LCG M series automatic square wave impulse current test system adopts two-path 10-level LC chain circuit to output square wave impulse current with 2ms duration. This system is mainly used for 2ms square wave impulse current withstand test for MOV. Controlled automatically, it is featured with high system integration and intelligence and easy operation. Setting test requirements on parameters setting page, test can be conducted with one button.
> color touch screen, easy operation
> PLC control system, powerful and stable immunity system
> controlled by manual, automatic or programmable to different test requirements
> 10 level LC chain to consist square wave circuit, smooth waveform with little oscillatory
> controlled silicon continuous current for charging to save energy
> protection function, visual and audible alarm
> measure and analyze waveform parameters automatically
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Technical parameters |
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Item |
2ms square wave current |
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Output peak |
1KA，2KA，3KA，4KA，5KA |
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Td duration |
2ms（-0%﹢20%） |
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Attenuation time |
＜Td×1.5 |
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Reversed overshoot |
-- |
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Wave-front oscillatory |
＜5% |
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Voltage polarity |
+/-,（Switch automatically） |
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Waveform switch |
Switch automatically |
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Charging time |
10s~999s |
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Instability of charging voltage |
Less than 1% |
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Trigger mode |
Automatic or manual, single trigger available |
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Trigger malfunction rate |
Less than 1% |
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Trigger range |
100% rated charging voltage |
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Display screen |
10 inch TFT color touch screen |
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Measurement display resolution |
Better than 3% |
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Type of DUT |
MOV, TVS, GDT, SPD or mains surge protection device |
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DUT residual voltage |
＜5kV |
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Current measurement（optional） |
Internal test box, Roosevelt coil measurement, BNC output |
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Voltage measurement（optional） |
Internal test box, resistive voltage divider, BNC output |
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Oscilloscope |
MDO3012, optional |
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Insulation strength |
≤500V RMS（common port COMMON to ground reference PE） |
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General data |
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Power supply |
AC220V±10%，50/60Hz，10A |
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Temperature |
-10-+40℃ |
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Humidity |
35%-85%RH（no condensation） |
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Ground resistance |
No more than 0.5Ω |
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Construction |
Open style, control system split base system |
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Size of test room |
Depend on model（base system）+3M*5M（control system） |
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Operation table |
1.8M（width）*1.1M（height）*1M（depth） |
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No conductive dust, no fire or explosion danger, no corrosive metal and insulation air. Waveform of mains voltage is sine wave. The THD is <5%.
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Technical parameters of standard models
Models
LCG 1M
LCG 2M
LCG 3M
LCG 4M
LCG 5M
Current peak
0.1～1kA
0.2～2kA
0.15～3kA
0.2～4kA
0.25～5kA
Stored energy
30kJ
60kJ
100kJ
200kJ
300kJ
Charging voltage
20kV
20kV,
30kV
40kV
50kV
Equivalent output
impedance
20Ω,10Ω
20Ω,10Ω
20Ω,10Ω
20Ω,10Ω
20Ω,10Ω
DUT residual voltage
6kV,20kV
6kV, 20kV
6kV,20kV
6kV,20kV
6kV,20kV
Supply mains
AC220V 32A
AC220V 50A
AC220V 50A
AC220V 100A
AC220V 150A
Installation
Frame style
Frame style
Frame style
Frame style
Frame style
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Name |
Model |
Installation (connection) mode |
Reference picture |
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Oscilloscope |
MDO3012 |
external |
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Current probe |
TR1330,100kA |
Internal |
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Attenuator |
A10，10:1，50Ω |
external |
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Voltage probe |
P6015A, 40kV Peak |
external |
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Differential probe |
VCF 80, test up to 8kV |
external |
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PC control software |
MCS3000, programmable test from PC port, support Win xp，Win7 |
RS232 |
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Operating load mains |
CDN 1500, 1500A follow current |
external |
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