| Customization: | Available |
|---|---|
| Transport Package: | Fumigation Wooden Box |
| Trademark: | YQALT |
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FN16A Series Indoor Load Break Switch
Product Overview:
The FN16A Series Indoor Load Break Switch is widely adopted in medium-voltage (MV) installations due to its superior interrupting capabilities and its ability to withstand short-circuit currents, which are typically caused by faults in distribution networks. The FN16A series, particularly when combined with High Rupturing Capacity (HRC) fuses, is highly effective for protecting distribution transformers up to 1250 kVA.
Application Environment:
The FN16A series is designed for installation in compartmentalized switchboards, which are commonly used in medium-voltage power distribution systems. These switches are ideal for environments where reliable segregation between different compartments is required, such as in utility substations, industrial plants, and large commercial facilities.
Operating Conditions:
1. Voltage Range: Suitable for medium-voltage systems with operational voltage levels up to 12kV.
2. Temperature Range: Operates effectively within a temperature range of -5°C to +40°C.
3. Altitude: Suitable for installation at altitudes up to 1000 meters above sea level.
4. Humidity: Designed to function in environments with relative humidity levels up to 90%.
5. Pollution Level: Appropriate for use in pollution level II environments.
Usage Considerations:
1. Full Segregation: The FN16A series provides full segregation between the busbar compartment and the cable compartment, ensuring safety in both the "closed" and "open" positions of the switch disconnector.
2. Maintenance Accessibility: The moving contact, which is of the sliding vertical type, can be easily inspected and cleaned even when the bus-bars are live, and the earthing switch (ES) is closed, ensuring ease of maintenance and reduced downtime.
3. No Adjustment Needed: The tripping mechanism for the switch fuse combination and the ES is pre-adjusted and checked during the manufacturing process, requiring no further adjustment on-site. This enhances the reliability and safety of the system.
4. Transformer Protection: When equipped with HRC fuses, the FN16A series provides robust protection for distribution transformers, especially those up to 1250 kVA, making it an ideal choice for critical power distribution systems.
Key Features:
• Superior Interrupting Capability: Designed to handle short-circuit currents effectively, protecting the network from potential faults.
• Integrated Design: The switch fuse combination and ES are built as a single unit, providing a compact and efficient solution for MV installations.
• User-Friendly Maintenance: The design allows for easy inspection and maintenance, reducing operational costs and enhancing system reliability.
• Versatile Application: Suitable for a wide range of MV installations, including utility, industrial, and commercial power distribution networks.
| Technical Specification | ||||
| Rated voltage | kV | 12 | 24 | 36 |
| Rated current | A | 630 | 630 | 630 |
| Rated power frequency | Hz | 50/60 | 50/60 | 50/60 |
| Short circuit making capacity | kA Peak. | 67 | 50 | 50 |
| Peak withstand current | kA Peak. | 82 | 82 | 66 |
| Short time current | kA eff. | |||
| 1Sec. | 31.5 | 31.5 | ||
| 2Sec. | 25 | 25 | 25 | |
| 3Sec. | 20 | 16 | ||
| Max. breaking capacity in co-operation with fuses IEC 62271-105 IEC 420 1990-11) |
A | 1600 | 900 | 300 |
| Max. fuse current(XRNT Fuse) | A | 125 | 80 | 40 |
| Power frequency withstand voltage 50Hz 1 min,: | ||||
| To earth and between poles | kV | 42 | 55 | 95 |
| Across isolating distance | kV | 45 | 70 | 120 |
| Impulse withstand voltage 1.2/50μs: | ||||
| To earth and between poles | kV | 75 | 125 | 190 |
| Across isolating distance | kV | 85 | 145 | 220 |
| Mechanism Endurance | cycles | 20000 | 2000 | 2000 |
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