General
Drop-out fuse and pull loads falling type fuse protection for outdoor high-voltage electricalappliances, installed in the high-voltage side of distribution transformeror distribution lines branch trunk road, used as a transformer and line short-circuit, overload, and points. All load current. Drop
-outfuse holder and fuse from the insulating tube 2 parts. Static contact bracket installed in the insulation at both ends, moving contact is installedon both ends of fuse tube, fuse tube from the inner arc tube and the outer phenolic Aldehyde paper tube or epoxy glass cloth into the pipeline. Pull load drop fuse increase of auxiliary contact and interrupter cover for the points, combined load current.
Drop-fuse during normal operation, the fuse tube fuse with the formation of closed position after tensioning. When a system failure, the fault current to fuse rapidly fuse and form arc, arc tube by the electric arc burning, Decomposition of large quantities of gas, so that the formation of a high pressuretube, and the formation of vertical wind along the pipeline, and the arc was quickly stretched out. Fuse Fuse, the lower part of moving contacts lost tension turned down, locking machines, the release of fuse Tube, drop tube fuse to form a clear breaking position. When you need to pullload, dynamic contact with the insulating rod pull, this time the initiative to help contact remained static contact, continue to use the insulating rod then moving contacts, auxiliary contact can be divided into Away in the auxiliary contact arc between the arc in the eradication of cover slit was elongated at the same time interrupter cover produce gas, in the zero-current will arc out.
Technical parameter
| Type |
Rated
Voltage
(KV)
|
Rated
Current
(A) |
Breaking
Current
(A) |
Impulse
Voltage
(BIL) |
Power-
frequency
withstand
Voltage
(KV) |
Leakage
distance
(mm) |
Weight
(kg) |
Dimensions
(cm) |
| HRW12 |
15 |
100 |
6300 |
125 |
45 |
400 |
6.5 |
49×31×12 |
| HRW12 |
15 |
200 |
12500 |
125 |
45 |
400 |
6.5 |
49×31×12 |
Audited Supplier 
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