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A.1 In order to determine whether a conductive part is a live part which may cause an electric
shock, the lamp controlgear is operated at rated voltage and nominal supply frequency, and
the following tests are conducted.
A.2 The part concerned is a live part if a current of more than 0,7 mA (peak) or 2 mA d.c. is
measured.
For frequencies above 1 kHz, the limit of 0,7 mA (peak) is multiplied by the value of the
frequency in kilohertz, but the result shall not exceed 70 mA (peak).
The current flowing between the part concerned and earth is measured.
Compliance is checked by measurement in accordance with Figure 4 and 7.1 of IEC 60990.
A.3 The voltage between the part concerned and any accessible part is measured, the
measuring circuit having a non-inductive resistance of 50 kΩ. The part concerned is a live
part if a voltage of more than 34 V (peak) is measured.
For the above test, one pole of the test supply shall be at earth potential. |
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发表于 2012-1-6 19:40:45
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