S-M-1600kVA Oil-immers Transformer

Product advantages

1.Grade C4 Anti-Corrosion
Adopts Grade C4 high-standard anti-corrosion coating, resistant to high humidity, salt spray, and chemical corrosion. Ideal for chemical plants, coastal areas, and high-pollution industrial environments, significantly extending equipment service life.

2.Fully Sealed Maintenance-Free Structure
Fully sealed tank design isolates air and moisture, preventing insulation oil from oxidation and dampness. No routine oil sampling required, achieving true maintenance-free operation and reducing labor and operating costs.

3.Dyn11 Connection Group
Delta connection on HV side effectively suppresses third harmonics; star connection with neutral point on LV side handles 100% unbalanced load, suitable for various non-linear load scenarios.

4.Wide-Range Off-Circuit Tap Changer
Equipped with ±2×2.5% off-circuit tap changer on HV side, total regulation range of ±5%, flexibly adapting to grid voltage fluctuations and ensuring stable LV side output voltage.

5.1600kVA High Capacity Design
Rated at 1600kVA, meeting the centralized power distribution needs of large factories, commercial complexes, residential communities, and renewable energy projects. High power density with wide coverage per unit.

6.Dual Standard Compliance
Complies with both GB/T 6451 (national standard) and IEC 60076 (international standard), meeting domestic and international project bidding requirements for seamless export and domestic sales.

7.Optional High Energy Efficiency Level
Available with GB 20052-2020 Level 1 or Level 2 energy efficiency as project required, significantly reducing no-load and load losses for outstanding life-cycle energy savings.

Factory workshop

Factory production capacity: Annual output of 12000 transformers

Assembly: 6 cutting lines, 15 winding machines, 5 coiling machines

Test: 220kV Test Hall Transformer Test Center

Shipment: Fully automatic crane equipment

Addressing pain points for product customers

Pain Point 1: Short Lifespan in Corrosive Environments

Customer Pain:

In chemical plants and coastal areas, ordinary transformers rust and leak within 2-3 years – high replacement costs and production downtime.

Solution: Grade C4 Anti-Corrosion Coating

Salt spray & acid/alkali resistant, uniform and dense coating – extends service life, reduces replacement frequency.

Pain Point 2: Three-Phase Unbalance Causes Tripping

Customer Pain:

Commercial complexes and residential areas have many single-phase loads. Severe unbalance causes overheating and frequent tripping.

Solution: Dyn11 Connection

Handles 100% unbalanced load, suppresses third harmonics – stable operation, no tripping.

Pain Point 3: Voltage Fluctuations Damage Equipment

Customer Pain:

In remote areas or grid endpoints, frequent voltage fluctuations. Narrow regulation range fails to protect downstream equipment.

Solution: ±5% Wide-Range Tap Changer

±2×2.5% off-circuit tap changer, 5 positions – manually adjustable after power-off, ensuring stable output voltage.

Pain Point 4: Frequent Maintenance, High Labor Costs

Customer Pain:

Ordinary transformers require regular oil sampling, refilling, and breather replacement – especially costly for remote sites.

Solution: Fully Sealed – Maintenance Free

Isolates air and moisture – no oil sampling, no refilling – truly maintenance-free operation.

Customer reviews

	Senior Electrical Engineer, Michael Tan,Thailand "Our plant is located in an industrial zone with high humidity and chemical exposure. Ordinary transformers would show rust within a year. This S-M-1600/22-0.4 with Grade C4 anti-corrosion treatment has been running for 18 months now – no signs of corrosion, no performance drop. The Dyn11 connection also handles our unbalanced loads well. Excellent product for harsh environments."
	Project Manager, Carlos Mendez, Philippines "We needed a transformer that requires minimal maintenance for our remote solar farm. The fully sealed design of this unit means no oil sampling, no air exposure – just install and forget. After 14 months of operation in hot and humid conditions, it's working perfectly. Highly recommended for renewable energy projects."
	Utility Operations Manager, Ahmad Rizki,Nigeria "Grid voltage fluctuation is a major challenge in our region. The ±5% off-circuit tap changer on this transformer gives us the flexibility we need. We've installed three units so far, and they've handled voltage swings without any issues. Solid build quality, good compliance with IEC standards. Will definitely order more."
	Facility Manager,David Omondi, Vietnam "We replaced two older transformers with this 1600kVA unit. It handles our HVAC, lighting, and elevators with ease. Voltage is stable, noise level is low, and the price was very competitive compared to other brands. The delivery was on time, and the technical documentation was clear. Very satisfied."
	Procurement Manager, James Reyes, Middle East "We specify IEC 60076-compliant transformers for all our projects. This model meets that requirement perfectly. The C4 coating is essential for our coastal project sites. We've used 5 units across two projects, and the client feedback has been positive. Good lead time and responsive support. A reliable choice for international tenders."

Product Display Image

S-M-1600/22-0.4 Oil-Immersed Power Transformer - Application Scenarios

Scenario 1: Chemical Plants

Chemical plants have highly corrosive environments. Acidic/alkaline gases and high humidity can easily cause transformer enclosure rust and insulation aging. Ordinary transformers have short service life and high failure rates, affecting production continuity.

Why Choose S-M-1600/22-0.4:

Grade C4 anti-corrosion coating resists acid, alkali, and chemical corrosion, extending service life

Fully sealed tank design isolates corrosive gases and moisture

Maintenance-free operation eliminates routine oil sampling, reducing operating costs

Dyn11 connection handles unbalanced loads, ensuring stable operation of production equipment

Scenario 2: Coastal Substations

Coastal areas have high humidity and heavy salt spray. Metal parts of ordinary transformers are prone to rust, insulation performance degrades, and equipment service life is significantly shortened.

Why Choose S-M-1600/22-0.4:

Grade C4 salt spray resistant coating effectively resists salt spray corrosion

Fully sealed structure isolates humid air, preventing insulation from moisture

No oil sampling required reduces manual maintenance frequency

1600kVA high capacity meets power supply needs of substation auxiliary equipment

Scenario 3: Commercial Complexes

Commercial complexes have various loads including HVAC, lighting, elevators, and catering, resulting in severe three-phase unbalance and harmonic interference. Ordinary transformers have high heat generation and noise levels, affecting user experience.

Why Choose S-M-1600/22-0.4:

Dyn11 connection effectively suppresses third harmonics, handles 100% unbalanced load

1600kVA high capacity meets full-load power demand of shopping malls

The fully sealed structure ensures low operating noise and does not affect the commercial environment

Maintenance-free design reduces property management workload

Scenario 4: Renewable Energy Grid Connection Projects

Solar and wind farms are often located in remote or coastal areas with significant grid voltage fluctuations, requiring high adaptability and reliability from transformers.

Why Choose S-M-1600/22-0.4:

22kV/0.4kV voltage rating perfectly matches renewable energy grid connection requirements

±2×2.5% off-circuit tap changer adapts to grid voltage fluctuations

Grade C4 anti-corrosion suits outdoor and harsh coastal environments

Fully sealed & maintenance-free reduces operating costs at remote sites

Transit CTA

Does your project need a corrosion-resistant, maintenance-free distribution transformer?

Our S-M-1600/22-0.4 fully sealed oil-immersed power transformer features Grade C4 anti-corrosion treatment and complies with GB/T 6451 and IEC 60076 standards. It provides safe and stable 0.4kV low-voltage power distribution for chemical plants, coastal substations, commercial complexes, and renewable energy projects.

certification

4-2025 Intellectual Property Management Certification

6-KERI (Korean Certificate) watermark

7-E529552- Watermark on UL Certification Certificate and UL Listd Trademark Authorization Letter in the United States

8-E529552-2025033-UL watermark

CE certification certificate - (SCB series dry-type transformer) VoC_HS260135 

CE Certification Certificate - (ZL1448) VoC_HS260134

Parameter (Unit)

Related Products

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FAQ

1.What are the main application scenarios for this transformer?
Suitable for 22kV distribution networks, providing 0.4kV low-voltage power supply for various scenarios.

2.What are the benefits of C4 anti-corrosion treatment?
It resists high humidity, salt spray, and chemical corrosion, making it suitable for chemical plants, coastal areas, and high-pollution industrial environments.

3.What is the connection group?
Dyn11.

4.What is the voltage regulation range?
±2×2.5%, which is an off-circuit tap changer (requires power-off operation).

5.Does it require regular maintenance?
With a fully sealed structure, it isolates air and moisture, slows oil degradation, and enables maintenance-free operation.

6.What standards does it comply with?
Complies with GB/T 6451 (national standard) and IEC 60076 (international standard).

7.What is the energy efficiency level?
Can provide GB 20052-2020 Level 1 or Level 2 energy efficiency as required, subject to confirmation at the time of purchase.