Key Selling Points of Three-Phase American-Style Pad-Type
Transformers
1. Compact Structure, High Integration, and Space-Saving
"One-Pack Design": High-voltage load switches, backup fuses,
plug-in fuses, the transformer, and the low-voltage distribution
system are all integrated into a single, sealed oil tank.
Small Footprint: Due to its highly integrated design, it is
significantly smaller than traditional civil substations or
European-style box-type transformers, making it ideal for
land-constrained areas such as cities and residential areas.
Aesthetic Appearance: Typically resembling a large green mailbox,
it blends seamlessly into its surroundings, minimizing its impact
on the cityscape.
2. Fully Sealed, Fully Insulated, and Safe and Reliable
High Protection Rating (IP67 and above): All live parts are
immersed in insulating oil, shielded from air, preventing short
circuits and ground faults caused by moisture, contamination, and
foreign objects.
Maintenance-Free: The fully sealed structure virtually eliminates
external maintenance (such as cleaning insulators and preventing
condensation), and the high-voltage components require no
maintenance.
Operational Safety: External parts accessible to personnel are
insulated, greatly improving operational safety.
3. Highly Reliable Power Supply
Powerful Protection Functions:
Plug-in fuses: Protect against transformer faults (such as
inter-turn short circuits).
Backup fuses: Isolate short-circuit faults on the high-voltage
side.
Load switch: Enables on-load opening and closing, enabling
switching operations in the distribution network.
Ring network power supply capability: The high-voltage side
typically utilizes a two-port (incoming and feeder) or four-port
(ring network unit) design, making it easy to configure a ring
network power supply system and improving power supply reliability.
4. Economical and Low Overall Cost
Low Initial Investment: Compared to building a distribution room or
using other types of box-type transformers, the procurement and
installation costs of the US transformer are lower.
Easy Installation and Short Installation: It comes complete when
shipped from the factory. Only foundation construction, hoisting,
wiring, and commissioning are required before it can be put into
operation, significantly reducing construction and power outage
time.
Low Operation and Maintenance Costs: Due to its maintenance-free
nature, the transformer saves significant manual inspection and
maintenance costs in the long term.
5. Flexibility and Scalability
Plug-and-Play: It can be used as a mobile substation, offering
significant advantages for temporary power needs and emergency
power supply (such as for large-scale events and construction
sites). It can be relocated at any time after use.
Flexible Solutions: The number of outgoing circuits and protection
functions (such as circuit breakers and meters) on the low-voltage
side can be flexibly configured according to user needs.
6. Energy Saving and Environmental Protection
Low Loss: Utilizing high-quality silicon steel sheets and advanced
manufacturing processes, the transformer exhibits low no-load and
load losses, aligning with energy conservation trends.
Low Noise: The damping effect of the oil tank and oil effectively
suppresses vibration in the core and windings, resulting in low
operating noise.
Excellent Oil-Immersed Heat Dissipation: Using insulating oil as
the cooling medium, the transformer achieves high heat dissipation
efficiency, ensuring the transformer's overload capacity and
service life.
