Home » Product Category » Three Phase Oil Immersed Power Transformer » TSTY 100KVA 150KVA 200KVA 250KVA 300KVA 400KVA 500KVA 630KVA 750KVA 800KVA Three Phase Oil-Immersed Power Transformer

TSTY 100 KVA Three Phase Oil-Immersed Power Transformer

TSTYNICE 15 kv Oil-Immersed Power Transformer

Share to:

TSTY 100KVA 150KVA 200KVA 250KVA 300KVA 400KVA 500KVA 630KVA 750KVA 800KVA Three Phase Oil-Immersed Power Transformer

TSTY three-phase oil-immersed power transformers (100 kVA–800 kVA) are engineered for efficient and stable voltage conversion in power distribution networks. Our 100kva transformer typical voltage options include 11kV/415V, 33kV/400V, or customized ratios ranging from 6kV to 33kV . Built with copper or aluminum windings, robust insulation, the transformer offers long service life, reliable performance, and low maintenance — ideal for consistent and safe power delivery.

Technical Specifications:
• Comprehensive Range: Models S9 through S22
• Certification Mastery: ISO 9001, IEC, SGS, Intertek, CCC, CE, BV, GOST compliant

For detailed specifications, quotations, or project consultations, please contact us:
Email: sales@tstytransformer.com
WhatsApp: +86-18001856258
Our technical team is ready to assist you — wherever your business operates.

Availability:



Inquire

transformer manufacturers 750 kva oil filled transformer

Product Advantage

Technical Parameters

Factory Show

FAQ

Certificate

Conductor Rod: H62 material offers excellent conductivity, reducing heat generation during operation.
Sealing Gasket: Acrylic rubber offers excellent oil, heat, and oxidation resistance.
Porcelain Bottle: Both high and low voltage valves utilize grooved porcelain bottles. The grooves provide positioning and protection for the sealing gaskets, reducing UV exposure to the gaskets, increasing their service life and effectively controlling oil leakage in oil-immersed transformers.

Porcelain Bottle Foot: The foot is available in yellow, green, and red phases. The surface is electrostatically sprayed with plastic for corrosion protection, allowing for intuitive identification of the A, B, and C phases. The plastic spraying enhances corrosion resistance.
Securing Bolts: Hot-dip galvanized bolts offer superior corrosion resistance and are rust-free for 30 years.
Tap Changer: The tap changer features a double seal structure, effectively preventing oil leakage during installation.
Insulating Oil: Utilizes brand-new mineral insulating oil.
Case: National standard steel plates and profiles ensure mechanical strength.
Temperature rise: The product temperature rise design can meet the requirements of long-term operation at full load. The temperature rise is low, the product has strong load capacity and can operate at full load continuously for a long time.

Rated Capacity (KVA)	Voltage Combination			Connection Group Symbol	No-load Loss R(W)	Load Loss R(W)	Impedance Voltage(%)	No-load Current (%)
Rated Capacity (KVA)	High Voltage（KV)	Tapping Range of High Voltage	Low Voltage （KV)	Connection Group Symbol	No-load Loss R(W)	Load Loss R(W)	Impedance Voltage(%)	No-load Current (%)
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

Capacity	Typical Voltage	Common Applications
100KVA	11kV / 415V or 6.6kV / 400V	Rural distribution, small residential buildings, street lighting, small shops.
150KVA	11kV / 415V or 6.6kV / 400V	Small farms, workshops, or low-load communities.
200KVA	11kV / 415V or 10kV / 400V	Small factories, office buildings, and local distribution systems.
250KVA	11kV / 415V or 10kV / 400V	Schools, small hotels, apartment complexes, or rural substations.
300KVA	11kV / 415V or 20kV / 400V	Medium-size industrial sites, hospitals, and small shopping centers.
400KVA	11kV / 415V or 20kV / 400V	Industrial plants, commercial complexes, small substations.
500KVA	11kV / 415V or 33kV / 400V	Municipal projects, data centers, and medium-size factories.
630KVA	11kV / 415V or 33kV / 400V	Industrial production lines, logistics centers, infrastructure power supply.
750KVA	11kV / 415V or 33kV / 400V	Large commercial areas, industrial parks, or renewable energy connection points.
800KVA	11kV / 415V or 33kV / 400V	Large factories, mining sites, and regional power distribution systems.

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.

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.