Dry-Type Transformers – 630 kVA
Transformers whose magnetic core and windings are not immersed in insulating liquid are referred to as dry-type transformers. These transformers contain no oil at all. Their windings are insulated and encapsulated with epoxy resin reinforced with fiberglass, providing effective protection against external factors. Dry-type transformers can operate either in open air or within a gas environment.
Technical Information
| Parameter: | Value: |
| Product or Component Type | Dry-type transformer |
| Network Type | AC |
| Directives | 2015/2014/548/EC – Ecodesign |
| Type of Installation | Indoor |
| Maximum Altitude | < 1000 m |
| Cooling Method | ANAF (forced air from natural air) |
| Winding Material | Aluminum |
| Insulation Material | Cast resin (HV) |
| Protection Degree | IEC enclosure IP21; Low-voltage cable box IP21 |
| Phase | 3-phase |
| Rated Power | 630 KVA |
| Rated Frequency | 50 Hz |
| Rated Primary Voltage | 20 kV |
| Secondary Voltage (No-Load) | 420 V |
| Power-Frequency Withstand Voltage (50 Hz, 1 min) – Primary | 24 kV AC |
| Power-Frequency Withstand Voltage (50 Hz, 1 min)-Secondary | 1.1 kV AC |
| Rated Insulation Level – Primary Circuit | 50 kV AC |
| Rated Insulation Level – Secondary Circuit | 3 kV AC |
| Lightning Impulse Withstand Voltage (BIL), 1.2/50 με | 125 kV |
