Detailed Product Description

1.       General

PRW15-12 outdoor high voltage spraying drop-out fuse provides over load and short-circuit protection to power distribution transformer and line of alternating-current 50Hz and 10kV rated voltage, the fuse with load cutoff device could be used in breaking load current of power distribution line.

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

5.       Main technical parameterssee table 1

Table 1                  Rated Parameters of Fuse

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

Rated voltagekV:24;27Rated short-circuit breaking current (kA)12.5

Minimum short-circuit breaking current5A fuse

power frequency dry withstand voltagekV42  95

power frequency wet withstand voltagekV34  80

thunder impact withstand voltagekV  90  185