Electric transmission and substation equipment.
72.5kV Gas Insulated Gear
Main equipment in a substation including circuit breaker, disconnector, earth switch, potential transformer, current transformer, bus and lightning arrester are built into a casing for insulation. SF6 gas, which has excellent arc extinguishing properties, is filled in to organize the electric power system to form an integrated switch device.
Characteristics of the Product
- The new IEC Standard [IEC 62271-100(2008)]was applied for the first time in Korea, ensuring excellent performance and high reliability.
- Switches are compacted by manipulating electric springs.
- The two-phase encapsulated type structure is simple to install and convenient for maintenance.
- Low noise manipulating device is applied.
|Rated voltage (kV)||72.5|
|Rated current (A)||1200 / 2000|
|Rated interrupting current (kA)||20|
|Power frequency withstand voltage (to ground/polarity)||140/160|
|Lightning impulse withstand voltage (to ground/polarity)||325/375|
|Rated short time withstand current (kA)||50|
|Rated SF6 Gas pressure
(kgf/c㎡·G at 20°C)
|Circuit breaker class||E1/C2/M2/S2|
|Manipulating method||circuit breaker||spring (two-phase encapsulated manipulation)|
|disconnector||electric (two-phase encapsulated manipulation)|
|Earthing switch||manual (two-phase encapsulated manipulation)|