T: +86-180-67981129
E:sales@pino-electric.com
E:sales@pino-electric.com
Makou Industrial Park, Yongxiu County, Jiujiang city, Jiangxi Province, China
The Pino Electric PN-S11 500kVA oil-immersed transformer is a high-efficiency, fully sealed power distribution transformer engineered for 6kV/10kV/11kV/20kV, 50Hz power transmission and distribution systems. As a core product in our S11 series, it combines premium materials with advanced manufacturing technologies to deliver industry-leading low loss, low noise, and reliable performance.
Widely trusted by industrial, commercial and utility customers worldwide, this transformer is ideal for power and lighting supply in residential complexes, commercial streets, industrial and mining enterprises, and rural power grids. Pino Electric, a specialized power transformer manufacturer with extensive industry experience, has supplied over 10,000 S11 series transformers to customers across 30+ countries, ensuring consistent quality and long-term operational stability.
Feature: Premium grade cold-rolled silicon steel core with optimized laminated structure
Technical Data: 680W no-load loss and 5100W load loss (10kV model)
Business Value: Cuts annual electricity costs by up to 32% compared to traditional S9 series transformers, delivering full return on investment within 3-5 years of operation
Feature: Hermetically sealed construction with corrugated oil tank, eliminating contact between transformer oil and external air
Benefit: Prevents oil contamination, moisture ingress and insulation degradation
Business Value: Extends service life to 30+ years, eliminates the need for regular oil changes and reduces annual maintenance costs by 70%
Feature: Specially designed high-strength winding configuration with reinforced mechanical structure
Benefit: Withstands sudden short-circuit currents without structural damage
Business Value: Minimizes unplanned downtime and protects expensive downstream electrical equipment from power surges
Feature: Innovative core clamping structure, optimized winding arrangement and advanced noise damping technology
Benefit: Operational noise levels below 55dB at 1 meter distance
Business Value: Suitable for noise-sensitive environments such as hospitals, schools, residential areas and commercial centers
Feature: Fully sealed construction with accessible inspection points and modular components
Benefit: No routine maintenance required for the first 5 years of operation
Business Value: Reduces operational disruptions and eliminates the need for specialized on-site maintenance teams
Model number | Rated capacity | Join group label | Voltage combination>(kV) | No-load loss | Load loss | No-load current | Short circuit impedance | Dimensions(mm) | Weight(kg) | Gauge | |||||
kVA | Yyn0 or Dyn11 | High tension | Tapping range | Low pressure | W | W | % | % | L | W | H | Oil | Weight | mm | |
S11-M-30 | 30 | 6 6.3 10 10.5 11 | ±5% or ±2×2.5% | 0.4 | 100 | 600 | 2.3 | 4.0 | 740 | 665 | 875 | 74 | 283 | 400*500 | |
S11-M-50 | 50 | 130 | 870 | 2.0 | 4.0 | 770 | 675 | 965 | 88 | 362 | 400*500 | ||||
S11-M-63 | 63 | 150 | 1040 | 1.9 | 4.0 | 820 | 700 | 1020 | 112 | 442 | 450*500 | ||||
S11-M-80 | 80 | 180 | 1250 | 1.9 | 4.0 | 835 | 705 | 1040 | 117 | 481 | 450*500 | ||||
S11-M-100 | 100 | 200 | 1500 | 1.8 | 4.0 | 850 | 715 | 1055 | 122 | 520 | 450*500 | ||||
S11-M-125 | 125 | 240 | 1800 | 1.7 | 4.0 | 1180 | 740 | 1115 | 154 | 667 | 500*500 | ||||
S11-M-160 | 160 | 280 | 2200 | 1.6 | 4.0 | 1225 | 775 | 1175 | 176 | 788 | 500*500 | ||||
S11-M-200 | 200 | 340 | 2600 | 1.5 | 4.0 | 1245 | 790 | 1195 | 193 | 898 | 500*500 | ||||
S11-M-250 | 250 | 400 | 3050 | 1.4 | 4.0 | 1340 | 880 | 1230 | 209 | 1027 | 550*500 | ||||
S11-M-315 | 315 | 480 | 3650 | 1.4 | 4.0 | 1425 | 935 | 1260 | 234 | 1177 | 550*500 | ||||
S11-M-400 | 400 | 570 | 4300 | 1.3 | 4.0 | 1470 | 955 | 1330 | 265 | 1399 | 550*600 | ||||
S11-M-500 | 500 | 680 | 5100 | 1.2 | 4.0 | 1490 | 960 | 1405 | 283 | 1576 | 550*600 | ||||
S11-M-630 | 630 | 810 | 6200 | 1.1 | 4.5 | 1585 | 1030 | 1370 | 317 | 1771 | 660*660 | ||||
S11-M-800 | 800 | 980 | 7500 | 1.0 | 4.5 | 1675 | 1090 | 1480 | 366 | 2128 | 660*820 | ||||
S11-M-1000 | 1000 | 1150 | 10300 | 1.0 | 4.5 | 1775 | 1175 | 1530 | 402 | 2379 | 660*820 | ||||
S11-M-1250 | 1250 | 1360 | 12800 | 0.9 | 4.5 | 1965 | 1155 | 1700 | 542 | 3023 | 820*820 | ||||
S11-M-1600 | 1600 | 1460 | 14500 | 0.8 | 4.5 | 2055 | 1210 | 1800 | 616 | 3591 | 820*820 | ||||
Model number | Rated capacity | Join group label | Voltage combination (kV) | No-load loss | Load loss | No-load current | Short circuit impe dance | Model number | Rated capacity | Join group label | Voltage combination(kV) | No-load loss | Load loss | No-load current | Short circuit impe dance | ||||
kVA | Dyn11 | High tension | Tapping range | Low pressure | W | W | % | % | kVA | Dyn11 | High tension | Tapping range | Low pressure | W | W | % | % | ||
S11-M-30 | 30 | 20 | ±5% or ±2×2.5% | 0.4 | 90 | 660 | 2.1 | 5.5 | S11-M-315 | 315 | 20 | ±5% or ±2×2.5% | 0.4 | 480 | 4010 | 1.1 | 5.5 | ||
S11-M-50 | 50 | 130 | 960 | 2.0 | 5.5 | S11-M-400 | 400 | 570 | 4730 | 1.0 | 5.5 | ||||||||
S11-M-63 | 63 | 150 | 1145 | 1.9 | 5.5 | S11-M-500 | 500 | 680 | 5660 | 1.0 | 5.5 | ||||||||
S11-M-80 | 80 | 180 | 1370 | 1.8 | 5.5 | S11-M-630 | 630 | 810 | 6820 | 0.9 | 6.0 | ||||||||
S11-M-100 | 100 | 200 | 1650 | 1.6 | 5.5 | S11-M-800 | 800 | 980 | 8250 | 0.8 | 6.0 | ||||||||
S11-M-125 | 125 | 240 | 1980 | 1.5 | 5.5 | S11-M-1000 | 1000 | 1150 | 11330 | 0.7 | 6.0 | ||||||||
S11-M-160 | 160 | 290 | 2420 | 1.4 | 5.5 | S11-M-1250 | 1250 | 1350 | 13200 | 0.7 | 6.0 | ||||||||
S11-M-200 | 200 | 330 | 2860 | 1.3 | 5.5 | S11-M-1600 | 1600 | 1630 | 15950 | 0.6 | 6.0 | ||||||||
S11-M-250 | 250 | 400 | 3350 | 1.5 | 5.5 | ||||||||||||||
Note: The 20KV transformer can be according to customer requirements, the high voltage test can produce double voltage connection, the transformer input end can be easily converted according to the difference of the two voltages of the net hole 2OKV and 1OKV by using the transfer switch.
Our 500kVA oil transformers are designed to operate reliably in a wide range of environmental conditions:
Maximum ambient temperature: +40℃
Minimum ambient temperature: -25℃ (low-temperature models available for colder regions)
Altitude: <1000m above sea level (high-altitude models available up to 4000m)
Maximum monthly average relative humidity: 90% (at 20℃)
Installation location: Indoor or outdoor, free from fire, explosion hazards, severe pollution, chemical corrosion and violent vibration
The S11 500kVA oil-immersed transformer is versatile enough to meet the power distribution needs of diverse industries:
Industrial & Mining: Factories, manufacturing plants, mining operations, processing facilities and heavy industrial equipment
Commercial: Shopping malls, office buildings, hotels, hospitals, schools and data centers
Residential: Large apartment complexes, residential communities and housing estates
Rural Power Grids: Reliable power distribution for rural areas, agricultural facilities and remote locations
Infrastructure: Substations, renewable energy projects (solar/wind), transportation systems and public utilities
With over 15 years of specialized experience in power transformer manufacturing, Pino Electric has built a reputation for delivering high-quality, reliable products. Our engineering team consists of 20+ certified electrical engineers with an average of 10 years of industry experience, ensuring every transformer meets the highest technical standards.
All our transformers undergo 12+ rigorous testing procedures before shipment, including:
Winding resistance test
Voltage ratio test
Insulation resistance test
No-load loss and load loss test
Impulse voltage test
Short-circuit test
Our products are certified to CE, IEC 60076 and ISO 9001 standards, ensuring compliance with international safety and performance requirements. We also offer custom certification services for specific regional markets.
We understand that every project has unique requirements. We provide full customization services including:
Custom voltage ratings and tapping ranges
Special connection groups
Enhanced corrosion protection for coastal areas
Custom paint colors and branding
Additional monitoring and protection devices
Fast delivery: 7-15 days for standard models, 20-30 days for custom orders
Global technical support: Our engineers are available 24/7 to provide remote assistance
On-site installation and commissioning services available
Comprehensive warranty coverage and spare parts supply
Factory direct pricing with no middleman markup
Yyn0 connection is suitable for balanced three-phase loads and provides a neutral point for single-phase loads. Dyn11 connection offers better phase-to-phase fault protection, reduces harmonic distortion and is recommended for unbalanced loads and industrial applications.
Yes, we manufacture S11 500kVA transformers for 20kV systems with a short circuit impedance of 5.5%. These transformers can also be equipped with a transfer switch to support both 20kV and 10kV input voltages.
Standard models are usually in stock and can be shipped within 7-15 days. Custom orders typically take 20-30 days depending on the specific requirements.
Yes, we provide OEM and ODM services for customers worldwide. We can manufacture transformers under your brand name and customize packaging and documentation to meet your requirements.
