Last passage, we mainly introduce the type of the suspension clamp. In this passage, we will still talk about other type of suspension clamp. Another topic in today’s passage is how to choose a good suspension clamp, which is the important part.
C stands for suspension clamp
T stands for fixed
S stands for corona type
MGU type suspension clamp mainly used for overhead power lines and substation. They suspend the conductor and the lightning protection wire on the insulator. They also light protection wire on the tower by connecting the hardware. The material is melleable cast iron and aluminum alloy.
This kind of clamps hangs the wire on the linear pole tower in the heavy snow area. The wedge suspension clamp used on the linear tower with the huge tensile strength.
Materials:
clamps and plate—melleable cast iron; cosed pin—stainless steel; spare parts—steel
All the materials are againest corrosion with hot-dip zinc coating.
They include bolts from two suspension clamps and a pair of hangers. The top clamp and bottom clamp hang without interfere.
The advantage of installation and usage:
Reduce cost by using two stereotyped clamp with making two plates only.
The independent design of the upper and lower clamp makes the hull roated around the center.
The clamp can lean to the side with higher tension when the tension of two sides is imbalance. The higher tension can avoid the extra bending movement of hanging plate. The movement may result in the inability of the clamp to be offset.
The independent of the clamp provide the convenience for line channeling. It is also convenience for construction, operation and maintenance.
As the voltage level rises, the conductors of each phase in the line progress from two-split to three-split, four-split, six-split, and eight-split.
The suspension clips for split jumpers suspend split conductors.
The suspension clamp for double split jumper can solve the technical problem. The problems are the installation of dry-shaped tower, tension tower and corner tower. They are easy to damage and uneven in the construction of power transmission line.
The suspension clamp for split conductor is convenient in installation. It also has reasonable structure and got the beautiful shape of the jumper.
There are other three type of jumper suspention clamp. They include four-split jumper suspension clamp, jumper brackets and overhead line suspension clamp.
Large span: the span is over meter and the height may reach 100 meter.
Why use: the wire needs to bear a large tension. We need to make sure the wire clamp release the wire when the wire break down. The wire clamp also have a large hanging angle and a large radius of curvature.
Types: Multi-pulley; Crawler; Roller
We analyze the stress of the lower pulley, roller and crawler calmps on the wire. The main difference lies in the number of fulcrums and the degree of density. The density includes “sparse”, “dense” and “very dense”.
When the fulcrum reaches a certain density, the stiffness of the wire plays a considerable role. Then the radius of curvature of the wire is close to the radius of the clip.
The suspension clamp shoud able to bear the full load of the wire when hanging the wires.
The wire cannot slide in the clamp or get out of the insulator string. This is because the system is in normal operation or broken.
When hanging the lighting protection line, the suspension clamp can support the whole load of the lighting protection line within the vertical span.
The lighting protection wire is not allowed to slide in the wire clip when the tension is unbalance.
Suspended clamps could bear the combined load. The loads contains vertical and horizontal loads of conductors or lightning conductors.
The majority load of the conductor or lightning protection line may occur. After considering the safety factor, it should not be less than or equal to the failure load of the wire clamp.
Majority load is the comprehensive value of the self-weight, ice-covered weight and horizontal wind load of the guide line or lightning protection line. The national standard is the safety factor of mechanical strength. The safety factor under normal conditions is 2.5.
Grip strength refers to the determination of the grip strength value of the clamp. The clamp on the conductor install under the specified test conditions.
The suspension clamp should have a certain grip on the wire or the lightning protection wire. The grip on the lightning protection wire have uneven icing or uneven sealing load. The sealing load is under the condition of line operation. This means the wire should not slip out of the wire clamp under such conditions.
Suspension angle:
Suspension angles of the strands on both sides of the suspension point may fluctuate. This is becuase the differences between the span and height of the tower. This difference induce by terrain variation. Another reason is the changes in the conductor and lightning protection wire due to ambient temperature and load change.
The method to avoid the damage of the stranded wire is to increase bending stress at the outlet of the clamp. Thus, a necessary check should carry out. The check ensure the actual hanging angle of the outlet on both sides of the wire clip. To make sure it meet the national standards.
National standard is the suspension angle of the suspension clamp. The angle should not be less than 250. The suspension clamp’s curvature radius should be at least 8 times the diameter of the installed wire.
Suspension Clamp, Service Clamp, Anchoring Clamp, Tension Clamp & High Tension Clamp are some of the crucial components of the AB Cable System. This blog helps you understand the material used for manufacturing, technical features and advantages of various clamps.
Aerial Bundled Cable (ABC) is a new concept for power distribution. It delivers improved safety and reliability, lower power losses, voltage stability, and ultimate system economy by lowering installation, maintenance, and operation costs, compared to the traditional bare conductor OH distribution system.
Axis Suspension Clamps for Insulated Neutral Messenger Systems consist of a body, a movable link, and an adjustable lock. This item is used in conjunction with a pig-tail hook or bracket to suspend and grasp the insulated neutral messenger of an LV-ABC system without destroying it and using an adjustable lock that accepts a variety of cable sizes.
Suspension clamp is also known as suspension fitting or clamp suspension. It is made to suspend the cables or conductors to the pole/ tower.
The clamp works with a variety of cables and conductors. The ABC cables are suspended from the suspension clamp at various angles, providing sufficient support and protection.
Body: UV and weather-resistant, high strength engineering plastic.
You will get efficient and thoughtful service from Electric Powertek.
Movable Link: UV and weather-resistant, high strength engineering plastic.
Lock: UV resistant, high strength engineering plastic.
NFC 33-040 and other international standards are met or exceeded.
Long life, safety, cheap maintenance, and lower lifetime cost are all advantages of this product. Engineering plastics give increased insulation, strength, and work on live lines.
Installation is simple and requires no tools. The design allows for easy turning in congested situations by facilitating longitudinal and transverse movements.
Bracket Feature:
It has aluminium alloy with high strength and is corrosion resistance.
M14 or M16 bolts or 20x0.7mm SS straps are used for mounting.
The suspension clamp is kept from turning over thanks to an incorporated metal stopper.
Suspension clamps keep the conductor safe immediately at the point of installation.
It ensures a safe and viable mechanical connection, accomplished by proper longitudinal grip control.
Service Clamps for Insulated Neutral Messenger System (SAM) is used in conjunction with a bracket or other supporting hardware to strain the insulated service conductor of an LV-ABC system without causing damage to the cable's insulation. It connects service lines to homes or for street lighting.
Body and Wedges: UV resistant, high strength engineering-plastic.
Bail: Stainless Steel.
Exceeds NFC33-042 and other international standards.
Can withstand harsh environments, resulting in an extended life, safety, low maintenance, and lower lifetime costs.
Has engineering plastics that provide insulation, strength, and the ability to work on live lines without additional tools.
Two clamps with a bracket for large-angle assembly allows easy turnings. Captive Design Clamp with a bracket for straining saves time and money during installation.
Heat-resistant with M14 or M16 bolts or 20x0.7mm SS Straps for mounting.
It is possible to mount up to 6 Service Clamps.
>>Shop for more cable fittings here
Anchoring two or four core insulated bundled wires with equal cross-sectional areas is done with Anchoring Clamps for Self-Supporting System (ACS). The clamp is bolted together and prevents damage to the cable insulation.
Clamping Plates: Galvanized steel
Wedges: UV and weather-resistant, high strength engineering-plastic
Bolts: Galvanized steel
Can easily sustain the load of the cable size accommodated.
It accepts a variety of wire sizes and has no replaceable parts, making inventory management easy.
The wires are inserted easily due to the spring mounting.
Withstands harsh circumstances, resulting in an extended life, safety, less maintenance, and a lower total cost of ownership
If you want to learn more, please visit our website suspension clamp bracket.