Power fittings are metal accessories that connect and combine various devices in the power system and play a role in transferring mechanical load, electrical load and certain protection.
According to the function and structure, it can be divided into suspension clamp, tensioning clamp, UT clamp, connecting fittings, connecting fittings, protective fittings, equipment clamp, T clamp, bus fittings, drawing fittings and other categories; According to the use can be used for line hardware and substation hardware.

Product Details

According to the main performance and use of the hardware, the hardware can be roughly divided into the following categories

1), suspension hardware, also known as support hardware or suspension clamp. This kind of hardware is mainly used to hang the wire insulation substring (mostly used for linear poles) and hang the jumper on the insulator string.

2), anchoring fixtures, also known as fastening fixtures or wire clamp. This kind of hardware is mainly used to tighten the terminal of the wire, so that it is fixed on the wire insulator string, and is also used for the fixing of the lightning rod terminal and the anchoring of the cable. Anchor fixtures bear all the tension of wires and lightning arresters, and some anchor fixtures become electrical conductors

3), connecting hardware, also known as hanging parts. This kind of fittings is used for connecting insulator strings and fittings to fittings. It bears mechanical loads.
4), continuation of gold tools. This kind of hardware is specially used for connecting various bare wires and lightning arrester wires. The connection bears the same electrical load as the wire, and most of the connection fittings bear all the tension of the wire or lightning rod.

 

5), protective equipment. This kind of equipment is used to protect wire, insulator, etc., such as the pressure balancing ring for protecting insulator, the heavy hammer for preventing the pulling of insulator string, and the anti-vibration hammer and wire protection bar for preventing the vibration of wire

6), contact with hardware. This kind of hardware is used for hard bus, soft bus and electrical equipment to be connected to the wire terminal, the T connection of the wire and the parallel connection of the non-bearing wire, etc. These connections are electrical contacts. Therefore, high electrical conductivity and contact stability of contact fixtures are required.

7), fixed fixtures, also known as power plant fixtures or high current bus fixtures. This kind of fixture is used for fixing and connecting various hard or soft busbars and pillar insulators in power distribution devices. Most of the fixed fixture is not used as a conductor, but only plays the role of fixing, supporting and suspending. However, since these fittings are used for high current, all components should have no hysteresis loss.

Product Description

Tension clamps are mainly used to fix conductors and lightning conductors in overhead power lines or substations, and connect them to tension insulators through connecting hardware, or to connect lightning arresters to towers.

According to the different structure and installation method, it is divided into four categories: bolt type, compression type and wedge type, and pre-twisted type.

NY tension clamp (hydraulic type, steel anchor welding) is mainly used to fix the wire to bear the tension of the wire, and hang the wire to the hardware on the tension string or tower.
 

Product features and Installation matters
Features:
a. The clip body is made of high-strength aluminum steel material.
b. The appearance is smooth and the service life is long.
c. Easy to install and use.
d. There is no hysteresis loss, and it is a low-carbon, energy-saving certified product.

Installation Matters:
1. Clean one end of the crimped wire for about 1m and apply conductive grease.
2. Put the cleaned aluminum tube (outer diameter D) into the wire end and pull it 1m away from the wire end. 3. Use a vernier caliper or a tape measure to measure the size l 2 of the front end tube of the steel anchor, measure the length of the steel core to be stripped from the end O of the wire ON= l 2 + Δl mm (Δl is 15mm), make a mark, and tie it at a distance of 20mm from the mark Take the newly tied wire P.
4. Open a section of aluminum strand at the end O, and fasten the exposed steel core end with a binding wire. Then use a cutter (or aluminum wire stripper) to cut the outer and middle aluminum strands at the mark N. When cutting the inner aluminum strands, only cut to 3/4 of the diameter of each strand, and then break the aluminum strands one by one. When stripping the aluminum wire, it is strictly forbidden to bruise the steel core. )
5. Crimp the steel anchor
A. Select the steel pipe die "Cd#" that is consistent with the outer diameter d of the steel anchor. The installation instructions for the NY tension clamp in the substation should verify that the diagonal angle of the hexagonal die is dmm;
B. Press the steel After the core is cleaned, rotate and insert it into the bottom of the steel anchor along the stranding direction of the steel core, and the
end of the steel anchor exposes the steel core with a length of about 15mm; At this time, the wires on both sides should be
kept horizontal with the steel anchor, and consistent with the axis of the hydraulic press, so as to reduce the possible bending of the pipe after being compressed.
D. Crimp the front end pipe of the steel anchor. The direction of crimping is from the groove of the pipe to the pipe mouth. When applying pressure, the two adjacent molds
should overlap at least 5-10mm. After compression into a regular hexagon, the distance S between the opposite sides of the regular hexagon should be verified. The allowable value of S is: S=(0.866*0.993d)+0.2. After molding, use a standard caliper to check the size of the opposite side distance after pressing. (Note: The actual pressure of the hydraulic pump should not be lower than 80Mp, and when the pressure reaches the specified value, it should be maintained for 3-5s). Continue hydraulic operation only after the standard is met.

Technical parameters

Catalog  No.	Suitable Conductor	Dimensions(mm)						Slip Strength(kN)	Weight (kg)
		D	D1	d	L	L1	R
NY-185/30N	GJ-185/30	36	16	16	525	55	10	59.0	4.3
NY-240/30N	GJ-240/30	45	18	18	545	55	10	69.51	4.4
NY-240/40N	GJ-240/40	45	18	18	545	60	11	76.5	4.4
NY-300/40N	GJ-300/40	50	18	18	575	65	12	85.4	6.5
NY-300/50N	GJ-300/50	50	18	18	575	65	12	96.0	6.5
NY-400/35N	GJ-400/35	55	18	20	605	65	12	93.6	7.3
NY-400/50N	GJ-400/50	55	20	20	610	65	12	112.0	7.5
NY-500/35N	GJ-500/35	65	20	20	640	70	14	108.3	7.9
NY-500/45N	GJ-500/45	65	20	20	645	70	14	117.1	8.1
NY-630/45N	GJ-630/45	70	20	22	530	80	16	133.6	8.6

Product details

Products real shot

First, Material selection and screening.

1. According to the functional requirements and use conditions of power fittings, select high-quality metal materials that meet the standards, such as carbon steel plate, stainless steel plate, copper plate, etc.

2. Strict screening and inspection of the selected metal raw materials to exclude unqualified materials and ensure reliable quality.
 

Second, processing and forming.

1. Develop the processing plan and process flow of the hardware, select the appropriate machine and equipment for cutting, stamping, bending and other processing operations, and accurately control the size, Angle, pressure and other parameters.

2. According to the requirements of different types of goldware products, the corresponding molding process is used, including rolling, casting, forging, welding, etc., to ensure that the product structure is tight and not easy to deformation.

Third, surface treatment.

1. Surface treatment of the formed fittings, including rust removal, grinding and other processes, to achieve the requirements of finish and anti-corrosion effect.

2. Select appropriate surface treatment methods, such as galvanizing, spraying, electrophoresis, etc., to enhance the corrosion resistance and beauty of the surface of the hardware.
 

Fourth. Assembly and inspection

1. According to the product design requirements and process flow, the assembly and combination of fittings are carried out, and the connection and functional performance of each part are strictly checked to ensure that the fittings have a reliable working state.

2. Inspect the finished products, including appearance inspection, pressure performance test, mechanical performance test, etc., to ensure that the products meet the requirements, and make the unqualified products be recycled, repaired or eliminated.

We have passed the above steps, the production of electric power fittings will be completed. In the above process, there is a certain dependence between the various steps, and each step has its own process details and operational points, which need to be carefully controlled and managed. Only in this way can we ensure the production of high-quality, high-performance power fittings products.
 

Hebei Leicheng Electric Power Technology Co., Ltd. is a professional engaged in power transformers, high and low voltage switchgear and related products R & D, production, sales and service of science and technology enterprises.

Since its establishment, the company has been committed to the road of professional development. With strong technical force, advanced equipment at home and abroad, innovative concept and rich manufacturing experience, has passed ISO9000 certification, the use of CAD, to provide customers with suitable regional characteristics of environmental protection, energy saving, low-carbon, high-quality products to meet the basic requirements of the market and different customers. Products are also exported to Central Asia, Africa, Southeast Asia, the Middle East, South America and other countries and regions.

At present, the company mainly produces high voltage/low voltage distribution cabinets, prefabricated substations, distribution transformers, high voltage/low voltage switches and other products.

Various power fittings and accessories, such as transformer support frame, cable hoop, bolt, wire clamp, cross arm and other products are numerous. 

Steel products, such as H-shaped steel, channel steel, steel pipe, Angle steel, hot dip galvanized iron wire, etc., are also our main products!

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You can rest assured that the packaging of the product, as the last link we strictly control!

Q: Are you a Manufacturer, factory or Trading company ?
A: Yes, We are engaging in the research and development, production and operation of transformer for over 10 years.

Q: What's your warranty terms?
A: We offer 12 months warranty time.

Q: Production Time?
A: In general, it take 4~6weeks and it depend on the different style.

Q: What's your payment terms?
A: Pay by T/T and  L/C is acceptable.

Q: How do you conduct quality control in your factory?
A: We implement 100% QC inspection to ensure every product is qualified. We have over 10 times QC inspections during the manufacturing process from raw material to the final products.Each of our unit has  3C  certificate. If you need any other Certificate, we can help you to apply it.

Q: Do you have the products in stock?
A: Normally no. All our products produce depending to your order quantity.

 Q: What should provide to make custom transformer ?
A: Technical drawing and technical specification document are the best, or you can tell us some details technical specification date as below "Quotation and Ordering Required Information".

Q: Could I have your catalog and price list for trial order in MOQ quantity?
A: All of our products are showing on Made-in-China or official website, you are always welcome to ask us to get more information directly.

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