P-6T Pin Type Insulator — 6kV Porcelain Pin Insulator | GB Standard Compliant

The P-6T Pin Type Insulator is a 6kV-class porcelain pin insulator designed and manufactured by BONLE (FUJIAN) INSULATOR CO., LTD. in compliance with Chinese GB standards for overhead distribution line insulation.

It is part of the P-series pin insulator family (P-6T, P-10T, P-15T, P-20T, P-35T) widely used across Asia, Africa, and South America.

The insulator is constructed with a high-strength ceramic body and a hot-dip galvanized steel pin, with the ceramic and steel components cemented together using silicate cement adhesive.

The product is available with either brown or gray glaze finish and is suitable for 6kV nominal voltage distribution systems, offering reliable electrical insulation and mechanical support for conductors on cross-arms.

Explore related products: P-10T Pin Type Insulator (10kV) | P-15T Pin Type Insulator (15kV) | PQ Series Heavy Pollution Pin Insulators

P-6T Pin Type Insulator Technical Specifications

Dimensions

Parameter	Value
Diameter (D)	125 mm
Height (H)	90 mm
Creepage Distance	150 mm
Connection Type	M16 thread

Mechanical Performance

Parameter	Value
Cantilever Strength	11 kN

Electrical Performance

Parameter	Value
Typical Application Voltage	6 kV
Power Frequency Dry Withstand Voltage	45 kV
Power Frequency Wet Withstand Voltage	25 kV
Dry Lightning Impulse Withstand Voltage	80 kV
Power Frequency Puncture Voltage	65 kV

Radio Influence Voltage (RIV) Data

Parameter	Value
Test Voltage RMS to Ground	10 kV
Maximum RIV at 1000 kHz	50 μV

Packing & Shipping

Parameter	Value
Net Weight, Approximate	1.2 kg
Standard Packing	Wooden case / pallet (export packaging)

P-6T Pin Type Insulator Standards Compliance

The P-6T pin insulator conforms to the Chinese national standard GB/T 1001.1 (Insulators for overhead lines with a nominal voltage above 1,000V — Part 1: Ceramic or glass insulator units for a.c. systems — Definitions, test methods and acceptance criteria)-.

The current active version of this standard is GB/T 1001.1-2021, which specifies the test methods and acceptance criteria for porcelain insulator units used on AC overhead power lines and traction lines with nominal voltages above 1,000V and frequencies not exceeding 100Hz-.

For pin insulators specifically, GB/T 1000-2016 covers the dimensions and characteristics of high-voltage line pin-type porcelain insulators for nominal voltages up to 10kV-.

At the international level, the equivalent test methodology for ceramic insulator units is defined in IEC 60383-1:2023, which specifies definitions, test methods, and acceptance criteria for ceramic or glass insulators used on AC overhead lines above 1,000V-65.

The RIV (radio influence voltage) testing requirements are also addressed in IEC 60383-1:2023, Clause 14-. For post insulator testing methodology applicable to pin-type insulators, IEC 60168:1994 covers indoor and outdoor post insulators of ceramic material for systems with nominal voltages greater than 1,000V-35.

Applications

The P-6T pin insulator is primarily designed for 6kV overhead distribution lines, where it serves to both support conductors and provide electrical insulation between the conductor and the grounded cross-arm. Typical applications include:

Distribution networks — Medium-voltage overhead distribution lines in urban and rural areas
Pole-mounted installations — Cross-arm mounting on wooden or concrete poles
Substation connections — Insulation for incoming and outgoing distribution feeders
Traction lines — Applicable for AC overhead traction line insulation within its voltage class

The pin-type design allows the conductor to be secured in the top groove or side groove of the insulator head, making it suitable for straight-line and small-angle pole configurations. The M16 threaded pin provides secure attachment to standard cross-arm hardware.

P-6T Pin Type Insulator Quality Assurance & Testing

Each P-6T insulator undergoes rigorous testing protocols in accordance with GB/T 1001.1 requirements, including:

Power frequency dry and wet withstand voltage tests — Verifying insulation integrity under dry and rainy conditions
Lightning impulse withstand voltage test — Confirming surge protection capability
Power frequency puncture voltage test — Ensuring the ceramic body will not puncture under sustained overvoltage
Radio influence voltage (RIV) measurement — Controlling corona discharge to within acceptable limits for communication interference
Cantilever strength test — Validating mechanical load-bearing capacity

The 11kN cantilever strength rating provides a safety margin for conductor tension, wind loading, and ice loading conditions typical of distribution line installations.

Related reading: High Voltage Insulator Testing Methods | Understanding RIV in Distribution Insulators

P-6T Pin Type Insulator Packing, Shipping & Export Information

Parameter	Details
Net Weight (each)	~1.2 kg
Standard Export Packing	Wooden case or palletized
HS Code	8546.20 (Ceramic electrical insulators)
Port of Loading	Shanghai / Ningbo / Qingdao (China)
Export Markets	USA, Europe, Southeast Asia, Africa, South America, Middle East

Chinese pin insulator manufacturers routinely export to over 50 countries, with established distribution channels in North America, Europe, and emerging markets-. Products are typically shipped in wooden cases or on pallets with appropriate cushioning to prevent breakage during transit.

Why Choose the P-6T Pin Insulator?

GB standard compliant — Manufactured and tested to Chinese national standards, with equivalent IEC test methodology
Proven design — Part of the P-series family with decades of field deployment in distribution networks worldwide
Reliable mechanical performance — 11kN cantilever strength suitable for standard distribution line tensions
Excellent electrical characteristics — 45kV dry / 25kV wet power frequency withstand, 80kV BIL
Low RIV — 50μV maximum at 1000 kHz, minimizing communication interference
Export-ready — Standardized dimensions, ISO-certified production, and established international shipping logistics

FAQ

Q: What is the difference between P-6T and P-10T pin insulators?

A: The primary difference is the rated voltage — P-6T is rated for 6kV systems while P-10T is rated for 10kV systems. The P-10T typically has larger dimensions and higher electrical withstand values.

Q: Is the P-6T pin insulator available in composite (polymer) material?

A: The P-6T is a traditional porcelain pin insulator. For composite polymer alternatives in the 6–10kV class, consider the FPQ series composite pin insulators, which offer lighter weight and enhanced pollution resistance.

Q: What pin thread size does the P-6T use?

A: The P-6T uses an M16 threaded steel pin, compatible with standard cross-arm mounting hardware for distribution poles.

Q: Can the P-6T be used in highly polluted environments?

A: For heavily polluted areas, the PQ-6T heavy-pollution type pin insulator is recommended, which features an extended creepage distance for improved contamination performance.

About This Product Page

This specification page provides technical data for the P-6T Pin Type Insulator manufactured to GB standard. All dimensions, mechanical values, and electrical ratings are typical values for standard production units. For custom requirements, OEM specifications, or bulk quotations, please contact the manufacturer or authorized distributor directly.

Last updated: September 2026