Quick Response Electrical Safety Equipment Easy Maintenance Supporting MES
Safety Testing System / Electrical Testing System of appliances supporting MES
1. Application industry: home appliances & electric appliances such as air conditioner, refrigerator, washing machine, TV etc.
2. Test items: ground resistance, leakage current, insulation resistance, low voltage start, power, AC Hipot, DC withstand voltage
3. Technical parameters:
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AC Hipot |
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Output voltage setting range/precision |
AC 200~5000V ±(1.5%*setting value + 5 digit) |
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Breakdown current measuring range/precision |
0.10~99.99mA ±(1.5%*displayed value + 5 digit) |
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Presetting breakdown current alarm range/precision |
Up limit: 0.10~99.99mA; |
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Testing time range/resolution |
1~300S 1s/step |
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DC withstand voltage |
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Output voltage setting range/precision |
DC 200~5000V ±(1.5%*setting value + 5 digit) |
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Breakdown current measuring range/precision |
0.10~10.00mA ±(1.5%*displayed value + 5 digit) |
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Presetting breakdown current alarm range/precision |
Up limit: 0.10~10.00mA; |
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Testing time range/resolution |
1~300S 1s/step |
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Insulation resistance |
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Output voltage setting range/precision |
DC 500/1000V ±(1.5%*displayed value + 5 digit) |
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Insulation resistance measuring range/precision |
1~2000MΩ Within 100MΩ:±(5%*displayed value + 3 digit); |
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Presetting insulation resistance alarm range/precision |
Up limit: 0~2000MΩ; Lower limit: 1~2000MΩ |
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Testing time range/resolution |
1-300s 1s/step |
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Grounding |
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Ground current output range/precision |
AC 5.0~30.0A ±(1.5%*setting value + 5 digit) |
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Ground resistance measuring range/precision |
10.0~600mΩ±(1.5%*displayed value + 5 digit) |
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Presetting ground resistance alarm range |
Up limit: 5~10A 10.0~600mΩ; 11~25A 10.0~300mΩ; 26~30A 10.0~200mΩ |
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Testing time/resolution |
1~60s 1s/step |
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Leakage current |
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Output voltage |
1.06 times of nominal voltage |
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Setting of leakage type |
Dynamic leakage, static leakage, built-in body impedance network is optional, customized is available. |
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Output voltage measuring range/precision |
AC 50~280V ±(0.5%*displayed value + 2 digit) |
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Leakage current measuring range/precision |
0.05~20.00mA ±(1.5%*displayed value +0.02mA) |
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Presetting leakage current alarm range |
Up limit: 0.05~20.00mA; Lower limit: 0.01~5.00mA |
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Testing time range/resolution |
1~300s 1s/step |
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power |
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Output voltage |
Equals input voltage |
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Output voltage measuring range/precision |
AC 50~500V ±(0.5%*displayed value + 2 digit) |
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Output current measuring range/precision |
AC 0.20~40.00A ±(0.5%*displayed value + 2 digit) |
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Power measuring range/precision |
30~20000W ±(0.5%*displayed value + 5 digit) |
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Presetting power alarm range |
Up limit: 30~20000W; Lower limit: 0~20000W |
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Testing time/resolution |
1~300s 1s/step |
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Low voltage start |
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Output voltage |
O.85 times of input voltage |
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Output voltage measuring range/precision |
AC 50~500V ±(0.5%*displayed value + 2 digit) |
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Starting current measuring range/precision |
AC 0.20~40.00A ±(0.5%*displayed value + 2 digit) |
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Presetting current alarm range |
Up limit: 0.20~40.00A； Lower limit: 0.00~25.00A |
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Testing time/resolution |
1~300s 1s/step |
Accessories: power cord*1, foot switch*1(30A), clamp*2, test box1, input power wire*1, fuse tube*1.
4. Tips of electrical safety test
4.1 Attentions during dynamic leakage current measurement:
- The voltage regulation index of isolation transformer should be minimized to avoid the measurement error cause by the change of power supply of tested product. It will be better to access an adjustable AC power source at the primary winding of isolation transformer, which can make sure applying a correct input voltage to the tested object.
- The tested product should be placed on the insulation workbench without grounding if the isolation power source is not available.
- To ensure the accuracy of measurement, the leakage current meter should contain a wide frequency detect range and true RMS conversion circuit, because the leakage current passed through insulated material contains sinusoidal, non-sinusoidal and higher harmonic components.
4.2 Attentions for the ground conduction resistance measurement:
- Four-wire measurement method should be used in ground conduction testing, to eliminate contact thermo-electric potential and measurement error. The tester should have the function of automatically clearing wire resistance and contact resistance, which can ensure the accuracy of measurement.
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