Power transformer

immersedfor indoor servicefor outdoor service

Features

• Controlled temperature rise
• Low partial discharge
• High short-circuit withstand capability
• Low losses for high energy efficiency

Normal operating conditions

• Altitude: ≤ 1000 m
• Ambient temperature: Maximum air temperature +40°C; maximum monthly average +30°C; maximum annual average +20°C; minimum -25°C
• Relative humidity: ≤ 90% (25°C), no condensation or icing during operation
• Power supply requirements: output waveform close to sinusoidal; three-phase voltages essentially symmetrical
• Installation location: indoor or outdoor

Notes
Variants or adaptations for special site conditions can be provided on request.

Technical specifications

• Rated voltage: 66 kV
• Altitude: ≤ 1000 m
• Ambient temperature range: -25°C to +40°C (see limits above)
• Relative humidity: ≤ 90% (25°C), no condensation or icing during operation
• Installation: suitable for indoor or outdoor installation
• Design highlights: controlled temperature rise; low partial discharge; robust short-circuit performance; optimized losses for energy efficiency
• Power supply requirement: near-sinusoidal output wave; balanced three-phase voltages
• Special configurations: available on order for atypical operating conditions