Metal Enclosed Switchgear

When selecting electrical distribution equipment, reliability, safety, and serviceability are paramount. Our Metal Enclosed Switchgear is engineered to meet these critical demands in medium-voltage applications. Designed for superior protection and operational flexibility, this robust assembly houses key components like circuit breakers, busbars, and instrumentation within a grounded metal enclosure. This design effectively contains arcs and prevents accidental contact with live parts, ensuring personnel safety and system integrity. For installations requiring enhanced maintenance capabilities, our Armored Removable Switchgear offers a distinct advantage. Its modular, truck-mounted breaker design allows for swift isolation and removal without de-energizing the entire busbar, significantly reducing downtime during testing or servicing. Furthermore, our KYN28 Switchgear represents a specific, high-performance category within metal-enclosed designs. It adheres to stringent international standards, featuring advanced interlocking systems, vacuum circuit breaker technology, and a compact, space-saving footprint ideal for utility, industrial, and commercial power distribution networks.

The core Metal Enclosed Switchgear unit is a comprehensive solution built for durability and precise control. Its architecture typically follows a compartmentalized layout, segregating the high-voltage busbar, circuit breaker, cable termination, and low-voltage control sections. This segregation enhances safety by limiting fault propagation and simplifies maintenance procedures. The enclosure itself is constructed from high-quality, corrosion-resistant steel, often with a powder-coated finish for added longevity in diverse environmental conditions. Standard features include secure mechanical interlocks to prevent incorrect operation, viewing windows for safe visual inspection, and pressure-relief vents designed to safely channel internal arc gases away from personnel. The integration of modern microprocessor-based relays provides comprehensive protection, monitoring, and communication capabilities, allowing for seamless integration into smart grid and SCADA systems.

Key Specifications & Parameters

• Rated Voltage: Up to 17.5 kV / 24 kV / 36 kV
• Rated Frequency: 50 Hz / 60 Hz
• Rated Normal Current: 630A, 1250A, 2000A, 2500A, 3150A
• Rated Short-Time Withstand Current (3s): 25 kA, 31.5 kA, 40 kA
• Rated Peak Withstand Current: 63 kA, 80 kA, 100 kA
• Main Busbar Material: Electrolytic copper or aluminum, with tin or silver plating
• Insulation Medium: Vacuum / SF6 (for circuit breakers)
• Degree of Protection: Up to IP4X for compartment, IP2X for accessible parts
• Internal Arc Classification (IAC): Available as per IEC 62271-200
• Standards Compliance: IEC 62271-200, ANSI C37.20.2, IEEE C37.20.2

Typical Configuration Options