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S11 630kVA 10kV 400V Dyn11 Connection 3Phase Oil Immersed NLTC Distribution Transformer

5 0 Reviews
Number of Phase:Three Phase
Winding Type:Two Winding
Winding Material:Aluminum / Copper
Rated Capacity:630kVA
High Voltage:6/10/11kV
Low Voltage:0.4kV
Tapping Range:±2×2.5%
Impedance Voltage:4.5%
No-Load Loss:0.81kW
Load Loss (75°C):6.2kW
No-Load Current:0.6%
Frequency:50/60Hz
Connection Group:Yyn0 / Dyn11
Cooling Method:ONAN
Insulation Class:A
Climatic Class:C2
Environmental Class:E2
Operation Altitude:≤1000m
  • S11-M-630/10

  • SHENGTE

Availability:
Quantity:

SHENGTE three phase oil immersed transformer uses oil as both the main insulation medium and the cooling agent. With a fully sealed tank, the oil is completely isolated from air, which means safer operation, higher reliability, and less day-to-day maintenance. SHENGTE’s NLTC distribution transformer adopts a laminated iron core design. This structure, common in quality oil distribution transformers, effectively lowers no-load loss and current. In real use, that makes a difference — for example, a 3 phase electric transformer running in a residential or industrial setting can cut energy waste while keeping stable performance. Put simply, our three phase distribution transformers or oil cooled distribution transformers are built for durability, efficiency, and long service life.


Features:

  • Short-Circuit Resistance: This 3-phase electric transformer’s windings are built with a low axial short-circuit force coil, so when the grid trips or currents spike, everything stays put. This design keeps it tight and handles the punch.

  • Structural Reliability: Inside the tank, there’s a sturdy support structure pressing the windings firmly. On any oil distribution transformer, keeping the windings locked in place like this is what makes it last decades.

  • Low Flux Density Design: The three-phase oil-immersed transformer’s iron core runs at low magnetic flux density, which reduces no-load losses and prevents saturation. Less energy wasted, fewer harmonics messing with your network.

  • Anti-Corrosion Fasteners: All bolts and nuts are made of 304 stainless steel. On a three-phase distribution transformer, keeping the fasteners clean and movable makes field maintenance way less stressful.

  • Sealing Durability: High-quality rubber sealing rings of the oil distribution transformer keep the oil completely isolated from air. This slows down oil oxidation and extends the life of the transformer.S11-1

Our Advantages:

  • Heat Dissipation Performance: The spiral coil with longitudinal oil ducts maintains the 3-phase electric transformer's cool operation even when running near full load on a hot day. Low magnetic leakage and strong mechanical support make it sturdy so that this three-phase oil-immersed transformer won’t sag or deform under stress.

  • Energy Efficiency: The SHENGTE three-phase oil-immersed transformer’s iron core is made of silicon steel sheets less than 0.35mm thick, giving high magnetic conductivity. That’s why a 3-phase electric transformer can cut the no-load loss and current.

  • Insulation Reliability: High-heat-resistant materials protect against overvoltage and overloads. On oil-cooled distribution transformers, it’s the difference between occasional trips and smooth operation for years.

  • Structural Durability: The tank is made from cold-rolled steel, treated with de-oiling, rust removal, phosphating, and coated with three-proof paint. SHENGTE 3-phase oil-immersed NLTC distribution transformer is solid and resists outdoor wear — whether it’s sun, rain, or dust.

  • Sealing Reliability: SHENGTE oil distribution transformer is equipped with high-quality rubber rings that seal the oil inside, keeping air and moisture out. This slows oil and insulation aging.

  • Safety: Fully sealed design keeps moisture and oxygen out, lowering operational risk. A simple thing, but in a three-phase distribution transformer feeding a busy neighborhood, it’s peace of mind you can literally feel.

  • Long Service Life: Premium oil, strong sealing, and tough construction combine to make a three-phase oil-immersed transformer that can last decades. Even if the temperature swings wildly or the load varies a lot, this oil-immersed transformer doesn’t complain.

  • Easy Maintenance: Sealed tanks and robust design mean fewer routine checks. SHENGTE's three-phase oil-immersed transformer can help save time and headaches over older units.

  • Strong Adaptability: SHENGTE 3-phase electric transformer is suitable for working outdoors, resists dust, rain, and humidity. Perfect for urban streets, small factories, or rural grids. Basically, the SHENGTE three-phase distribution transformer can be installed almost anywhere without worrying too much.


S11 Advantage


S11 Structure


Product Parameters


Model Description S11

Model Rated Capacity (KVA) Rated Voltage (KV)

Connection

Method

No-load Loss

(W)

Load Loss

(W)

No-load Current

(%)

Short Circuit

Impedance

(%)

High Voltage Voltage Regulation Range

Low Voltage

S11-M-30 30


6

6.3

10

10.5

11

±5%

±2×2.5%

0.4

Yyn0

Dyn11

100 630/600 1.5 4

S11-M-50

50 130 910/870 1.3 4

S11-M-63

63 150 1090/1040 1.2 4

S11-M-80

80 180 1310/1250 1.2 4

S11-M-100

100 200 1580/1500 1.1 4

S11-M-125

125 240 1890/1800 1.1 4

S11-M-160

160 280 2310/2200 1 4

S11-M-200

200 340 2730/2600 1 4

S11-M-250

250 400 3200/3050 0.9 4

S11-M-315

315 480 3830/3650 0.9 4

S11-M-400

400 570 4520/4300 0.8 4

S11-M-500

500 680 5410/5150 0.8 4

S11-M-630

630 810 6200 0.6 4.5

S11-M-800

800 980 7500 0.6 4.5

S11-M-1000

1000 1150 10300 0.6 4.5

S11-M-1250

1250 1360 12000 0.5 4.5

S11-M-1600

1600 1640 14500 0.5 4.5

S11-M-2000

2000 1940 18300 0.4 5

S11-M-2500

2500 2290 21200 0.4 5

S11-M-3150

3150 2730 24300 0.4 5

Drawing S11


Production Process


Production Process S11


Company Profile

Company

Factory


Certifications


Certification


Project Cases


Case

Customer


Exhibition


Exhibition


Packaging & Shipping


Packing & Delivery


FAQ About SHENGTE Three Phase Oil Immersed Transformer


Q1: What type of transformer is this?

A1: It’s a three-phase oil-immersed transformer. The oil provides both cooling and insulation, and the sealed tank keeps air out — a small thing, but it makes field life way easier.


Q2: Where can this 3-phase electric transformer be used?

A2: This 3-phase electric transformer is designed for a wide range of settings — city streets, industrial facilities, and rural power grids. It’s particularly handy where the power demand can swing a bit during the day.


Q3: How efficient and durable is this three phase distribution transformer?

A3: The laminated silicon steel core (<0.35mm thick) reduces no-load loss, while the spiral coil and oil ducts improve heat dissipation. Combined with stainless steel fasteners and a sturdy support structure, this NLTC distribution transformer runs efficiently and lasts for decades.


Q4: What about safety and maintenance?

A4: SHENGTE three-phase oil-immersed transformer is equipped with fully sealed oil, keeping air and moisture out, reducing insulation risks. High-quality sealing rings and corrosion-resistant bolts make routine checks simpler.


Q5: Are certifications, warranty, and OEM options available?

A5: Yes. We hold ISO9001 and CE certifications, provide IEC-standard test reports, and offer OEM/ODM services. Warranty is 12 months, and we can customize logos or markings if needed.


Q6: What are the payment, MOQ, and delivery details?

A6: MOQ is 1 set. Payment options include T/T, Western Union, PayPal, usually 30% advance and 70% before shipment. Delivery generally takes 20–30 days, depending on quantity. Packaging is a wooden case, or customized if requested — which comes in handy for coastal or humid shipments.


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Guangdong Shengte Electric Co., Ltd. is located in Danzao Town, Nanhai District, Foshan City.

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