Product Overview
The S20-M is a three-phase, fully sealed oil-immersed power transformer. The technical schedule below covers S20-M models from 30 to 2,500 kVA in the 10 kV class, with loss and short-circuit impedance data for each listed rating.
Model Designation
In S20-M, S identifies the three-phase design, 20 is the performance-level designation, and M identifies the fully sealed construction. The model suffix specifies the rated capacity in kVA and voltage class in kV.
Technical Range
| Parameter | Technical Data |
|---|---|
| Listed rated capacities | 30–2,500 kVA |
| Listed voltage class | 10 kV class, as shown by the /10 model designations |
| Construction | Three-phase, fully sealed, oil-immersed |
| Voltage ratio and connection | Confirm for the selected model and project |
S20-M Loss and Impedance Data
| Model | No-load Loss (kW) | Load Loss (kW) | Short-Circuit Impedance (%) | |
|---|---|---|---|---|
| Dy11 / Yzn11 | Yyn0 | |||
| S20-M-30/10 | 0.07 | 0.505 | 0.48 | 4.0 |
| S20-M-50/10 | 0.09 | 0.73 | 0.695 | 4.0 |
| S20-M-63/10 | 0.1 | 0.87 | 0.83 | 4.0 |
| S20-M-80/10 | 0.115 | 1.05 | 1 | 4.0 |
| S20-M-100/10 | 0.135 | 1.265 | 1.2 | 4.0 |
| S20-M-125/10 | 0.15 | 1.51 | 1.44 | 4.0 |
| S20-M-160/10 | 0.18 | 1.85 | 1.76 | 4.0 |
| S20-M-200/10 | 0.215 | 2.185 | 2.08 | 4.0 |
| S20-M-250/10 | 0.26 | 2.56 | 2.44 | 4.0 |
| S20-M-315/10 | 0.305 | 3.065 | 2.92 | 4.0 |
| S20-M-400/10 | 0.37 | 3.615 | 3.44 | 4.0 |
| S20-M-500/10 | 0.43 | 4.33 | 4.12 | 4.0 |
| S20-M-630/10 | 0.51 | 4.96 | 4.5 | |
| S20-M-800/10 | 0.63 | 6 | 4.5 | |
| S20-M-1000/10 | 0.745 | 8.24 | 4.5 | |
| S20-M-1250/10 | 0.87 | 9.6 | 4.5 | |
| S20-M-1600/10 | 1.05 | 11.6 | 4.5 | |
| S20-M-2000/10 | 1.225 | 14.64 | 5.0 | |
| S20-M-2500/10 | 1.44 | 14.84 | 5.0 | |
For S20-M-1000/10, the listed no-load loss is 0.745 kW, the load loss is 8.24 kW and the short-circuit impedance is 4.5%.
The connection labels and merged load-loss cells follow the product brochure. Confirm the selected connection, voltage ratio, test reference conditions and guaranteed values in the approved technical schedule. All loss values in this table are expressed in kW.
Information for a Quotation
Send the required rated capacity, primary and secondary voltages, frequency, connection, quantity, installation environment and project location. Confirm the oil specification, accessories, dimensions and scope of supply before ordering.
Installation and Maintenance
Installation, inspection and any work on the fully sealed oil system must follow the manufacturer’s operation and maintenance instructions and applicable site requirements. Inspection and testing must be planned and carried out by qualified personnel.
