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TSTY three-phase oil-filled power transformers (1000 kVA to 4000 kVA) are designed for reliable energy transmission and distribution in medium- and high-voltage networks. Built with precision-engineered silicon steel cores and high-conductivity copper or aluminum windings, these transformers ensure low losses, high efficiency, and long service life. | ![]() |
![]() | Features: 1. The transformer connection group uses Dyn11 to reduce the impact of harmonics on the power grid and improve the quality of power supply. 2. The transformer core is laminated with quality cold-rolled silicon steel sheets, which greatly reduces the no-load loss and no-load current. The core is bound to ensure the tightness of the core and reduce noise. 3. Fully sealed structure, which prolongs the service life. A positioning mechanism is added to the body to prevent displacement during transportation. All fasteners are equipped with fastening nuts to ensure that the fasteners are not loose during long-term operation. 4. Lower noise value than standard requirement. After this series of transformers have been transported normally, the relevant parts can be installed without core inspection, and they can be put into operation once the acceptance test is qualified. |
| Rated Capacity (KVA) | Voltage Combination | Connection Group Symbol | No-load Loss R(W) | Load Loss R(W) | Impedance Voltage(%) | No-load Current (%) | ||
| High Voltage(KV) | Tapping Range of High Voltage | Low Voltage (KV) | ||||||
| 30 | 15 | 0.4 | 90 | 690/660 | 5.5 | 2.1 | ||
| 50 | 130 | 1010/960 | 2 | |||||
| 63 | 150 | 1200/1150 | 1.9 | |||||
| 80 | 180 | 1440/1370 | 1.8 | |||||
| 100 | 200 | 1730/1650 | 1.6 | |||||
| 125 | 240 | 2080/1980 | 1.5 | |||||
| 160 | Dyn11 | 290 | 2540/2420 | 1.4 | ||||
| 200 | ±5% | Yzn11 | 340 | 3000/2860 | 1.3 | |||
| 250 | ±2x2.5% | Yyn0 | 400 | 3520/3350 | 1.2 | |||
| 315 | 480 | 4210/4010 | 1.1 | |||||
| 400 | 570 | 4970/4730 | 1 | |||||
| 500 | 680 | 5940/5660 | 1 | |||||
| 630 | 810 | 6820 | 6 | 0.9 | ||||
| 800 | 980 | 8250 | 0.8 | |||||
| 1000 | 1150 | 11330 | 0.7 | |||||
| 1250 | 1380 | 13200 | 0.7 | |||||
| 1600 | 1660 | 15950 | 0.6 | |||||
| 2000 | 1950 | 19140 | 0.6 | |||||
| 2500 | 2340 | 22200 | 0.5 | |||||
Digital Manufacturing Excellence & Scalable Output
At TSTYNICE, our 250,000㎡ smart industrial base in Henan is equipped with state-of-the-art automated systems and 5G-enabled digital control. From raw material to final delivery, every step is precisely managed for optimal quality and efficiency.
Our 99% automation rate supports daily output of 50 oil-immersed transformers, plus 3,000 substations and 10,000 switchgear units annually—ensuring rapid response to bulk orders and urgent project needs worldwide.
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Q: Are you a factory or trading company?
A: We are an integrated manufacturer and exporter. OEM/ODM services are supported.
Q: What are your main advantages?
A: Over 30 years of industry experience, advanced production lines, reliable quality, fast lead time, and responsive service. Free spare parts are also available for support.
Q: How fast can you deliver?
A: Delivery time depends on the order quantity. Normally 15–20 days after receiving deposit.
Q: What payment methods do you accept?
A: T/T, L/C, PayPal, Visa, Western Union — based on your order needs.
Q: Do you inspect the products before shipment?
A: Yes, we conduct 100% quality inspection before delivery.
Q: What certifications do you hold?
A: CE, SGS, ISO, IEC, GOST —all internationally recognized. We also partner with brands like DuPont, ABB, and Siemens.
Q: How can I be sure you're using quality materials?
A: We welcome material testing upon delivery. We focus on long-term partnerships, not one-time transactions.
TSTYNICE transformers hold ISO 9001, IEC 60076, CE, GOST, SGS, and BV certifications, with 158 patents (20 inventions). Our CNAS-accredited lab ensures global compliance across 80+ markets.
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