Product Description
Transformer GIS SF6 switch CT/PT insulator bus bar cable bushing and others capacitive devices are the common primary electric equipments.
The complete set of frequency conversion series resonance test equipment is mainly used for ac withstand voltage test of cross-linked cable, hydraulic generator, main transformer, bus GIS etc.
The complete set of frequency conversion series resonance test equipment is mainly composed of frequency conversion control power, supply excitation ,transformer reactor ,capacitor voltage divider and compensation capacitor (optional).
Product Characteristics
1,The device has protection functions such as overvoltage overcurrent zero start system detuning (flashover) overvoltage and overcurrent protection values can be set according to user needs and flashover protection action when the sample flashes to protect the product.
2,The entire unit is lightweight and easy to use on site.
3,The device has three working modes which is convenient for the user to flexibly select according to the site conditions and improve the test speed. The working modes are: fully automatic mode manual mode and automatic tuning manual boost mode.
4,It can store and print data off-site and the stored data number is a number which is convenient for users to identify and find.
5,When the device is automatically swept the starting point of the frequency can be arbitrarily set within the specified range and the large screen of the liquid crystal displays the scanning curve which is convenient for the user to intuitively know whether to find the resonance point.
6,The DSP platform technology is adopted which can conveniently increase or decrease functions and upgrades according to user needs and also makes the human-machine exchange interface more humanized.
Product Parameters
The work environment
| Environment temperature | －100oC-50oC |
| Relative humidity | ≤90%RH |
| The altitude | ≤1000m |
Main technical parameters and functions of the device
| Rated Capacity | 324kVA |
| The input power | Three-phase 380V voltage frequency: 50Hz |
| Rated Voltage | 54kV |
| Rated current | 6A |
| Working frequency | 30-300Hz |
| Device output waveform | Sine wave |
| Waveform distortion rate | Output voltage waveform distortion rate ≤1% |
| Working time | Continuous 60min is allowed under rated load; Overvoltage 1.1 times 1 min |
| Temperature rise | Temperature rise ≤65K after continuous operation under rated load for 60min |
| The quality factor | Device Q≥30(f=45Hz) |
| Protection function | Over current over voltage and flashover protection (see frequency conversion power supply for details) |
| Accuracy of measurement | Effective value of the system is 1.5 |
Exciter transformer
| Rated Capacity | 9kVA |
| The input voltage | 0-400V,Single phase |
| The output voltage | 3kV |
| structure | dry type |
| Weight | About 50kg |
Variable frequency power supply
| Rated output capacity | 18kW |
| Working power supply | 380±10%V (three-phase) power frequency |
| The output voltage | 0-400v single phase |
| Rated input current | 45A |
| Rated output current | 45A |
| Voltage resolution | 0.01kV |
| Accuracy of voltage measurement | 1.5% |
| Frequency range | 30-300Hz |
| Frequency regulation resolution | ≤0.1Hz |
| Frequency stability | 0.1% |
| Running time | Continuous 60min at rated capacity |
| Noise level | ≤50dB |
High voltage reactor
| Rated Capacity | 54kVA |
| Rated Voltage | 27kV |
| Rated Voltage | 2A |
| inductance | 68 H/single section |
| The quality factor | Q≥30(f=45Hz) |
| structure | dry type |
| Weight | About 75kg |
Capacitor divider
| Rated voltage | 60kV |
| High piezoelectric capacity | 2500pF |
| Dielectric loss | tgσ≤0.5% |
| Voltage division ratio | 1000:1 |
| measurement accuracy | Valid value of 1.5 |
| Weight | About 10kg |
