Xiamen Winley Electric Co.,Ltd
| Primary Voltage | 23,900 V |
| Supply Ability | 500set/month |
| Packaging Details | Plywood case |
| Rated Capacity | 1250 kVA |
| Efficiency Standard(s) | Meets DOE 2016 Standards, Meets CSA Standards, Meets ANSI/IEEE Standards |
| Vector Group: | Dyn1 |
| Delivery Time | 30days |
| Secondary Voltage | 13,800Y / 7,970 V |
| Dimensions | 83-W x 91-D x 79-H |
| Type | Pad mounted, Loop feed |
| Payment Terms | T/T |
| Place of Origin | CHINA |
| Brand Name | WINLEY |
| Model Number | ZGS11-H-1250/23.9 |
| Certification | UL/cUL |
View Detail Information
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Product Specification
| Primary Voltage | 23,900 V | Supply Ability | 500set/month |
| Packaging Details | Plywood case | Rated Capacity | 1250 kVA |
| Efficiency Standard(s) | Meets DOE 2016 Standards, Meets CSA Standards, Meets ANSI/IEEE Standards | Vector Group: | Dyn1 |
| Delivery Time | 30days | Secondary Voltage | 13,800Y / 7,970 V |
| Dimensions | 83-W x 91-D x 79-H | Type | Pad mounted, Loop feed |
| Payment Terms | T/T | Place of Origin | CHINA |
| Brand Name | WINLEY | Model Number | ZGS11-H-1250/23.9 |
| Certification | UL/cUL | ||
| High Light | 1250kVA pad mounted transformer ，23.9kV to 13.8kV loop feed transformer ，ANSI IEEE dead front transformer | ||
1250kVA 23.9kV to 13.8kV Loop Feed Dead Front Pad Mounted Transformer ANSI IEEE Standards
Product Overview
This 1250 kVA three-phase pad-mounted transformer is designed for outdoor medium-voltage distribution systems. It is rated at 23.9 kV / 13.8Y/7.97 kV, with ONAN cooling, Dyn1 vector group, non-PCB mineral oil, and compliance with ANSI C57.12.34 and DOE 2016 requirements.
The transformer features a loop feed dead-front high-voltage compartment for medium-voltage cable connection. Its 13.8 kV live-front secondary compartment is equipped with a shielding isolation panel to provide physical separation for open-type medium-voltage terminals, supporting safer operation and maintenance access. It is suitable for utility distribution, industrial facilities, renewable energy interconnection, and large commercial or infrastructure projects.
Product Display
Main data
| Item | Specification |
|---|---|
| Product Type | Three Phase Pad Mounted Transformer |
| Rated Capacity | 1250 kVA |
| Primary Voltage | 23,900 V |
| Secondary Voltage | 13,800Y / 7,970 V |
| Phase | 3 Phase |
| Frequency | 60 Hz |
| Vector Group | Dyn1 |
| Cooling Type | ONAN |
| HV BIL / LV BIL | 95 kV / 95 kV |
| Temperature Rise | 65°C |
| Impedance | 6.49% |
| Efficiency | 99.20% |
| No-load Loss | 1,264.7 W |
| Load Loss | 12,888.2 W at 85°C |
| Tap Changer | 5-position tap changer, ±2.5% |
| Insulating Fluid | Mineral Oil, Non-PCB |
| Installation | Outdoor |
| Standard | ANSI C57.12.34, DOE 2016 compliant |
| Total Weight | 10250 lbs |
| Dimensions | 83-W x 91-D x 79-H |
Technical drawings
Standard Features
| Feature | Customer Value |
|---|---|
| ANSI/IEEE compliant design | Supports North American pad-mounted transformer project requirements. |
| 23.9 kV to 13.8 kV medium-voltage step-down design | Suitable for utility feeders, industrial distribution and renewable energy interconnection. |
| Loop-feed dead-front HV compartment | Improves cable connection safety and supports medium-voltage distribution layouts. |
| 95 kV BIL on HV and LV sides | Provides defined insulation withstand capability for medium-voltage operation. |
| 5-position tap changer | Allows voltage adjustment based on actual feeder or site voltage conditions. |
| Bayonet fuse and load-break switching configuration | Supports transformer protection and operation in outdoor distribution systems. |
| Secondary-side shielding isolation panel | Installed in the 13.8 kV live-front secondary compartment to provide physical separation for open-type medium-voltage terminals. |
| Factory-tested performance | Tested for winding resistance, insulation resistance, ratio error, impedance, losses, withstand voltage and pressure integrity. |
Applications
| Sector | Applications |
|---|---|
| Utility Distribution | 25 kV to 15 kV feeder conversion, outdoor distribution nodes, pad-mounted substations |
| Renewable Energy | Solar farms, wind farms, collection systems and medium-voltage interconnection points |
| Industrial Facilities | Manufacturing plants, industrial parks, mining sites and process facilities using 13.8 kV distribution |
| Commercial & Infrastructure | Data centers, campuses, airports, water treatment plants and large commercial facilities |
| Replacement Projects | Outdoor pad-mounted transformer replacement requiring ANSI/IEEE compliance and loop-feed configuration |
Specification
| Rated Power (KVA) |
High Voltage (KV) |
Low Voltage (V) |
No-load Loss (W) |
On-load Loss (W) |
Height (mm) |
Depth (mm) |
Width (mm) |
Weight (kg) |
Weight (Lbs) |
| 75KVA | 34.5KV 4.160KV 12.47KV 13.2KV 13.8KV 24940GrdY/14400 1247Grdy/7200 4160GrdY/2400 or others |
277V 347V 480V 600V 120/240V 208GrdY/120 415GrdY/240 480GrdY/277 600Y/347 |
180 | 1250 | 1430 | 910 | 1930 | 645 | 1422 |
| 150KVA | 280 | 2200 | 1530 | 980 | 1510 | 989 | 2180 | ||
| 300KVA | 480 | 3650 | 1680 | 1080 | 1660 | 1415 | 3119 | ||
| 500KVA | 680 | 5100 | 1790 | 1160 | 1810 | 1905 | 4200 | ||
| 750KVA | 980 | 7500 | 2030 | 1300 | 2030 | 2755 | 6074 | ||
| 1000KVA | 1150 | 10300 | 1854 | 1549 | 1651 | 3235 | 7132 | ||
| 1500KVA | 1640 | 14500 | 2150 | 1570 | 2210 | 5835 | 12864 | ||
| 2000KVA | 2160 | 20645 | 2220 | 1600 | 2380 | 6430 | 14175 | ||
| 2500KVA | 2680 | 23786 | 2330 | 1650 | 3070 | 8865 | 19544 | ||
| 3000KVA | 3300 | 30300 | 2460 | 1850 | 3260 | 11300 | 24912 | ||
| 3735KVA | 4125 | 37875 | 2680 | 2060 | 4080 | 14400 | 31746 |
Production process
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 according to... 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 according to...
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