PRNT4-15.5, PRNT4-24, PRNT4-40.5 series of high-voltage fuses for overload protection of oil-immersed transformers are suitable for use in power systems with AC rated frequency of 50Hz and rated voltage of 15.5kV, 24kV and 40.5 kV respectively. As the overload protection protection element for power transformer and other power equipment, the fuse is installed in the transformer oil of American type box transformer or other box transformer, and can be co-boxed with transformer and load switch. The oil-immersed transformer overload protection high-voltage fuse can not be used alone, can be connected in series with the transformer backup protection high-voltage current-limiting fuse to form a full range of high-voltage current-limiting fuse. When the overload current exceeds the specified value for a certain period of time, the circuit is opened by the overload high-voltage fuse. When the short-circuit current passes through the fuse, the short-circuit current is opened by the backup high-voltage current-limiting fuse. The product can be widely used in the distribution protection of wind power generation, solar power generation, tide stream power generation and other equipment.

This product consists of two parts: overload protection fuse and plug-in bracket.

1. Model and meaning :
2. This product is composed of overload protection fuse and fuse holder.
2.1 Basic engineering data:

Note:Dual fuse maximum 63A
2.2 See picture 1 for the size and installation of the overload protection fuse
Picture 1,XRNT4-15.5 High voltage fuses for overload protection of oil immersed transformer .

2.3 See picture 2 and picture 3 for the dimension and installation of the plug-in fuse holder
3. Installation steps of fuse wire:
4. Time-current characteristic curve of bay-o-net fuse as below :

Model and meaning

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.