2. Applications
Suitable for critical facilities with large power distribution capacities and stringent requirements for safety and stability—such as data centers, power plants, petrochemical facilities, metallurgical plants, rail transit systems, and large-scale high-end buildings.
3. Models
The MNS Modular Low-Voltage Draw-out Switchgear is based on globally recognized design standards, offering exceptional compatibility and scalability.
Modular Structure: Features a standardized design for drawer units, enabling flexible configuration and rapid capacity expansion.
Draw-out Design: Supports live-circuit maintenance without disrupting overall system operation, thereby significantly enhancing operation and maintenance efficiency.
4. Product Features and Functions
Modular Draw-out Structure: The drawer units feature a standardized, modular design that allows for flexible configuration based on load requirements, facilitating convenient capacity expansion and retrofitting.
Superior Breaking and Thermal Stability Performance: Boasts a rated short-circuit breaking current of up to 65kA and a short-time withstand current of 65kA, enabling it to withstand system short-circuit impacts while ensuring stable and reliable operation.
Comprehensive Protection and Monitoring Capabilities: Integrates protection functions against overload, short circuits, ground faults, overvoltage, and undervoltage; supports the monitoring of key parameters—such as current, voltage, and temperature—and is fully compatible with intelligent power distribution systems.
Flexible Scenario Adaptability: Supports various cable entry and exit methods (top-in/bottom-in, top-out/bottom-out) to accommodate diverse civil engineering conditions and power distribution scales.
High-Security Interlock Design: Equipped with multiple mechanical and electrical interlocking devices to prevent operational errors and ensure the safety of both personnel and equipment.
Live Maintenance for High O&M Efficiency: Drawer units can be individually withdrawn for maintenance without the need to de-energize the entire busbar section, thereby significantly reducing power outage duration and maintenance costs.
6. Referenced Standards
GB 7251.1 《Low-voltage switchgear and controlgear — Part 1: General rules》
IEC 60439 《Low-voltage switchgear and controlgear》
ABB Standard — Design Specification for Modular Low-voltage Draw-out Switchgear
GB 14048.1 《Low-voltage switchgear and controlgear — Part 1: General rules》
GB 14048.2 《Low-voltage switchgear and controlgear — Circuit-breakers》
