Customized Outdoor Electrical Switchgear Transformer box Substation
Overview
Widely used in urban power grid transformation,residential districts,commercial centers and other densely populated areas.
Type meaning
Features
◇Prefabricated live touchable silicone rubber cable headfully sealedfully insulated,maintenance free,reliable guarantee of personal safety;
◇Compact structure,small and beautiful appearance,stainless,steel double box,the service life of up to 20 years;
◇Under the premise of not affecting the operation of the main net work,realize regional outage maintenance and reduce the scope of power outage;
◇Can be equipped with one or more SF6 load switches.The wiring is flexible and diverse, with up to 8 loops in the branch outlet;
◇Optional arrester,short-circuit fault indicator,current limiting fuses,etc.,to meet the user’s various requirements.
The main technical parameters
| No. | Name | Parameter |
| 1 | Rated voltage | 12kV |
| 2 | Rated current | 630A |
| 3 | Frequency withstand voltage(phase)to groumdl | 42kV/min |
| 4 | Lighting impulse withstand voltage | 75kV |
| 5 | Rated breaking current | 630A |
| 6 | Rated short-circuit opening and closing current(peak) | 50kA |
| 7 | Rated short-time withstand current | 25kA/4s |
| 8 | Rated peak withstand current | 50kA |
| 9 | Rated breaking caoacitor current | 45A |
| 10 | Rated breaking inductor current | 16A |
| 11 | Full load breaking frequency | >100 |
| 12 | Switching and closing machine operation times | 2000 |
Typical wiring schme
