Insulator PDF
Composite distribution deadend insulator
What is composite distribution deadend insulator?
Used on the high-voltage distribution networks, composite distribution deadend insulator is made of highly waterproof material, which has the particularities of desirable toughness and resistance to tensile strength.
composite distribution deadend insulator composite deadend insulator
Composite distribution deadend insulator Structure:
The composite distribution deadend insulator consist three parts: fiberglass core rod, weathersheds and metal parts.
Coupling size of the high voltage insulator of deadend type is clevis and tongue.
Composite distribution deadend insulator Material:
The core of the composite distribution deadend insulator is made of fiberglass-reinforced resin matrix. The core is very important, because it can affect the mechanical or electrical properties of the insulator.
The material of the weathersheds is silicon rubber or ethylene propylene, the silicon rubber is commonly used for the outdoor type composite insulator. All Orient Power composite insulator is silicone rubber type.
Except the cotter keys, the metal parts is usually made of steel or malleable iron.
Composite distribution deadend insulator Voltage Applied:
Composite distribution dead end insulator is normally used on high voltage distribution lines under 69KV, the most common used is 15KV, 25KV, 35KV composite distribution deadend insulator.
ANSI C29.13 is the special international standard for this kind composite insulator.
Tests of composite distribution deadend insulator:
The composite distribution deadend insulator test can be divided into four kinds:
Prototype tests: Water penetration test, aging or accelerated weathering test, dye penetration test, water diffusion test, power arc test, tracking and erosion test, tensile load test, torsional load test, thermal mechanical test, flammability test for the shed and housing material.
Electrical design tests: Low-frequency dry flashover test, Low-frequency wet flashover test, critical impulse flashover tests-positive and negative, radio-influence voltage.
Quality conformance tests: Dimensional tests, Galvanizing test, specified mechanical load test, retest procedure.
Routine tests: Tension-proof test, visual examination.
