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Brand Name : WINLEY
Model Number : ZGS-500/12.87
Certification : UL/cUL,CE,ISO
Place of Origin : CHINA
MOQ : 1unit
Price : $5000-$150000
Payment Terms : T/T
Supply Ability : 1000set/month
Delivery Time : 30days
Packaging Details : Plywood case
Transformer Type : Liquid Filled Pad Mounted Transformer
Phase : Three Phase
Vector group : Dd0
Capacity : 2500 KVA
Primary Voltage : 12470V
Secondary Voltage : 480V
Winding material : Aluminum
Efficiency Ratings : ASNI/IEEE C57.12.34
500Kva 3 Phase Pad Mounted Transformer 12.87KV To 240V Power Distribution Transformer 7‑Tap Multi-Voltage Flexibility UL/cUL Listed
This 500 kVA transformer is designed with a dead-front configuration and follows a loop feed layout. Crafted by WINLEY ELECTRIC. Its specifications include a high voltage of 12.87 kV in a Delta connection, while the low voltage stands at 240/120V. It adheres to the ASNI/IEEE C57.12.34 Standard.




Main data
| specification data | ||||
| No. | Particulars | Unit | Specification | |
| 1 | Type | ~ | pad mounted, loop feed | |
| 2 | Rated capacity | kVA | 500 | |
| 3 | No. of Phase | ~ | 3 | |
| 4 | Primary voltage | V | 12870 | |
| 5 | Primary termination | ~ | (6) 15kV class, BIL95kV, 200A well&insert | |
| 6 | Secondary voltage | V | 240/120 | |
| 7 | Secondary connection | ~ | (4) 6-hole spade | |
| 7 | Tapping type | ~ | off-circuit tapping | |
| 8 | Tapping range | % | 14400, 13800, 13200, 12870, 12470, 12000, 11500 | |
| 9 | Cooling method | ~ | ONAN | |
| 10 | Rated frequency | Hz | 60 | |
| 11 | Vector group | ~ | Dd0 | |
| 12 | Insulation class | ~ | A (105℃) | |
| 13 | Temperature rise | K | 65 | |
Technical drawings

Standard Features
• 60 Hz operation.
• 65°C average winding rise.
• Radial & loop feed arrangements.
• Dead and live front type of HV terminals.
• HV BIL 45 – 150 kV (Dead Front) 200 kV (Live Front).
• LV BIL 30 – 60 kV.
• Three-point latching of low-voltage door.
• High-voltage door, which can be opened only after the low-voltage door is opened.
• Rigid steel partition.
• Transformer tank welded from cover to base.
• Permanent nameplate.
• One-inch NPT pipe cap filling provision.
• ANSI tank ground pads.
• One-inch drain valve and sampler.
• Automatic pressure-relief valve (35 SCFM).
• Tap changer with (2) 2.5% full capacity taps above and below nominal.
• One 10”x18” (or 14”x25”) hand hole in transformer tank cover.
• Painted olive-green color (Munsell 7GY 3.29/1.5).
• Designed, manufactured and tested in accordance
with the latest ANSI standards

Why choose us
WINLEY offers a complete line of liquid-filled three-phase pad-mounted transformers that meet ANSI®/IEEE® standards and have obtained UL/cUL certification. With voltages up to 34.5 kV and ratings up to 5,000 kVA, these transformers suit high-voltage and large-capacity applications like substations and industrial power systems. Their oil-immersed design ensures superior performance and stability in high-load, high-voltage scenarios.

Application
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


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500Kva 3 Phase Pad Mounted Transformer 12.87KV To 240V Power Distribution Transformer 7‑Tap Multi-Voltage Flexibility UL Listed Images |