Strain Clamp

The suspension clamp is primarily used to fix conductors to insulator strings or hang lightning conductors on straightline towers. Moreover, it also can be used for transposition towers to support transposition conductors and for tension towers or angle poles to fix the jumper wires

According to its configuration and installation means, the strain clamp can be divided into compression type, bolt type and wedge type. Generally, the compression type includes hydraulic compression type and explosive compression type.

Type of Hardware Fitting	Percentage (%)	Type of Hardware Fitting	Percentage (%)
Compression-type Strain Clamp	95	Strain Clamp for Distribution Lines	65
Bolt-type Strain Clamp	90	Strain Clamp for Insulated Wires (with Stripping)	65
Wedge-type Strain Clamp	90	Strain Clamp for Substations	65

The strain clamp adopts a wedge-shaped structure design. There is no need for a drain clamp, eliminating the problem of heating at the connection of the drainage plate. The installation is more convenient without the need for cutting wires or crimping tools, which can save time and improve efficiency.

Comparison of Features of Strain Clamps
Item	Compression-type Strain Clamp	Maintenance-free Strain Clamp
Clamp Grip	95% RTS of the conductor	95% RTS of the conductor
Construction Tools	Specialized equipment such as hydraulic presses and molds	Assembly-type; No need for specialized equipment
Personnel Requirements	High skill requirements; Crimping quality is affected by human factors	Low skill requirements; Not affected by human factors
Construction Quality	Crimping quality is difficult to identify with the naked eye; Inconvenient for maintenance	Clear at a glance; Maintenance-free
Construction Efficiency	High safety protection requirements; Relatively low crimping efficiency	Efficiency is 6 times that of compression-type strain clamps
Operation and Maintenance	Loosening, overheating, and burning of the drainage plate, etc.	Straight-through type;No drainage clamp; Maintenance-free