ANSI 56-2 Ceramic Pin Type Insulator Manufacturer

For ANSI 56-2, the normal packing is 4pcs/carton, of course the wooden crate and pallet packing can be available when customer required, carton and wooden crate are suitable for a full container quantity, for bulk cargo, you need to pack by pallet to avoid the broken.

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If you are interesting our products ANSI 56-2 Ceramic Pin Type Insulator, please contact to sales@sdinsulator.com

Mounting Arrangements for Tests on Pin Insulators Wikipedia:

Standard mounting arrangement for electrical tests:

According to type type of pin insulator, two mounting arrangements on to the supporting cross-arm are used.

-For pin insulators where the insulating component in service is supported without contact with the supporting structure:

The test specimen shall be mounted  on a vertical metal pin of approximately 25mm diameter of such length that the shortest dry-arcing distance from the upper electrode and/or connected metallic parts to the supporting cross-arm shall be 25% to 50% greater than the similar distance to the pin. The pin shall be coaxial with the test specimen. If the insulator has an integral pin, this shall be used.

-For pin insulators where the insulating component in service is in contact with the supporting structure(pin post):

The test specimen shall be attached direct to the supporting cross-arm.

Unless otherwise specified, the supporting cross-arm shall be horizontal, straight, smooth, earthed, metallic tube or structural member having a horizontal width not less than 76mm and not more than 152mm. It shall be placed at least 1m above the ground.

A conductor not less than 13mm diameter placed at right angles to the supporting cross-arm and extending in both directions at least twice the insulator height beyond the top shed shall be secured as nearly as possible horizontally in the side groove of the insulator. It shall be secured by means of a metallic wire of approximately 2.5mm diameter wrapped around the conductor of a length approximately twice the diameter of the top shed and extending equally on each side of the insulator. It shall be of such length that flashover does not occur at its ends. For wet tests the conductor shall be placed so that it is normal to the rain direction and on the side of the insulator nearest the artificial rain spray equipment.

No other object shall be nearer to the insulator than 1m or 1.5 times the height of insulator, whichever, is the greater.

If the insulator is provided with clamp, the conductor shall be placed in the clamp.

The test voltage shall be applied between the conductor and earth.

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