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>> Product Introduction
The ZGSL-Z-3150-25-0.415 is a high-performance pad-mounted transformer designed with 25kV primary voltage and 415V secondary voltage, featuring a rated capacity of 3150kVA. This transformer offers outstanding characteristics:
✔Fully sealed corrosion-resistant steel enclosure with IP55 protection rating, suitable for various harsh outdoor environments;
✔Equipped with high-efficiency cooling system, ensuring temperature rise below 65K at full load operation;
✔Low-loss design with no-load loss ≤3.2kW and load loss ≤23.5kW;
✔Passed rigorous type tests including lightning impulse and short-circuit withstand tests;
✔Optional intelligent monitoring system for real-time operation status tracking.
This product is widely used in medium-voltage distribution systems for industrial parks and commercial centers, providing safe and reliable power conversion solutions. We offer customized services to meet specific technical requirements including special voltage ratios and protection levels.
Product Advantage
1.Unmatched Energy Efficiency (99.16% Verified)
As a premier transformer manufacturer, we proudly introduce our flagship ZGSL-Z-3150-25-0.415 pad mounted transformer - engineered for heavy-duty power distribution with exceptional reliability and efficiency.Our electrical transformer achieves industry-leading 99.16% efficiency at full load (3150kVA), with ultra-low losses (3.2kW no-load/23.5kW load). Independent tests confirm 30% better performance than standard units, delivering substantial energy savings for industrial users.
2.Reliability and durability
Constructed to withstand harsh environmental conditions, pad mounted transformers boast a robust design, contributing to their long service life. They resist weather elements, vandalism, and wildlife interference, ensuring consistent and reliable power distribution over time.
3.Ease of installation and maintenance
The ground-level placement of pad mounted transformers simplifies the installation process, requiring only a concrete pad and electrical connections. This accessibility also makes routine maintenance and inspections more straightforward, reducing operational costs and less downtime.
4.Enhanced security
The lockable enclosures of pad mounted transformers provide an additional layer of security, protecting against unauthorized access and tampering. This is particularly important in areas susceptible to vandalism or where public safety is a concern.
>> Technical Parameters
| Type | Pad mounted transformer |
| Model | ZGSL-Z-3150/25-0.415 |
| Installation | Outdoor |
| Altitude | ≤1000m |
| Rated Power | 3150KVA |
| Cooling Method | ONAN |
| Primary Voltage | 25kV |
| Secondary Voltage | 415Y/240V |
| Rated Frequence | 60HZ |
| Insulation oil | Mineral oil |
| Tapping Range | +2×2.5% |
| Temperature rise℃) | 65 |
| Connection Group | Dyn1 |
| Impendace% | 6 |
| Standard | IEEE C57.12.00 IEEE C57.12.90 |
| Dimensions(mm) | 1200*1000*2000 |
| Total weight(kg) | 7500 |
>> Product Uses
Pad-mounted transformers are ground-level, enclosed electrical transformers commonly used in urban and suburban power distribution systems. Their key applications include:
1. Underground Power Distribution Networks
Widely deployed in areas with underground cables (e.g., residential neighborhoods, commercial districts) to step down medium voltage (e.g., 15–35 kV) to low voltage (120/240V or 480V) for end users.
2. Commercial & Industrial Facilities
Provide localized power transformation for shopping malls, office buildings, factories, and data centers where aesthetics, safety, and space efficiency are priorities.
3. Residential Subdivisions
Serve as distribution nodes in housing developments, ensuring safe and reliable power delivery while minimizing visual and noise impact.
4. Renewable Energy Integration
Used in solar/wind farms to step up or down voltage before feeding into the grid or supplying nearby communities.
5. Public Infrastructure
Support hospitals, schools, airports, and street lighting systems by integrating seamlessly into urban landscapes.
6. Temporary Power Supply
Deployed for construction sites or emergency power restoration due to their modularity and quick installation.
>> Product Operate Guide
Generic installation and use instructions for pad mounted transformer containing the following sections:
1. Shipment,handling, rigging & storage
2. Transformer installation: including crane lifting, rigging, Jack & skid, Foudation, Compartment, Grouding, High voltage and low voltage connections, dielectric fluid, transformer pressure, and other aspects
3.Pre-energization
4.Post-energization
5.Switching operation
6.Protection
7.Accessories
8.Maintance
9.Field acceptance test guidelines
10.Tables and procedures
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