Description
The ZF11-252 GIS is an innovative gas-insulated switchgear (GIS) system, thoughtfully developed to integrate major substation equipment within a compact aluminum alloy enclosure. This advanced design features essential components such as circuit breakers, disconnectors, earthing switches, current transformers, voltage transformers, and lightning arresters. The circuit breaker is equipped with a state-of-the-art nozzle that enhances arc quenching and improves insulation between contacts, ensuring optimal performance even under challenging conditions. With a focus on versatility, all compartments are standardized, allowing for customizable configurations tailored to specific consumer needs.
Main Features
- High Current Carrying Capacity: Rated at 4000A, the ZF11-252 GIS utilizes an automatic silver-coating process to ensure optimal contact performance and durability.
- Aluminum Enclosure: Crafted from high-strength aluminum alloy, it offers lightweight construction, minimal temperature rise, and exceptional corrosion resistance.
- Excellent Insulating Properties: Insulators are manufactured using advanced casting technology from Germany, undergoing rigorous testing to guarantee reliability.
- Outstanding Sealing Property: Innovative design techniques ensure effective sealing, prolonging the lifespan of the sealing device and preventing leakage.
Specifications
| Specifications | Unit | Value | |
|---|---|---|---|
| Rated voltage | kV | 252 | |
| Rated current | A | 3150/4000 | |
| Rated frequency | Hz | 50/60 | |
| Rated short-time withstand current (r.m.s) | kA | 50 | |
| Rated peak withstand current | kA | 125 | |
| 1min rated power frequency withstand voltage (r.m.s) | To earth & between pole | kV | 460 |
| Across isolating distance | kV | 530 | |
| Rated lightning impulse withstand voltage (peak) | To earth & between pole | kV | 1050 |
| Across isolating distance | kV | 1200 | |
| Rated SF6 gas pressure (20℃) | CB compartment | MPa | 0.6 |
| Others | MPa | 0.45/0.5 | |
| Rated SF6 annual leakage | % | ≤0.5 | |
Additional Information
For optimal performance and longevity, it is recommended to follow the maintenance guidelines specific to gas-insulated switchgear systems. Regular inspections and adherence to safety protocols are essential for safe operation.
