A customized prefabricated compact substation for solar and energy storage systems (BESS) is a factory-assembled, "plug-and-play" solution that integrates power transformation, high-voltage (HV) switchgear, and low-voltage (LV) distribution into a single enclosure. These units are specifically designed to step up voltage from solar inverters or battery systems (e.g., from 0.4kV or 0.8kV to 10kV–40.5kV) for grid interconnection.
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Key Features & Specifications
Integrated Components: Typically contains an oil-immersed or dry-type transformer, MV/HV switchgear (such as a Ring Main Unit), LV distribution panels, and auxiliary systems like UPS and communication boxes.
Environmental Protection: Designed for harsh conditions with IP54 or IP65 ratings, featuring anti-corrosion steel shells, constant temperature control, and specialized dust/sand prevention for desert or high-altitude environments.
Intelligent Monitoring: Advanced models support real-time data collection, telemetry, and remote control of circuit breakers via SCADA or microcomputer systems.
Major Benefits
Faster Deployment: Prefabricated units can reduce on-site installation time by 30% to 40% compared to traditional built-on-site substations.
Space Efficiency: Compact designs can occupy as little as one-fourth the footprint of a conventional open-air substation.
Cost Savings: Lower labor costs since majority of construction is completed in a controlled factory environment rather than by on-site specialized crews.
Common Applications
Utility-Scale Solar Farms: Stepping up power from multiple inverter strings for grid transmission.
Battery Energy Storage Systems (BESS): Managing bidirectional power flow for peak shaving and grid stabilization.
Remote/Industrial Sites: Providing stable power for mining, oil fields, and temporary construction zones
Capacity Range: Commonly 500kVA to 3150kVA, scalable for large-scale solar farms.
Rated Voltage: High Voltage (HV) 11kV - 33kV; Low Voltage (LV) 0.4kV - 0.69kV.
Transformer Type: Oil-immersed (sealed) or Dry-type.
Configuration: Typically a 3-chamber structure: Medium Voltage (MV) Room, Transformer Room, and Low Voltage (LV) + BESS/PCS Room.
Switchgear: Ring Main Unit (RMU) or SF6 gas-insulated switchgear.
Protection Level: IP54 or IP55 (water/dust proof).
Cooling Method: ONAN (Oil Natural Air Natural)
We are a leading manufacturer specializing in medium-voltage electrical solutions, with a strong focus on reliability, innovation, and quality. Based in Foshan, Guangdong, we operate across three manufacturing facilities with a total area of 120,000 square meters. We are equipped to deliver a comprehensive range of products up to 35kV, including distribution transformers, switchgear, and compact substations, with a maximum capacity of up to 10,000kVA.
Our dedicated team of 600 employees works tirelessly to ensure excellence in every product we design and produce. We take pride in our internationally recognized credentials, holding certifications from KEMA and UDEM, while our UL certification has successfully passed prototype testing—a testament to our commitment to global standards and performance reliability.
Driven by a mission to deliver safe and efficient power distribution solutions, we continue to invest in technology, process improvement, and customer satisfaction, serving clients worldwide with tailored electrical systems built to last.
Zhongpeng has established a scientific management system and advanced design and Manufacturing systems,enabling precise control over every processing point and ensuring reliable fulfillment of customer requirements.
Through the development of a digital smart factory centered on ERP,MES,CRM and SRM systems,Zhongpeng has achieved integrated management of material flow, capital flow, and information flow,with a focused commitment to digital transformation.
- 1.We have extensive experience in power grid supply.
- 2.We have Fully automatic intelligent digital production line.
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- 1.KEMA Test Report for Oil immersed Transformer and dry type transformer.
- 2.CNAS Test Report for Oil immersed Transformer and dry type transformer.
- 3.UDEM Test Report for dry type transformer.
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We are a professional manufacturer with 15 years of experience in power equipment, specializing in Transformers and Amorphous Alloy Cores, High and Low Voltage Switchgear, Substations.
We take pride in being a qualified and reliable supplier for the State Grid Corporation of China
Q2. Do you accept customized service?
Indeed, we offer professional OEM and ODM services, and welcome custom logo branding on our products. Our experienced technical and quotation teams are fully prepared to deliver customized solutions for transformers and other power equipment, precisely in accordance with your drawings and specifications.
Q3. What is your Minimum Order Quantity (MOQ)?
Our flexible MOQ is just 1 piece.
Q4. How long is your delivery lead time?
The delivery lead time is upon your product requirements and order quantity. Typically, from the date of advance payment receipt to the port of delivery (FOB), within 30 to 60 days.
Q5. How do you resolve quality issues?
Kindly provide detailed photos of the quality issues. Our adept technical and quality testing team will conduct an analysis and offer a satisfactory solution within 2 days.
Q6. What are your payment terms?
A6. We require a 30% T/T in advance and the balance 70% before shipment. We also accept Western Union and L/C.
Q7. How do you provide technical support if the product malfunctions?
We offer comprehensive after-sales support:
Remote Guidance: Technical assistance via phone, email, or video conferencing.
On-site Service: Engineers can be dispatched to resolve issues at your location if required (additional fees apply).
Spare Parts Support: We guarantee long-term, stable supply of spare parts.
