Ningbo Suntech Power Machinery Tools Co.,Ltd. |
Verified Suppliers
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Equipment use relation table during test
Equipment combination test object | 1500kVA/300kV/5A/200H Reactor three sections | Excitation transformer output selection | |
AC withstand voltage test of 500kV and below substation equipment,
etc., the test voltage is 900kV | The capacitance does not exceed 0.03μF | Use three reactors in series | 35kV |
110kV/630mm² cable 2km, test voltage 128kV | 0.376μF | Use three reactors in parallel | 5kV |
220kV/630mm² cable 2km, test voltage 216kV | 0.276μF | Use three reactors in parallel | 10kV |
Compatible with 110kV main transformer neutral point AC withstand
voltage test, test voltage 140kV | 0.025μF | Single section using reactor | 5kV或10kV |
Compatible with 220kV main transformer neutral point AC withstand
voltage test, test voltage 160kV | 0.025μF | Single section using reactor | 5kV或10kV |
Compatible with 110kV voltage level GIS withstand voltage test,
test voltage 270kV | 0.03μF | Single section using reactor | 10kV |
Compatible with 220kV voltage level GIS withstand voltage test,
test voltage 495kV | 0.03μF | Use two strings of reactors | 20kV |
2,Main technical parameters of equipment
System technical indicators
Rated working input power: 380V±10% (three-phase); 50Hz
Rated output power of variable frequency power supply: 400kW
Rated output capacity: 4500kVA
Rated output voltage: 900kV
Output phase number: single phase
Frequency adjustable range: 20Hz~400Hz, when the frequency is
adjusted within the set range, the voltage is constant output
Output frequency resolution: 0.01Hz
Output frequency instability: ≤0.05%
The output voltage waveform is a sine wave: waveform distortion
rate ≤1.0%
Running time: 60min continuous running under rated capacity
Insulation level: withstand voltage for 1 min under 1.1 times the
rated voltage
Quality factor: Q>60 (f=30Hz)
Variable frequency power supply capacity: 400kW (push-pull linear
amplifier)
3,Main functions of the system:
1) The variable frequency power supply adopts a linear power
amplifier circuit, which has a perfect sine wave output and low
waveform distortion
2) With automatic voltage stabilization adjustment function
3) Safe and reliable. A variety of protections are integrated in
this device, including: discharge breakdown protection,
over-voltage, over-current setting protection, output short-circuit
protection, boot zero protection, bridge arm amplifier circuit
protection, power curve protection, etc. When any kind of
protection appears, the device immediately blocks the test voltage
output and cuts off the main circuit power supply to ensure the
safety of the test personnel, the tested product and the test
system
4) The high-voltage measurement signal is transmitted by optical
fiber to completely isolate the high-voltage and low-voltage
circuits
5) Two control modes: automatic/manual
6) 320*240 dot liquid crystal display and multiple rotating mice
provide a friendly man-machine interface, easy and quick operation
and wiring, and truly "just look at it"
7) Synchronous voltage, current and frequency display
8) The output frequency is continuously adjustable within the range
of 20-300Hz
9) The output voltage is continuously adjustable within the range
of 0~350V
10) With resonance withstand voltage test function
11) With automatic resonant frequency search function, multiple
automatic frequency sweeping frequency bands can be set
4,System display function:
1) With a large screen display, it can indicate: output voltage,
output current, frequency, ambient temperature, outlet air
temperature, variable frequency power supply output voltage
waveform, date and time, countdown time, fault information, etc.;
2) It has the function of setting test parameters such as test
voltage and time;
5,Other features of the product:
1) The oil-filled equipment in the device does not leak oil.
2) All metal shells in the device are rust-proof and anti-corrosion
treatment, and the coating is uniform and beautiful. The main
components have stainless steel nameplates and terminal signs.
3) The device can be stored, assembled and disassembled indoors and
outdoors; the protection function is complete. The manufacturer
guarantees that the control equipment, transformers, reactors, etc.
of the device are at 1.1 times the rated voltage, and if the
high-voltage side sample flashovers to the ground during the test,
it will not cause personal injury and the test equipment will not
cause harmful mechanical and thermal stress. Electrical performance
is damaged or damaged.
4) Each part of the equipment has a nameplate that conforms to the
national standard, the words and symbols are clear and durable, and
the nameplate is clearly visible when the equipment is in normal
operation.