TY 35-630mm² 20-70mm Electric power fittings Hydraulic T-clamp Single conductor branch clamp
Product Description
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.
Technical parameters
Product features
a. The material of the wire clip is exactly the same as the wrapped material (stranded wire), thus ensuring strong corrosion resistance.
b. The special design of the T-clamp avoids the possibility of loss or damage of bolts, nuts, washers and other components during installation or operation, and has high reliability in operation.
c. The installation quality of the wire clamp is less affected by the human factors of the installation workers, the installation quality is consistent, and the installation process will not damage the wire.
d. The installation of the wire clip is simple and quick, without any tools, and one person can quickly complete the installation with bare hands on site.
Grip strength: 25% of the twisted wire is calculated for the breaking force.
Product instructions and common problem solving
Instructions:
a. Follow up the model of the conductor and select the appropriate T-shaped connector strip. T-shaped connectors of different specifications cannot be replaced.
b. T-shaped clamp is a disposable product, which shall not be used repeatedly after bearing full tension.
c. This product is only applicable to the installation of trained technicians.
d. Before the installation of T-shaped clamp, the conductor shall be thoroughly polished to remove the oxide layer, and the surface of the conductor shall be coated with special conductive grease.
e. This product is a precision device. To ensure correct installation, it should be stored in the packaging box to prevent collision or heavy pressure during handling, so as to avoid deformation of the preformed wire.
f. When working on or near live lines, special attention must be paid to prevent electric shock accidents.
g. It is recommended that the electrical performance between the busbar and the downlead be achieved through jumper connection, and the T-shaped connecting strip only bears tension.
FAQ of TY clamp:
The wear of T-shaped clamp is mainly related to its force magnitude and force direction. The pulling force or downward pressure will cause wear, and the force magnitude and force direction are determined by terrain, meteorological conditions and environmental temperature changes. From the design point of view, because the upper layer conductors are mostly tangent towers on both sides, the span is large, and the sag changes greatly under high and low temperature environments, the lower layer conductors are all isolated spans with small span, and the temperature change has little impact on the conductor sag, so it is considered that the length of short T connection when the low temperature sag is small, to ensure that the lower layer conductors will not be pulled up. When the temperature changes at a high temperature, the sag of the upper layer conductor increases and the sag of the lower layer conductor is basically unchanged, the T-connection short circuit wire is bent due to being too long. In the frequent wind action and the annual bending straight alternating change, the main wire and T-connection at the outlet of the T-type clamp will be worn by the clamp and broken.
Solution:
In view of the defects of the above technology, the utility model aims to solve the problem of providing a T-shaped wire clamp with a longitudinal threading seat arranged separately, which can ensure the integrity and use of the main line, and is convenient for installation and construction.
In order to solve the above problems, the utility model provides a T-shaped wire clamp, which comprises a transverse threading seat and a longitudinal threading seat, the transverse threading seat is vertically arranged with the longitudinal threading seat, the transverse threading seat is fixedly connected with the longitudinal threading seat, the transverse threading seat is provided with a transverse channel, the longitudinal threading seat is provided with a longitudinal channel, the transverse threading seat includes a front seat and a rear seat, the front seat is provided with a groove along the transverse direction, and the rear seat is provided with a groove at the corresponding groove position, The groove is aligned with the groove to form a transverse channel. A locking structure is arranged between the front seat and the rear seat, and the longitudinal threading seat is fixedly connected with the rear seat.
The T-shaped clamp with the above structure is used to insert the main line into the transverse channel of the transverse threading seat, and the branch line into the longitudinal channel of the longitudinal threading seat. Since the transverse threading seat is fixedly connected with the longitudinal threading seat, the main line leads electricity into the branch line through the T-shaped clamp, and the branch line is crimped in the longitudinal channel to ensure its effective contact with the longitudinal channel. After the branch line is placed in the groove of the front seat, cover the rear seat. The groove is aligned with the groove to form a transverse channel in the transverse threading seat. The setting of the locking structure makes the front seat and the rear seat relatively fixed, playing the role of fixing the main line. The contact surface generated by the connection between the support on the transverse threading seat and the support on the longitudinal threading seat of the traditional T-shaped clamp is reduced, the stable operation coefficient of the clamp is increased, the integrity of the main line is ensured, and the installation is convenient, the construction is convenient, and the use is good.
As a further improvement of the utility model, the locking structure comprises a screw hole, a screw and a nut. The screw hole is arranged on the front seat and the back seat of the transverse threading seat, the screw is arranged in the screw hole, and the nut is matched with the screw thread.
The locking structure of the above structure is adopted. After the screw is threaded through the screw holes of the front seat and the rear seat, one end collides with the front seat and the other end is matched with the nut thread. After the nut is tightened, it collides with the rear seat to achieve the locking of the front seat and the rear seat. The main line contact is clamped by the bolt, which can effectively protect the twisted carbon fiber composite core conductor as the main line. During installation, the bolt can be firm in the air after the ground branch line is crimped, It is convenient for construction.
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