|
For working voltage 130V< V< 250V : ; P4 L8 I4 X" i9 C4 N4 b. F
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 .
! y- m' V7 x9 z& j' \ 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 .4 v. I. i1 n4 ~- E% E6 S$ D6 Q
三:between live part and other metal parts over reinforced insulation:
" M$ ^/ Q; g! z0 B 1,if the lave part are lacquered or enamelled windings or protected against deposition of dirt : creepage distance : 6.0 mm ; clearance : 6.0mm .
2 q6 V7 I% i R2 r9 n6 Q 2,for other live part not protected against deposition of dirt :creepage distance : 8.0 mm ; clearance : 8.0mm . |
|