Features and Advantages
1.The lightning impulse voltage test device for impulse voltage generator mainly consists of an impulse voltage generator, a weak damping impulse capacitor voltage divider, an impulse voltage generator control system, a cut-off device, and a digital impulse measurement system. Mainly suitable for lightning impulse voltage full wave test of 35kV power transformers and below power products, it can also be used for lightning impulse full wave, operating wave, truncated wave, oscillation wave and other special waveform impulse tests.
2.The main structure adopts the structural design of the world-renowned company HAEFELY, which is currently the most compact generator in China. It has the characteristics of small inherent inductance and convenient modulation.
3.The core component is the FX series programmable controller from Mitsubishi Corporation in Japan, and almost all control functions are implemented through software programming. Therefore, the system structure is simple, with very few peripheral circuit boards, and extremely high reliability.
4.Integrated design of measurement and control structure, equipped with peak voltage meter and LCD display industrial computer, capable of fully automatic control, measurement and analysis. The measurement and control system adopts LCD touch screen operation, with multiple status prompt screens, achieving intelligent human-machine dialogue operation.
5.The fiber optic control transmission system used is the first in China’s high-voltage testing equipment. It realizes the fiber optic connection between the control measurement equipment and the high-voltage main equipment, effectively solving the harm of ground potential rise to the measurement and control system encountered in high-voltage testing, eliminating electromagnetic interference caused by control leads, and greatly improving the reliability of the system.
6.The electronic delay circuit used in the cut-off delay adjustment method can easily obtain a cut-off trigger delay of 2-6us, which is more convenient and simple compared to the method using delay cables.A pulse amplifier capable of generating a 15kV, 100ns rising edge is used to trigger the cutoff gap, ensuring a cutoff time dispersion of less than 0.1us.
7.The system has designed a dedicated program operation screen to facilitate the full wave and truncated wave tests of transformers, greatly simplifying the operation of test personnel and effectively preventing human errors.
8.The impulse voltage generator test system adopts advanced technology, good craftsmanship, and high-quality raw materials, which can ensure long-term use and operate for more than 20 years. The normal operating cost is also very low.
Parameter
- Main parameters of impulse voltage generator
- Rectifier charging power source
- Weakly damped impulse capacitor voltage divider
- Cut off device
- Measurement Equipment
| Main parameters of impulse voltage generator | |
| Nominal lightning impulse voltage | 400kV |
| Nominal Capacity | 20kJ |
| Stage capacitor | 2μF,100kV（MWF-100kV-2μF), Dry type full insulation package |
| Stage Voltage | ±100kV |
| Stage/ stage capacity | 4/5kJ |
| Output waveform | 1.2±30%/50±20% μs a full-wave of standard lightning impulse voltage, the efficiency is more than 90%. |
| Synchronizing range | >20% |
| Continuous utilization time | Continuously work when the rated working voltage is less than 80% |
| Intermittently work when the rated working voltage is greater than 80% | |
| Amplitude adjustment error voltage difference less than 1%, minimum output voltage less than 10% of equipment nominal voltage | |
| Synchronous error rate | <1% |
| Base support | 2.0m*15m, castor mobile |
| Height/Weight | about 2.5m/450kg |
| Rectifier charging power source(integration with impulse main body) | |
| Model | LGR-100/50 |
| Rated Voltage | Un =100kV DC(Positive or negative polarity) |
| Rated Current | In = 50mA(under rated voltage) |
| Voltage Control | Thyristor module voltage regulation, voltage regulation range 0～100% Un |
| Polarity conversion | manually change the direction of the high voltage silicon reactor |
| High voltage silicon stack | 2DL-200kV/200mA |
| Input Voltage | 220V single phase voltage |
| Power Frequency | 50/60 ZC |
| Power consumption | about 5kW |
| Weakly damped impulse capacitor voltage divider | |
| Model | CR-400/600 |
| Rated Voltage | 400kV |
| Rated Capacitance | 600pF |
| Qty of capacitance | 1 pcs |
| Capacitance of each | 600pF(MWF400-600 pulse capacitor) |
| Square-wave response | partial response time is less than 100ns and overshoot impulse is less than 10% |
| Voltage division ratio | uncertainty of undetermined |
| Voltage division ratio | <1% |
| Cut off device | |
| Model | MC300kV |
| Rated voltage | 300kV |
| Ball gap form | 300mm diameter hemispherical gap |
| Trigger method | Three electrode discharge trigger(Using high-performance pulse amplifier to output 15kV, 100ns trigger pulse) |
| Time delay mode | 2-6us. The electronic delay circuit with adjustable time delay provides cutoff trigger pulses (In conjunction with the IGCS2008 control system, the potentiometer fine tunes the cutoff delay time) |
| Chopping dispersion | The standard deviation of chopping time is less than 0.1us |
| Measurement Equipment | |
| Model | DIMS-1000 Digital impulse measurement system |
| Input range | 120V~1600V (impulse voltage) |
| Inaccuracy of measurement | less than 1% |
| Waveform Measurement | TBS2012 digital oscilloscope |
| The highest sampling rate is 1.0GS /s, the bandwidth is greater than 100MZC, and the resolution is 8bit, record length is 10k bytes (which can meet the requirement of impulse test) , 2 channels | |
Related Products
-
ZC-521-300kV/30kJ Full Automatic Impulse Voltage Generator
-
ZC-521-800kV/80kJ Lighting Impulse Test Device
-
ZCVF-6000kVA/1000kV Variable Frequency Resonant Test System
-
ZCVF-C-240kVA/240kV Adjustable Inductance Series Resonant Test System
-
ZCVF-W-150kW Transformer Partial Discharge Induction Withstand Voltage Test System
