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High-Quality Porcelain Insulators for Reliable Electrical Insulation

Model： EP57-15

Porcelain insulators are crucial components in electrical systems. They are made of porcelain, which has excellent electrical insulation, mechanical strength, and resistance to environmental factors. They isolate conductors from supports, preventing electrical leakage, and come in various shapes and sizes for different applications, ensuring safe and reliable power transmission and distribution.

product details

Product description

Porcelain insulators are key components in electrical systems. Made of porcelain, they offer great electrical insulation. They come in different shapes, like disc or cap-and-pin types. They insulate conductors, prevent electrical faults, and provide mechanical support. Used in power lines and substations, they ensure safe power operation.

Product Parameter (Specification)

Line post type porcelain insulators
ANSI Class		57-11	57-12	57-13	57-14	57-15
Dimensions
Diameter	mm	102	102	102	102	102
Height	mm	260	324	400	480	543
Creepage distance	mm	356	559	737	1015	1145
Dry arcing distance	mm	165	241	311	368	438
Mechanical Values
Cantilever strength	kn	12.5	12.5	12.5	12.5	12.5
Cantilever strength routine test	kn	22	22	22	22	22
Electrical Values
Type application voltage	kv	25	35	45	55	66
Low frequency dry flashover voltage	kv	80	110	125	150	175
Low frequency wet flashover voltage	kv	60	85	100	125	150
Critical impulse flashover voltage,positive	kv	130	180	210	255	290
Critical impulse flashover voltage,negative	kv	155	205	260	340	380
Radio influence Voltage Data
Test voltage RMS to ground	kv	15	22	30	44	44
Maximum RIV at 1000kHz	μv	100	100	200	200	200
Packing and Shipping Data
Net weight,approximate	kg	6.8	10.0	11.8	16.5	18.6

Product features

●High Electrical Resistance: Porcelain insulators have excellent electrical insulation properties, effectively preventing the flow of electric current through the insulator, which helps in isolating electrical conductors and maintaining the integrity of electrical circuits.
●Mechanical Strength: They possess sufficient mechanical strength to support electrical conductors, especially in overhead power lines where they must bear the weight of the conductors and withstand external forces such as wind, ice, and vibration.
●Chemical Stability: The porcelain material is chemically stable, making the insulators resistant to corrosion and degradation from various environmental factors, ensuring a long service life.
●Heat Resistance: They can withstand relatively high temperatures without significant degradation, which is important for their performance in electrical systems where heat generation is common.
●Dielectric Strength: These insulators have good dielectric strength, enabling them to handle high voltages, making them suitable for a wide range of voltage levels in power transmission and distribution systems.
●Weather Resistance: Porcelain insulators are designed to endure different weather conditions, including rain, snow, sunlight, and pollution, maintaining their insulation and mechanical performance over time.

Packaging

Normal package, Packed in Roll, Plastic film winding, Standard export carton, Or based on your demands.

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