Toughened Glass Insulator

Description

Toughened insulator is a common electrical equipment, mainly used for insulation support and fixation in power transmission and distribution lines. The insulator body is the main component of a glass insulator, which is usually made of glass fiber reinforced plastic. This material has excellent insulating properties and mechanical strength. Able to withstand the voltage and mechanical loads found in high-voltage power lines.

Product Feature

High mechanical strength, 1 to 2 times higher than that of porcelain insulators,
The performance is stable and not easy to age, and the electrical performance is higher than that of porcelain insulators.
Few production processes, short production cycle, easy for mechanized and automated production, and high production efficiency.
Due to the transparency of glass insulators, it is easy to find small cracks and various internal defects or damage during external inspection.
If the glass body of the insulator has various defects, the glass body will automatically break, which is called “self-breaking”. After the insulator is self-broken, the iron cap residual hammer still maintains a certain mechanical strength and hangs on the line, and the line can still continue to operate. When line inspectors inspect the lines, they can easily find self-destructive insulators and replace them with new ones in a timely manner. Since glass insulators have this “self-breaking” characteristic, there is no need to conduct preventive tests on the insulators during line operation, which brings great convenience to operation.
Glass insulators are light in weight.

Packing

Several different grades of packaging are available depending on the mode of transport and expected storage conditions. Special packaging arrangements are available upon user request.

Specification Chart

Type	U40B	U70BL	U100BL	U120B	U160BL	U210B	U240B
Nominal Diameter D (mm)	175	255	255	255	280	280	280
Structure Height (mm）	110	146	146	146	170	170	170
Nominal Creepage Distance (mm)	190	320	320	320	400	400	400
Power Frequency Withstand Voltage (kV) Dry, 1 min.	55	70	70	70	75	75	75
Power Frequency Withstand Voltage (kV) Wet, 1 min.	30	40	40	40	45	45	45
Dry Lightning Impulse Withstand Voltage (kV)	90	130	130	130	130	130	130
Minimum mechanical failing load (kN)	40	70	100	120	160	210	240
Standard Couping	11	16	16	16	20	20	24

Application

Glass insulators are used to fix wires to withstand the vertical load and horizontal tension of the wires and to insulate the wires from the earth. It is a special insulation control that can play an important role in overhead transmission lines. In the early years, glass insulators were mostly used on telephone poles, and gradually developed into high-voltage wiring towers with a large number of disc-shaped glass insulators hung on one end. It is to increase the creepage distance and is usually made of glass or ceramic and is called an insulator. Glass insulators should not fail due to various electromechanical stresses caused by changes in environmental and power load conditions, otherwise the glass insulators will not play an important role and will damage the service life and service life of the entire line.

We only accept bulk order instead of retail sales, greatly appreciated for your kindly understanding.

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