HJ-CSS Series Compact Secondary Substation
Up to 40.5kV / 2500kVA / Plug & Play
The HJ-CSS Series Compact Secondary Substation (European Type) is a highly integrated, factory-assembled turnkey solution. It seamlessly combines medium voltage switchgear, a distribution transformer, and low voltage distribution panels into a single, highly durable modular enclosure, significantly reducing on-site civil works and deployment time.
Ideal for Space-Constrained & High-Demand Scenarios:
- ✓ Urban Public Distribution & Residential Complexes
- ✓ Industrial Parks & Temporary Construction Sites
- ✓ Renewable Energy (Solar/Wind) Grid Integration
- ✓ Highways, Railways, and Infrastructure Projects
1. Highly Integrated & Compact Layout
Available in flexible internal configurations, including Linear ("I" shape) or Triangle ("T" shape) layouts, the HJ-CSS drastically minimizes the overall footprint. It provides a complete transformer and distribution system in a fraction of the space required by traditional brick-and-mortar substations.
2. Superior Enclosure & Environmental Resilience
The rugged double-layer enclosure features advanced thermal insulation and a labyrinth-style ventilation design to prevent internal condensation. Treated with premium anti-corrosion coatings, it withstands intense UV radiation, heavy rain, and corrosive environments, making it ideal for extreme outdoor conditions.
3. Uncompromised Safety & Smart Interlocks
Safety is engineered into every compartment. The medium voltage section is equipped with comprehensive mechanical and electrical "5-Prevention" interlocks. Independent compartments ensure that any operational fault is localized, providing maximum safety for maintenance personnel and the public.
4. Plug-and-Play Factory Pre-Assembly
Designed for rapid EPC deployment, the entire substation is fully assembled, wired, and tested at our facility. This plug-and-play architecture drastically reduces on-site installation time, labor costs, and overall project CAPEX, accelerating your time-to-grid.
Global Factory Acceptance & Turnkey Support
Every HJ-CSS unit undergoes rigorous routine testing aligned with strict IEC standards before dispatch. We proudly support Remote Video FAT (Factory Acceptance Test) for our global EPC clients, ensuring total transparency.
To support diverse project logistics, this series is available as a CBU (Completely Built Unit), ready to be lifted and energized immediately upon arrival at the site.
Technical Specifications
(Note: Parameters cover standard configurations based on the YB series. Custom capacities and voltage ratings are available for specific EPC requirements.)
| System & Power Parameters | |
| Transformer Capacity | 50kVA - 2500kVA (Custom larger capacities available via E-House) |
|---|---|
| Rated Voltage (MV Side) | 12kV / 24kV / 35kV (Up to 40.5kV) |
| Rated Voltage (LV Side) | 0.4kV / 0.69kV |
| Rated Current (MV Side) | Up to 630A (Load Switch) / 125A (Fuse) / 1250A (VCB) |
| Rated Current (LV Side) | 100A - 3150A |
| Withstand & Protection Ratings | |
| Short-Time Withstand Current (MV) | 20kA (Standard) (Custom higher withstand available) |
| Short-Circuit Breaking Current (LV) | 15kA - 80kA |
| Rated Frequency | 50 Hz / 60 Hz |
| Transformer Type Options | Hermetically Sealed Oil-Immersed / Cast Resin Dry-Type |
| Enclosure Protection Degree | Standard IP3X (Transformer Compartment IP2X) (Customizable up to IP54 for extreme environments) |
Operating Environment
- Ambient Temperature: -25°C to +40°C.
- Altitude: Standard ≤ 1000m (High-altitude custom designs up to 4000m+ available).
- Installation Site: Outdoor areas free from severe vibration, explosive dust, or severe chemical corrosion.
- Wind Speed: Withstands outdoor wind pressure up to 34m/s (approx. 700Pa).
Related products
HJ-EHouse Series Prefabricated Modular Substation
Up to 40.5kV / Fully Customizable / Turnkey Solution
The HJ-EHouse Series Prefabricated Modular Substation is a highly engineered, walk-in "Electrical House." It is custom-designed to integrate medium voltage switchgear, low voltage MCC panels, transformers, HVAC, and smart control systems into a single, ruggedized transportable module. It serves as a plug-and-play nerve center for complex and remote power projects. Ideal for Harsh Environments & Heavy Industries:- ✓ Mining, Metallurgy & Oil/Gas Facilities
- ✓ Large-Scale Renewable Energy (Solar/Wind Step-up Stations)
- ✓ Data Centers (IDC) & Telecom Hubs
- ✓ Remote Infrastructure & Mobile Power Solutions
HJ-PMS Series Pad-Mounted Substation
Up to 34.5kV / 4000kVA / Dead-Front Design
The HJ-PMS Series Pad-Mounted Substation (American Type) is an ultra-compact, fully insulated, and tamper-resistant distribution center. It seamlessly integrates a highly efficient oil-immersed transformer, medium-voltage load switch, and low-voltage distribution into a single sealed tank. Designed for public safety and rapid installation, it is the preferred choice for modern underground distribution networks. Ideal for Public Spaces & Renewables:- ✓ Residential Communities & Commercial Centers
- ✓ Renewable Energy (Solar Parks & Wind Farms)
- ✓ Street Lighting & Urban Underground Grid Upgrades
- ✓ Mining Facilities & Oil Field Power Distribution