| Customization: | Available |
|---|---|
| Transport Package: | Fumigation Wooden Box |
| Trademark: | YQALT |
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FLN48 Indoor SF6 Gas Insulated Load Break Switch (FL(R)N48 Series)
Product Overview:
The FLN48 Indoor SF6 Gas Insulated Load Break Switch and the FL(R)N48 Indoor AC High Voltage SF6 Load Break Switch with Fuse Combination are essential components in three-phase AC 50/60Hz Ring Main Units (RMU) and terminal power stations. These switches are designed for the protection and control of 12kV power systems. They efficiently handle on-load situations, including switching off load currents, closed-loop currents, no-load transformer capacities, and cable charging currents. Additionally, the fuse combination variant can interrupt any current within the rated short-circuit breaking capacity, providing robust protection for RMUs and combined transformers.
Application Environment:
The FLN48 series is primarily used in indoor power distribution systems, particularly within RMUs and terminal substations. These environments typically include urban and industrial areas where reliable and secure power distribution is critical. The switchgear is well-suited for settings that require compact and insulated switchgear solutions due to space constraints or environmental concerns.
Operating Conditions:
1. Temperature Range: The FLN48 series operates effectively in environments with temperatures ranging from -25°C to +40°C.
2. Altitude: Suitable for installations at altitudes up to 1000 meters above sea level.
3. Humidity: Designed to function in environments with relative humidity levels up to 90%.
4. Pollution Level: Applicable in areas with pollution levels up to class II.
Usage Considerations:
1. Voltage Requirements: Ensure that the voltage does not exceed the rated 12kV to prevent insulation breakdown or operational failure.
2. Load Conditions: The switches can handle the on-load switching of transformers and cables, making them ideal for distribution networks with variable loads.
3. Routine Maintenance: Regular maintenance and gas pressure checks are required to ensure the SF6 gas remains within the safe operating range. Any drop in pressure should be addressed immediately to prevent dielectric failure.
4. Operational Safety: Operators should be trained in handling SF6 gas due to its potent greenhouse properties and the need for careful gas handling to avoid leaks.
Key Features:
• High Reliability: The use of SF6 gas provides excellent arc-quenching capabilities and insulation properties, leading to high operational reliability.
• Compact Design: The indoor application and compact design allow for installation in limited spaces while maintaining high safety standards.
• Enhanced Protection: The fuse combination variant enhances protection by allowing the switch to interrupt any current up to the rated short-circuit capacity.
| Technical Specification | ||
| Rated voltage | kV | 12 |
| Rated current | A | 630 |
| Rated power frequency | Hz | 50/60 |
| Short circuit making capacity | kA Peak | 62.5 |
| Peak withstand current | kA Peak | 62.5 |
| Short time current | kA eff | |
| 1Sec. | 25 | |
| Max. breaking capacity in co-operation with fuses IEC 62271-105 1530 (IEC 420 1990-11) | A | 1530 |
| Mainly active load breaking capacity | A | 630 |
| Cable charging current | A | 630 |
| Power frequency withstand voltage 50Hz 1 min,: | ||
| To earth and between poles | kV | 42 |
| Across isolating distance | kV | 45 |
| Impulse withstand voltage 1.2/50μs: | ||
| To earth and between poles | kV | 75 |
| Across isolating distance | kV | 85 |
| Mechanism Endurance | cycles | 1000 |
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