Outdoor Compact Prefabricated Substation Power Distribution Unit Box 11kV-35kV

Attributes Description Documentation Resource Library

Key attributes

Brand	ROCKWILL
Model NO.	Outdoor Compact Prefabricated Substation Power Distribution Unit Box 11kV-35kV
Rated voltage	24kV
Rated frequency	50/60Hz
Series	YBM

Description

This Rockwill outdoor compact prefabricated substation (box-type) is an integrated power distribution unit that combines high-voltage switchgear, a distribution transformer, and low-voltage distribution equipment within a single enclosure. The substation is divided into three independent compartments: HV switchgear room, transformer room, and LV distribution room.

Suitable for a wide range of applications, it serves as a dependable and efficient power transformation and distribution point in urban distribution networks, residential communities, commercial developments, and industrial facilities. The enclosure features a double-layer roof with an air-filled cavity for thermal insulation, and supports natural ventilation with an optional forced-air cooling system controlled by automatic temperature monitoring.

Key Features

Integrated three-compartment design：Separate HV switchgear, transformer, and LV distribution rooms for safe and convenient operation and maintenance
Flexible HV configuration：Compatible with vacuum circuit breakers or SF6 circuit breakers, supporting ring network, terminal, or dual power supply modes
Transformer options：Available with oil-immersed hermetically sealed or dry-type transformers
Customizable LV distribution：Panel or cabinet-mounted LV structure with options for power distribution, lighting control, reactive power compensation, and energy metering
Thermal management：Double-layer insulated roof, natural ventilation standard, with optional temperature-controlled forced ventilation
Durable construction ：Anti-corrosion steel frame and base with hot-galvanized treatment for outdoor installation and long service life
Optional styles： Available in European-style, American-style, or Chinese-style configurations to suit regional preferences

Technical Parameters

Parameter	Value
Form	Unitized
Rated voltage (HV)	11 / 24 / 33 / 35 kV
Low voltage	0.4 kV / 0.69 kV
Frequency	50 / 60 Hz
HV switchgear	Vacuum CB / SF6 CB
Transformer type	Oil-immersed / Dry-type
LV configuration	Panel or cabinet type
Enclosure material	Anti-corrosion steel
Enclosure protection	IP23
Standards	IEC 62271-202, IEC 60076
Certification	ISO 9001

Service Environment

Parameter	Specification
Ambient temperature	–25 °C to +40 °C
Altitude	≤ 1,000 m above sea level
Installation	Outdoor, on concrete foundation
Enclosure	Weatherproof, corrosion-resistant, suitable for public and industrial areas

Applications

Urban high-rise buildings and residential communities
Commercial complexes, hotels, and shopping centers
High-tech development zones and industrial parks
Small and medium factories, mining operations, oilfields
Temporary construction sites and infrastructure projects
Urban and rural distribution network renovation

Custom voltage ratings, switchgear types, transformer capacities, LV configurations, and enclosure designs are available on request. Contact Rockwill for application-specific design and quotation.

Solutions for Compact Substation

Rockwill Electric & Overseas Contractors: Full Lifecycle Partnership Solutions for Prefabricated Substations

1.Localized Collaboration: Rooted in Regional Needs, Co-Creating Value with You1.1 Climate-Adaptive Co-DesignTailored solutions for extreme environments: Dustproof & High-Temperature Substations: IP54-rated enclosures with intelligent temperature control systems, ideal for African sandstorm-prone areas. Modular Flood-Resistant Structures: Rapid disassembly/reassembly for Southeast Asian projects, boosting post-disaster recovery efficiency by 60%.1.2 Standards & Certification Collaboratio

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