LBS-24/630 Outdoor SF6 Load Break Switch
Minrong Electric
Product Overview
The LBS-24/630 Outdoor SF6 Load Break Switch is a 24kV, 630A medium-voltage switching device designed for outdoor power distribution networks. It is used for normal load switching, feeder sectionalizing and electrical isolation in overhead distribution systems.
The switch uses SF6 gas for insulation and arc extinction, with an enclosed switching chamber suitable for outdoor installation. Its compact structure is suitable for pole-mounted substations, overhead feeders and industrial distribution systems.
Depending on the project configuration, the LBS-24/630 can be equipped with manual or motorized operation and integrated with distribution automation equipment for local or remote switching.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | LBS-24/630 |
| Product Type | Outdoor SF6 Load Break Switch |
| Rated Voltage | 24 kV |
| Rated Current | 630 A |
| Rated Frequency | 50 / 60 Hz |
| Insulation & Arc-Extinguishing Medium | SF6 Gas |
| Power-Frequency Withstand Voltage | 50 kV / 1 min |
| Lightning Impulse Withstand Voltage | 125 kV |
| Short-Time Withstand Current | 20 kA / 1 s |
| Peak Withstand / Making Current | 50 kA peak |
| Operating Mode | Manual / Motorized, according to configuration |
| Installation | Outdoor, Pole-Mounted or Structure-Mounted |
Final electrical and mechanical ratings should be confirmed against the approved product configuration and project specification.
Applications
Overhead Feeders
Load switching and sectionalizing of 24kV overhead distribution lines.
Pole-Mounted Substations
Transformer branch switching and isolation in outdoor distribution networks.
Feeder Sectionalizing
Provides a controlled switching point for feeder isolation and network operation.
Industrial Distribution
Suitable for outdoor industrial distribution systems requiring 24kV load switching.
Key Features
24kV / 630A
Designed for 24kV medium-voltage distribution systems with a 630A rated current.
SF6 Insulation
Uses SF6 gas for insulation and arc extinction inside the enclosed switching chamber.
Outdoor Construction
Suitable for pole-mounted and other outdoor medium-voltage distribution installations.
Load Switching
Designed for making and breaking specified load currents during normal operation.
Manual or Motorized
Operating mechanism can be selected according to local or automated switching requirements.
Distribution Automation
Motorized versions can be integrated with suitable FTU, RTU and remote-control systems.
SF6 Switching Technology
The LBS-24/630 uses SF6 gas inside the enclosed switching chamber as both the insulation and arc-extinguishing medium. When the contacts open, the switching process controls the electrical arc within the gas chamber.
The enclosed design keeps the main switching components protected from direct exposure to outdoor dust, rain and other environmental conditions, making it suitable for overhead distribution applications.
Operation & Protection
The LBS-24/630 is designed primarily for load switching and feeder sectionalizing. It should not be treated as a direct replacement for a circuit breaker where full automatic short-circuit interruption is required.
The switch can be coordinated with circuit breakers, reclosers, fuses or other protection devices according to the distribution network's protection scheme.
For automated systems, a motorized operating mechanism can provide local electric or remote switching when combined with suitable control equipment.
Installation & Maintenance
The LBS-24/630 is intended for installation on a suitable pole or supporting structure. Installation should consider phase spacing, conductor connections, grounding, operating access and mechanical support.
Before commissioning, check the primary connections, grounding system, operating mechanism and control circuit. The SF6 gas system should also be inspected according to the manufacturer's specified procedures.
Periodic inspection should cover the external insulation, terminals, operating mechanism, enclosure condition and possible gas leakage.
Standards & Compliance
Medium-voltage AC load break switches for indoor and outdoor applications are covered by IEC 62271-103, which applies to AC switches and switch-disconnectors with rated voltages above 1kV up to and including 52kV. :contentReference[oaicite:1]{index=1}
The exact type-test requirements, switching class, insulation level and certification should be confirmed according to the final LBS-24/630 configuration and destination market.
