绝缘子1874系列采用含玻璃纤维增强的热固性塑料制成，具有高阻燃性、高介电强度、强耐电痕性及强耐电弧性，已通过ul认证,它们广泛应用于各个方面.绝缘子1874系列
1874 seriesglastic metric standoff insulators – 1874series
physical and electrical properties
tensile strength (lbs.) 2,500
cantilever strength (inch lbs.) 3,000
compression strength (lbs.) 25,000
torque strength (ft. lbs.) 50
arc resistance (sec.) 180
ul subject 94 flame resistance 94 v-o
height tolerance (in.) ± .015
creep distance (in.) 5/16 plus insulator height
dry hi-pot (volts) nema specs. —-
dew hi-pot (volts) nema specs. —-
impulse —-
(volts, 1.5 x 40 wave)
track resistance (minutes) 600
close details
dimensions
part no. height thread size suggested indoor voltage rating short time electrical strength kv weight pound type availability
1874-1a 63mm m10 3200 51.4 0.44 s
1874-2a 63mm m12 3200 51.4 0.45 c
1874-3f 66mm m16 3400 —- 0.60 s
1874-1b 70mm m10 3600 —- 0.53 s
1874-2b 70mm m12 3600 —- 0.51 c
1874-1c 75mm m10 4100 —- 0.59 s
1874-2c 75mm m12 4100 —- 0.60 s
1874-1d 81mm m10 4500 —- 0.67 s
1874-2d 81mm m12 4500 —- 0.67 c
1874-1e 87mm m10 5000 55.2 0.76 s
1874-2e 87mm m12 5000 55.2 0.58 c
1874-3e 87mm m16 5000 55.2 0.74 c
s= stock item c= custom order…. all inserts listed above forthe1874 series are brass material.

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