|
For working voltage 130V< V< 250V :
* o6 Y3 @1 K0 p/ ^' r$ Y) p 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 .% X6 i3 [0 z# O5 s( w+ k& O
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 .8 J! j, J" s4 h
三:between live part and other metal parts over reinforced insulation:7 l+ ~7 Q9 r* t$ s% _
1,if the lave part are lacquered or enamelled windings or protected against deposition of dirt : creepage distance : 6.0 mm ; clearance : 6.0mm .( b$ d1 J& T: D. N: X1 p/ r
2,for other live part not protected against deposition of dirt :creepage distance : 8.0 mm ; clearance : 8.0mm . |
|