Project Background

Nanning Municipal Surveying and Mapping Bureau needs to construct a power distribution system to supply power to its data center, precision measuring instruments, and office areas. The project requires the power distribution equipment to have high protection performance, rapid fault isolation capability, and space adaptability to cope with Nanning’s high-temperature and high-humidity environment (summer temperature reaching 38℃ and average annual humidity exceeding 80%).

Core Customer Requirements

Guarantee of continuous power supply: Prevent data loss of precision instruments caused by power outages.

Environmental adaptability: Cabinets must withstand high temperature and high humidity to avoid condensation corrosion.

Rapid fault isolation: Shorten the power outage time for maintenance.

Space optimization: Adapt to the limited layout of equipment rooms.

Solutions and Product Function Application

High-Voltage Protection Layer

Product: KYN28-12 Type Armored Withdrawable SwitchgearFunction Implementation:

Equipped with VS1 vacuum circuit breakers to meet the 12kV incoming line protection requirements;

Mechanical interlocking "five-proof" structure (compliant with GB 3906) to prevent misoperation;

Aluminum-zinc coated steel cabinet + multi-fold edge technology, with standard anti-condensation design;

Handcart-type circuit breakers support hot-swappable replacement.

Low-Voltage Distribution Layer

Product: SWGCS-type Low-Voltage Withdrawable SwitchgearFunction Implementation:Modular drawer units (400A~2500A) for partitioned control based on load types:

▶ Data center (dual-power drawers)

▶ Precision instruments (equipped with monitoring instruments)Optional harmonic mitigation cabinet (capacitor compensation included in the main circuit scheme of the instruction manual);Vertical busbar structure saves horizontal space.

Customer Value

Safety and Compliance:

High-voltage cabinets meet the "five-proof" requirements of GB 3908, and low-voltage cabinets comply with the full separation standard of GB 7251.

Environmental Adaptability:

KYN28 cabinets have passed 95% humidity verification, and SWGCS cabinets support a derating operation mechanism at temperatures above 35℃.

Convenient Operation and Maintenance:

Faulty drawer units can be replaced independently, and handcart circuit breakers can be replaced without special tools.

Flexible Expansion:

SWGCS cabinets reserve spare drawer positions to support subsequent load expansion.