Products video
HMCJ 900kV 90kJ Impulse Voltage Tester Display Video
Product Overview
The HMCJ 900 kV/90 kJ is a high-voltage impulse test system primarily used for lightning full-wave and switching impulse tests on power products such as high-voltage switchgear, circuit breakers, and load switches rated at 10 kV to 110 kV and below, to evaluate the products' impulse insulation levels. The equipment features a 9-level H-type tower structure, with a rated voltage of ±900 kV and a rated energy of 90 kJ. It is designed for indoor use and complies with multiple national and industry standards (GB/T 16927, GB 311, etc.).
product Parameter
- Nominal Voltage ±900 kV
- Rated Stage Voltage ±100 kV (9 stages)
- Nominal Energy 90 kJ
- Total Capacitance 0.222 μF (2.0 μF/100 kV per unit, 9 units total)
- Stage Capacitance 2.0 μF
- Stage Energy 10 kJ
- Load Capacitance Range 300–4000 pF
- Output Waveforms Standard lightning full-wave (1.2±30% / 50±20% μs), switching wave (250±20% / 2500±60% μs)
- Voltage Utilization Factor ≥90% (lightning, 2000 pF or less); ≥85% (lightning, 4000 pF or less)
- ≥75% (operating wave, 2000 pF or less); ≥70% (operating wave, 4000 pF or less)
- Synchronization Range ≥20% (20%–100% of rated voltage)
- Failure Rate ≤2%
- Body Inductance ≤55 μH
- Charging Voltage Instability ≤±3.0%
- Voltage Accuracy ≤1.0%
- Voltage Divider Response Time Ta ≤ 100 ns
- Voltage Division Ratio Accuracy ≤±1.0%
- Continuous Operation Capability One charge-discharge cycle every 120 seconds at 70% or more of rated voltage; continuous operation possible at less than 70%
Main features
- Structural Design
- 9-tier tower-style stacking for easy assembly and disassembly, ensuring stability and reliability.
- Bilateral symmetrical constant-current charging; the charging transformer, rectifier diode stack, and main unit are integrated into a single assembly.
- Electric adjustment of the spark gap distance, supporting manual/automatic control, and featuring an automatic tracking function.
- Charging and Rectification
- Oil-immersed charging transformer (8 kVA/50 kV); high-voltage diode stack reverse voltage ≥ 300 kV.
- Automatic polarity switching; charging voltage adjustability accuracy of 1%; stability ≤ ±1%.
- Wave Shaping and Resistors
- The wavefront and wave-tail resistors feature a non-inductive plate-type structure with self-inductance ≤ 2.5 μH; they can be used in parallel and offer high versatility.
- Equipped with a complete set of wave-shaping resistors for lightning and switching waves.
- Low-damping capacitive voltage divider
- 900 kV/300 pF, non-inductive design, with an equalizing ring and a mobile chassis.
- Square-wave response complies with GB 311; scale factor uncertainty ≤ ±1%.
- Intelligent Measurement and Control System (YMT-7721)
- Based on a Siemens PLC and industrial PC, it provides fully automatic control of charging, discharging, polarity switching, and ball-to-ball distance tracking.
- Equipped with a Tektronix TBS2000 oscilloscope (100 MHz, 1.25 GS/s) and dedicated ATS measurement software for automatic data acquisition, analysis, and report generation.
- Features overvoltage/overcurrent protection, emergency tripping, automatic grounding, and remote communication (fiber optic).
- Safety and Scalability
- Automatic grounding device, anti-corona design, and seismic resistance up to magnitude 8.
- The mounting frame and charging units are scalable and support multi-level parallel operation.
- After-Sales Service
- One-year free warranty, lifetime maintenance, and on-site response within 24 hours.
- Free on-site training and long-term free upgrades to the measurement software are provided.
Products Description
Optimized for Global Clients This system combines cutting - edge technology with robust safety features, making it the ultimate solution for high - voltage impulse testing in power equipment R&D and quality assurance.
Keywords: Lightning Impulse Voltage Generator, High Voltage Testing Equipment, Insulation Testing, IEC - Compliant, 1800kV/180kJ, Steep - Front Impulse Waves.
Hot Tags: compact 900kv impulse voltage test system, China compact 900kv impulse voltage test system manufacturers, factory
