

S13-M.RL/S11-M.RL series hermetically sealed three-phase tridimensional toroidal-core transformer produced by our company is different from the traditional winding core transformer. The core is made up of three identical single-frames according to tridimensional triangle structure, each single-frame is continuous rolled by high quality core-rolled silicon steel strips, strip width is cut as straight and curve by NC cutting machine. High-voltage and low-voltage windings are rolled directly on core column by special-purpose winding machine, overall structure is solid and compact.
◆ Three-phase three-limb symmetrical structure is the most balanced three-phase magnetic circuit. The magnetic circuit is completely symmetrical, the length is shortest and equal, and three-phase no-load current is completely balanceable, which do not generate third harmonic wave and ensure the quality of supply waveform. Because of the excellent materials of winding core and processing characteristics of wind, not only the no-load loss is small, but also no-load current and noise are obviously reduced.
◆ The body of transformer is tridimensional triangular prism shape.The center and periphery have tensile rods. The body is integrated with upper and lower iron yoke and laminated wood, which can effectively resist the axial and radial mechanical stress under sudden short-circuit current.
◆ The transformer has the advantages: Compact structure, small occupied area, saving installation space, convenient installation and maintenance.
| Rated Capacity (KVA) | Voltage Combination and Tapping Range (KV) | Connection Symbol | No-Load Loss (W) | Load Loss (W) | No-Load Current (%) | Short-Circuit Impedance (%) | ||
| High-Voltage | High-Voltage Tapping Range | Low-Voltage | ||||||
| 30 | 6 6.3 10 1.5 11 | ±5% | 0.4 | Dyn11 Yzn11 Yyn0 | 80 | 630/600 | 0.30 | 4.0 |
| 50 | 100 | 910/870 | 0.24 | |||||
| 63 | 110 | 1090/1040 | 0.23 | |||||
| 80 | 130 | 1310/1250 | 0.22 | |||||
| 100 | 150 | 1580/1500 | 0.21 | |||||
| 125 | 170 | 1890/1800 | 0.20 | |||||
| 160 | 200 | 2310/2200 | 0.19 | |||||
| 200 | 240 | 2730/2600 | 0.18 | |||||
| 250 | 290 | 3200/3050 | 0.17 | |||||
| 315 | 340 | 3830/3650 | 0.16 | |||||
| 400 | 410 | 4520/4300 | 0.16 | |||||
| 500 | 480 | 5410/5150 | 0.16 | |||||
| 630 | 570 | 6200 | 0.15 | 4.5 | ||||
| 800 | 700 | 7500 | 0.15 | |||||
| 1000 | 830 | 10300 | 0.14 | |||||
| 1250 | 970 | 12000 | 0.13 | |||||
| 1600 | 1170 | 14500 | 0.12 | |||||
Notes: