Product Advantages:
Complete Product Series
- LDBM-12 switchgear provides a complete product series with rated current from 630A to 5000A and short-circuit breaking current from 20kA to 50kA.
- Flexible solutions: Comprehensive primary schemes to meet various user needs.
- Excellent compatibility: Compatible with multiple specifications of vacuum or gas circuit breakers, contactors, and other functional handcars from domestic and international sources, with 100% interchangeability for handcars of the same specification.
Rigorous Quality Control System
- Committed to customer-oriented total quality management philosophy, strictly implementing the comprehensive quality management system (TQMS) of ISO 9001-2000, ISO 14001-1996, and OHSAS 18001-1999; every switchgear completes factory testing in accordance with standards such as GB 3906 and GB 1984;
- The full series of products has not only passed internal tests but also undergone arc, pollution, condensation, EMC, and vibration tests at authoritative third-party testing institutions;
- The full series of products has passed complete type tests at authoritative third-party testing institutions, meeting air clearance greater than 125mm and the 18 anti-misoperation measures of the State Grid.
Extremely High Safety
- Fully enclosed cabinet structure with complete isolation of functional units, thorough separation of high and low-voltage areas, and handcar and grounding switch operations possible only when all cabinet doors are closed, effectively ensuring operator safety;
- Provides complete mechanical interlocking functions with a simple and reliable bidirectional five-prevention interlocking device, reliably preventing misoperation to ensure personnel and equipment safety;
- IAC-level cabinet design: Cabinet structure meets 31.5kA/1s and 40kA/1s arc requirements, with independent upward pressure relief channels and three-layer filtered pressure relief devices in each compartment; the pressure relief device reliably opens during internal arc faults, effectively preventing internal arcs from escaping from the front and sides of the cabinet to harm nearby personnel.
Extremely High Reliability
- Insulation performance: Equipment adopts air insulation or composite insulation measures, meeting standard requirements for power frequency withstand voltage, lightning impulse, and partial discharge;
- Partial discharge level: Whole cabinet partial discharge value ≤50pC at 1.1Ur;
- Temperature rise control: Adopts heat-dissipating contact box and integrated static contact technology, achieving natural cooling for 3150A specifications and requiring only one fan with power less than 200W for 4000A specifications.
Excellent Convenience
- Ample cable compartment space with installation height up to 700mm or more, allowing connection of multiple cables;
- Circuit breaker handcar and grounding switch can be electrically operated, reducing operation and maintenance costs;
- Instrument compartment component mounting plate and terminal mounting plate adopt rotary structure, facilitating maintenance and installation of secondary components.
