Product Information

Specification

About

Suspension type insulators mechanically hold the conductor thus isolating it from contact with land and other conductors. GAMMA suspensions support mechanical and electrical charges ranging from 15,000 to 25,000 lbs. and are available in all tension levels, for both distribution and transmission systems.

Porcelain suspensions are specifically designed to comply with ANSI CLASS (C29.2) standards, ensuring the performance of both the electrical and mechanical functions, as well as to satisfy all dimensional specifications and applicable requirements.

The porcelain suspensions portfolio includes FOG type insulators for high-contaminated environments. These are offered in brown or gray glaze according to customer preferences and standards for each country.

Post and cable mount hardware allow insulators to be fixed in suspension and retention designs for a perfect connection. These are manufactured in galvanized steel with different configurations, including double galvanized layer or zinc sleeve - characteristics that satisfy all mounting requirements.

Specification:

ANSI Class (C29.2A) : 52-3
Dry Arcing Distance : 7-3/4"
Leakage Distance : 11-13/16"
Combined M & E Strength, Pounds : 18000
Mech, Impact Strength, Inch.pounds : 55
Routine Proof Test Load, Pounds : 9000
Time Load Test Value, Pounds : 12000
Maximun Working Load, Pounds : 9000
Low-frequency Dry Flashover : 80
Low-frequency Wet Flashover : 50
Critical Impulse Flashover, Positive : 125
Critical Impulse Flashover, Negative : 130
Low-frequency Puncture Voltage : 110
Low-frequency Test Voltage, Rms To Ground : 10
Maximum RIV at 1000 kHz, µν : 50

Note 1 : ANSI 70 gray is standard. Brown or white available by request
Note 2 : Insulators can be requested with extra hot-dip galvanized layer in caps and bolts for contaminated areas
Note 3 : Insulators can be requested with zinc sleeve ball bolt for contaminated areas
Note 4 : Part numbers 8256 and 8257 comform to ANSI Class 52-3 specifications. However they carry higher strength rating than that required by standard

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