Specification
FN5-12R(L)model indoor AC HV load break switch-fuse combination apparatus is developed and designed based on international technology andnational power supply requirement,it passed all type tests and trial-operation inspections.The apparatus conforms to IEC420:AC LOAD BREAK SWITCH ANDFUSE COMBINATION APPARATUS(1990 EDITION)and GB3804:3-63KV AC HV LOAD BREAK SWITCH VOLUME AND LIGHT WEIGHT.Compared tointernational product it keeps up with technical level with small volume and light weight.It is applicable in ring main unit and prefabricated substations as well as12kv line and power distribution system.The product realizes three working positions:power making.power breaking and earth.It applies to power system ofrated voltage 6-12kv,50/60HZ breaking load current ober load current and short-circuit current.
Ambient condition
1.The altitude:under 1000M。
2.The ambient temperature:-25℃-+40℃。
3.The relative humidity of air:monthly≤90%,daily≤95%。
4.Ampitude:Earthquake degree 8。
5.Application occasions should free from fire,inflammables,explosives.corrosives and severe vibration。
Model implication
Technical specification
| 额定电流KV Rated voltage Ky | 一分钟工频耐压KV 1min frequency voltage KV | 额定电流A Rated Current A | 4秒热稳定电流A 4S thermal current A | 动稳定电流(峰值)KA Dynamic current (peak)KA | 额定开断电流A Rated breaking current A | 短路关合电流KA Short circuit close currentKA |
| 12 | 42 | 400 | 12.5 | 31.5 | 400 | 31.5 |
| 48 | 630 | 20 | 50 | 630 | 50 |
Overall dimension
Fuse ratings
| 型号Model | 额定电压KV Rated voltage(KV) | 额定电流A Rated current(A) | 熔体的额定电流A Fondant rated current (A) |
| SDLA*J | 12 | 50 | 6.3,1016,20,25 31,5,40, |
| SFLA*J | 12 | 100 | 50.63,71,80, 100 |
| SKLA*J | 12 | 125 | 125 |
