20 kv Vertical type Clamp top insulators 4220-70
About
Clamp-top insulators are designed and manufactured according to ANSI (C29.7) to ensure both electrical and mechanical performance. These characteristics satisfy all dimensional specifications and applicable requirements.
Vertical-type clamp tops as well as cup-base and gain-base horizontal-type clamp tops for voltages ranging from 20 kV to 45 kV for distribution lines. Clamp tops can be assembled with wood or metallic cross arms, concrete posts, or metallic structures.
Specification:
Dry arcing distance in inches: 5
Leakage distance in inches: 10
Cantilever strength pounds: 2800
Tension strength pounds: 5000
Typical application voltage: 20
Low-frequency dry flashover: 70
Low-frequency wet flashover: 50
Critical impulse flashover positive: 100
RMS to ground, kV: 15
Maximum RIV at 1000 kHz: 50
Note 1: ANSI 70 gray is standard. Brown is available by request
Note 2: LN = Lock nut; LNC LNC= Lock nut with trunnion bolt
Note 3: Available with short or long stud, sold separately
