XRNP High Voltage Fuse

分类 Fuse Tube

Specialized XRNP current-limiting fuse, dedicated to short-circuit and overload protection for 3.6kV-40.5kV voltage transformers, ensuring safe and stable operation of PT systems.

其他信息

Product Details:

Product Overview

The XRNP series high voltage fuse is a professional current-limiting protective component specifically designed for voltage transformer (PT) protection in 3.6kV-40.5kV AC power systems (50Hz). It is mainly used for short-circuit and overload protection of voltage transformers, as well as protection of related auxiliary equipment in PT circuits. With its excellent current-limiting performance, high breaking capacity, and precise fusing characteristics, it can quickly cut off fault currents in milliseconds, effectively protecting PTs from damage caused by short-circuit currents and overloads, and ensuring the safe and continuous operation of the entire power measurement and control system. It is widely applied in power substations, industrial and mining enterprises, and other scenarios with high-voltage PT equipment.

Core Features

Professional PT Protection Design: Specifically developed for voltage transformer circuits, it features low power consumption and low temperature rise, with a fast response time to quickly isolate faults and prevent PT burnout.
High Breaking Capacity: Adopts advanced current-limiting structure with a rated breaking capacity of 50kA, which can quickly limit fault currents to a safe range before the peak value, minimizing the impact of short-circuit currents on PTs and power grids.
Precise Fusing Characteristics: Equipped with a high-sensitivity melt, calibrated strictly according to PT operating parameters, ensuring accurate response to overload and short-circuit faults. The fusing characteristic error is less than ±10% for reliable protection.
Durable Ceramic Structure: The outer tube is made of high-strength alumina ceramic, which has excellent high-temperature resistance, pressure resistance, and insulation performance. It can withstand the high temperature and pressure generated during arc extinction, ensuring long service life.
Easy Installation & Wide Compatibility: Designed for indoor cabinet installation, with compact structure and standardized size, suitable for most medium-voltage switchgears and PT cabinets. Factory-calibrated, no additional adjustment is required during installation.

Model&Meaning

Technical Specification

Models	Ratedvoltage (KV)	Rated current of the fuse links(A)	Rated breakingcurrent (KA)	Dimensions (mm)		Weight (Kg)
Department	Ratedvoltage (KV)	Rated current of the fuse links(A)	Rated breakingcurrent (KA)	Fig.	L	Weight (Kg)
XRNP1	3.6	0.5, 1, 2, 3.15, 6.3	50	Figure 1	142	0.19
XRNP1	7.2	0.5, 1, 2, 3.15, 6.3	50		142(195)	0.19(0.22)
XRNP1	12	0.5, 1, 2, 3.15	40		195	0.22
XRNP1	24	0.5, 1, 2, 3.15	40		355	0.43
XRNP1	40.5	0.5, 1, 2, 3.15	50		465	0.55
XRNP2	12	0.5, 1, 2, 3.15	50	Figure 2		1.12