Dry Type Transformers Technical Requirements

Dry type transformer is an important power equipment. Generally speaking, many functions of dry-type transformer require certain technology as support, so that the performance and function of dry-type transformer can be fully exerted and good ground effect. Dry-type transformers generally have relatively high technical requirements.

1. Dry-type transformer body: SGB10 series, three-phase double-roller dry-type transformer, reference ratio: 10KV/0.4KV

2. Connection group label: Dyn11, low-voltage side neutral lead

3. Cooling method: fan cooling

4. Insulation class: H (C) class, higher temperature rise: 125K (150K); limit temperature: 180°C (220°C); [Dry-type transformer GB6450-1986 Dry-type transformer temperature rise limit]

5. Insulation grade: lightning impulse withstand voltage (peak value): ≤75KV; 1 minute power frequency withstand voltage (effective value): ≤35KV;

6. Neutral point operation mode: direct grounding

7. The service life of dry-type transformer is not less than 30 years

8. At higher ambient temperatures, dry-type transformers can operate at full load for a long time in closed dry-type transformer cabinets; dry-type transformers can operate at 120% load when the fan cooling system is intact and external ventilation is good. Safe and reliable operation.

9. Moisture-proof, dust-proof, smoke-proof has strong three-proof ability; the ability to be put into operation safely after drying.

10. It has good flame retardancy and will not burn by itself. When encountering a fire source, no harmful gas will be produced.