Project Name

Substation and Power Distribution Project of the Training Building in Xiangsihu New Campus of Nanning College for Vocational Technology

Product Applied

1 Set of Outdoor Switch Box + 2 Sets of Box-Type Substations

Project Background

The construction project of the Integration of Production and Education Comprehensive Training Building in Xiangsihu New Campus of Nanning College for Vocational Technology requires the construction of supporting 10kV power distribution facilities. The core requirements of the project are as follows:

Urgent construction period: The contract stipulates that the installation of high-voltage equipment and cable testing shall be completed within 15 days (based on the project information "construction period of half a month");

Equipment configuration: 2 sets of ZBW-12 intelligent box-type substations + 1 set of outdoor switch box shall be adopted (based on the product application description);

Environmental conditions: Nanning is located in a subtropical climate zone, with a daily average humidity ≤ 95%.

Customer Pain Points

Extremely short construction period: The construction period of conventional substations takes 1-2 months, but the teaching schedule requires delivery within 15 days;

Space constraints: Equipment is placed outdoors, requiring outdoor compact equipment;

Environmental challenges: The high-humidity environment is prone to causing condensation and reduced insulation of electrical equipment (based on the humidity conditions in the instruction manual).

Solution Proposition

Equipment Selection

Three-in-one design: Integrates high-voltage cabinets (optional vacuum circuit breakers), transformers (S11-type oil-immersed), and low-voltage cabinets (intelligent circuit breakers), reducing on-site assembly links;

Environmental adaptability:

▶ Honeycomb double-layer composite shell (cold-rolled steel base material) with protection class IP54 (based on the "high protection level" and structural description in the instruction manual);

▶ The high-voltage compartment is equipped with temperature and humidity sensors (based on the function expansion capability of "configurable distribution network automation terminal" in the instruction manual);

Expansion compatibility: Reserved slot for distribution network automation terminal (FTU) to support future upgrades.

Delivery Process Optimization

Factory pre-installation and commissioning: Internal wiring of the box-type substation is completed before delivery, reducing on-site working hours;

Parallel construction: Equipment foundation construction and cable laying proceed simultaneously, using YJV22-8.7/15kV armored cables.

Customer Value

Commissioning on schedule:

The actual construction period was completed ahead of schedule, ensuring the commissioning plan of the training building.

Long-term reliability:

The composite shell structure of the box-type substation isolates moisture, with no condensation fault reports after commissioning;

The low-voltage intelligent circuit breaker enables rapid fault isolation.

Flexible expansion:

The modular structure supports transformer capacity expansion without the need to rebuild the foundation.