Sunrise Group Co., Ltd.

home products Series of Drop-out fuse HPRW15 fuse

HPRW15 fuse

Product Details:

Usage	High Voltage
Safety Standards	IEC
Breaking Capacity	High
Place of Origin	Zhejiang, China
Brand Name	sunrise electrical appliances
Model Number	HPRW15

Payment & Shipping Terms:

Packaging Details:	Each package contains three (one group) fuse; anti-collision panel is fit among every three fuses. Fuse in paper package

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Detailed Product Description

2. Application ambient conditions

a. The altitude: ≤1000m;

b. The ambient air temperature: -40 min, +40 max, and difference of day temperature should not more than 35;

c. The wind speed: ≤35m/s;

d. Dirty class: III class (porcelain support insulator), IV class (synthetic rubber support insulator);

e. The place without pollution, exploding danger, chemistry corrosive and acute vibration.

3. Reference standard

GB15166.3-1994 Alternating-current high voltage fuse part 3---spraying fuse

GB/T11022-1999 Common specifications for high-voltage switchgear and controlgear standards

GB/T311.1-1997 Insulation cooperation of high voltage power transmission and transformer equipments

4. Description of type

The max breaking current (kA)

Rated current (A)

Rated voltage (kV)

Design series number

Outdoor

Fuse

Spraying

Synthetic rubber support insulator

5. Main technical parameterssee table 1

Table 1 Rated Parameters of Fuse

No.	Item	Unit	Parameters
1	Rated voltage	KV	12
2	Rated frequency	HZ	50
3	Rated current (the base of fuse)	A	100/200
4	Rated current of fuse-link equippedfilament	A	6200
5	Rated short-circuit breaking current (max breaking current)	KA	12.5
6	Power frequency withstand voltage (1min): wet test / dry test (between phases, phase to earth) / disconnected break	KV	34/42/48
7	Lightning impulse withstand voltage: between phases, phase to earth / disconnected break	KV	75/85
8	Mechanical life	Times	500

6. Structure of the fusesee figure 1

The fuse is composed of support insulator, installation board (the size is shown in figure 2), active contact, upper static contact, upper connection terminal, fuse tube (fuse-carrier), bottom static contact, bottom connection terminal and so on.

Figure 1. Structure of the fuse

Bottom connection terminal

Installation

board

Fuse tube

Bottom static contact

Support insulator

Upper connection terminal

Active contact

Upper static contact

Figure 2. The size of installation board

7. Operating principle

The fuse is in series to the power line when it is in operation, in normal operation, fuse-link (filament) makes active joint of bottom active contact in fuse tube (fuse-carrier) be locked, fuse tube (fuse-carrier) is closed under the press force of static contact spring. When fault is occurred in system, fault current make fuse-link melt rapidly, arc comes into being in arc-extinguishing tube. Aerogenous material mounted in fuse tube and assistant arc-extinguishing tube in fuse-element generate a large number of gases at the action of arc, then enough pressure is formed in fuse tube, and strong longitudinal magnetic field comes into being in the fuse tube and keep arc elongating rapidly, arc will be extinguished when the current reaches zero. After fuse-element has been melted, active joint is released, the fuse tube falls off quickly and forms clear disconnected distance at the action of spring pressure of upper and bottom static contact and the weight itself.