252kV Gas Insulated Switchgear
ZF28-252 Gas Insulated Switchgear is a three-phase AC high-voltage electrical equipment, which is designed for controlling, measuring, protecting, and switching power transmission lines, and can be combined into the required main wiring arrangement according to user requirements.
Compact structure
High reliability
High safety
High modularity
IEC
Features
-
01
Compact structure
The main busbar is three-phase in a common enclosure, allowing for convenient engineering arrangement, enabling the three-phase integrated transportation of the whole bay, and facilitating easy and reliable on-site installation.
-
02
High reliability
It adopts a double-channel sealing structure, ensuring an annual gas leakage rate of less than 0.1%. With excellent insulation performance, it exhibits a whole bay partial discharge of less than 3pC. It also features a three-station isolation earthing switch structure, which includes mechanical interlock between the isolation and earthing mechanisms for effectively avoiding misoperation.
-
03
High safety
The circuit breaker is arranged horizontally, with a low center of gravity and small impact on the ground during switch opening and closing, and equipped with a fully spring operation mechanism, which can realize three-phase mechanical linkage.
-
04
High modularity
The product boasts a highly modular design. The connecting flanges are of standardized dimensions, allowing for flexible configuration according to requirements, and the modules are highly interchangeable, facilitating expansion and the optimization of substation layout.
Technical Specifications
Download
-
Rated voltage
252 kV
-
Rated frequency
up to 5000 A
-
Rated short-duration power-frequency withstand voltage（1 min，effective value）Phase to phase,phase to ground
460 kV
-
Rated short-duration power-frequency withstand voltage（1 min，effective value）Across isolating distance
460+154 kV
-
Rated lightning impulse withstand voltage（peak value）Phase to phase,phase to ground
1050 kV
-
Rated lightning impulse withstand voltage（peak value）Across isolating distance
1050+206 kV
-
Rated short-time withstand current
up to 63 kA
-
Rated duration of short-circuit
3 s
-
Rated peak withstand current
up to 171 kA
Tel : +021-61610502
Start your consulting journey just one step away