Jbc 1.5-300mm^2 1-10kv 75-600A Puncture Clamp Insulation Puncture Clip

Product Description

Insulation puncture clip is mainly composed of insulation shell, puncture blade,  waterproof rubber pad and torque bolt. When connecting the cable branch of the insulation piercing clip,  insert the branch cable into the branch cap and determine the position of the main line branch,  then use a socket wrench to tighten the torque nut on the clip. The insulator of the puncture blade gradually closes,  and at the same time,  the arc-shaped sealing gasket wrapped around the puncture blade gradually adheres to the cable insulation layer,  and the puncture blade also begins to pierce the cable insulation layer and the metal conductor. When the sealing degree  of the sealing gasket and the insulating grease and the contact between the piercing blade and the metal body are  effective, the torque nut will automatically fall off. At this time,  the installation is completed and the sealing and electrical effects of the contact point are very good.
Insulation puncture clips can be divided into 1KV, 10KV,  20KV insulation puncture clips according to voltage classification.
According to the function, it can be divided into ordinary insulation puncture clip,  electrical inspection grounding insulation puncture clip, lightning protection arc insulation puncture clip,  fire insulation puncture clip

Technical parameters and structure dimensions

Product features and Advantages

Features:
1. The puncture structure is simple to install, and the insulated wire does not need to be peeled;
2. Torque nut, constant puncture pressure, ensure good electrical connection without damaging the wire,
3. Self-sealing structure, moisture-proof, waterproof, anti-corrosion,  prolong the service life of insulated wires and clips
4. Using special contact blade, suitable for copper (aluminum) butt and copper-aluminum transition
5. The electrical contact resistance is small,  and the contact resistance is less than 1.1 times the resistance of the equal-length branch wire, in line with the DL/T765.1-2001 standard
6. Special insulating shell, resistant to light and environmental aging, dielectric strength> 12KV
7. Curved surface design, suitable for the same (different) diameter wire connection,  wide connection range (0.75mm2-400mm2)
Advantage:
1. Easy installation:  the cable branch can be made without stripping the insulation of the cable,  and the joint is completely insulated. There is no need to cut off the main cable,  and branches can be made at any position of the cable. Easy and reliable installation,  only need to use a socket wrench, it can be installed live.
2. Safe to use:  The joint is resistant to twisting, shockproof, waterproof, flame retardant, anti-galvanic corrosion and aging,  and requires no maintenance. Has been used successfully for over 30 years.
3. Cost saving:  The installation space is extremely small, saving bridge and civil construction costs. For applications in buildings,  there is no need for terminal boxes, distribution boxes, and cable return lines,  saving cable investment. The cost of cable + piercing clip is lower than other power supply systems,  only about 40% of the plug-in busbar, and about 60% of the prefabricated branch cable.

Product reliability

From the characteristics of metal materials, we know that under the condition of stress,  the wire will inevitably produce a certain amount of creep,  which is more serious in the parallel groove clamp with high local pressure,  which makes the wire slightly thinner and the diameter decreases. Without a proper compensation function,  the grip of the grooved wire clip on the wire will decrease,  resulting in stress relaxation. When the material is determined, the creep of the wire is related to time, pressure,  tension and ambient temperature. The greater the pressure or tension on the wire and the higher the ambient temperature,  the more serious the creep of the wire,  and the change curve is exponential and increases with time. growing and increasing.
In order to maintain the stability of the holding force of the parallel groove clamp on the wire,  during construction and installation,  there must be enough external force to generate a suitable pressure on the wire to prevent the parallel groove clamp and  the wire from loosening or relative slippage;  After the external force disappears,  the parallel groove clamp should be able to provide a relatively constant pressure on the wire to compensate for the  creep effect of the wire caused by changes in current, temperature, wind speed, corrosion, etc.
When the bolt-type parallel groove clamp is installed,  the torque applied to the bolt or nut often varies from person to person,  and generally no special measuring instrument is used to check the torque,  resulting in different bolts of the same clamp or between clamps installed by different personnel. The resulting stress  on the wire is inconsistent. If the pressure is too large, the wire will creep too much;  if the pressure is too small,  the clamp and the wire will lack sufficient pressure and gripping force in the early stage of operation. The quality of  the spring washer also seriously affects the mechanical stability of the clip. If a poor spring washer is selected,  the plastic deformation of the spring washer will be large after being subjected to external force,  which will cause the installed wire clip to not obtain the proper pressure compensation when the wire creeps.
The H-type parallel groove wire clamp is installed with special hydraulic tools,  and the pressure on the wire is relatively uniform and constant. The connection with the wire is a one-time hydraulic  setting,  so that the inner wall material of the wire clip is embedded in the outer layer of the wire. Because the wire clip and  the outer strand of the wire are the same aluminum-based material,  it can reduce stress relaxation and compensate for wire creep.
The best mechanical stability should belong to the wedge-type parallel groove clamp. Due to the use of the bow-shaped  structure and the wedge block, when the wire creeps due to various reasons,  the bow-shaped structure and the wedge block can compensate for the creep,  and the initial pressure during installation is provided by the special bullet,  which can be achieved by reasonable control of the dose. goal of controlling stress

Product installation method

Installation of single screw insulation piercing clip:
1. Adjust the puncture wire clamp nut to the appropriate position,  and completely insert the branch wire into the branch wire cap sleeve.
2. Insert the main line. If the main line has two layers of insulation,  strip off a certain length of outer insulation at the connection position.
3. Put the main/branch line in the proper position and keep it parallel, first tighten the nut by hand,  and fix the clamp.
4. Tighten the nut evenly with a socket wrench corresponding to the size until the top breaks and falls off,  and the installation is complete.
Installation of twin-screw insulation piercing clips:
1. Unscrew the wire clamp and insert the main wire into the main wire groove. Do not twist the main wire and the knife  ruler. Pay attention to whether the wire diameter range corresponds to this wire clip.
2. Put the branch wire into the branch wire slot. Note the same as above.
3. Tighten with a socket wrench. Disable open-end wrenches.
4. Note that the two nuts should be screwed down in sequence.
5. When tightened to a certain strength, the constant torque nut is broken, and the installation is completed.


Product Deatils

Product packaging

Product application

 
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