I Description
Variable-frequency resonance voltage raising device makes reactor and capacitor achieve resonance by adjusting frequency of power, and then obtain high voltage and big current on the test objects.
This variable-frequency series-resonant voltage withstand test equipment is portable type, special for test cables. Weight of single part is not more than 60kg which can be moved by two people or not more than 30kg moved by one people.
The system is comprised of frequency power, exciting transformer, reactors and voltage divider. Reactors are dry resin casted type, suitable for different cable tests.
II Main parameters
l Rated output voltage: 0~130kV
l Output frequency: 20~300Hz
l Resonance voltage wave: sine wave, aberration rate is less than 1%
l Full-load working duration: continuous 60 minutes
l System quality factor: more than 20 under max. load
l Frequency adjustment fineness: 0.1Hz, instability less than 0.01%
l Power source: 220V or 380V normal electric supply
III Configuration & test objects
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Code
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Basic configurations
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Suitable cables
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Frequency power
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Reactor
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Exciting transformer
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Voltage divider
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ZXZ-44/22
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2.5kW
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1A/220kV, 2 sets
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2.5kVA/1kV
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25kV
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10kV 300mm2 ≤1km
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ZXZ-88/22
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4kW
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2A/22kV, 2 sets
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4kVA/1kV
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25kV
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10kV 300mm2 ≤2km
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ZXZ-132/22
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6kW
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2A/22kV, 3sets
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6kVA/1/3kV
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70kV
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10kV 300mm2 ≤3km
35kV,300mm2 ≤0.7km
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ZXZ-198/22
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10kW
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1.5A/22kV, 6sets
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10kVA/1/3kV
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70kV
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10kV 300mm2 ≤4km
35kV,300mm2 ≤1km
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ZXZ-264/22
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15kW
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2A/22kV, 6sets
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15kVA/1/3kV
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70kV
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10kV 300mm2 ≤4km
35kV,300mm2 ≤1km
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ZXZ-396/22
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15kW
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3A/22kV, 6sets
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15kVA/1/3kV
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130kV
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10kV 300mm2 ≤8km
35kV,300mm2 ≤2km
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ZXZ-640/22
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25kW
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2.5A/32kV, 8sets
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25kVA/1/3/5kV
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130kV
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10kV 300mm2 ≤10km
35kV,300mm2 ≤3km
110kV,400mm2 ≤1km
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ZXZ-1280/22
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50kW
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5A/32kV, 8sets
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50kVA/1/3/5kV
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130kV
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10kV 300mm2 ≤20km
35kV,300mm2 ≤8km
110kV,400mm2 ≤2km
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