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Type JB 54-1 - Porcelain Insulators

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Type-JB Strain Insulators are made of the highest grade of wet ware porcelain. They are rugged and have a low susceptibility to mechanical breakage. The holes and grooves are straight thus making assembly easy even with stiff guy strand.

Mechanical strength ratings are values developed with hard drawn copper or mild steel cable.

The type of strand and method of attachment will have a marked influence on the strength developed.

These insulators are intended primarily for guy or span wire insulation. They may also be used for low-voltage dead ends with the use of the clamps and fittings.

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Item #

Dry Flashover

Wet Flashover

Leakage Distance

Rated Ultimate Strength

031502-3060 25 kV 14 kV 1 5/8 in 10000 lbs.
031504-3060 30 at 60 Hz 16 kV at 60 Hz
15 kV at 60 Hz
1 7/8 in 12000 lbs.
031506-3060 35 kV 18 kV 2 1/4 in 20000 lbs.
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