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3. Use Leakage Current Tester (Simpson 228 or equivalent) to
measure the potential across the measuring network.
4. Check each exposed metallic part, and measure the voltage at
each point.
5. Reserve the AC plug in the AC outlet and repeat each of the above
measure.
6. The potential at any point (TOUGH CURRENT) expressed as
voltage U
and U
1
For a. c.: U
1
For d. c.: U
1
Note:
The limit value of U
2
mA (peak) a. c. and 2.0 mA d. c.
The limit value U
= 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for
1
frequencies greater than 100 kHz.
7. In case a measurement is out of the limits specified, there is a
possibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the customer.
2. Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
, does not exceed the following values:
2
= 35 V (peak) and U
= 1.0 V,
= 0.35 V (peak) for a. c. and U
= 0.35 V (peak);
2
= 1.0 V for d. c. correspond to the values 0.7
1
Figure 1
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