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Ball and socket type suspension porcelain insulators( ANSI Class )
ANSI Class
52-3
52-5
52-8
52-11
Coupling size
Type B
Type J
Type K
Type K
Dimensions
Diameter(D)
mm
254
254
254
280
Spacing(H)
mm
146
146
146
155
Creepage distance
mm
320
320
320
380
Dry arcing distance
mm
197
197
197
216
Mechanical Values
Combined M&E strength
kN
67
111
178
222
Dry arcing distance
mm
197
197
197
216
Impact strength
N.m
6.2
10
11.3
11.3
Routine proof test load
kN
33.3
55.5
89
111
Time load test value
kN
44.5
67
107
134
Maximum working load
kN
33.3
55.5
89
111
Electrical Values
Low frequency dry flashover voltage
kV
80
80
80
80
Low frequency wet flashover voltage
kV
50
50
50
50
Critical impulse flashover voltage,positive
kV
125
125
125
125
Critical impulse flashover voltage,negative
kV
130
130
130
130
low frequency puncture voltage
kV
110
110
110
110
Radio influence Voltage Data
Test voltage RMS to ground
kV
10
10
10
10
Maximum RIV at 1000kHz
μv
50
50
50
50
Packing and Shipping Data
Net weight,approximate
kg
4.7
5.2
7.8
9.7
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