High Voltage Current LImited Back Up Fuse
Protect the Power Equipment
XRNT Type: 12kV, 24kV and 35kV, 3A...315A
For Gas And Air Insulated Switch and Outdoor Switch.
XRNP Type: 12kV, 24kV and 35kV, 0.2A...3.15A
For Current Transformer and Voltage Transformer
Standards:
IEC 60282-1, VDE 0670 Part4, DIN 43625
| Model of fuse | Rating current(A) | Size | Breaking capacity (KA) |
| XRNP1-3.6 | 0.2, 0.3, 0.5, 1, 2, 3.15 4.5 | Ø25*195 | 50 |
| XRNP1-7.2 |
| XRNP1-12 |
| XRNP1-24 | 0.2, 0.3, 0.5, 1, 2, 3.15 | Ø25*324 | 50 |
| XRNP1-40.5 | Ø25*465 | 31.5 |
| XRNP2-7.2 | 0.5, 1, 2, 3.15 , 6.3, 10, 16 | Ø51*192 | 50 |
| XRNP3-7.2 | 0.5, 1, 2, 3.15, 6.3, 10 | Ø45*210 | 50 |
| XRNP-7.2 | 0.5, 1, 2, 3.15, 6.3, 10, 16 | Ø51*210 | 50 |
| XRNP2-12 | Ø51*192 | 50 |
| XRNP3-12 | 0.5, 1, 2, 3.15, 6.3, 10 | Ø45*210 | 50 |
| XRNP2-40.5 | Ø51*465 | 31.5 |
| XRNP3-40.5 | 0.5, 1, 2, 3.15, 6.3 | Ø45*465 | 31.5 |
| XRNP6-40.5 | 0.5 | Ø40*440 | 31.5 |
These fuses can be used in indoor system of 50Hz and 3.6kV, 7.2kV, 12kV, 24kV, 35kV and 40.5kV. It used together with other switch equipments such as air load break switch, SF6 gas load break switch, vacuum contactors. It can protects electric transformers and other electric equipments against over load current or circuit break current. It is also a neccessary accessoriy for high-voltage switchgear, Ring Main Units, transformer substation.
Design and construction
Wuhuan HV Fuse-links have parallel connected pure silver fuse-elements. The design and method of production of the elements ensures narrow tolerances of time-current characteristics.
The fuse elements are wound on a ceramic support and are attached to the silver plated connection caps by means of spot-welding. The connection caps are fitted inside the silver plated copper end caps by spot welding.
The copper end caps themselves are press-fitted onto the porcelain tube which is glazed inside and outside.
The end caps are furthermore mechanically fixed to the porcelain tube and additionally sealed by a durable elasticsealing medium. This sealing method has been proven over many decades of positive field experience and ensures tightness against ingress of humidity.
Striker pin Wuhuan HV Fuse-links are available with striker pins of the force 80N and 120N. The characteristics of both striker pins corresponds to IEC 60282-1, VDE 0670 Part 4 and are of the energy category "medium". The striker pin system is connected by means of a high resistance parallel conductor. After melting the main fuse elements the striker pin will indicate the operation status of the fuse and open a load break switch or actuate a micro-switch for remote indication.
Wuhuan HV Fuse-links up to and including 160 A with a striker pin of 80 N are equipped with an integrated temperature limiter as standard. The temperature limiter is fitted inside the striker pin system. The XIKAI striker pin system therefore has the following functions: thermal protection of adjacent equipment, especially SF6 Insulated switchgear limitation of failure current at the overload region improved properties for the switch-fuse combinations according IEC 60420 The integrated temperature limiter avoids inadmissible high temperatures - no matter for whatever reason they are generated - in gas-insulated switchgear or narrow switchgear enclosures. By means of a melting activator temperatures inside the fuse link enclosure are limited to below approx. 100°C. This design especially considers continuity of current supply for the end user for as long as possible. The system reacts in such a way that short time overloads do not cause the fuse to interrupt the circuit unnecessarily. Only when inadmissible values are exceedes the fuse will open the switch via the striker pin. Higher temperatures on plastic fuse enclosures in SF6-insulated switchgear can be caused by: selection of a fuse rating too low for transformer protection fuses are loaded with fault currents below the minimum operating current deterioration of fuse links caused by transient fault currents (e.g. lightning strike) transformer faults currents (e.g. winding short-current) overloading of the fuse when loaded with currents as described in IEC 420 Test Duty 3 additional temperatures rise because of poor clip fitting Fuse-links with integrated temperature limiter are compatible with standard Fuse links. All coordination schedules can be used. Characteristics of the strikers | Type | Rated Voltage
(kV) | Fuse Current
(A) | Dimension
ØA*L(mm) | Weight
(kg) | Breaking Current
(kA) |
| XRNT1-7.2 | 7.2 | 3.15,4,5,6.3,10,16,20,25,31.5,40,50,63 | Ø51*292 | 1.8 | 50 |
| 71,80,100,125,160 | Ø76*292 | 3.8 |
| 200,224,250 | Ø88*292 | 3.8 |
| XRNT1-12 | 12 | 2,3.15,4,5,6.3,10,16,20,25,31.5,40,50,63 | Ø51*292 | 1.8 | 50 |
| 71,80 | Ø76*292 | 4.6 |
| 100,125 | Ø76*292 | 3.8 |
| 160,200 | Ø88*292 | 3.8 |
| 224,250 | Ø88*442 | 3.4 |
| 315 | Ø88*537 | 8.2 |
| XRNT1-24 | 24 | 6.3,10,16,20,25,31.5 | Ø51*442 | 2.3 | 50 |
| 40,50,63,71,80 | Ø76*442 | 4.6 |
| 100,125 | Ø88*442 | 5.4 | 40 |
| 160,200 | Ø88*537 | 8.5 | 31.5 |
Xi 'an Wuhuan Special Fuse Co., Ltd. is a high-technology manufacturer company established by Wuhuan Electric Group in Xi 'an, Shaanxi Province, China's high voltage electric production base in 2000. It Mainly engaged in the development, design, manufacture, sales and service of fuses and other high voltage appliances. The main products of the company are high-voltage current limiting fuses, which are used in indoor 50HZ/60HZ power systems with rated voltage of 3.6-40.5KV. As American power transformer, Europe type power transformer, high voltage motor, voltage transformer, power capacitors and other electric equipment overload and short circuit protection, and in other appliances such as: load switch, vacuum contactor etc, protection circuit and complete sets of electrical equipment from damage by excessive overload current and short circuit current. The company has high-quality technical personnel, professional fuse manufacturing and testing equipment and advanced modern enterprise management concept, its product categories, production scale and sales revenue are growing at a high speed. Wuhuan Company implements ISO9001:2000 quality system standard, uses MCAD development and design, with the help of Intuitive ERP and advanced testing equipment to ensure the reliability of production and high quality products. All the products have passed the type test of the national high voltage electrical apparatus quality supervison and inspection center ,and are in line with the national GB/T15166.2 standard and IEC60282 standard of the International Electrotechnical Commission.
New products:
SDLDJ and SFLDJ & SDMDJ full-range protection high-voltage current limiting fuses developed by our company are mainly used for overload and short-circuit protection of domestic power generation transformers. This series of products complete specifications, rated current up to 100A, products have passed the national high voltage electrical quality supervision and inspection center type test.
Quality standards of the company:
We fully implement GB/T15166.2 and IEC60282(International Electrotechnical Commission) technical standards, product quality in line with the British BS standard, German DIN standard. Rigorous design, advanced technology, timely service, the company's quality system for the implementation of the quality policy to provide a full guarantee.
Our products:
1.High voltage fuse for overload protection of oil-immersed transformer
2.High voltage current limiting fuse for backup protection of oil-immersed transformer
3.High voltage current limiting fuse for power transformer protection
4.High voltage current limiting fuses for protection of 40.5kv transformer
5.High voltage current limiting fuse for full range protection of power transformer
6.High voltage current limiting fuse for protection of high voltage motor
7.High voltage current limiting fuse for vacuum contactor fuse (F-C) combination appliance
8.High voltage current limiting fuse for protection of voltage transformer
9.High voltage current limiting fuse for power capacitor protection
10.XRNT-15.5Q Full-range high-voltage current limiting fuse for transformer protection (integral)
11.Full range high voltage current limiting fuse for XRNT-40.5Q transformer protection (integral)
1.Are you manufacture?
We are a professional factory with more than 10 years of experience,Our projects supplied to Airprot/Subway/Railway/power station.
2.What is your technical advantages?
Our engineers worked in the power distribution industry field for 20~30 years.In particular, in non-standard customization of electric field, High altitude, non-standard voltage frequency field.
3.What is your price advantages?
we have 5 branch factorier for electric components,all raw materials are one stop shopping,so we can save the value for you!
4.How about your quality advantage?
We are 100% guarantee the quality for 3 years.
5.How about your delivery time?
The delivery time with 1-6 working days after get your deposit.Our factory is located in
Xi'an , Shannxi . In terms of quality and strength, we are both ahead of the market .
6.We can accept payment way:
TT/LC/DP /STS ORDER
