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Multi-Capacity Multi-Voltage 10/11.2/12.5/14 MVA Oil Immersed Substation Power Transformer 12470V to 2400D 4160Y/2400V ONAN/ONAF ANSI/IEEE Standards
Product Overview
The S-10000/12.47/4.16&2.4&2.4 is a three phase outdoor substation power transformer with a 10/11.2/12.5/14 MVA ONAN/ONAF rating. It is configured for 12470V Delta primary input and multiple medium-voltage secondary outputs, including 2400V Delta, 2400Y/1385V Wye and 4160Y/2400V Wye, making it suitable for utility distribution substations, industrial plants, pump stations, renewable project substations and large outdoor distribution networks that require both 2.4kV and 4.16kV power levels.
Built with mineral oil insulation, aluminum windings, silicon steel core, side-mounted ATC terminal chambers, porcelain bushings and a 7-position off-load tap range from 14400V to 11500V, the transformer helps match site voltage conditions while maintaining medium-voltage distribution flexibility. The ANSI C57.12.00 design, HV BIL 110kV, LV BIL 60kV and 55/65/55F/65F°C temperature rise support outdoor substation operation where insulation coordination, voltage adjustment and load-stage flexibility are important.
Product photos
Main Data
Item
Data
Product type
Three phase outdoor substation power transformer
Rated capacity
10/11.2/12.5/14 MVA
Phase
3 Phase
Primary voltage
12470V Delta
Secondary voltage
2400V Delta; 2400Y/1385V; 4160Y/2400V
Frequency
60Hz
Vector group
Dd0y1y1
HV BIL / LV BIL
110kV / 60kV
Cooling method
ONAN/ONAF
Winding material
Aluminum
Temperature rise
55/65/55F/65F°C
No-load loss
8301W
Load loss
64154W at 85°C
No-load current
0.16%
Impedance
6.90%
Dimensions
162 × 102 × 120 in
Weight
54961 lbs
Product Advantages
Multi-Capacity ONAN/ONAF Cooling Structure Rated at 10/11.2/12.5/14 MVA, this transformer uses radiator banks and cooling fan assemblies to support ONAN/ONAF operation. It helps customers cover normal load and fan-assisted peak demand with one unit, reducing the need for immediate transformer replacement when load requirements increase.
Multi-Voltage Secondary Design Configured with 12470V primary input and 2400D, 2400Y/1385V and 4160Y/2400V secondary outputs, the transformer helps customers match different medium-voltage distribution requirements with one flexible design.
Side-Mounted HV and LV ATC Terminal Chambers Side-mounted HV and LV ATC chambers provide accessible cable termination space for outdoor substation layouts, helping customers simplify field wiring, inspection and maintenance.
Technical drawings
Standard Features
Pressure / Vacuum Gauge Shows internal tank pressure for safe operation monitoring.
Pressure Relief Valve Releases excess internal pressure to protect the transformer tank.
Radiator Butterfly Valve Isolates the radiator oil circuit during maintenance.
Nameplate Displays ratings, wiring data, standard and identification information.
Under-Oil Arrester Isolation Switch Isolates the HV arrester circuit for inspection or maintenance.
Temperature Controller Monitors temperature and controls alarms, trips or cooling fans.
Oil Filling Port Used for oil filling, filtering or maintenance.
Cooling Fan Assemblies Force air through the radiator to support ONAF cooling.
Oil Level Indicator Displays transformer oil level inside the tank.
Oil Temperature Gauge Displays transformer oil temperature.
Off-Circuit Tap Changer Adjusts winding taps to match site voltage conditions.
Control Terminal Box Houses control wiring and accessory terminals.
Applications
Utility Distribution Substations Suitable for 12.47kV feeder substations, municipal distribution points and outdoor medium-voltage networks requiring 2.4kV or 4.16kV secondary power.
Industrial Facilities Suitable for large plants, processing facilities, pump stations and heavy electrical rooms requiring stable medium-voltage power distribution.
Renewable Energy Project Substations Suitable for solar, wind and energy storage site distribution substations requiring outdoor transformer solutions for collection, auxiliary power or medium-voltage distribution systems.
Commercial and Infrastructure Power Systems Suitable for campuses, water treatment facilities, transport infrastructure and large outdoor power supply points requiring centralized medium-voltage power distribution.
Replacement and Retrofit Projects Suitable for existing outdoor substations requiring transformer replacement with 12.47kV primary input and 2.4kV / 4.16kV secondary output compatibility.
1. With extensive experience in North American projects, Winley Electric designs substation transformers to meet applicable ANSI/IEEE, CSA, NEMA and related standard requirements. 2. With a stable supply chain, mature production processes, Winley Electric can deliver substation power transformers within 12 weeks after technical confirmation. 3. Winley Electric provides complete English technical documentation, 24/7 technical response, spare parts support, and a 2-year warranty to support project installation and long-term operation.
Production Process
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Seller
Year Established:
2007
Total Annual:
$45M-$60M
Employee Number:
150~210
Ecer Certification:
Verified Supplier
R&D and production capabilities
Winley Electric boasts a team of dozens of experienced senior engineers who are well-versed in transformer standards of different countries including ANSI, IEEE, CSA, DOE2016, NEMA and IEC60076, and who can tailor cost-effective transformer solutions ... R&D and production capabilities
Winley Electric boasts a team of dozens of experienced senior engineers who are well-versed in transformer standards of different countries including ANSI, IEEE, CSA, DOE2016, NEMA and IEC60076, and who can tailor cost-effective transformer solutions ...