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I. Test Object and Requirement
The system is specially designed for AC withstand voltage test for below items, with below specifications and requirements.
| Test Object | Specifications | Capacitance | Test Frequency | Test Voltage | Test Time |
| Transformer | 6/66kV/25000kVA | ≤0.012uF | 45-65Hz | 112kV | 1min |
| Generator | 6kV/12MW | ≤0.1uF | 45-65Hz | 15kV | 1min |
II. Working Environment
l Environmental temperature: -15ºC to 45ºC
l Related humidity: ≤ 90% RH
l Altitude: ≤ 3km
III. Technical Data
l Rated capacity: 120kVA
l Input power supply: Single phase 220V or three phase 380V; 50Hz
l Rated voltage: 30kV; 120kVA
l Rated current: 4A; 1A
l Working Frequency: 30-300Hz
l Output waveform: sine wave
l Waveform distortion rate: ≤1%
l Working time: constant working of 5mins under rated load; working of 1min, under 1.1 times of rated voltage
l Temperature rise: ≤65K after constant working of 5mins under rated load
l Quality factor: Q ≥30 (f=45Hz)
l Protective function: overcurrent, overvoltage and flashover protections for test object.
l Accuracy: 1.5% (RMS)
| Combination utilization Test object |
HV Reactor 30kVA/30kV |
Selection of Excitation transformer output end |
Testing voltage(kV) |
| 6/66kV/25000kVA Transformer | 4 set reactors in series | 5kV | ≤112kV |
| 6kV/12MW Generator | 1 set reactor | 2.5kV | ≤15kV |
IV. Parameters for Individual Parts
1. Exciting Transformer GDJL-6kVA/2.5/5kV/0.4kV (1 set)
l Rated capacity: 6kVA
l Input voltage: 0-400V, single phase
l Output voltage: 2.5/5kV
l Type: Dry type transformer
l Weight: approx. 38kg
2. Variable frequency power supply GDTF -6kW/220/380V (1 set)
l Rated output capacity: 6kW
l Working power supply: 220/380±10%V (single/ three phase, power frequency)
l Output voltage: 0-400V, single phase
l Rated input current: 13A
l Rated output current: 13A
l Voltage resolution: 0.01kV
l Voltage measuring accuracy: 0.5%
l Frequency adjusting range: 30-300Hz
l Frequency adjusting resolution:≤ 0.1Hz
l Frequency stability: 0.1%
l Working time: constant working of 5mins under rated capacity.
l Temperature rise: ≤ 65K after constant working of 5mins under rated capacity.
l Noise: ≤50dB
l Weight: 10kg
3. HV Reactor GDDK-30kVA/30kV (4 sets)
Rated capacity: 30kVA
Rated voltage: 30kV
Rated current: 1A
Inductance: 100H (per set)
Quality factor: Q ≥30 (f=45Hz)
Type: Dry type transformer
Weight: approx. 50kg
4. Capactive Divider GDFR-120kV/800pF (1 set)
l Rated voltage: 120kV
l Capacitance: 800pF
l Dielectric loss: tgσ ≤0.5%
l Divider ratio: 1500:1
l Measuring accuracy: 1.5%
l Weight: approx. 9kg
5. Compensated capacitor GDBC-120kV/8000pF (1 set)
l Rated voltage: 120kV
l Capacitance: 8000pF
l Weight: approx. 10kg
V. Packing List
| No. | Name | Module No. & SPECS | Quantity |
| 1 | Exciting Transformer | GDJL-6kVA/2.5/5kV/0.4kV | 1 set |
| 2 | Variable frequency power supply | GDTF-6kW/220/380V | 1 set |
| 3 | HV Reactor | GDDK-30kVA/30kV | 4 sets |
| 4 | Capactive Divider | GDFR-120kV/800pF | 1 set |
| 5 | Compensated capacitor | GDBC-120kV/8000pF | 1 set |
| 6 | Connecting Cable | 1 set | |
| 7 | Factory Test Report | 1 copy | |
| 8 | User's Guide | 1 copy |
