HRW11A-12D/100(200)-6.3(12.5) AC high-voltage falling type fuse cutout (three phases linkage grounding)
Application:
It is used to prevent the short circuit or over load situation of the power transmission and distribution wire or power transformer in the power system of 12kV rated voltage and 50Hz rated frequency.
Characters:
1 The fuse’s three phases are in same seat and it can be separately operated. It can achieve the automatic earth grounding in three phase linkage method. Under close situation, it can’t achieve earth grounding and under earth grounding situation, it can’t be closed, which can prevent the operation err.
2 It has good explosion proof ability and strong dirt Resistance ability. Besides, it has small electricity resistance ability, small volume, light weight and good safety reliability.
3 It can be easily installed and used. It can be applied in severe weather conditions and dirty environments.
Main technical parameters
It is used to prevent the short circuit or over load situation of the power transmission and distribution wire or power transformer in the power system of 12kV rated voltage and 50Hz rated frequency.
Characters:
1 The fuse’s three phases are in same seat and it can be separately operated. It can achieve the automatic earth grounding in three phase linkage method. Under close situation, it can’t achieve earth grounding and under earth grounding situation, it can’t be closed, which can prevent the operation err.
2 It has good explosion proof ability and strong dirt Resistance ability. Besides, it has small electricity resistance ability, small volume, light weight and good safety reliability.
3 It can be easily installed and used. It can be applied in severe weather conditions and dirty environments.
Main technical parameters
| Type | HRW11A-12D/100-6.3 | HRW11A-12D/200-12.5 |
| Rated voltage (kV) | 12 | |
| Rated current (A) | 100 | 200 |
| Rated breaking current (kA) | 6.3 | 12.5 |
| Breaking property | It can break any short circuit or overload current that is 6.3kA or below. The minimum breaking current is 5A. | It can break any short circuit or overload current that is 12.5kA or below. The minimum breaking current is 15A. |
| Effective value of 1 min power frequency dry withstand voltage (kV) | 42 | |
| Effective value of 1 min power frequency wet withstand voltage (kV) | 30 | |
| Peak value of lightning impulse withstand voltage (kV) | 75 | |
| Temperature increase, ℃ | 35 | |
| ground resistance＜μΩ | 1000 | |
