Application
The Impulse voltage generator test system is mainly is sutable for 35KV or below 35KV voltage level standard full-wave lightning impulse voltage test of large capacity power transformers, transformers, reactors, arrester, switch, casing, insulator and other test materials.
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-300KV/20KJ)
300KV/20KJ Full wave impulse device, 300kV Chopping device, 300KV 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 (300kV/20kJ)
-Main technical parameters
-Nominal lightning impulse voltage: 300kV
-Nominal capacity (energy): 20kJ
-Capacitance per stage: 1.33μF, 100kV
-Voltage per stage: ± 100kV
-Number of stages/ Capacity per stage: 3 /6.66kJ
-Output waveform:
-1.2±30%/50±20%μ S standard lightning impulse voltage full wave, oscillation amplitude at peak value≤5%
-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 = 50mA (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: 300kV/300pF
-Rated voltage: 300kV
-Rated capacitance: 300pF
-Stage of capacitor: 1 stage
-Capacitance per stage: 300pF
-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: 300kV
-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
-Chooped wave resistance 1 pc
5. Signal analyze auto-testing system
-Model: DIMS-300
-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
0.1Hz VLF AC/DC Hipot tester
