FZW28-12 Outdoor Vacuum Load Break Switch 12kv
The FZW28-12 vacuum load switch is suitable for three-phase AC distribution systems with a rated voltage of 12KV and a rated frequency of 50Hz, used for opening and closing load currents and closing short-circuit currents.This product uses vacuum arc extinguishing and SF6 gas as the insulation medium to ground and between phases, and has good sealing performance.It is a maintenance free product..Suitable for protection and control in substations, industrial and mining enterprises, as well as urban and rural power grids, especially suitable for automated distribution networks in urban and rural power grids and places with frequently operations.
Features
Automatic interphase short-circuit fault: when the same short-circuit fault occurs in the user branch, the boundary switch immediately opens and locks after the substation circuit breaker or recloser protection trip, and the other branch users on the feeder line quickly restore power supply after the substation recloser;
Quick location of the fault point: After the protection action of the boundary switch caused by the user's branch line accident, the responsible user has a power failure, and the responsible user voluntarily submits the accident information. The power company can send personnel to the scene through the palm computer or communication module to investigate the cause of the accident;
Automatic removal of single-phase grounding fault: when single-phase grounding fault occurs on the user branch line, the boundary switch automatically opens;
The substation and other branch users on the feeder line do not feel the occurrence of faults.
This switch can achieve the following functions: quick break protection, overcurrent protection, three times reclossing, event recording, anti-surge current protection, zero sequence protection, real-time clock, reclossing acceleration, real-time status query, smart PDA control, local/remote setting, fault active reporting, GSM short message function.
Technical parameter
|
Name |
Unit |
Data |
|
Rated voltage |
KV |
12 |
|
Rated power frequency |
Hz |
50 |
|
Rated current |
KA |
630 |
|
Rated withstand current(peak) |
KA |
40 |
|
Rated short-time withstand current(4s) |
KA |
16 |
|
Rated short-circuit making current(peak) |
KA |
40 |
|
Mechanical life |
Secondary |
10000 |
|
Rated short-circuit breaking time |
Secondary |
30 |
|
Power frequency withstand voltage (1min) : |
KV |
42/48 |
|
Lighting impulse withstand voltage (peak) |
KV |
75/85 |
|
Secondary circuit 1min power frequency withstand voltage |
KV |
2 |
|
Weight |
kg |
210 |
