Plum blossom contacts grounding rod
The high-voltage switchgear shall break the fault current in case of grid fault; During normal operation, load current shall also be switched on and off, and there must be obvious breaking points, and separable contacts shall be equipped. In addition, in order to facilitate assembly and docking. The high-voltage switchgear will also be provided with butt contacts at appropriate positions; A sliding contact is also arranged between the moving part and the stationary part of the conductive body. There is contact surface resistance for both separable contact, butt contact and sliding contact. The size and stability of the contact resistance have a significant impact on the temperature rise of the switchgear during long-term operation and the dynamic thermal stability under the impact of fault current. There are many factors that determine the contact resistance, such as contact surface condition, contact pressure, material hardness and material resistivity. Throughout many factors, contact pressure is an important factor that has a wide range of changes and can be predicted by designers.
- Description
- Quick Details:
- Product introduction:
- Technical characteristics:
- Scope of application:
- Product parameters：
- Grounding Copper wire :
- FAQ:
- Packaging & Delivery:
- Please Contact Us:
Description
Plum blossom contacts grounding rod
Quick Details:
Place of Origin: China (Mainland) Brand Name: XINCHENG
Product name: Plum blossom contacts grounding rod for power plant Type: Plum blossom contacts (bundled)
Scope of use: Power plant, central cabinet, Indoor busbar, substation busbar
Constitute: Grounding wire, earth rod and earth clamp/earth needle, Plum blossom contacts
Application: Short circuit grounding during maintenance of power plant, central cabinet, Indoor busbar, substation busbar
Characteristics: Temporary Grounding equipment Rated Voltage: 10KV-500KV
Cooper wire’s cross section area:
25 mm² / 35mm² /50 mm² /75mm²/90mm²/95mm²/120mm²/130mm²/150mm²; or customized.
The temperature scope for protective cover: -25+55°C. Rod length: 0.5m, 1m, 2m, 3m or customized.
Grounding copper wire standard: length and wire diameter can be customized according to user needs.
The material of clamps: pure copper silver-plated, imported non-magnetic spring
The material operating rod: Super Epoxy Non-alkali Fiberglass Fabric Tube
Contact material: T2 pure copper Surface treatment: Thick silver plating
Color: Red, green, yellow or as per your requires Package: Portable bag, International Standard Package
Product introduction:
Design idea of plum blossom contact:
Some matters needing attention in the design of electric contact. Take the plum blossom contact composed of spring clamp and milling petal contact finger as an example, aiming at the position where the contact finger clamps the spring; Install insulating mat at the rear end of the contact finger; The difference between the size of the inner circle of the milling finger and the outer circle of the single end and whether the milling finger can be used in disorder are analyzed, and the methods to reduce the contact resistance of the finger are proposed.
The high-voltage switchgear shall break the fault current in case of grid fault; During normal operation, load current shall also be switched on and off, and there must be obvious breaking points, and separable contacts shall be equipped. In addition, in order to facilitate assembly and docking. The high-voltage switchgear will also be provided with butt contacts at appropriate positions; A sliding contact is also arranged between the moving part and the stationary part of the conductive body. There is contact surface resistance for both separable contact, butt contact and sliding contact. The size and stability of the contact resistance have a significant impact on the temperature rise of the switchgear during long-term operation and the dynamic thermal stability under the impact of fault current. There are many factors that determine the contact resistance, such as contact surface condition, contact pressure, material hardness and material resistivity. Throughout many factors, contact pressure is an important factor that has a wide range of changes and can be predicted by designers. Now take the plum blossom contact, which is tightly clamped by spring and composed of milled petal contact finger, as an example, to talk about the design essentials and avoid entering the wrong zone. The so-called “milling of the touch finger” means turning the outer wheel of the touch finger into a blank, and then milling it evenly into pieces with a milling machine.
Manufacturing process of plum blossom contact:
- Electrolytic polishing of non-magnetic stainless steel bracket
- Binding of non-magnetic stainless steel ring tension spring
- The contact piece is finished with T2 copper plate, the surface is coated with thick silver, and it will not change color for a long time after anti-color treatment (bundled quincunx contact 630A-4000A)
Technical characteristics:
Plum contact current and description:
630A (12 pieces) quincunx contact, 630/1000A (18 pieces) quincunx contact, 630/1250A (24 pieces) quincunx contact,
1000A (18 pieces) plum blossom contact (old type),
1250A (30 pieces) plum blossom contact, 1250A (24 pieces) plum blossom contact (old type),
1600A (36 pieces) plum blossom contact,
2000A (48 pieces) plum blossom contact,
3150A (64 pieces) plum blossom contact (old type),
4000A (84 pieces) plum blossom contact,
2500/3150A (64 pieces) plum blossom contact (old type),
Technical characteristics:
According to the amount of silver cadmium oxide in the contact, it is 88%, 85%, 40% and 30% respectively. The input voltage of the cam controller is not higher than 109% of the rated voltage, and there is no obvious fluctuation. When the environmental pollution is light, the electrical life of the contact containing 88%, 85% and 40% silver cadmium oxide is more than 100000 times, and the electrical life of the contact containing 30% silver cadmium oxide is more than 50000 times. The mixed silver point and copper base point contact is applicable to the cam controller with less opening and closing times.
Structural features:
- Electrolytic polishing of non-magnetic stainless steel bracket
- Binding of non-magnetic stainless steel ring tension spring：the ring stainless steel spring has uniform pressure, which can ensure that the radial elastic deformation of each contact piece has uniform contact pressure, so as to effectively control the contact resistance, reduce the heating of the contact part, and improve the reliability and safety of conductivity
- The contact piece is finished with T2 copper plate, and the surface is coated with thick silver. After anti-discoloration treatment, it will not change color for a long time, and the shape is beautiful.
- The ring spring pressure is uniform
- Imported non-magnetic stainless steel material is used to avoid eddy current
- Brush plating with thick silver, strong wear resistance
- Anti-changing treatment to avoid oxidation and falling off of silver layer
Scope of application:
Switch cabinet, distribution room, power plant, Indoor busbar, substation busbar, etc.
Product parameters：
Product parameters：
| Model | Voltage level | Cross sectional area of grounding wire | Grounding wire specification | Configure | Scope of application |
| XC-PL-JDB-1 | 10KV | 25 MM2 | 3*1 +5M | 1 M long grounding rod Grounding wire clamp |
Power plant or central cabinet |
| XC-PL-JDB-2 | 10KV | 25 MM2 | 3*1.5 +10.5M | 1 M long grounding rod Ground needle |
|
| XC-PL-JDB-3 | 35KV | 25 MM2 | 3*2 +8M | 1 M long grounding rod Grounding wire clamp |
|
| XC-PL-JDB-4 | 35KV | 25 MM2 | 3*2 +18M | 1 M long grounding rod Ground needle |
|
| XC-PL-JDB-5 | 66KV | 35 MM2 | 3*2 +18M | Two 1 M long grounding rod Grounding wire clamp |
|
| XC-PL-JDB-6 | 110KV | 35 MM2 | 3*6 +6M | Two 2M long grounding rod Ground needle |
|
| XC-PL-JDB-7 | 220KV | 35 MM2 | 3*6 +6M | Two 3M long grounding rod Grounding wire clamp |
|
| XC-PL-JDB-8 | 500KV | 50 MM2 | 3*6 +6M | Two 3M long grounding rod Grounding wire clamp |
Note: The products in the above table are only conventional products, and we accept customer customization (including the sectional area and length of the grounding wire, the length and number of sections of the grounding rod, and even the number of pieces of the Plum blossom contacts can also be customized)
FRP epoxy resin grounding rod:
Made of high-quality epoxy resin, with good insulation performance, light weight and high strength; The length is optional, and the color can also be customized according to customer requirements.
Grounding Copper wire :
High voltage Earthing copper wire is made of 99.95% pure copper, The multiple diameter is 0.2mm oxygen-free fine copper wire.
Cooper wire’s cross section area:
10mm²/16mm² / 25 mm² / 35mm² /50 mm² /75mm²/90mm²/95mm²/120mm²/130mm²/150mm² or customized.
| Cross section area/mm2 | 10 | 16 | 25 | 35 | 50 | 70 | 95 | 120 |
| Wire diameter/mm | 4.2 | 5.7 | 7.5 | 8.78 | 11 | 12 | 16 | 17 |
| Outside diameter/mm | 7.3 | 7.8 | 9.6 | 11.2 | 12.6 | 16.5 | 21 | 22 |
| Resistance value Ω | 1.980 | 1.240 | 0.790 | 0.560 | 0.400 | 0.280 | 0.210 | 0.160 |
| Safety current A | 90 | 100 | 123 | 150 | 210 | 238 | 300 | 300 |
Trial application: 16mm2 soft copper wire is suitable for personal security grounding wire.
25mm2 soft copper wire is suitable for 10KV-35KV voltage.
35mm2 soft copper wire is suitable for 110KV-220KV voltage.
50mm2 soft copper wire is suitable for 500KV voltage.
70mm2 soft copper wire and 90 mm2 are suitable for higher voltage applications with relatively few applications.
FAQ:
Q 1, Could you accept the sample order and if it is free?
A Yes, we welcome the sample order to test and check quality. And the sample and the delivery fee are not free, as many samples are requested to be sent.
Q 2, How do you ship the goods and how long does it take to arrive?
A The sample is usually transported by DHL, Fedex, UPS or TNT express. We will choose the economical express and transport way according to the goods quantity, or as the requirements of client’s. The express time is usually around 3-7 working days.
Q 3, Do you provide the customized service and OEM?
A Yes, it is available.
Q 4, How about the after sale service?
A Any questions, pls contact us freely! We will service you well !
Our supply ability: 250,000 Piece/Pieces per Month, More specific u can understand us through email.
Our Services:
We are specialized in power and cable equipment and construction tools. According to customers’ need, we can provide the most suitable products and solutions. Ensuring the quality of products, we organize production and make delivery in time, solve the guests’ needs and problems perfectly.
Packaging & Delivery:
Packaging Details:
suitable packing for export. Economic Packing design which will save your transportation cost, or as customer requirements
1.Inside packing: Anti-moisture nylon bag + Carton box + woven belt.
2.Outside packing: carton box or wooden case and pallet.
3.According customer requirement.
Port: Shanghai, Qingdao, Tianjin
Please Contact Us:
Please Contact Us
Miss: Lydia
https://fiberglasshotstick.com
E-mail:[email protected]
WeChat : 86-13752439076 WhatsApp: 86-13752439076
Mob: 86-13752439076 Fax: 86-22-60863016
