality management system certification, the licence for manufacturing measuring instruments of the People's Republic of China, GB/T19001-2016 quality management system requirements, GB/T24001-2016 environmental management system requirements, GB/T45001-2020 occupational health and safety management system requirements.

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