High-Quality Medium Voltage Pin Porcelain Insulator for Reliable Performance

Product Description

Product Description

The pin-type insulators for high-voltage lines are mainly used to insulate and support the conductors in high-voltage overhead power transmission and transformation lines. They are classified into five grades according to the rated voltage: 6, 10, 15, 20 and 35KV. The pin-type insulators consist of porcelain pieces and steel feet (or threaded sleeves), and the porcelain pieces and steel feet (or threaded sleeves) are bonded together with a silicate cement adhesive. The surface of the porcelain pieces is white or brown, etc., and the surface of the steel feet is hot-dip galvanized.

Product Advantages:

Application Scenarios:

1.Triple sheds extend creepage distance, prevent pollution flashover in humid & dusty areas
2.High-temp hydrophobic brown glaze, self-cleaned by rain to cut maintenance
3.Fully hot-dip galvanized pin & nuts, anti-rust against salt fog and acid corrosion
4.Integrated wire groove, no extra clamps needed for fast installation
5.Monolithic sintered porcelain, high bending & impact resistance
6.Universal pin size, compatible with all standard pole crossarms

- Insulation support for medium voltage overhead power lines
- Outdoor pole projects for PV and wind power transmission
- Urban grid renovation and rural power infrastructure construction
- Corrosion-resistant solution for coastal, mining and chemical industrial areas
- High voltage overhead wiring for factories and farm irrigation lines

Specification

Type		P-11-Y	P-15-Y	P-22-Y	P-33-Y	PW-15-Y	PW-22-Y
Greepage distance(mm)		240	295	432	630	673	673
Cantilever strength(kN)		11	11	11	13.8	11	11
Withstand voltage	One minute wet power frequency withstand voltage(kV)	45	50	70	90	70	70
	Dry impulse withstand voltage(kV)	80	95	124	170	125	125
Power frequency Puncture voltage(kV)		150	450	200	210	200	200
Radio influence voltage	Test voltage to ground(kV)	15	15	22	30	30	30
	Max RIV at 1MHz μV	800/100	800/100	12000/100	16000/100	16000/100	16000/100
Used spindle		Small steel head		Large steel head

OEM & ODM Custom Service:

- Porcelain customization: Adjustable shed size, brown/white glaze optional
- Pin customization: Custom pin length & diameter for various crossarms
- Logo engraving: Print client LOGO & model on porcelain or pin
- Packaging customization: Neutral cartons, fumigated wooden cases, private brand package
- One-stop service: Fast sampling, bulk delivery, complete matching hardware supply

SF6 Circuit Breaker:

Pole Clamp:

Disconnect Switch:

Works together with pin-type insulators to provide reliable insulation and switching protection for medium voltage power systems.

Enables secure mounting of insulators and electrical fittings on utility poles.

Combined with pin-type insulators to ensure safe isolation and maintenance operation of power networks.

Company Profile

About us

Baoding Sihedan Electric Technology Co., Ltd. is a professional manufacturer of power systems and transmission and distribution line materials, providing diverse solutions for the global energy sector.

Our product includes Power Systems, such as Reclosers, Air Break Switches, Load Break Switches, SF6 and Vacuum Circuit Breakers, and Current Transformers (CTs) and Voltage Transformers (VTs); Insulators & Surge Protection, including Insulators, Surge Arresters, and Drop-out Fuses; Electric Power Fittings, such as Overhead Line Fittings, Stay Materials, Steel Structures, and Earthing Materials; and Enclosures & Switchgears, including Enclosures and Switchgears, offering a complete range of solutions for transmission, distribution, and industrial power applications.

 

To support our product quality, we provide warranty letters and test reports for all products. Additionally, we offer virtual maintenance services, ensuring timely support and expert guidance for our clients, wherever they are.We have successfully contributed to major domestic and international power projects, earning long-term trust from the State Grid Corporation of China and China Southern Power Grid Company, among other leading organizations.

Main products

Packing & Delivery

FAQ

Q1: Are you a factory or a trading company?
A: We are a professional manufacturer with our own production workshop and complete testing equipment.

Q2:Can you provide samples? Are the samples free?
A: Samples are available, but not free of charge; the sample fee and freight cost shall be borne by the buyer.

Q3:How long is the warranty period of the products?
A: We provide a 1-5 year warranty against manufacturing defects, starting from the date of shipment.

Q4:EPC material design and bulk supply?

A:Yes, we have a strong design team and have been supplying LV and MV EPC materials in bulk for many years.

Q5:Complete documents for tender?

A:Yes, a complete set of documents is ready for submission.

Q6: Can you do OEM with our brand?
A: Yes, we accept OEM customization with your logo, brand, and packaging.

Q7:What kind of packaging do you use for the products?
A: Standard export pallets with waterproof and moisture-proof treatment, suitable for long-distance ocean transportation.

 

Q8: What payment methods do you accept?

A:  1. 30% T/T in advance, 70% T/T against copy of B/L(Bill of Lading)

      2. 30% T/T in advance, 70% by L/C                                                                             

 

Q9: What shipping options do you provide, and what are the typical lead times for delivery? 

A:Sea Freight, and the lead times is about 15-30 days.