The Impulse voltage generator test system is mainly suitable for testing 36KV or below instrument transformer lightning impulse voltage set.
Woking condition:
1.Altitude≤1000m
2.Environment temperature: －5℃~40℃
3.Relative humidity≤90%
4.Installation place: indoor type
5.Ground resistance＜0.5Ω
Standard
-IEC 60060-1
-IEC 60076-3
-IEC 62271-1
-IEC 62271-200
Test equipment included in the test system(Model: DWCJ-III)
400KV/30KJ Full wave impulse device, 400kV Chopping device, 400KV Capacitive voltage divider, LGR-100/50 Rectifier Transformer, Measurement&control system(including Lighting impulse voltage Test Bench, TDS3012C Oscilloscope, IPM-24 Peak volmeter, 2 pcs Attenuator , printer, control&measurement software, etc.)
1. Impulse voltage generator (,400kV/30kJ)
Main technical parameters
Nominal lightning impulse voltage: 400kV
Nominal capacity (energy): 30kJ
Capacitance per stage: 1.5μF, 100kV
Voltage per stage: ± 100kV
Number of stages/ Capacity per stage: 4 /7. 5kJ
Output waveform:
- 1.2±30%/50±20%μ S standard lightning impulse voltage full wave, oscillation amplitude at peak value≤5%
- 250±20% / 2500±60%μs standard lightning impulse operating wave.
Min. output voltage≤10 %Un
Generator efficiency≥ 90%;
Triggering range: ≥ 20%
Working Duration:
Continuous operation ＞70％Un, charge&discharge every 90s
Continuous operation ＜70％Un, charge&discharge every 60s
The instability of output peak voltage≤1.0 %, the lowest output ≤10% of the nominal voltage of the device.
Malfunction rate while synchronous discharge＜2 ％
Ignition range: 10％～100％
2. Rectifier charging power supply
Model No.: LGR-100/50
Rated voltage: Un = 100kV DC (Positive or negative polarity)
Rated current: In = 100mA (Under rated voltage)
Voltage control: Controllable constant current charge, regulate range 0~100% Un
Polarity conversion: Auto convert path of high voltage silicon stack
Input voltage: 220V, single-phase
Frequency: 50/60Hz
Power supply capacity: 5kVA
power supply resistance: 3 pcs
3. Low damping capacitive voltage divider
Model: 400kV/400pF
Rated voltage: 400kV
Rated capacitance: 400pF
Stage of capacitor: 1 stage
Capacitance per stage: 400pF
Square wave response: Partial response time is less than 100ns, overshoot is less than 20%
Voltage division uncertainty: Less than 1%
4. Chopping device
Rated Voltage: 400kV
Sphere gap type: Diameter 300mm hemisphere gap
Time delay mode: 2-6us time delay adjustable circuit provide chopping trigger pulse.
Chopping wave dispersibility: Chopping wave time standard error is less than 0.1us.
Sphere gap Qty: 2 pcs
Chopping wave resistance 1 pc
5. Signal analyze auto-testing system
Model: DIMS-400
Waveform test: TDS3012C digital oscilloscope
Max. sample rate 1.0GS/s, 100MHz bandwidth, resolution 8bit
Record length 2.5K byte, 2 channels
Waveform analyzation:
Industrial control computer and LCD display
Impulse test software
Display and calculate impulse waveform parameters
Waveform comparison function
Waveform amplification, shrink and translation
Store and invoking of waveform
Auto-generated test report in picture format
Accessories
|
Sr no
|
Description
|
Qty
|
Remark
|
|
1
|
300KV Lightning Impulse Generator’s body
|
1
|
Unit
|
|
2
|
100KV/50mA Rectifier Charging Power Supply Device (Rectifier Transformer)
|
1
|
Unit
|
|
3
|
300kV Capacitive Divider
|
1
|
Unit
|
|
4
|
300KV Choping Device
|
1
|
Unit
|
|
5
|
Control system
|
Control bench
|
1
|
Unit
|
|
Oscilloscope
|
1
|
Unit
|
|
Peak Volmeter
|
1
|
Unit
|
|
Software for control,measuring and print
|
1
|
Unit
|
|
6
|
Attenuator
|
2
|
Unit
|
|
7
|
Wave head Resistor
|
1
|
Set
|
|
8
|
Wave tail Resistor
|
1
|
Set
|
|
9
|
Calibration report
|
1
|
Unit
|
|
10
|
Opearting manual
|
1
|
Unit
|
0.1Hz VLF AC/DC Hipot tester
