※ Outline
GW□-12outdoor AC HV disconnect switch (disconnect switch for short hereunder) is used in electric power system with rated frequency 50Hz, rated voltage 12kV, is mainly for making or breaking circuit under line supplying voltage in outdoor high voltage distribution system equipment. Thereof anti-pollution type disconnect switch can effectively solve the filth flash during operation so as to meet the requirements of users in heavily polluted area.
※ Environmental Conditions
♦ Altitude: ≤1000m (above sea level);
♦ Ambient temperature: -30℃~+50℃;
♦ Wind pressure ≤ 700Pa(equal to speed 35m/s);
♦ Degree of polluted air: IV;
♦ Earthquake intensity: not exceed degree 8;
♦ The thickness of covering ice≤10mm;
♦ No fire, explosive danger, heavy pollution and chemical erosion as well as no serious vibration.
※ Main Technical Parameters
|
NO. |
Item |
Unit |
Value |
|
|
1 |
Rated voltage |
kV |
12 |
|
|
2 |
Rated current |
A |
630 |
|
|
3 |
Rated frequency |
Hz |
50 |
|
|
4 |
Rated withstand current (peak value) |
kA |
50, 63 |
|
|
5 |
Rated short time withstand current |
kA |
20, 25 |
|
|
6 |
Rated duration of short time withstand current |
S |
4 |
|
|
7 |
Main circuit resistance |
μΩ |
≤110 |
|
|
8 |
1min power frequency withstand voltage (RMS)
phase-to-phase, phase -to-earth/ across the open contacts |
dry |
kV |
42/48 |
|
9 |
wet |
34 |
||
|
10 |
Lighting impulse withstand voltage (peak) phase-to-phase, phase -to-earth/ across the open contacts |
kV |
75/85 |
|
|
11 |
Mechanical life |
Times |
2000 |
|
※ Overall Dimensions (unit: mm)
