Oil-filled voltage-regulating transformer
1. Equipped with a multi-stage voltage regulation system, which ensures high adaptability to grid voltage fluctuations and guarantees stable power supply even under complex operating conditions.
2. It has an oil-filled design with natural cooling (through oil circulation), which eliminates the need for external fans, reduces operating noise, and decreases the likelihood of faults.
3. Manufactured in strict accordance with national standards; it features reliability, a high insulation strength margin, and resistance to short-circuit currents, ensuring stable and continuous operation over a long period.
4. It ensures high power quality; the use of the classic YN0d11 winding connection scheme effectively suppresses third-order harmonics, protecting connected electrical equipment.
5. It features simplicity and convenience in operation and maintenance; a well-designed, rational construction minimizes the need for servicing, which allows reducing long-term operating costs.
6. It undergoes strict factory tests; each product is subjected to comprehensive inspection before leaving production. There is a possibility to verify the authenticity of the equipment on the official website; a reliable after-sales service system is also in place.
Product Overview
Oil-immersed voltage-regulating transformer type S-1600/80, manufactured by Xinda Transformer Co., Ltd., is produced in strict accordance with national standards GB1094.1 and GB/T6451. This is a power transformer with natural oil cooling and natural air circulation (ONAN cooling type), featuring stable voltage regulation characteristics. The device is intended for use in power transmission and distribution systems — for example, in industrial and mining enterprises or electrical substations — and is characterized by reliable operation and ease of maintenance.
Main technical parameters
- Model: S-1600/80
- Rated power: 1600 kVA
- Rated frequency: 50 Hz
- Connection group: YN0d11
- Cooling method: ONAN (oil-immersed with natural cooling)
- Short-circuit voltage: 12.89%
- Insulation level: LI325 AC146/AC5
- Voltage regulation steps (high-voltage winding, star connection): 6-position tap changer
Switch position
Voltage (V)
Current (A)
Position
Voltage (V)
Current (A)
Position |
Voltage (V) |
Current (A) |
1 |
2000 |
461.9 |
2 |
3600 |
256.6 |
3 |
12000 |
77 |
4 |
24000 |
38.5 |
5 |
42000 |
22.0 |
6 |
80000 |
11.6 |
- Low-voltage side (“delta” connection): rated voltage 1000 V, rated current 923 A
- Mass characteristics: mass of the active part (core with windings) — 5000 kg; oil mass — 6000 kg; total mass — 11,500 kg
Product features
1. Oil-immersed design with natural cooling (ONAN): heat is dissipated through the natural circulation of transformer oil. The absence of forced cooling systems ensures a low noise level during operation and reduces maintenance costs.
2. Voltage regulation by means of tappings: on the high-voltage side, 6 regulation steps are provided, which makes it possible to compensate for voltage fluctuations under various operating conditions and maintain a stable output voltage on the low-voltage side.
3. Winding connection group YN0d11: the “star” connection with neutral brought out on the high-voltage side and the “delta” connection on the low-voltage side effectively suppress third-order harmonics, ensuring high quality of power supply.
4. High insulation standards: the design has excellent resistance to impulse overvoltages and a significant safety margin, which guarantees reliability during long-term continuous operation.
5. Use of high-quality materials for the core and windings: ensures low power losses, high resistance to short-circuit currents and a long service life.
