4640-15 15KV Standoff Insulator

Note: This is a variation of Glastic Standoff Insulators (Molded with a UL Recognized Flame Resistant Fiberglass Reinforced Thermoset Polyester Molding Compound).

Hi-Pot Tested to Assure Electrical Reliability
Glastic Standoff Insulators are molded of Underwriters laboratories Incorporated (UL) Recognized flame resistant fiberglass-reinforced thermoset polyester molding compound. Glastic Insulators 1603, 2015, 1461, 1872, 4610 and 4640 are UL Recognized according to UL Standard for Safety 891.

They feature shatter resistance and closer height tolerances than commonly available in porcelain insulators. Moisture and heat-resistance properties of Glastic Insulators are higher than those of conventional plastic insulators.

Voltage Rating
This is only meant to be a guide for indoor service. Insulators mounted within a suitablcell namelectrical cabinet are considered indoors even though the cabinet itself is outdoors. An insulator will withstand its rated voltage continuously but industry standards or other specifications may require a different spacing from conductor to ground for a particular voltage. Wet or dirty conditions may require derating an insulator.

Outdoor Use
Glastic Insulators are primarily intended to be used indoors or inside a suitable enclosure. Insulators 4610 and 4640 should not be used upside down if there is a possibility of the center hole filling with water.

UL Recognition
All Glastic Insulators are molded from UL Recognized molding materials (UL File E23525). When submitting your equipment to UL, you may need to furnish the molding material grade number used for a particular insulator. This information is available from Glastic Corporation. All of the molding materials used in Glastic Insulators have a generic relative Thermal Index of 130ºC electrical/130ºC mechanical. Glastic 1603, 2165, 2015, 1461, 1872, 4610 and 4640 Insulators are UL Recognized according to UL standard for Safety 891 (UL File E81713).

Specifications

Arc Resistance ( sec )180
UL Subject 94 Flame Resistance94 V-O
Height Tolerance ( in )± .015
Track Resistance ( min )600
Tensile Strength ( lb )5000
Cantilever Strength ( in/lb )10000
Compression Strength ( lb )20000
Torque Strength ( ft/lb )285
Creep Distance ( in )7
Dry Hi-Pot NEMA Specs. ( V )36000
Dew Hi-Pot NEMA Specs. ( V )26000
Impulse (1.5 x 40 Wave) ( V )95000

Note

Meets the requirements specified for a 13.2KVA-20 Indoor Insulator per NEMA SG-6-1995.

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