S11/S13 Full Sealed Oil-Filled Electric Pole Transformer is specifically designed to fulfill high efficiency and long life needs of power distribution. The transformer is manufactured in compliance with Chinese GB specifications as well as international IEC specifications. The transformer employs the use of oil not only as insulation but also as the cooling medium. It is constructed using efficient cooling methods such as oil-immersed natural cooling, air cooling, water cooling, and forced oil circulating to provide reliable performance in extreme conditions.
Major Components:
Iron Core: Laminated using high-quality cold-rolled silicon steel in order to reduce no-load losses and noise.
Windings: Low and high-voltage windings of oxygen-free copper. Low voltage windings for equipment up to 500 kVA employ double-layer cylindrical shape while equipment above 630 kVA employ double or four-helix configurations. High voltage windings employ multilayer cylindrical for enhanced performance.
Oil Pillow & Breathing Apparatus: Maintains oil level and air pressure balance while providing integrity to the insulation.
Explosion-Proof Tube (Pressure Release Valve): A safety feature that maintains transformer integrity under severe conditions.
Radiator & Insulating Casing: Encourages heat radiation and insulation efficiency for long service life.
Gas Relay, Tap Switch & Thermometer: Integrated for monitoring and adjustment of operating parameters.
Product Features:
- Low Loss, High Efficiency: S11 series transformers are designed to provide maximum energy-saving performance with minimal loss and noise. Its high efficiency provides long-term running, lower operation costs, and less environmental impact.
- Enhanced Core Design: The core uses imported cold-rolled silicon steel sheets, actually reducing no-load loss and current, and minimizing the noise level.
- Long-Term, Maintenance-Free Operation: Fully sealed, oil-immersed design keeps the transformer maintenance-free. Sealed setup prevents oil deterioration and insulation aging, leaving the transformer in good condition for many years to come.
- Harmonic Reduction: Using the Dyn11 connection group, the transformer suppresses the impact of harmonics on the power grid, ensuring a clean, stable power supply.
- Silent Operation: The transformer shall have noise levels lower than the standard and will therefore operate quietly in urban and industrial surroundings.
Model meaning
| Model | S□-M xxxx/xx | |||
| S | □ | M | xxxx | xx |
| Three-phase | Performance level code | Fully sealed | Rated capacity (kVA) | Rated high voltage (kV) |
The main technical parameters
| Type | Rated Capacit | Voltage Combination | nSymbol | No-Load Loss(kw) | Load Loss(kw) | No-Load Current(%) | Circuit Impedance | ||
| HV | Tapping | LV | |||||||
| S11-M-30/10 | 30 | 66.31010.511 | (±5%)(±2*2.5%) | 0.4 | Yyn0Yzn11Dyn11 | 0.10 | 0.60 | 1.4 | 4 |
| S11-M-50/10 | 50 | 0.13 | 0.87 | 1.3 | 4 | ||||
| S11-M-63/10 | 63 | 0.15 | 1.04 | 1.2 | 4 | ||||
| S11-M-80/10 | 80 | 0.18 | 1.25 | 1.1 | 4 | ||||
| S11-M-100/10 | 100 | 0.20 | 1.50 | 1.1 | 4 | ||||
| S11-M-125/10 | 125 | 0.24 | 1.80 | 1.0 | 4 | ||||
| S11-M-160/10 | 160 | 0.28 | 2.20 | 0.9 | 4 | ||||
| S11-M-200/10 | 200 | 0.34 | 2.60 | 0.9 | 4 | ||||
| S11-M-250/10 | 250 | 0.40 | 3.05 | 0.8 | 4 | ||||
| S11-M-315/10 | 315 | 0.48 | 3.65 | 0.8 | 4 | ||||
| S11-M-400/10 | 400 | 0.57 | 4.30 | 0.8 | 4 | ||||
| S11-M-500/10 | 500 | 0.68 | 5.15 | 0.7 | 4 | ||||
| S11-M-630/10 | 630 | 0.81 | 6.20 | 0.7 | 4.5 | ||||
| S11-M-800/10 | 800 | 0.98 | 7.50 | 0.6 | 4.5 | ||||
| S11-M-1000/10 | 1000 | 1.15 | 10.30 | 0.6 | 4.5 | ||||
| S11-M-1250/10 | 1250 | 1.36 | 12.00 | 0.5 | 4.5 | ||||
| S11-M-1600/10 | 1600 | 1.64 | 14.50 | 0.5 | 4.5 | ||||
| S11-M-2000/10 | 2000 | 2.24 | 18.50 | 0.5 | 4.5 | ||||
| S11-M-2500/10 | 2500 | 2.65 | 23.00 | 0.4 | 5 | ||||
| Type | Rated Capacit | Voltage Combination | nSymbol | No-Load Loss(kw) | Load Loss(kw) | No-Load Current(%) | Circuit Impedance | ||
| HV | Tapping | LV | |||||||
| S11-50/35 | 50 | 35 | (±5%)(±2*2.5%) | 0.4 | Yyn0Dyn11 | 0.17 | 1.25 | 1.4 | 6.5 |
| S11-80/35 | 80 | 0.22 | 1.65 | 1.3 | 6.5 | ||||
| S11-100/35 | 100 | 0.24 | 2.03 | 1.25 | 6.5 | ||||
| S11-125/35 | 125 | 0.27 | 2.35 | 1.2 | 6.5 | ||||
| S11-160/35 | 160 | 0.31 | 2.82 | 1.2 | 6.5 | ||||
| S11-200/35 | 200 | 0.36 | 3.30 | 1.1 | 6.5 | ||||
| S11-250/35 | 250 | 0.42 | 3.90 | 1.0 | 6.5 | ||||
| S11-315/35 | 315 | 0.49 | 4.70 | 1.0 | 6.5 | ||||
| S11-400/35 | 400 | 0.6 | 5.70 | 0.9 | 6.5 | ||||
| S11-500/35 | 500 | 0.7 | 6.90 | 0.9 | 6.5 | ||||
| S11-630/35 | 630 | 0.82 | 8.20 | 0.8 | 6.5 | ||||
| S11-800/35 | 800 | 1.0 | 10.00 | 0.7 | 6.5 | ||||
| S11-1000/35 | 1000 | 1.17 | 12.00 | 0.7 | 6.5 | ||||
| S11-1250/35 | 1250 | 1.43 | 14.00 | 0.6 | 6.5 | ||||
| S11-1600/35 | 1600 | 1.72 | 16.50 | 0.6 | 6.5 | ||||
| S11-2000/35 | 2000 | 2.14 | 18.50 | 0.5 | 6.5 | ||||
| S11-2500/35 | 2500 | 2.65 | 20.24 | 0.5 | 6.5 | ||||
Applications
The transformer is ideal for a wide range of applications like power supply in high-rise buildings, commercial centers, subways, airports, stations, industrial parks, drilling platforms, and oil producing facilities. Owing to its rugged design, it is especially designed for operation in flammable, explosive, or other hostile environments where reliability is a matter of supreme concern.
Product Standards
- GB1094.1-2-2013
- GB/T 6451-2015
- Rated High Voltage: 10kV (with 10.5, 11, 6, 6.3, 6.6 kV options as well)
- Rated Low Voltage: 0.4 kV
- Tap Range: Non-excitation voltage regulation (±5%, ±2×2.5%)
- On-load Voltage Regulation: ±4×2.5%
- Connection Group: Dyn11 or Yyn0
- Insulation Level: LI75AC35/AC5
- Applicable Environment:
- High Ambient Temperature: For use in environments where the temperature of the environment is up to +40°C.
- Low Ambient Temperature: Operates effectively in temperatures down to -25°C.
- Altitude: Compatible with installations at altitudes up to 1000m.
- Humidity: Can operate in areas with a monthly average relative humidity of up to 90% at 20°C.
- Installation Locations: Ideally designed for indoor and outdoor installation in areas removed from fire hazard, explosive risk, chemical corrosive atmosphere, and harsh vibration. The transformer can withstand unfavorable environments and functions best under circumstances with high requirements for safety.
Why Choose the S11/S13 Transformer?
- Energy-Efficient: Reduces energy loss and operation costs, with long-term advantages.
- Environmentally Friendly: The close sealed construction avoids deterioration and contamination of oil, resulting in a cleaner and greener power distribution system.
- High Durability and Safety: Built to work under harsh operating conditions, this transformer is ideal for industry, commercial installations, and areas with st
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