I. Test Object and Requirement
The system is specially designed for PD-free AC withstand voltage test for electric generator, capacitance of single phase to ground is 0.4-1.2uF, test voltage is no more than 24kV.
II. Working Environment
- Environmental temperature: -10ºC to 50ºC
- Related humidity: ≤ 90% RH
- Altitude: ≤ 1km
Product Parameters
III. Technical Data & Functions
- Rated capacity: 225kVA
- Input power supply: Single phase 380V; 50Hz
- Rated voltage: 25kV
- Rated current: 9A
- Working Frequency: Power frequency 50Hz
- Output voltage Waveform distortion rate: ≤0.5%
- Working time: continuous working of 15min under rated load.
- Temperature rise: ≤65K after continuous working of 15min under rated load
- Quality factor: Q ≥10
- Accuracy: 1.5% (RMS)
- Protective function: over-current, over-voltage and flashover protections for test object.
- Partial discharge amount: ≤5PC
IV. Applied Standard
GB10229-88 Reactor
GB1094 Power transformers
GB50150-91 Standard for hand-over test of electric equipment installation engineering
DL/T 596-1996 Preventive test regulation of electric equipment
GB1094.1-GB1094.6-96 Protection class of Shell
GB2900 Electrotechnical terminology
GB/T16927.1~2-1997 High voltage testing technique
V. Test Power Supply, L and Cx Relationship Table
| Capacitance range of test object (Cx) |
Adjustable range of reactor
(L) |
| 0.4~1.2uF |
8H~26H |
Note: Cx is capacitance of test object.
PD-free AC power frequency withstand voltage test: adopts series resonant test device to make AC withstand voltage test and dielectric loss test for generator.
Reactor selection
| Reactor |
Rated capacitance (kVA)
|
Rated Voltage(kV) |
Rated Current
(A) |
Capacitance range (uF) |
Inductance range(H) |
| Adjustable reactor 1 set |
225kVA |
25kV |
9A |
0.4~1.2 |
8~26H |
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