DSH 535 Reduction of clearance and creepage distance
http://decisions.iecee.org/icons/ecblank.gifDSH 535
Reduction of clearance and creepage distance
54
60601-1(ed.2);am1;am2
Standard(s)- (year and edition):
IEC 60601-1:1988+A1 +A2
Sub clause(s):
54
Sheet n°: 535
Subject:
Reduction of clearance and
creepage distances
Key words:
Clearance, creepage, reduction,
tracking resistance
Decision taken at the 40th
meeting 2003
Question:
Is it permitted to reduce the creepage and clearance requirements of clause 57.10 based on evidence that
the material being assessed has a high resistivity to tracking?
If it is permitted, what IEC Publication should be used as a guideline in determining the permitted
reduced creepage and clearance distances?
Decision:
This edition of the standard does not allow reduction in clearance and creepage distance.
Explanatory notes:
This problem will be transferred to SC62A/WG14 to make a recommendation to the 2nd edition do deal
with this issue. The 3rd edition will address this issue.
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