35+kV Three-Phase Oil-Immersed Transformer
35+kV three-phase oil-immersed distribution transformer with low no-load and on-load losses, oxygen-free copper coil, and ANSI/IEC compliance.
Our 35+kV three-phase oil-immersed distribution transformer is engineered to comply with ANSI C57.12.00 and IEC 60076 standards, delivering dependable performance for utilities and industrial power systems requiring higher voltage class distribution equipment. Built with a focus on reduced energy loss and superior core construction, this transformer is widely used across the country for demanding distribution applications.
Overview
At the 35+kV voltage class, minimizing energy loss becomes increasingly important for overall system efficiency, and this transformer is designed with both no-load loss and on-load loss significantly lower than comparable units. This reduction in losses translates directly into improved operating efficiency and lower long-term energy costs for utilities and industrial customers running higher voltage distribution networks.
Core and coil quality are central to this transformer's performance. It's built with C.R.G.O. (cold-rolled grain-oriented) core type construction, a material choice known for reducing core losses and improving magnetic efficiency compared to standard core materials. This is paired with high-quality oxygen-free copper coil windings, which offer superior conductivity and reduced resistive losses, further supporting the transformer's low-loss performance at the 35+kV class.
Beyond electrical performance, this transformer is built for safe, reliable operation with a good overall appearance suited to both industrial and utility installations. Compliance with ANSI C57.12.00 and IEC 60076 standards ensures the unit meets recognized international benchmarks for safety and performance, giving customers confidence in its reliability. Widely used across a range of distribution applications nationwide, the 35+kV three-phase oil-immersed transformer is a strong choice for utilities, industrial facilities, and infrastructure projects requiring standards-compliant, low-loss power distribution at higher voltage classes.
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Product Specifications
- Voltage Class
- 35+kV
- Type
- Three-phase oil-immersed distribution transformer
- Standards
- ANSI C57.12.00, IEC 60076
- HV Voltage Options
- 35 – 38.5 kV
- LV Voltage Options
- 3.15 / 3.3 / 6.3 / 6.6 / 10.5 / 11 kV
- HV Tapping
- ±5%, ±2×2.5%
- Vector Group
- Yd11 / Ynd11
- Core Material
- High-quality C.R.G.O. core, oxy-gen-free copper coil
- Available Capacities
- 630 – 31500 kVA
- No-load Loss Range
- 830 – 20220 W
- Load Loss (75°C) Range
- 7870 – 112860 W
- Short Circuit Impedance
- 6.5% – 8.0%
- No-load Current Range
- 0.32% – 1.10%
- Model Number Pattern
- VO-UT-3OID-{kVA}-{HkV}-{LkV}
Specification Table
| Rated Capacity (kVA) | No-load Loss (W) | Load Loss 75°C (W) | No-load Current (%) |
|---|---|---|---|
| 630 | 830 | 7870 | 1.1 |
| 800 | 980 | 9410 | 1 |
| 1000 | 1150 | 11540 | 1 |
| 1250 | 1410 | 13940 | 0.9 |
| 1600 | 1700 | 16670 | 0.8 |
| 2000 | 2180 | 18380 | 0.7 |
| 2500 | 2560 | 19670 | 0.6 |
| 3150 | 3040 | 23090 | 0.56 |
| 4000 | 3620 | 27360 | 0.56 |
| 5000 | 4320 | 31380 | 0.48 |
| 6300 | 5250 | 35060 | 0.48 |
| 8000 | 7200 | 38480 | 0.42 |
| 10000 | 8700 | 45320 | 0.42 |
| 12500 | 10080 | 53870 | 0.4 |
| 16000 | 12160 | 65840 | 0.4 |
| 20000 | 14400 | 79520 | 0.4 |
| 25000 | 17020 | 94050 | 0.32 |
| 31500 | 20220 | 112860 | 0.32 |
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