Model: ZF8-550/Y5000-63
The ZF8-550 GIS offers a flexible, modular, and compact approach to gas-insulated switchgear. With a single-phase encapsulated structure and high seismic resistance, the ZF8-550 is suitable for both indoor and outdoor applications. Due to its flexible layout, the ZF8-550 GIS consists of a circuit breaker, disconnector, earthing switch, current transformer, voltage transformer, surge arrester, busbar, and bushings, and can be configured to meet the needs of each unique customer.
Main Features
- Single-phase enclosure design
- Dimensions: L x W x H: 5200mm x 4500mm x 3000mm
- Cell depth: 4500mm
- Horizontal circuit breaker with spring-hydromechanical drive
- Ability to interrupt fault currents with a long constant time (120ms)
- Short-circuit current rating of 63kA with a peak withstand of 171kA
- Disconnectors and earthing switches with motor drive
- Fast earthing switch (FES) with motor-spring mechanism
- Exclusive sealing technology (0.5% leakage per year)
- Integrated earthing switches
- Pre-assembled and factory-tested cells
Advantages
- Reliable and excellent interrupting capability: The ZF8-550 offers one of the best short-circuit current ratings in the industry with a maximum interrupting capability of 70kA. With special attention to reliability, the ZF8-550 features a unique interrupter design that uses a minimal number of components, ensuring high performance and reliability in GIS solutions.
- Reduced time and effort for on-site commissioning: Assembled in large assembly workshops and individually packed as fully functional units, transportation and on-site commissioning are significantly simplified.
- Built for long-term operation: The ZF8-550 offers an advanced and unique gas-insulated design, ensuring high performance and reliability. With an average annual gas leakage of less than 0.5%, XD GIS is designed for operation exceeding 30 years before requiring gas replenishment.
- Excellent interrupting properties: The circuit breaker utilizes advanced arc-quenching and mechanical energy technologies for reliable interruption of fault and load currents up to the rated short-circuit current of 63kA with a peak withstand of 171kA.
