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Insulator Fittings
  • Insulator Fittings
  • Insulator Fittings
  • Insulator Fittings
  • Insulator Fittings
  • Insulator Fittings
  • Insulator Fittings
  • Insulator Fittings
Metal end fittings

Insulator Fittings

Insulator fittings are a collective term referring to the metal accessories used in conjunction with insulators within power systems. Primarily utilized for connecting and assembling various components, they serve the functions of supporting, securing, connecting, and splicing conductors and insulators in overhead transmission lines. 

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  • 1. Main Functions
    Transmission of Mechanical Loads: Withstands the vertical and horizontal loads exerted by conductors.
    Transmission of Electrical Loads: Ensures the normal flow of electric current.
    Protective Function: Shields conductors and insulators from damage caused by phenomena such as corona discharge and vibration.
    Connection and Securing: Integrates conductors, insulators, and transmission towers into a cohesive structural unit.

    2. Classification of Insulator Fittings
     Suspension Clamps
    Used to suspend conductors from suspension insulator strings or hardware assemblies.
    Primarily utilized on tangent towers (straight-line towers) and designed to withstand only vertical forces.
    Common Models: XGU series (e.g., XGU-1, XGU-2, XGU-5A, etc.).
     Tension Clamps (Strain Clamps)
    Used to secure conductors and withstand tensile forces; primarily designed to withstand horizontal forces.
    Classified into "Live Clamps" (detachable and reusable) and "Dead Clamps" (non-detachable; also serve a conductive function).
    Common Models: NLD series, hydraulic-type tension clamps, etc.
     Connecting Fittings
    Used to establish connections between insulator strings and hardware assemblies, between line clamps and insulator strings, and between ground wires and transmission towers.
    Common Types: U-shackles, ball-eye fittings, right-angle plates, extension links, double-yoke plates, etc.
     Splicing Fittings
    Used for joining conductors together, serving as alternatives to conventional copper or aluminum splicing tubes and compression sleeves.
     Protective Fittings
    Used to protect conductors and insulators from damage.
    Includes vibration dampers, armor rods, preformed spacers, etc.

    3. Application Characteristics
    Electrical Requirements: Must not generate corona discharge under operating voltage to prevent interference with radio or television signals.
    Mechanical Requirements: Must not suffer structural failure under mechanical loads and must not undergo significant deterioration after prolonged operation.
    Interchangeability: Connecting fittings must be interchangeable to accommodate various models and operating conditions.
    Testing Standards: Must comply with national standards and industry specifications such as GB/T 2314, DL/T 756, DL/T 757, etc.

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About Us
Taizhou HuaDong Insulated Material Co., Ltd.
Taizhou HuaDong Insulated Material Co., Ltd.
As China Insulator Fittings Manufacturers and Insulator Fittings Company, Taizhou HuaDong Insulated Material Co., Ltd (FORMER Yangzhou Dajieshi FRP products Co., Ltd), which was founded in October in 1994.
Our company is mainly engaged in the production of FRP ROD profiles, related terminal parts and accessory products. The terminal and accessories products such as various types of composite insulators, silicone rubber insulator fittings, line fittings and so on.The epoxy fiberglass core we produce as an intermediate connector and insulating parts is widely used in all fields and many kinds of composite insulator production. The profiles and composite insulators are widely used in electric power electronics and electrical railways. In the construction, automotive and environmental protection field IHIM products arewidely sales in North and South America.Africa.Asia. Europe ete such as USA.Kenya. Korea.India, Vietnam, Iran, Russia, Germany.Romania and other countries and vast areas in our country. THIIM is becoming a well-known supplier for insulation products field globally.
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Insulator fittings are a collective term referring to the metal accessories used in conjunction with insulators within power systems, and Taizhou HuaDong Insulated Material Co., Ltd manufactures this insulator fittings range primarily for connecting and assembling components in overhead transmission lines. Across the product line, insulator fittings serve the functions of supporting, securing, connecting, and splicing conductors and insulators on transmission towers.

Main Functions

Every insulator fitting Taizhou HuaDong Insulated Material Co., Ltd produces is designed around four core functions that keep a transmission line assembly working as a single unit.

Insulator
Fittings

Mechanical Load Transmission

Withstands the vertical and horizontal loads exerted by conductors.

Electrical Load Transmission

Ensures the normal flow of electric current through the assembly.

Protective Function

Shields conductors and insulators from damage caused by corona discharge and vibration.

Connection and Securing

Integrates conductors, insulators, and transmission towers into a cohesive structural unit.

Classification of Insulator Fittings

Taizhou HuaDong Insulated Material Co., Ltd groups its insulator fittings into five categories, each built for a specific role along the transmission line.

01

Suspension Clamps

Used to suspend conductors from suspension insulator strings or hardware assemblies. Primarily utilized on tangent towers, straight-line towers, and designed to withstand only vertical forces.

Common Models: XGU-1, XGU-2, XGU-5A
02

Tension Clamps (Strain Clamps)

Used to secure conductors and withstand tensile forces, primarily designed to withstand horizontal forces. Classified into Live Clamps, which are detachable and reusable, and Dead Clamps, which are non-detachable and also serve a conductive function.

Common Models: NLD series, hydraulic-type tension clamps
03

Connecting Fittings

Used to establish connections between insulator strings and hardware assemblies, between line clamps and insulator strings, and between ground wires and transmission towers.

Common Types: U-shackles, ball-eye fittings, right-angle plates, extension links, double-yoke plates
04

Splicing Fittings

Used for joining conductors together, serving as alternatives to conventional copper or aluminum splicing tubes and compression sleeves.

05

Protective Fittings

Used to protect conductors and insulators from damage, including vibration dampers, armor rods, and preformed spacers.

Application Characteristics

Beyond classification, Taizhou HuaDong Insulated Material Co., Ltd holds every insulator fitting to a defined set of electrical, mechanical, and interchangeability requirements before it ships to customers.

Electrical Requirements

Must not generate corona discharge under operating voltage, preventing interference with radio or television signals.

Mechanical Requirements

Must not suffer structural failure under mechanical loads and must not undergo significant deterioration after prolonged operation.

Interchangeability

Connecting fittings must be interchangeable to accommodate various models and operating conditions.

Every batch is checked against national standards and industry specifications before Taizhou HuaDong Insulated Material Co., Ltd ships insulator fittings to customers.

GB/T 2314 DL/T 756 DL/T 757

Founded in October 1994 as Yangzhou Dajieshi FRP Products Co., Ltd and now based in Jiangyan district, Taizhou city, Jiangsu province, Taizhou HuaDong Insulated Material Co., Ltd supplies insulator fittings together with its composite insulator, FRP rod, and winding tube product lines to customers across North and South America, Africa, Asia, and Europe, including the USA, Kenya, Korea, India, Vietnam, Iran, Russia, Germany, and Romania.

Frequently Asked Questions

What is the difference between suspension clamps and tension clamps

Suspension clamps are used on tangent towers and are designed to withstand only vertical forces, while tension clamps secure conductors against tensile forces and are primarily designed to withstand horizontal forces.

What is the difference between live clamps and dead clamps

Live clamps are detachable and reusable, while dead clamps are non-detachable and also serve a conductive function within the tension clamp assembly.

What models of suspension clamps are available

Common models include the XGU series, such as XGU-1, XGU-2, and XGU-5A, used to suspend conductors from suspension insulator strings on tangent towers.

What standards do insulator fittings need to comply with

Insulator fittings must comply with national standards and industry specifications such as GB/T 2314, DL/T 756, and DL/T 757.

Why must insulator fittings avoid corona discharge

Corona discharge under operating voltage can interfere with radio or television signals, so insulator fittings must not generate it under normal operating conditions.

What are splicing fittings used for

Splicing fittings are used for joining conductors together, serving as alternatives to conventional copper or aluminum splicing tubes and compression sleeves.

What is included in protective fittings

Protective fittings include vibration dampers, armor rods, and preformed spacers, all used to protect conductors and insulators from damage.

Are insulator fittings interchangeable across different tower models

Connecting fittings must be interchangeable to accommodate various models and operating conditions, which is one of the application requirements insulator fittings must meet.

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