Y5WT-42/120 porcelain-housing metal-oxide surge arrester
27.5kV porcelain housing, 5kA
Specifications
| Model | Y5WT-42/120 |
|---|---|
| Standard | GB/T 11032, AC gapless metal-oxide surge arresters, and traction power supply system technical conditions |
| Rated Voltage | 42kV (for 27.5kV systems) |
| Creepage Distance | 1600mm |
| Operating Temperature | -40℃~+70℃ |
| Altitude | <4000m |
| Materials | Metal-oxide varistor blocks, composite insulating housing |
| Installation | Installed at mast tops, substation exits and neutral sections |
Y5WT-42/120 is a gapless metal-oxide surge arrester for 27.5kV systems with porcelain housing, nominal discharge current 5kA, to standard TJ/GD033—2019, for OCS of electrified railways at 200km/h and above.
| Product type | gapless metal-oxide surge arrester for 27.5kV systems |
| Housing material | porcelain housing |
| Nominal discharge current | 5kA |
| Current withstand | 600A |
| Creepage distance | 1600mm |
| Applicable speed | 200km/hand above |
| Standard | TJ/GD033—2019 |
Performance
Operating Conditions
For lightning and switching overvoltage protection of the OCS, in long-term energized outdoor operation.
Mechanical Performance
The composite housing resists pollution and tearing with fully sealed moisture protection, and withstands lead-wire tension and wind loads.
Electrical Performance
Residual voltage at nominal discharge current and square-wave current withstand meet GB/T 11032; disconnector-equipped types detach automatically on fault.
Applications
substation exits
Y5WT-42/120 porcelain-housing metal-oxide surge arresters protect against switching overvoltage at substation feeder exits.
lightning-prone sections
Y5WT-42/120 porcelain-housing metal-oxide surge arresters discharge lightning overvoltage at mast tops in lightning-prone sections.
neutral sections
Y5WT-42/120 porcelain-housing metal-oxide surge arresters limit overvoltage magnitude on both sides of neutral sections.
elevated urban rail sections
Y5WT-42/120 porcelain-housing metal-oxide surge arresters provide lightning protection for elevated urban rail OCS.
