XRNT4-15.5, XRNT4-24, XRNT4-40.5 High voltage fuses for oil immersed transformer backup protection
The series high voltage current limiting fuses of XRNT4-15.5, XRNT4-24, XRNT4-40.5 for oil immersed transformer protection, they are suitable for rated AC power of 50Hz, rated voltage of 15.5kV, 24kV, 40.5kV power system.
As a power transformer and other power equipment short circuit fault protection element. The fuse is installed in the transformer oil of the American transformer , which can be used in the same box with load switch of transformer .
The high voltage current limiting fuse can be connected in series with the high voltage transformer overload protection fuse to form the high voltage current limiting fuse of full range protection. The high voltage fuse will break the circuit , when the overload current exceeds the specified value for a little time. The high voltage backup fuse will break the short circuit current , when the wrong current passes through the fuse .The product can be widely used in equipment distribution protection of wind power generation, solar power generation, tidal power generation and so on .
This product has the characteristics of not causing any pollution to transformer oil when breaking short circuit current, stable time-current characteristic curve, significant current limiting characteristics of backup fuse, strong breaking ability, the maximum breaking current can reach 50kA.
1. Model and meaning :
| Fuse model number | Rating current of fuse | Dimmension(ΦC*A) | B | Type of wiring screw |
| XRNT4-15.5 | 20, 25 , 31.5 , 40 , | Φ53*216 | 248 | M6 |
| 50 , 63 , 80 , 100 , 125 | Φ53*324 | 356 | M6 |
| 150 , 175 | Φ53*373 | 405 | M6 |
| 200 , 250 | Φ76*462 | 494 | M10 |
| 315 | Φ76*567 | 600 | M10 |
| XRNT4-24 | 25A , 31.5A , 40A , 50A , 63A , 80A , 100A | Φ76*462 | 494 | M10 |
| 125A , 160A , 200A | Φ76*567 | 600 | M10 |
| XRNT4-40.5 | 10A , 16A , 20A , 25A | Φ76*462 | 494 | M10 |
| 31.5A , 40A, 50A , 63A | Φ76*567 | 600 | M10 |
| 80A , 100A | Φ76*650 | 682 | M10 |
| 125A | Φ76*750 | 782 | M10 |
2.Time-current characteristic curve of XRNT4 fuse as below :
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 20 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 factories 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, provide 5% free rate of change.
5.How about your delivery time?
The delivery time with 7-10 working days after get your deposit. Our factory is located in Xi'an ,China. In terms of quality and strength, we are both ahead of the market . 6.We can accept payment way:
TT/LC/DP /STS ORDER
