
China Best Sales High Voltage Cable Partial Discharge Monitoring System
Product Introduction
Through the fine control of the whole process of product production, we provide our customers with cost-effective sf6 gas purity analyser, 3 Phase Primary Current Injection Test Set, ttr turns ratio tester. Our company has a mature design level in product design and production. Over the years, we have won wide praise for our excellent quality and professional service attitude. As our service tenet said we do what we said ,serve attentively. We aim to be your long-term partner. With broad demestic and international sales network and responsible after-sales service team, we gain the initiative in the fierce markets competition. As one of the leading enterprises in the industry, we actively undertake relevant responsibilities and contribute to the healthy, sustainable and high-level development of the industry.
HZ-9003C Handheld Multifunctional Partial Discharge Tester
Overview
The HZ-9003C multifunctional partial discharge tester is designed for on-line detection and location of partial discharge in high-voltage equipment. It is developed based on our extensive experience in the field of partial discharge measurement.




System Overview
The system is equipped with composite TEV sensors, ultra-high frequency (UHF) sensors, high-frequency current transformers (HFCT), and high-sensitivity ultrasonic sensors to collect partial discharge signals from high-voltage equipment. It employs multilevel detection frequency reduction techniques to lower the discharge frequency of signals, while utilizing high-speed AD conversion circuits for signal digitization. Digital signal processing and adaptive filtering interference suppression methods ensure the reliability of test data.
By collecting various signals generated by partial discharge in different high-voltage equipment, the system enables rapid assessment of equipment operating status. The tester can be installed for online detection without affecting equipment operation, allowing workers to promptly evaluate switchgear cabinet conditions. This significantly improves equipment operational reliability, safety, and effectiveness.
System Components
The HZ-9003C includes:
Device host
Specialized partial discharge detection software
TEV sensor
Ultrasonic sensor (USS)
Ultrasonic concentrator (ELTW)
High-frequency current transformer (HFCT)
UHF sensor
Earphone and connecting cables
Technical Data
Composite TEV measurement | |
Sensor | Capacitive |
Range | 0~60dBmV |
Resolution | 1dB |
Error | ±1dB |
Detection Bandwidth | 5~70MHz |
Pulse/Cycle maximum | 655 |
Threshold adjustment range | 3~57dB |
High frequency current transformer | |
Detection Bandwidth | 10kHz~30MHz |
Signal transit mode | 50Ω cable |
Detection sensitivity | 10pC |
Ultrasonic concentrator | |
Measurement range | -7dBμV~68 dBμV |
Resolution | 1dB |
Error | ±1dB |
Sensor sensitivity | -65dB (0dB = 1volt/μbar effective value SPL) |
Sensor central frequency | 20~50kHz |
Sensor diameter | no more than 50mm |
Heterodyne frequency | 38.4kHz |
Non - contact ultrasonic energy collector | |
Effective acceptance distance | 30m |
Sensor center frequency | 40 kHz |
Diameter of sensor | 16mm |
External diameter of parabolic reflector | 275mm |
Standard diameter of parabolic reflector | 250mm |
Weight | 0.6kg |
Ultrahigh frequency sensor | |
Detection bandwidth | 300MHz~1.5GHz |
Signal transit mode | 50Ω cable |
Detection sensitivity | 1dB |
Gain | >65dbm |
Anti-interference Earphone Mic | |
Earphone Mic | vivo |



We design and manufacture each China Best Sales High Voltage Cable Partial Discharge Monitoring System with excellent manufacturing equipment, highly qualified engineers and technicians to ensure the best performance. Please contact us if you need more information. Our company strengthens the staff training and provides the promotion opportunity, strengthens the staff incentive restraint mechanism, implements the humanized management to the staff.
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