Y5W, HY10WZ
Polymer-housed metal-oxide surge arresters for AC systems
Gapless metal-oxide surge arresters in polymer (composite) housing. Connected in parallel with line and substation equipment to protect it against lightning and switching overvoltages.
Key parameters
- System nominal voltage
- 35; 66; 110; 220 kV
- Nominal discharge current
- 5 / 10 kA
- Rated arrester voltage
- 54 … 200 kV
- Long-duration current impulse (2 ms rectangular)
- 400 / 800 A
General information
The polymer-housed (composite-housed) metal-oxide surge arrester (hereinafter — arrester) is connected in parallel with power transmission and transformer substation equipment and protects this equipment from damage by lightning and switching overvoltages.
Type designation
Y10WZ2-100/260G
| Y | Polymer-housed metal-oxide surge arrester without gaps |
| 10 | Nominal discharge current, kA |
| W | Without gaps |
| Z | Station class |
| 2 | Design serial number |
| 100 | Rated voltage of the arrester, kV |
| 260 | Lightning impulse residual voltage at nominal discharge current, kV |
| G | High-altitude version |
Service conditions
- Ambient temperature: −40 °C … +40 °C.
- Altitude: not more than 1000 m.
- System frequency: not above 62 Hz and not below 48 Hz.
- Maximum wind speed: not more than 35 m/s.
- Areas with seismic intensity below 7 degrees.
- The power-frequency voltage continuously applied to the arrester must not exceed its continuous operating voltage.
- Abnormal service conditions — on request when ordering.
Main ratings and technical parameters
| Model | Nominal system voltage, kV | Rated voltage of the arrester, kV | Continuous operating voltage, kV | Lightning impulse residual voltage at nominal discharge current, ≤ kV | DC 1 mA reference voltage, ≥ kV | 2 ms rectangular wave current withstand, A |
|---|---|---|---|---|---|---|
| Y5W-51/134 | 35 | 54 | 43.2 | 134 | 77 | 400 |
| Y5WZ-96/235 | 66 | 96 | 67.2 | 235 | 121 | 400 |
| Y10WZ-100/260 | 110 | 100 | 79.6 | 260 | 148 | 800 |
| Y10W-102/266 | 110 | 102 | 79.6 | 260 | 148 | 800 |
| Y10W-108/281 | 220 | 200 | 156 | 490 | 290 | 800 |