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S9 Oil Immersed Transformer

S9 series oil-immersed distribution transformers are classic and reliable power distribution equipment widely used in global power grid systems. Featuring stable performance, low noise, reasonable loss rate and strong overload capacity, this conventional oil-filled transformer adopts mature manufacturing technology and off-circuit tap regulation design. Cost-effective and fully compliant with IEC international standards, it is ideal for urban and rural power grids, industrial plants, residential areas and general power distribution projects.

Classification :

Oil-lmmersed Power Transformer

keywords :

Oil-lmmersed Power Transformer

PRODUCT DETAILS

Product Description

S9 series oil-immersed distribution transformers are classic and reliable power distribution equipment widely used in global power grid systems. Featuring stable performance, low noise, reasonable loss rate and strong overload capacity, this conventional oil-filled transformer adopts mature manufacturing technology and off-circuit tap regulation design. Cost-effective and fully compliant with IEC international standards, it is ideal for urban and rural power grids, industrial plants, residential areas and general power distribution projects.

Core Features

- Mature & Stable Performance: Adopts decades of mature manufacturing technology, stable electromagnetic performance, extremely low operational failure rate, high safety and reliability.

- Optimized Energy-saving Design: Lower no-load and load loss than traditional old-type transformers, effectively reducing long-term operating power consumption.

- Strong Overload Capacity: Reasonable winding and core structure design, supports short-time overload operation and adapts to daily load fluctuations.

- Low Operating Noise: Standard core lamination process and structural optimization, low vibration and low noise during operation, meeting public area usage requirements.

- Flexible Voltage Regulation: Equipped with ±2×2.5% off-circuit manual tap changer, convenient for on-site voltage adjustment to guarantee stable power supply.

- Good Environmental Adaptability: Standard oil-immersed sealed structure, waterproof, dust-proof and anti-corrosion, suitable for indoor and outdoor long-term operation.

- High Cost Performance: Reasonable price, simple maintenance, long service life, ideal for budget-friendly conventional power distribution projects.

Details Table

Technical Item

Standard Specification

Unit

Remarks

Product Model

S9 / S9-M Fully Sealed Type

-

Classic conventional distribution transformer

Rated Capacity

30 ~ 2500

kVA

Full range of conventional capacities

High Voltage Level (HV)

6 / 10 / 20 / 35

kV

General medium voltage distribution grade

Low Voltage Level (LV)

0.4 / 0.69 / 10.5

kV

0.4kV standard for civil & industrial power

Frequency

50 / 60

Hz

Suitable for global power grid systems

Vector Group

Dyn11 / Yyn0

-

Stable three-phase power balance

Tap Adjustment Range

±2×2.5%

-

Off-circuit manual tap changer standard

Cooling Method

ONAN

-

Oil Natural Air Natural cooling

Short-circuit Impedance

4.0% ~ 6.5%

%

Matches conventional grid standards

No-load Current

0.8% ~ 1.5%

%

Stable magnetizing performance

Operating Noise

≤58

dB

Low noise for public scenarios

Insulation Level

10kV/35kV Grade

-

Meets IEC insulation requirements

Service Life

Up to 25

Years

Long-term stable operation

Executive Standard

IEC 60076, GB/T 6451

-

International industrial standard

Customer visit

Application Areas


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