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For working voltage 130V< V< 250V :
1 U& s; I! ^2 r8 E1 D. A 一 :between live part of different polarity :1,If protected against deposition of dirt : creepage distance : 2.0mm ; clearance : 2.0mm .2,If not protected against deposition of dirt : creepage distance : 3.0mm ; clearance : 2.5mm .3,if lacquered of enamelled windings:creepage distance : 2.0mm ; clearance : 2.0mm . 4, for positive temperature coefficient(PTC)resistors including their connecting wires,if protected against deposition of moisture or dirt :creepage distance : 1.0mm ; clearance : 1.0mm .0 p3 m) y5 n4 K. t! s: d8 a
二 :between live part and other metal parts over basic insulation :1,If protected against deposition of dirt : (1)if of ceramic material ,pure mica and the like :creepage distance : 2.5mm ; clearance : 2.5mm .(2)if of other material :creepage distance : 3.0mm ; clearance : 2.5mm . 2,If not protected against deposition of dirt : creepage distance : 4.0mm ; clearance : 3.0mm .3,if the live parts are lacquared of enamalled winding : creepage distance : 2.0 mm ; clearance : 2.0mm .4,at the end of tubular sheathed type heating elements:creepage distance : 1.0 mm ; clearance : 1.0mm .
; {3 m: i+ E; I3 r- u* C4 M 三:between live part and other metal parts over reinforced insulation:
$ u: ]5 t2 T H3 H 1,if the lave part are lacquered or enamelled windings or protected against deposition of dirt : creepage distance : 6.0 mm ; clearance : 6.0mm .
& I5 a4 l% e: w( f ]7 M; A 2,for other live part not protected against deposition of dirt :creepage distance : 8.0 mm ; clearance : 8.0mm . |
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