Low-loss Oil-immersed Power distribution transformer 6kV 7.2kV 12kV

Name: Low-loss Oil-immersed Power distribution transformer 6kV 7.2kV 12kV
Brand: Zhejiang Vziman Electric Group Co., Ltd.
SKU: 2871
Price: 12400.00 USD
Availability: InStock

Zhejiang Vziman Electric Group Co., Ltd.

14yrs 300+ staff 10000+m² US$150000000+ China

Attributes Description Documentation Resource Library Supplier

Key attributes

Brand	Vziman
Model NO.	Low-loss Oil-immersed Power distribution transformer 6kV 7.2kV 12kV
Rated voltage	12kV
Rated frequency	50/60Hz
Rated capacity	1250kVA
Series	S22

Description

This Oil-immersed Power distribution transformer, with its core advantages of energy efficiency, environmental friendliness, and safety and reliability, has become an ideal Power distribution transformer for factory production, rural power supply, and urban power transmission and distribution network scenarios. It is also a trusted choice for users in the field of power supporting facilities.

To create this high-performance Oil-immersed Power distribution transformer, our company deeply integrates two key directions: new material R&D and new process application. At the same time, we combine independent innovation technology with the introduction of advanced industry technologies, and have carried out multiple rounds of optimization and innovative design for the Power distribution transformer’s core structure and coil layout. Ultimately,

we not only achieved a significant reduction in no-load loss, effectively cutting long-term operational energy consumption costs, but also successfully controlled the equipment’s operating noise—making this Oil-immersed Power distribution transformer more suitable for various scenarios with environmental noise requirements. It is an independently developed Power distribution transformer that embodies technological upgrading and practical value.

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Core Advantages

Multi-Voltage Adaptability：This Oil-immersed Power distribution transformer covers 6kV, 7.2kV, and 12kV rated voltage levels, fitting diverse scenarios (urban grids, industrial parks, rural power networks) without additional voltage-matching equipment. It serves as a versatile Power distribution transformer for different power grid systems.
Ultra-Low Energy Loss：The Oil-immersed Power distribution transformer adopts optimized core & coil design, achieving 30%-40% lower no-load/load loss than standard Power distribution transformer models, slashing long-term operational electricity costs for users.
Reliable Oil-Immersed Structure：The sealed oil insulation of this Oil-immersed Power distribution transformer ensures excellent heat dissipation and insulation performance, withstanding harsh environments (high temperature/humidity) and boasting a 20+ year service life—far exceeding the durability of many conventional Power distribution transformer variants.
Low Noise Operation：Precision winding and structural optimization control the noise of the Oil-immersed Power distribution transformer below 50dB(A), making it suitable for noise-sensitive areas (residential zones, urban built-up districts) where standard Power distribution transformer may fail to meet noise requirements.
Strong Short-Circuit Resistance：Equipped with high-quality copper coils and reinforced body structure, the Oil-immersed Power distribution transformer resists short-circuit impacts, maintaining stable operation even under grid fluctuations—a critical safety advantage for any Power distribution transformer in complex grid environments.
Easy Installation & Maintenance：This Oil-immersed Power distribution transformer features compact size, lightweight design, and complete accessories (oil level gauge, temperature controller) for quick on-site installation; its sealed structure reduces daily maintenance workload, making it a user-friendly Power distribution transformer for on-site teams.

Technical Specifications

Model and Its Meaning

S	22	-M	-□	/□	NX2
Three-phase	Performance level code	Fully sealed	Rated capacity kVA	Voltage class kV	Energy efficiency level

Performance Parameters

Rated Capacity (kVA)	Connection Group Symbol	Voltage Combination (kV)			No - load Loss (W)	Dyn11/Yzn11 Load Loss (W)	Yyn0 Load Loss (W)	Short - circuit Impedance (%)
Rated Capacity (kVA)	Connection Group Symbol	High Voltage	Tap Range	Low Voltage	No - load Loss (W)	Dyn11/Yzn11 Load Loss (W)	Yyn0 Load Loss (W)	Short - circuit Impedance (%)
30	Yyno or Dyn11	10kV 6.3kV 6kV	±5%/±2×2.5%	0.4	65	455	430	4.0
50					80	655	625	4.0
63					90	785	745	4.0
80					105	945	900	4.0
100					120	1140	1080	4.0
125					135	1360	1295	4.0
160					160	1665	1585	4.0
200					190	1970	1870	4.0
250					230	2300	2195	4.0
315					270	2760	2630	4.0
400					330	3250	3095	4.0
500					385	3900	3710	4.0
630					460	4460	-	4.5
800					560	5400	-	4.5
1000					665	7415	-	4.5
1250					780	8640	-	4.5
1600					940	10440	-	4.5
2000					1085	13180	-	4.5
2500					1280	13360	-	4.5

Operating Conditions

This Oil-immersed Power distribution transformer is designed to operate under the following conditions, ensuring stable performance as a professional Power distribution transformer:

Ambient Temperature

Maximum ambient temperature: ≤40°C (daily average ≤30°C)
Minimum ambient temperature: ≥-25°C (for cold regions, customizable to -40°C)
Maximum daily temperature variation: ≤25°C

Altitude

Applicable to areas with altitude ≤1000m; for areas above 1000m, derating operation or customized insulation design is required (to adapt to low air pressure) to ensure the Oil-immersed Power distribution transformer functions normally.

Environmental Humidity

Monthly average relative humidity: ≤90% (at 25°C)
Daily average relative humidity: ≤95% (no condensation on Power distribution transformer surface)

Applications

Urban Distribution: Residential, commercial, high-rise buildings; low-noise design.
Rural Power: Rural stations, irrigation, township supply; multi-voltage adaptability.
Industrial Parks: Factory production, workshop distribution; strong short-circuit resistance.
Power Facilities: Box substations, switching stations, distribution rooms; easy installation.
Renewable Energy: Solar, wind, railway, airport, mining infrastructure.
Noise-Sensitive Areas: Residential, hospitals, schools; noise below 50dB(A).

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Documentation Resource Library Power distribution transformer

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Drawings

English

DWG

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Catalogue

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PDF

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Catalogue

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PDF

Frequently asked questions

Why is the Low-loss Oil-immersed Power distribution transformer a preferred choice over ordinary Power distribution Transformer for urban and rural grids?

The Oil-immersed Power distribution transformer stands out as a high-performance option compared to ordinary Power distribution Transformer, especially for grids. Its low-loss design cuts 30%-40% of no-load/load loss, reducing long-term operational costs—an advantage ordinary Power distribution Transformer rarely match. As an Oil-immersed Power distribution transformer, it uses sealed oil insulation for superior heat dissipation and harsh environment resistance, ensuring stable operation in urban and rural scenarios. Unlike dry-type Power distribution Transformer, this Oil-immersed Power distribution transformer also features low noise (≤50dB(A)) and strong short-circuit resistance, making it adaptable to noise-sensitive and complex grid environments, thus becoming a reliable Power distribution Transformer for diverse power supply needs.

Can it be used in high-altitude or cold regions?

Standard design is suitable for altitude ≤1000m and ambient temperature ≥-25°C. For altitudes above 1000m, derating or customized insulation design is required. For cold regions, customization down to -40°C is available.

Do you provide on-site installation and commissioning services?

Yes. We can dispatch experienced engineers for on-site installation guidance, commissioning, and operator training. Remote technical support is also available 24/7.

How to choose the connection group? What is the difference between Yyn0 and Dyn11?

Yyn0 is suitable for distribution scenarios with basically balanced three-phase loads. Dyn11 is suitable for scenarios with more single-phase loads and higher harmonic content, with stronger resistance to unbalanced loads. Please select based on actual load characteristics.

Know your supplier

Vziman

Zhejiang Vziman Electric Group Co., Ltd.
14yrs 100-500 10000+m² US$150000000+ China

Online store

On-time delivery rate

Response time

100.0%

≤4h

Company overview

Workplace: 10000m² Total staff: 300 Highest Annual Export(usD): 150000000

Services

Business Type: Design/Manufacture/Sales

Main Categories: Medium and High Voltage Switchgear/Lighting and Monitoring Equipment/Power and Distribution Transformers/IT and AI Support Equipment/Lightning Protection and Electrical Insulation/Substations and E-Houses/Power Electronic Equipment/Electrical Panel and Controlgear

$12400.00

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Model

S22-12/1250

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Whole life care manager

Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.

The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.