The Intelligent Integrated Box-Type Substation is a sophisticated, pre-engineered power distribution hub that combines High-Voltage (HV) switchgear, a power transformer, and Low-Voltage (LV) distribution panels into a single, weather-resistant modular enclosure.
Unlike traditional substations that require extensive on-site civil work, this "Power Modular" solution is factory-assembled, wired, and tested. It is designed for the modern smart grid, featuring integrated sensing technology that allows for remote monitoring and automated load management. It is the definitive choice for rapid infrastructure deployment in urban residential areas, industrial parks, and Utility-Scale Solar/Wind farms.
Smart Grid Integration: Equipped with intelligent terminal units (RTUs) and fiber-optic communication. Monitor transformer health, oil levels, and breaker status in real-time via SCADA.
Compact Modular Architecture: Drastically reduces the installation footprint compared to open-air substations. Its "all-in-one" design is ideal for high-density urban locations or narrow industrial corridors.
Thermal Intelligence: Features an automated climate control system with sensor-driven fans and heaters to prevent condensation and maintain optimal operating temperatures in climates from -40°C to +50°C.
High-Grade Enclosure Options: Available in Aluminum-Zinc alloy, Stainless Steel, or GRC (Glass-fiber Reinforced Concrete). Our enclosures are tested for UV resistance and C4/C5-M corrosion categories.
Enhanced Operational Safety: Includes internal arc-fault protection and a comprehensive mechanical "Five-Prevention" interlocking system to ensure operator safety during manual switching.
| Feature | Detailed Specifications |
|---|---|
| Primary Voltage (HV) | 11kV / 22kV / 33kV / 35kV / 40.5kV |
| Secondary Voltage (LV) | 0.4kV / 400V / 415V / 690V |
| Rated Capacity | 315kVA to 3150kVA |
| HV Switchgear | SF6 Ring Main Unit (RMU) or Vacuum Circuit Breakers |
| Transformer Options | High-Efficiency Oil-Immersed or Cast Resin Dry-Type |
| Protection Degree | IP44 / IP54 (Outdoor Rated) |
| Communication Protocols | Modbus-RTU, IEC 60870-5-104, IEC 61850 |
| Standards Compliance | IEC 62271-202, CE, ISO9001 |
Renewable Energy Collection: Acts as the grid-connection point for solar arrays and wind turbine clusters.
Urban Grid Strengthening: Quickly adds capacity to metropolitan areas without the need for new permanent buildings.
Industrial Mining & Oil/Gas: Provides a rugged, transportable power source for remote extraction sites and refineries.
EV Charging Superstations: Manages the high-power distribution required for centralized electric vehicle charging hubs.
Plug-and-Play Commissioning: Our units arrive on-site 100% ready. Simply secure the base, connect the HV/LV cables, and the system is live, reducing site labor costs by up to 70%.
Global Component Flexibility: We can populate the substation with your preferred switchgear brands, such as ABB, Schneider, or Siemens, ensuring your local maintenance team has parts compatibility.
Environmental Aesthetics: We offer custom exterior finishes, including landscape-matching colors or textured panels, ensuring the unit blends into public parks or high-end residential zones.
Rigorous Factory Testing: Every unit undergoes a full suite of tests (insulation, temperature rise, mechanical sequence) to ensure it meets international safety benchmarks before shipping.
Q: Can this unit handle 690V output for industrial applications?
A: Yes. We frequently customize the LV side for 690V or other specific voltages required by industrial motors or specialized wind turbine converters.
Q: Is the substation protected against internal fire?
A: Every compartment is built with fire-resistant materials. For oil-immersed transformers, the unit includes an integrated oil-leakage sump to prevent environmental contamination.
Q: How do I monitor the system remotely?
A: The substation includes a smart digital gateway that supports Ethernet or GPRS communication, allowing you to access all parameters via a web interface or your existing SCADA system.

This intelligent integrated substation is a domestic American box transformer introduced by Zhonglu Electric Group. As AN important power supply UNIT IN CABLE-based distribution network, the product is a complete set of preassembled products integrating high-voltage control, protection, transformation and distribution equipment, which is widely used in urban and rural distribution networks. The high voltage load switch and high voltage fuse are placed in transformer oil. It has two structure forms: co-box or separate box with transformer body. The oil tank is fully sealed, equipped with oil temperature gauge, oil level gauge, pressure gauge, pressure relief valve, oil discharge valve and other components to monitor the operation of the transformer. The product is divided into ring network type, terminal type and power supply mode. In order to make this kind of product more suitable for the actual requirements of Chinese power grid, Zhonglu companies have introduced the plug and draw type dry fuses, the fuse of the fuse does not affect the performance of transformer oil. According to the complexity of low pressure feed out requirements, this product is divided into STANDARD type, enhanced type and integrated type three shell forms, users and design units in the selection of more flexible, more economic.

Ambient temperature: maximum +40℃ , minimum-30°C;
Altitude:≤1000m
Wind speed: About 34m/s ( ≤70OPa);
Humidity:Average daily relative humidity ≤95%,Average monthly relative humidity ≤90%
Shake-roof: Level acceleration ≤0.4m/s² ; vertical acceleration≤ 0.15m/s²;
Gradient of installation position:≤ 3°;
Installing environment: ambient air has not been obviously polluted by corrosive or flammable gas, andthere is no strong feeling of shock.
Please negotiate with the company when the purchased product is beyond above stipulated conditions.









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Product rated parameters
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Rated voltage
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10kV/0.4kV
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Rated voltage of high-voltage side
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10kV
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Max.voltage of high-voltage side
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12kV
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Rated voltage of low-voltage side
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0.4kV
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Rated frequency
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50Hz
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Thermal stability capacity of high-voltage switchgear
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20kA/2S
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Rated short-circuit breaking capacity of low-voltage main circuit switch
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35kA
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Rated short-circuit breaking capacity of low-voltage branch circuit switch
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35kA
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Transferred current of high-voltage load switch
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>1500A
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Noise leve
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<50dB
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Protective class of case
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Not lower than IP3X Not less than IP3X
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Insulation level
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Rated voltage(kV)
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10
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0.4
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Transformer
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Switch to earth and interphase
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Switch isolating
inter-fracture
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Power frequency withstand voltage(kV)
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35
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42
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48
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-2.5
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Peak impulse withstand value(kV)
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75
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75
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85
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Q1: Are you trading company or manufacturer ?
A1: We are manufacturer.
Q2: Do you have your own R&D team?
A2: Yes, we can customize products as your requirements.
Q3: How about the quality?
A3: We have the best professional engineer and strict QA and QC system.
Q4: Can we be your distributor?
A4: We are looking for distributor and agent all over the world.
Q5: How’s the package?
A5: Normally are wooden case, but also we can pack it according to your requirements.
Q6: How’s the delivery time?
A6: It depends on the quantity you need.
