Low-Voltage Transformers

THO/NC - 3ph isolating & safety - isolating transformers, horizontal type (IP00)
ΕΝ 61558-2-4 / IEC 61558-2-4 ΕΝ 61558-2-6 / IEC 61558-2-6
Characteristics
- Rated power: 10KVA – 1600KVA
- Type: Dry
- Input phase – phase voltage: ≤ 690V AC (can be manufactured with wider voltage range without the LR approval marking)
- Output phase – phase voltage: ≤ 450V AC (can be manufactured with wider voltage range without the LR approval marking)
- Operation frequency: 50-60Hz
- Operation: Continuous at full load (service factor 1)
- Voltage drop (no load – full load): up to 5% for power up to 15KVA, up to 2,5% for power over 15KVA
- Protective class: Ι
- Insulation class: F (155οC)
- Maximum ambient temperature: 45°C
- Maximum temperature rise: 90οC
- Enviromental class: 2
- Protecion degree: IP 23
- Terminals: rail clamps or high current stud terminals or copper bars (depending on rated current)
- Cooling: normal air flow (AN)
- Lifting way: eye nuts into enclosure
- Mounting way: flooring
- Thermal protection: temperature sensors into windings (optional)
- Remote thermal control: temperature monitoring with RS 485 port (optional)
- Manufacturing standards: IEC 60076-11, IEC 60092-303, IEC 61558-2-4, Lloyd’s Register’s Rules and Regulations
- Approval: LR Type Approval