Xiamen Winley Electric Co.,Ltd
| Delivery Time | 30days |
| Standard | ANSI/IEEE |
| Phase | Three Phase |
| Packaging Details | Plywood case |
| Secondary Voltage | 480Y/277V |
| Supply Ability | 500set/month |
| Temperature Rise | 80K |
| Payment Terms | T/T |
| Cooling Class | AN |
| Capacity | 300kVA |
| Type | Dry type, Cast Resin Transformer |
| Primary Voltage | 12470Y/7200V |
| Model Number | SCB-300/12.47 |
| Place of Origin | CHINA |
| Brand Name | WINLEY |
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Product Specification
| Delivery Time | 30days | Standard | ANSI/IEEE |
| Phase | Three Phase | Packaging Details | Plywood case |
| Secondary Voltage | 480Y/277V | Supply Ability | 500set/month |
| Temperature Rise | 80K | Payment Terms | T/T |
| Cooling Class | AN | Capacity | 300kVA |
| Type | Dry type, Cast Resin Transformer | Primary Voltage | 12470Y/7200V |
| Model Number | SCB-300/12.47 | Place of Origin | CHINA |
| Brand Name | WINLEY | ||
| High Light | 300kVA cast coil transformer ，dry type distribution transformer 480Y/277V ，ANSI/IEEE DOE cast coil transformer | ||
Product Overview
This 300kVA cast resin dry type distribution transformer is suitable for outdoor commercial buildings, utility distribution points, light industrial facilities, and site power systems that require 480Y/277V service from a 12.47kV class primary feeder.
The transformer is configured for 12470Y/7200V to 480Y/277V, three-phase, grounded-wye to grounded-wye operation, with YNyn0 vector group, 95kV HV BIL, 30kV LV BIL, 5-position HV taps, terminal-lug connections, and primary 40E fused overcurrent protection.
With a NEMA 3R coated steel enclosure, ANSI 61 grey epoxy finish, pad/floor mount structure, removable access doors, temperature monitoring, and space heaters with humidistat control, the unit supports specification review for outdoor distribution projects where enclosure protection, service access, and voltage matching are key purchasing considerations.
Why Choose US
1. Winley Electric manufactures cast resin transformers up to 10 MVA and 35 kV, designed in accordance with applicable ANSI/IEEE, AS 60076, IEC 60076 and related dry-type transformer standards.
2. Winley Electric cast resin transformers are engineered for demanding applications, offering high overload capability, low maintenance needs, strong mechanical strength, and reliable short-circuit withstand performance.
3. Winley Electric has extensive experience in cast resin transformer projects and can tailor product designs for solar PV, data centers, and other applications, including dual-split winding designs, multi-tap designs, and other customized electrical configurations.
Product Photos
Main Data
| Item | Data |
|---|---|
| Product type | Cast Resin Dry Type Distribution Transformer |
| Rated capacity | 300kVA |
| Phase | Three phase |
| Primary voltage | 12470Y/7200V |
| Secondary voltage | 480Y/277V |
| Frequency | 60Hz |
| Vector group | YNyn0 |
| HV BIL / LV BIL | 95kV / 30kV |
| Cooling method | AN |
| Insulation class | Class F, 155°C |
| Temperature rise | 80°C |
| Winding material | Aluminum |
| Ambient temperature rating | 40°C |
| Altitude rating | 1000m |
| Sound level | 56dBA |
| No-load loss | 603W |
| Load loss | 2,856W |
| Impedance | 5.42% |
| Reported efficiency | 99.00% |
| Dimensions | 71L × 59W × 75H in |
| Total mass | 3,779lbs |
Technical drawings
Metal enclosure cabinet
Provides external protection for the transformer body and supports outdoor pad or floor installation.
Front and rear removable access doors
Allow easier access for wiring inspection, cleaning, maintenance, and component replacement.
Ventilation louvers and door-mounted fans
Improve air circulation inside the enclosure and help discharge heat from the transformer compartment.
Transparent protective barrier
Separates live parts from the access area while allowing visual inspection of internal connections.
Cast resin coil assembly
Forms the main winding structure and completes the voltage conversion inside the transformer.
HV/LV terminals with copper busbars and terminal lugs
Provide connection points for incoming primary cables and outgoing secondary distribution circuits.
Primary fuses
Provide primary-side overcurrent protection and support transformer protection coordination.
Temperature and humidity control components
Include coil temperature sensors, digital temperature monitor, alarm/trip indication, space heaters, and humidistat control for monitoring and enclosure environment control.
| Sector | Suitable applications |
|---|---|
| Utility distribution | Local distribution points, service entrance step-down, outdoor distribution nodes |
| Commercial facilities | Retail centers, office buildings, schools, service buildings |
| Light industrial facilities | Workshops, small manufacturing sites, process support loads |
| Outdoor distribution networks | Site power systems, campus distribution, equipment yards |
| Infrastructure projects | Pump stations, municipal facilities, utility service cabinets |
|
Rated capacity |
High Voltage |
Low |
Connection Symbol |
No-Load Loss |
On-Load Loss |
No Load Current |
Weight |
Dimension L*W*H(mm)
|
|
100 |
6 6.3 10 10.5 11 |
0.4 |
Dyn11 |
540 |
1990 |
2.4 |
520 |
1600*1300*2200 |
|
315 |
970 |
4080 |
1.8 |
1085 |
1800*1350*2200 |
|||
|
500 |
1350 |
5790 |
1.8 |
1520 |
2000*1400*2200 |
|||
|
630 |
1530 |
6840 |
1.6 |
1820 |
2000*1400*2200 |
|||
|
1000 |
2070 |
9780 |
1.4 |
2550 |
2450*1450*2200 |
|||
|
1250 |
2380 |
11500 |
1.4 |
2900 |
2300*1500*2200 |
|||
|
1600 |
2790 |
13800 |
1.4 |
3490 |
2400*1550*2200 |
|||
|
2000 |
3240 |
16300 |
1.2 |
4220 |
2600*1600*2200 |
|||
|
2500 |
3870 |
19300 |
1.2 |
4955 |
2600*1600*2200 |
Company Details
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 ...
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