Single-Phase Oil Immersed Distribution Transformer
HSLEC designs and manufactures a complete line of single phase oil immersed distribution transformers. These highly reliable power transformers are produced in a wide variety of ratings and accessory combinations.
We utilize state-of-the-art technology in our design and manufacturing systems, supported by our ISO-9001 certified processes and quality assurance programs, to provide reliable and cost-effective power distribution components.
Optional Features & Accessories
1. Broad selection of design efficiencies to meet specific customer applications and DOE minimum requirements.
2. Automatic pressure relief valve.
3. High-voltage taps with external tank mounted no load tap changer.
4. Dual high-voltage ratings (not available with taps).
5. Drain and sampling valve.
6. Connectors for grounding.
7. Stencils and labels according to customer requirements.
8. External tank mounted high-voltage lightning arrester.
9. Low-voltage circuit breaker with reset (and optional overload signal light).
10. Internal high-voltage expulsion fuse.
11. Under-oil arrester.
12. External low-voltage surge arrester. 13. Interlaced secondary windings (through 50 kVA ratings).
14. RUS compliant 1 bushing designs with double hanger bracket configuration (through 50 kVA).
15. Stainless steel tank, cover, clamping band.
16. Extra creep options for high-voltage bushings.
17. Variety of features available for wildlife protection.
Routine tests
1. Leak test.
2. Polarity and phase relation.
3. Resistance.
4. No-load losses and excitation current.
5. Load losses and impedance.
6. Applied voltage.
7. Induced voltage.
8. Full wave impulse.
9. Ratio test.
| Rated Capacity | Vector Group | Voltage Combination kV | No-load Current | No-load Loss | Load Loss | Short-circuit Impedance | ||
| High Voltage | High Pressure Regulating Range | Low Voltage | ||||||
| H.V. | % | L.V. | % | W | (75 ℃ ) W | % | ||
| 5 | II 0 | 10 | ±2X2.5% | 2X0.24 | 4 | 35 | 145 | 3.5 |
| 10 | 3.5 | 55 | 260 | |||||
| 16 | 3.2 | 65 | 365 | |||||
| 20 | 3 | 80 | 430 | |||||
| 30 | 2.8 | 100 | 625 | |||||
| 40 | 2.5 | 125 | 775 | |||||
| 50 | 2.3 | 150 | 950 | |||||
| 63 | 2.1 | 180 | 1135 | |||||
| 80 | 2 | 200 | 1140 | |||||
| 100 | 1.9 | 240 | 1650 | |||||
