Application

This lightning impulse voltage generator test system device is mainly applicable to the test and research of various standard waveforms of lightning impulse voltage of ≤10kV and ≤12.5KV high and medium voltage distribution system electrical products and power equipment.

Woking condition:

1.Altitude≤2000m

2.Environment temperature: －15℃~50℃

3.Relative humidity≤90%

4.Installation place: indoor type, movable

5.Ground resistance＜0.3Ω

Test equipment included in the test system

200KV/10KJ Full wave impulse device, 200kV Chopping device, 200KV Capacitive voltage divider, 100KV/50mA Rectifier Transformer, Measurement&control system(including Lighting impulse voltage Test Bench, TDS3012C Oscilloscope, IPM-24 Peak volmeter, 1 set Attenuator , printer, control&measurement software, etc.)

1. Impulse voltage generator (Main body: 200kV/10kJ)

u Main technical parameters

u Nominal lightning impulse voltage: 200kV

u Nominal capacity (energy): 10kJ

u Capacitance per stage: 1.0μF(50kv-1.0μF pulse capacitor)

dry fully insulated package

u Voltage per stage: ± 100kV

u Number of stages/ Capacity per stage: 2 /5kJ

u Output waveform:

When the load capacitance is less than 5500pF (including voltage divider capacitance),

number of standard lightning impulse voltage waveforms 3 (B & C waveform for buyer’s optional)

A. Standard lightning impulse full wave voltage waveform

Wave head time: 1.2 ± 30% μ s

Wave tail time: 50 ± 20% μ s

Overshoot: less than 5%

Efficiency: not less than 90%

2 / 50 μ s standard lightning impulse voltage full wave, the efficiency is more than 90%.

B. Standard lightning impulse chopping voltage waveform

Wave head time: 1.2 ± 30% μ s

Overshoot: less than 5%

Chopping time: 2 ~ 6 μ s, electronic time delay control

Efficiency: not less than 90%

Chopping wave is less than 100ns

C. Full wave waveform of damage indication current for lightning impulse voltage test

u Min. output voltage≤10 %Un

u Generator efficiency≥ 90%;

u Triggering range: ≥ 20%

u Working Duration:

u continuous operation ＞70％Un, charge&discharge every 90s

u continuous operation ＜70％Un, charge&discharge every 60s

u Instability of output peak voltage≤1.0 %, the lowest output ≤10% of the nominal voltage of the device.

u Malfunction rate while synchronous discharge＜2 ％

u Ignition range: 10％～100％

u Chopping device can produce cut-off lightning wave with a cut-off time of 2 ~ 6 μ s, and the dispersion of the cut-off wave is less than 100ns.

u Base: 2.5m × 1.3m, caster moving.

u Height: About 1.3m. Weight: about 580kg

2. Auto charging power supply

u Model No.: LGR-100/50

u Rated voltage:  Un = 50kV DC (Positive or negative polarity)

u Rated current:  In = 100mA (Under rated voltage)

u Voltage control: Controllable constant current charge, regulate range 0~100% Un

u Polarity conversion: Auto convert path of high voltage silicon stack

u Input voltage: 220V, single-phase

u Frequency: 50/60Hz

u Power supply capacity: 5kVA

u power supply resistance: 1 set

3. Weak damping capacitive voltage divider 

u Model: 200kV/200pF

u Rated voltage: 200kV

u Rated capacitance: 200pF

u Stage of capacitor: 1 stage

u Capacitance per stage: 200pF

u Square wave response: Partial response time is less than 100ns, overshoot is less than 20%

u Voltage division uncertainty: Less than 1.0%

4. Chopping device (for buyer’s option)

u Rated Voltage: 200kV

u Sphere gap type: Ф150mm

u Time delay mode: 2-6us time delay adjustable circuit provide chopping trigger pulse.

u Chopping wave dispersibility: Chopping wave time standard error is less than 0.1us.

u Sphere gap Qty: 1 set

u chooped wave resistance 1 pc

5. Signal analyze auto-testing control system

u Waveform test: TDS3012C digital oscilloscope

Max. sample rate 1.0GS/s, 100MHz bandwidth,

 resolution 8bit

        Record length 2.5K byte, 2 channels

u 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              

6. Standard

u IEC 60060-1

u IEC 60076-3

u IEC 62271-1

u IEC 62271-200

u Test transformer (JB / T9641-1999)

u Gb1094-2003 power transformer

u GB / T509-1997 power transformer test guide

u DL / T596 / 1996 code for preventive test of electric power equipment

u GB311.1-1997 insulation coordination of high voltage transmission and transformation equipment

u GB / T16927.1-1997 high voltage test technology general test requirements

u GB / T16927.2-1997 high voltage test technology measurement system

u Digital recorder for high voltage impulse test

u ZB F24 001-90 implementation rules for impulse voltage measurement

u Gb191 packaging and transportation marks

u JB / T563 technical conditions for ordering coupling capacitors and capacitor voltage dividers

u GB4208 enclosure protection level

u GB813-89 oscilloscope and peak meter for impact test

u GB7449-87 test guide for lightning impulse and operation impulse of power transformers and reactors

u JB / T501 power transformer test guide

u Transformer test technology (JB / t501-1991)

u IEC60-1 and IEC60-2 high voltage test technology

u GB50150-91 standard for hand over test of electrical equipment in electrical equipment installation engineering

u DL / t557-94 high voltage line insulator steep wave impact test, definition, test method and criteria

u DL / T 848.5-2004 general specification for high voltage test equipment Part 5: impulse voltage generator

u DL / T 846.1-2003 general specification for high voltage test equipment Part 1: high voltage divider measurement system

u DL / T 846.2-2004 general specification for high voltage testing equipment Part 2: impulse voltage measuring system