INTRUDUCTION

The high-performance Composite Polymeric Silicone insulators play an indispensable role here. The silicone rubber insulation for composite silicone-based housing demonstrates excellent pollution layer characteristics. Compote polymeric silicone insulators with silicone rubber possess unique properties. Silicone rubber Is the fastest growing& most dominant polymeric insulation material for high voltage product.

Composite Polymeric Silicone Insulators are available for applications up to system voltage of 33 kV and provide a reliable solution for power utilities& Railways globally. All PM insulators are manufactured at high pressure and high temperature by direct injection molding machines.

Composite Polymeric Silicone Insulators consist of silicone housing over fiberglass rod to which galvanized steel or aluminum end fining are attached. The core of the insulator is of fiberglass rod which provides high mechanical strength. A metal end fitting is crimped onto each end of the rod to provide high mechanical strength.

Composite Polymeric Silicone Insulators are made with the most advanced materials (silicone-based) resulting from field experience gained for more than 30 years.
The perfect interface between rod and silicone housing will not allow any development of internal tracking under the silicone housing.

STANDARDS

PM make Composite Polymeric Silicon Insulators have been designed,developed and manufactured in compliance to International Standard IEC 61109

PERFORMANCE

During Transportation and Installation

Light-weight and easy installation

Resistance to damage arising from transport

During Operation

Better electrical performance and reliability
Excellent anti-tracking properties

High mechanical strength FRP
Excellent performance under polluted environment
Silicon housing has excellent hydrophobic properties

Throughout the entire life

Long service life

Maintenance-free
Free from moisture ingress

DESIGNS

lnner core (FRP)

The inner core of the insulator is made of high-quality fiberglass that has been specially formulated for electrical and mechanical applications.

Silicone Housing

The housing and sheds are one piece. injection-molded silicone rubber is chemically bonded to the inner core. The silicone compound provides excellent hydrophobic and recovery characteristics which limits leakage current.

End fitting

The end fitting is made of high strength forged steel having high mechanical strength. The steel end fittings are hot-dip galvanized.

11 kV Composite Polymeric Insulators

11 kV Nominal Voltage	Type of Metal Fitting	Min Creepage Distance	Section Length± 10mm	Shed Quantity	Dry Power Freq.	Wet Power Freq.	Dry Lightning Impulse	Rate Mechanical Strength
11 KV	Disc T&C (Tension/Suspension)	320	280	3	50/70	35/40	75/95	45
11 KV	Disc T&C (Tension/Suspension)	320	280	3	50/70	35/40	75/95	70
11 KV	Disc B&S (Tension/Suspension)	320	265	3	50/70	35/40	75/95	45
11 KV	Disc B&S (Tension/Suspension)	320	300	3	50/70	35/40	75/95	70
11 KV	PIN	320	240	3	50/70	35/40	75/95	05
11 KV	PIN	320	240	3	50/70	35/40	75/95	10

22 kV Composite Polymeric Insulators

22 kV Nominal Voltage	Type of Metal Fitting	Min Creepage Distance	Section Length± 10mm	Shed Quantity	Dry Power Freq.	Wet Power Freq.	Dry Lightning Impulse	Rate Mechanical Strength
22 KV	Disc T&C (Tension/Suspension)	700	425	6	70/125	55/70	144/160	45
22 KV	Disc T&C (Tension/Suspension)	700	425	6	70/125	55/70	144/160	70
22 KV	Disc B&S (Tension/Suspension)	700	425	6	70/125	55/70	144/160	45
22 KV	Disc B&S (Tension/Suspension)	700	460	6	70/125	55/70	144/160	70
22 KV	PIN	700	410	6	70/125	55/70	144/160	05
22 KV	PIN	650	310	9	70/125	55/70	144/160	10

33 kV Composite Polymeric Insulators

33 kV Nominal Voltage	Type of Metal Fitting	Min Creepage Distance	Section Length± 10mm	Shed Quantity	Dry Power Freq.	Wet Power Freq.	Dry Lightning Impulse	Rate Mechanical Strength
33 KV	Disc T&C (Tension/Suspension)	900	540	8	90/160	75/85	175/200	70
33 KV	Disc T&C (Tension/Suspension)	900	505	8	90/160	75/85	175/200	45
33 KV	Disc T&C (Tension/Suspension)	1120	585	90/160	75/85	175/200	90/120
33 KV	Disc B&S (Tension/Suspension)	900	510	8	90/160	75/85	175/200	70
33 KV	Disc B&S (Tension/Suspension)	900	480	8	90/160	75/85	175/200	45
33 KV	Disc B&S (Tension/Suspension)	1120	555	11	90/160	75/85	175/200	90/120
33 KV	PIN	1000	410	9	90/180	75/90	175/230	10

Polymer Insulator