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| Technics: | Welding |
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The T-clamp is a metal fitting used to connect the wire with the branch wire to transmit the electrical load. High-voltage transmission lines are channels that connect substations and transmit power, and are an important part of the power grid. In the design of transmission lines, we will see the connection method of the line T-connection. The T-connection line is to connect the lines of different spatial levels with short-circuit lines at the intersection of two same voltage levels. Substations supply power at the same time, the advantage is to reduce investment and use one substation interval less. This way of connecting another line from the main line is vividly called "T" connection mode, and this connection point is called "T contact" ".
The wear of the T-type clip is mainly related to the size and direction of the force. It will be worn when it is pulled up or down, and the size and direction of the force are completely determined by the topography, meteorological conditions and changes in ambient temperature. From the design point of view, since the upper conductors are mostly linear towers on both sides, the span is large, and the sag changes greatly under high and low temperature environments, and the lower conductors are isolated with small spans. It is not large, so consider the length of the T-connected short-circuit wire when the sag is small at low temperature to ensure that the lower conductor will not be pulled up. When the temperature changes to a high temperature, the sag of the upper conductor increases and the sag of the lower conductor remains basically unchanged, and the T-connected short-circuit wire is bent due to being too long. The main wire and T wire at the outlet of the T-type clip will be worn by the clip and the strands will be broken.
TY series compression type T-clamp is a T-clamp used to connect branch conductors to trunk conductors. Metal linings are arranged on the inner wall of the branch hole and the branch hole, and the two metal linings are connected into one body. The upper surface of the longitudinal part of the base body is screwed with the branch wire pressing screw; Compression screw; T-shaped upper cover, which is fastened with the T-shaped base. When connecting, only the simple work of tightening the screw is required, which saves time and effort; the branch wire and the main wire are in close contact with the metal lining through the pressing screw, and the contact area is large, so the connection is safe and reliable.
T-type clips are mainly used for overhead circuit lines or substations, and lead down current branches in a "T" shape on the main line of the busbar. There are two types of bolt type and compression type. For small cross-section wires, parallel groove clamps or clamping elliptical joints can also be used for so-called T-type connections.
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