
100kVA Partial Discharge Testing Transformer Oil Hv Test Equipment Inflatable
Product Introduction
We adhere to the faith of integrity, quality and service, and cooperate with many years of manufacturing experience to research, so that the specifications of our winding resistance test set, flash point test equipment, vlf hipot test set are constantly innovating. Now the competition in this field is very fierce; but we will still offer best quality, reasonable price and most considerate service in an endeavor to achieve win-win goal. Corporate culture permeates all aspects of business management, embodied in the thoughts and behaviors of employees, and guides the development of the company. The company is equipped with a competent and experienced sales and after-sales service team to provide customers with strong technical support and timely after-sales service. We create more favorable value for customers with precise work flow and strict quality management.
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 constantly innovate in the 100kVA Partial Discharge Testing Transformer Oil Hv Test Equipment Inflatable field, continuing to exceed customer expectations, and make unremitting efforts to achieve sustainable development. Externally, we are brave enough to participate in domestic and international market competition, and keep developing and growing in the competition, so that the company is full of vitality and vigor. Since its foundation, our company has always adopted the latest technologies , designed and developed the products according to customers'r equirements, providing global after-sale service for customers.
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