燈具 跨LN之間CX電容兩端, 斷電的時候,法規有規定多少秒要消掉?
燈具 跨LN之間CX電容兩端, 斷電的時候,法規有規定多少秒要消掉? ( 洩放電組多久時間降多少? )1598及153有放電要求，都是1分鐘!
固定燈具 UL 1598 – 6.8:
The voltage across the capacitor terminals at the end of 1 minute shall be reduced to a value of 50
V or less, and the energy stored shall be less than 20 J, as determined by the equation:
J=5x10-7 cv2
移動燈具UL 153 - 67.3:
67.3.1 A portable luminaire having a capacitor as a component separate from the ballast shall incorporate
means, such as a bleeder resistor, for the automatic discharge of the capacitor within 1 minute after
removal of the lamp from the circuit or after opening of the primary circuit, or both. The voltage (V) at the end of 1 minute across the terminals shall be reduced to a value of 50 volts or less, and the energy stored (J) shall be less than 20 joules as determined by the equation:
J=5x10-7 CV2
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