Dead End Strain Clamp FAQ: Specifications, Selection and Ordering Questions

A dead end strain clamp is a metal fixture used to secure wires, withstand wire tension, and hang wires onto tension strings or towers. The product is called “Tension Clamp，Strain Clamp，Dead-End Clamp.”

Tension clamps fall into two categories according to their structure and installation conditions:

• Non-conductive tension-clamp type: This type bears the tensile forces of the conductor or lightning protection wire but is not used as a conductor. It can be removed and used separately after the wire is installed. Bolt type and wedge type tension clamps are included in this category.
• Dead wire clamp type: This type bears the tension of the conductor or lightning protection wire and also serves as a conductor. Once installed, it cannot be disassembled and is also called a dead wire clamp.

For the first type, the clamping force should not be less than 90% of the rated tensile force of the installed conductor or lightning protection wire.

For the described optical-cable fitting set, the grip strength of the cable clamp is stated as not less than 95% of the rated tensile strength of the optical cable. This figure applies to the optical-cable application described, not automatically to every dead end strain clamp.

The product description states that tension clamps are used for corner, splice, and terminal connections. It also describes a complete set of fiber optic cable tension fittings comprising tension pre-twisted wire and matching connection fittings.

This fitting set is suitable for ADSS optical cable lines with a span of no more than 100 meters.

Before requesting a quotation or technical confirmation, provide the intended application and identify whether the clamp is for a conductor, lightning protection wire, or optical cable. Also confirm the required clamp type and the applicable rated tensile strength.