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TSTY 132kv Power Transformer 138kv Transformer Manufacturer

Primary Voltage Ratings: 132kV, 138kV or others
Secondary Voltage Ratings: 11/10.5/6.6/6.3/33 kV or others
H.V. Tap Range: ±8×1.25% or others
Connection Type: YNd11 or others
Power Rating: 5000-400000kVA

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.

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The 132kV power transformer and 138kV power transformer are large oil-immersed transformers designed to deliver high performance, reliability, and efficiency in utility grids, substations, and large-scale industrial applications. These transformers meet international standards and are engineered to handle diverse operating conditions, ensuring stable and safe power transmission.

They are widely used by power utilities and industries worldwide, offering customizable solutions for various configurations and voltage classes.

Why Choose TSTYNICE 132kV & 138kV Transformers?

Power Ratings: Typical capacities range from 80 MVA up to 500 MVA, with options for single-phase transformers forming three-phase banks.
Voltage Class: Suitable for 132 kV, 138 kV, and voltage levels up to 550 kV.
Voltage Regulation: Equipped with On-Load Tap Changer (OLTC) and No-Load Tap Changer (NLTC) for flexible voltage adjustment.
External tank coating and metallization for harsh or corrosive environments.
Service life up to 30+ years with minimal maintenance.
Proven track record in North America, South America, Asia, and Africa.
Local after-sales service support, with response within 24 hours in many regions.
Customizable layouts to fit project-specific needs (bushings, radiators, OLTC position, control cabinet configuration).
Designed for safety, reliability, and efficiency, even in extreme environments.

132kv Class Three-phase two winding OLTC power transformer
Rated Power	High Voltage	Low Voltage	No-load Loss(kw)	On-load Loss(kw)	No Load current(%)
10MVA	132 kV 138 kV	6.3 kV 6.6 kV 10.5 kV 11 kV	11.8	51.2	0.82
12MVA			13.7	59.5	0.82
15MVA			16.3	73.1	0.76
20MVA			19.5	88.4	0.76
25MVA			22.7	105	0.69
30MVA			27.4	126	0.69
37.5MVA			32.9	148	0.63
50MVA			38.9	184	0.63
60MVA			46.4	221	0.57

Power	75000/100000 kVA
HV rated voltage	138 kV
Rated LV voltage	13.8 kV
Constructive form	Conservator with bag
NBI (AT)	650.0 kV
Standard	NBR 5356
Frequency	60.0 Hz
VECTOR GROUP	Ynd1
Phase	Three-phase
Instalation	Outdoor
Above sea level	1000.0 m
Atmosphere	Not aggressive
Maximum ambient temperature	40.0 °C
K Factor	K1
Taps	± 2x2,5%
Insulating temperature class	E (120 ºC)
Cooling	ONAF
HV/LV conductors material	Cu/Cu
Winding temperature rise	65.0 °C
Hot spot	80.0 °C
Impedance	0.1333
No-load losses	46.00 kW
Total losses	481.56 kW
Exciting current	0.004
Noise level	81.0 dB
Partial discharge	300.0 pC

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.