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Interpretation of LITE technology 9th issue

Author.

LCS

Source:

Post time:

2026-09-28

本期关键词 (Keywords):

灯控制装置中的压敏电阻和放电管 (Use of varistor (VDR) and gas discharge tube (GDT)within controlgear)

决议编号2194(decision No. 2194)


 

Question:

1) Is it acceptable for only one VDR bridge basic insulation in the lamp control device?

2) Is it acceptable to have a VDR in series with GDT bridging basic insulation in the lamp control device?

3) Can VDR+GDT be removed during electrical strength testing?


 

Interpretation/Conclusion:

1) If the applicable tests for basic insulation (dielectric strength test, leakage current, leakage current, and gap) according to IEC/EN 61347-1 are all met, it is acceptable.

2) Refer to Q1).

3) Cannot be removed, only SPDs (Surge Protective Devices) that comply with the standard IEC 61643-11 can be removed during electrical strength testing.

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