Pad Mount Substation
We design and manufacture medium and low voltage power pad mount substation — from prefabricated substations and modular transformers to cable junction boxes and dedicated step-up transformers for wind and solar power — covering 30 kVA to 2,500 kVA across voltage levels up to 35 kV, with full customization in voltage, capacity, and enclosure protection.
Backed by 30+ years of experience, 18+ international certifications, and a track record of 2,400+ projects across 80+ countries, our pad mount substation is trusted for safe, reliable, and maintenance-free operation in urban infrastructure, industrial facilities, and renewable energy installations worldwide.
Power Distribution Solutions
Type: Transformer, Substation and Distribution
Application: Indoor, Outdoor, Underground
Configuration: Fully Customization
Access Top Quality Pad Mount Substation Solutions to Elevate Your Power Projects
Reliable Pad Mount Substation For Sale
YBW Series Prefabricated Substation
For tight spaces and quick installs, Unicore YBW series fabricated substation is the perfect fit. It brings high-voltage equipment, transformer, and low-voltage components together — taking up just 1/10 of the footprint of a conventional substation, without compromising on performance or reliability.
Compact & Portable
Low Noise & Energy-Efficient
Ring-Network Compatible
Fast Deployment
Easy Maintenance
ZGS Series Modular Transformer
For residential communities, commercial venues, and industrial sites that demand consistent, trouble-free power, the ZGS keeps things simple. Everything is sealed in one oil-insulated tank — no separate components, no routine maintenance, just reliable distribution day after day.
Fully Sealed Oil-Insulated
Low Loss & Low Noise
High Short-Circuit Withstand
Maintenance-Free
Residential & Industrial Use
DFW Series Modular Transformer
Whether installed indoors, outdoors, or underground, the DFW makes cable network connections fast and secure. With three configuration options and prefabricated connectors, it adapts to virtually any site requirement — fully sealed, fully waterproof, and built to last.
3 Configuration Options
Fully Sealed & Waterproof
Indoor/ Outdoor/ Underground
Maintenance-Free
Wide Connector Range
ZGS13 Series Step-Up Transformer
Built for the real demands of wind and solar farms, the ZGS13 handles the critical first stage of power transmission — stepping up generator output from 270V–1,140V to 10kV or 35kV for grid delivery. Compact, fast to install, and designed to perform reliably in tough outdoor conditions.
Input: 270V-1,140V
Output: 10kV or 35kV
Wind & Solar Dedicated
Compact & Quick Install
Maintenance-Free
YBH Series Chinese-Style Compact Substation
The YBH series pad mount substation takes what works best from both American and European substation designs. With a proprietary high-voltage connection and proven performance across wind and solar projects at 10kV and 35kV, it sets a high-level standard for safety, reliability, and ease of use.
Voltage: 10kV & 35kV
Proprietary HV Connection
Wind & Solar Compatible
Safe & Eco-Friendly
Low Maintenance
Low-Voltage Integrated Distribution Box
Designed to meet State Grid standards, the JP series brings everything a low-voltage distribution point needs into one compact outdoor enclosure. From metering and protection to reactive power compensation and automatic reclosing — it handles it all, making grid upgrades simpler and more cost-effective.
Rated: 0.4kV and Below
Multi-Function Integrated
Anti-Theft & High Protection
State Grid Compliant
Easy Installation
YBW Series Sample Specifications — Full Data for All Series Available Upon Request
Specifications
| No. | Item | Parameter |
| High voltage unit | Rated frequency (Hz) | 50 |
| Rated voltage (kV) | 7.2, 12 | |
| Rated current (A) | 400, 630 | |
| Transfer current (A) | 1200–3150 | |
| Power frequency withstand voltage (phase-ground, phase-phase / isolating distance) (kV) | 42/48 | |
| Lightning impulse withstand voltage (phase-ground, phase-phase / isolating distance) (kV) | 75/85 | |
| Rated short-circuit breaking current (current-limiting fuse) (kA) | 31.5 | |
| Rated capacity (kVA) | 30–2000 | |
| Tap range | ±2×2.5%, ±5% | |
| Transformer unit | Connecting group (%) | Yyn0, Dyn11 |
| Impedance voltage (%) | 4, 4.5 | |
| Low voltage unit | Rated voltage (V) | 220, 380 |
| Rated current of main circuit (A) | 50–4000 | |
| Branch current (A) | 5–800 | |
| Outer shell | Protection level (conventional product) | IP33D |
| Noise level (dB) | ≤ 50 |
Discover Core Advantages of Pad Mount Substation to Optimize Your Power Layout
Remarkable Advantages of Unicore Pad Mount Substation
Complete Series from One Supplier
From prefabricated substations and modular transformers to cable junction boxes and renewable step-up units, our six pad mount substation series cover every point in medium and low voltage distribution. It simplifies procurement, reduces coordination costs, and ensures consistent quality across your entire project.
Smaller Footprint Faster to Deploy
Our prefabricated substations occupy just 1/10 of the footprint of conventional builds, with manufacturing cycles cut to 1/10 and construction costs reduced by half. Less groundwork, shorter schedules, and significant savings — without compromising on performance or reliability.
No Routine Maintenance Needed
Full insulation, complete sealing, and total waterproofing come standard across every series. Once installed, your equipment runs without routine servicing. There are no scheduled inspections, no replacement parts, no unexpected downtime. It can achieve long-term stable operation from the very first day of operation.
Purpose Built for Wind and Solar
The YBH and ZGS13 series are designed specifically for renewable energy applications at 10kV and 35kV, handling generator input from 270V to 1,140V. When your project demands dedicated equipment rather than a general-purpose adaptation, our solutions are built precisely for that requirement.
Fully Customized to Your Specs
Voltage level, capacity, protection rating, and installation type are all fully customizable. Whether your site calls for indoor, outdoor, or underground installation, every unit is built to your exact specification — ensuring your distribution system performs exactly as your project demands.
Verified Performance Across Industries
Backed by 30+ years of manufacturing experience, 18+ international certifications, and successful deployments across urban infrastructure, industrial facilities, and projects in 80+ countries. When reliability is non-negotiable, our track record gives you confidence before the first cable is connected.
Trusted by Clients Across Industries and Continents
Unicore Pad Mount Subtation Global Cases
Pad Mount Subtation to Indonesia
Residential Community Power Distribution
630 kVA
Pad Mount Subtation to Malaysia
Urban Underground Cable Network
10 kV
Pad Mount Subtation to Saudi Arabia
Industrial Power Distribution Project
1,600 kVA
UNICORE ELECTRIC
Transformer Solutions
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Real Experiences from Transformer Professionals Who Trust Unicore
What Our Clients Say
Reliable Performance, YBW Series
“We used the YBW prefabricated substation for a residential development project. The installation was straightforward and the footprint was much smaller than we expected — it fit into a space where a conventional substation simply wouldn’t have worked. It’s been running without any issues since commissioning, and we haven’t needed to call anyone in for maintenance. We will specify it again on future projects.”
Ahmad
Indonesia
⭐⭐⭐⭐⭐
Simple and Dependable, DFW Series
“We specified the DFW cable junction boxes for an underground cable network project. The prefabricated connectors made on-site work much faster than we were used to, and the sealed construction gave us confidence in the waterproofing given our site conditions. Everything has held up well after more than a year in service. A solid product from a supplier that was easy to work with.”
Khalid
Saudi Arabia
⭐⭐⭐⭐⭐
Engineered for Long-Term Excellence and Operational Value
High Reliability Ensures Lower Maintenance
In power distribution, the initial purchase price is just the beginning; true value lies in long-term operational stability. Our pad-mount substations are engineered with advanced materials and precision techniques to fundamentally minimize unplanned downtime and expensive field repairs. This focus on lifecycle performance ensures continuous power delivery while significantly optimizing your total return on investment.
High Efficiency Energy Saving Design
The transformer core utilizes premium grain-oriented silicon steel combined with advanced low-loss structural design, exceeding the latest DOE and IEC efficiency standards. By drastically reducing no-load losses and heat generation, this high-efficiency configuration saves end-users tens of thousands of dollars in electricity costs over the unit’s 30-year lifespan.
Premium All-Weather Corrosion Protection
Engineered for harsh environments such as coastal salt spray or high-humidity industrial zones, our enclosures feature a dual-layer defense of hot-dip galvanizing and UV-resistant powder coating. Achieving C4 or C5-M resistance levels, this robust shielding eliminates oil leak risks caused by rust and ensures the equipment remains intact without frequent repainting.
Advanced Insulation and Safety Upgrades
We offer optional eco-friendly FR3 natural ester (vegetable oil) which provides a flash point twice as high as standard mineral oil, dramatically enhancing fire safety in populated areas. Furthermore, this fluid actively slows the chemical aging of winding insulation by wicking away moisture, potentially extending the transformer’s service life by up to 20%.
Zero-Leakage Hermetic Design
Our transformer tanks are constructed with heavy-gauge steel and precision welding, followed by rigorous pressure testing to ensure 100% hermetic integrity. By utilizing high-grade gaskets and specialized connections, we eliminate common seepage points, significantly reducing site visits and oil refills while protecting the environment from potential spills.
Maximum Investment Returns through Strategic Cost Efficiency
Investment Value and Cost Efficiency
In power infrastructure, the initial purchase price typically represents only 25% to 30% of the Total Cost of Ownership (TCO), with energy losses and maintenance making up the majority. Our solutions focus on reducing over 20% of total lifecycle expenditures through precision efficiency control, maintenance-free design, and rapid commissioning. Shifting focus from initial price to total value ensures that your infrastructure investment generates consistent economic returns and financial stability throughout its decades of operation.
Efficiency Upgrades Save Approximately 20% in Annual Losses:
Our transformers feature optimized magnetic circuits that exceed the latest DOE efficiency standards, effectively reducing both no-load and load losses. At standard industrial utility rates, this energy efficiency directly cuts thousands of dollars in annual electricity waste.
Financial Benefit: Lower annual energy costs allow you to recover any price premium early in the lifecycle, delivering permanent and measurable utility savings.
Zero-Maintenance Design Reduces O&M Budgets by 30%:
Utilizing hermetic sealing technology and high-reliability components, our equipment significantly lowers the frequency of site inspections, insulation testing, and oil refills. This reduces your financial commitment to technical labor, specialized vehicles, and spare parts inventory.
Financial Benefit: Dramatically lowers long-term operational expenditures (OpEx) while stabilizing annual budgets by eliminating expensive emergency repairs.
Plug and Play Model Cuts Field Construction Costs by Over 30%:
All assembly and commissioning are completed at the factory, shortening site timelines by 40% and reducing reliance on expensive specialized labor. This efficiency directly saves substantial costs in crane rentals, field engineering labor, and project overhead.
Financial Benefit: Faster commissioning accelerates revenue generation and improves project IRR by reducing interest during construction and site expenses.
Extended Service Life Lowers Annual Depreciation Expenses:
Our products are designed for a service life exceeding 30 years, roughly 10 years longer than standard units. This allows for a longer depreciation schedule on your financial statements, directly reducing annual fixed-asset depreciation charges.
Financial Benefit: Financial Benefit: By extending the equipment replacement cycle, you protect long-term CapEx and significantly enhance the Net Present Value (NPV) of your energy assets.
A Technical Comparison of Integrated and Traditional Transformer Systems
Integrated Pad-Mount Solutions vs. Utility Substation Transformers
During the project planning phase, understanding the boundaries between integrated solutions and traditional grid infrastructure is critical. An integrated Pad Mount Substation combines the transformer, switchgear, and protection into one tamper-resistant enclosure. In contrast, a Substation Transformer is a core component designed for larger, more complex industrial applications and higher voltage grid levels.
| Selection Features | Integrated Pad-Mount Substation | Utility Substation Transformer |
| Voltage Class | Up to 35 kV (Secondary Distribution) | 15 kV to 230 kV+ (Primary Utility) |
| Capacity Range | 10 kVA to 10 MVA | 5 MVA to 200 MVA+ |
| Initial Price Range | Approx. $3,000 – $200,000+ (Cost Effective) | $50,000 – $2,000,000+ (Capital Asset) |
| Security & Safety | Dead-front: Tamper-resistant, no fence | Live-front: Requires external security fence |
| Installation Footprint | Compact: Pad-mounted, public-friendly | Massive: Requires grid, foundation & clearance |
| Cooling Design | Ambient oil/Self-cooled (ONAN) | External radiators, fans, or forced oil |
| Connection Type | Optimized for underground cabling | Optimized for overhead lines or bus ducts |
Why the Integrated Pad-Mount Substation is Your Ideal Solution
As highlighted throughout this article, integrated pad-mount solutions are the gold standard for urban distribution, commercial buildings, and renewable energy projects. Their enclosed design allows for safe installation in high-traffic public areas without the need for additional, expensive security fencing.
- Public Safety Compliance: Tamper-proof construction makes it the standard for schools, hospitals, and residential areas.
- Renewable Energy Integration: Specifically optimized for step-up applications in solar farms and wind power systems.
- Space Efficiency: The compact footprint significantly reduces land acquisition costs.
Essential Selection for Grid Connectivity and Power Reliability
Radial and Loop Feed Configurations
During the customization of a pad-mount substation, selecting the appropriate high-voltage feed architecture is a core decision in the design stage. This choice involves the hardware configuration of internal load-break switches and directly impacts the redundancy and fault recovery capabilities of the entire distribution system.
Radial Feed System
This system connects to the grid via a single set of bushings, serving as the line’s endpoint. Think of it as a house on a “dead-end street”; electricity has only one path to enter, and there is no alternative route if that specific path is blocked or damaged.
Core Advantages:
- Cost Efficiency: Reduced initial procurement costs with fewer internal parts.
- Simple Setup: Straightforward design with minimal onsite cabling work.
- Compact Footprint: Smaller size, ideal for tight installation spaces.
Typical Applications:
- Isolated Loads: Remote agricultural irrigation pumps or standalone warehouses.
- Single Structures: Small commercial units or various non-critical industrial sites.
- Budget Focused: Projects prioritizing CapEx over secondary power redundancy.
Loop Feed System
This system features two sets of bushings and internal switches that form part of a primary ring circuit. Think of it as a house on a “ring road”; if one direction is blocked, power can be re-routed from the opposite side to maintain continuous service.
Core Advantages:
- Superior Reliability: Provides high uptime through redundant power paths.
- Operational Ease: For maintenance and repairs without shutdowns.
- Fast Restoration: Quickly re-routes electricity during cable or line faults.
Typical Applications:
- Critical Facilities: Hospitals, medical centers, and large-scale data centers.
- Modern Infrastructure: Upscale residential areas and large industrial parks.
- High-Stakes Sectors: Any site where power loss causes major financial risk.
Why Choose Unicore
Your Trusted Partner in Power Solutions
We build equipment that works in the field and stand behind it with full technical support — from initial specification through to after-sales service. Every unit leaves our factory certified, documented, and ready to perform. With 18+ international certifications and 2,400+ completed projects across 80+ countries, our track record backs every claim we make.
Certified to Global Standards
Every unit is manufactured to international standards and backed by certified test results — so you know exactly what you’re getting before it arrives on site.
Supported at Every Stage
From technical specification and customization through to after-sales service, we’re with you at every step of the project.