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Standard Insulator
 
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:: SUSPENSION INSULATOR ::
Suspension ANSI
Class 52-1
Suspension ANSI
Class 52-2
Suspension ANSI
Class 52-3
Suspension ANSI
Class 52-4
Suspension ANSI
Class 52-8

Note: 1. All dimensions are in millimeter.
  2. Dimension not specifying tolerance are only reference.
STANDARD
TISI 354
ANSI C29.2
CLASS 52-1 CLASS 52-2 CLASS 52-3 CLASS 52-4 CLASS 52-8
DIMENSION Leakage distance min., mm 178 209.5 292 292 279
MECHANICAL VALUE Combined mechaincal
and electrical strength, kN
44.48 66.72 66.72 66.72 160
Mechanical impact strength,cm-N 507.37 564.85 621.34 621.34 1016.73
Tension proof, kN 22.24 33.36 33.36 33.36 80
Time load, kN 26.69 44.48 44.48 44.48 106.75
ELECTRICAL VALUE Low-frequency dry flashover,kV 60 65 80 80 80
Low-frequency wet flashover,kV 30 35 50 50 50
Critical- impulse flashover,positive,kV 100 115 125 125 125
Critical- impulse flashover,negative,kV 100 115 130 130 130
Low-frequency puncture,kV 80 90 110 110 110
RADIO INFLUENCE
VOLTAGE DATA
Low-frequency test voltage,
rms to ground,kV
7.5 7.5 10 10 10
Maximum RIV at 1000 kHz,
Radio freed, microvolt
50 50 50 50 50
  Weight of one insulator,kg 2.9 4.3 5 5 7.5
Color of insulator BROWN BROWN BROWN BROWN BROWN