(H)RWW5-40.5 series outdoor high-voltage drop-out fuse cutout(hereinafter referred to as “fuse”) is the most common
short-circuit protection switch for distribution line branch and distribution transformer.
The fuse is suitable for short circuit and overload protection of transmission lines and power transformers in
the power system with AC 50Hz and a rated voltage of 35kV. Under certain conditions, a no-load overhead
line, no-load transformer, and small load current can be opened and closed.
Drop-out Fuses cutout are widely used in distribution lines and the primary side of distribution transformers as protection and
equipment switching operations. It is installed on the branch of the distribution line to reduce the scope of
power failure.
Product Advantage
1. Insulating porcelain bushing or silicone rubber composite bushing are designed with large creepage distance, with strong pollution resistance and environmental adaptability, and good insulation performance, which can meet the requirements of long-distance travel in altitude areas.
2. Welding pipe replacement is simple and convenient
3. Fast fusing, good performance and large breaking capacity
Technical Parameters
| No. |
Item |
Unit |
Technical Parameters |
| 1 |
Rated Frequency |
Hz |
50/60 |
| 2 |
Rated Voltage |
kV |
40.5 |
| 3 |
Rated Current of Fuse of the same family |
A |
100 |
200 |
| 4 |
Rated Breaking Current |
MVA |
6 |
8 |
| 5 |
Rated Short-Time Power Frequency WithstandVoltage (1-min) |
kV/min |
95/1(To Earth) |
| 118/1 (Fracture) |
| 6 |
Rated Lightning Impulse Withstand Voltage |
kV |
185(To Earth) |
| 215(Voltage) |
| 7 |
Creepage distance |
mm |
More than 1256 |
| 8 |
Mechanical Life |
Times |
300 |
| If the altitude is over 1000m,the rated insulation level should be modified as appropriate |
USAGE
USAGE: ENVIRONMENTAL CONDITION
1. Altitude: No more than 4000m
2. The ambient temperature is not higher than + 40 ºC and not lower than – 40 ºC
3. There is a clear disconnection point with the function of isolating switch, which creates a safe working
environment for the maintenance line and equipment and increases the safety of maintenancepersonnel;
4. Simple structure, high-cost performance ratio, convenient operation, and easy maintenance;
5. The product is not applicable to the following places:Places with burning or explosion hazards;Places with violent vibration or impact;Areas with conductive chemical gas and serious pollution and salt fog.
6. Strong adaptability to the outdoor environment;
7. Large climbing distance design to meet the operation requirements in high-altitude areas
Outline and Dimension
