Ambient temperature: - 5 °C ~ + 40 °C The hottest month average temperature + 30 °C The hottest year average temperature +20 °C The altitude does not exceed 1000 m The power supply voltage waveform similar to sine wave Three-phase power supply voltage should be roughly symmetric No obvious contamination of the installation environment In the cabinet is special

GB/T10228-2015 GB1094.11-2007 High pressure rating: 10 (10.5, 11, 6, 6.3, 6.6) kV Low pressure rating: 0.4 kV Tapping range: no excitation voltage regulation (+5%,+2 x2.5%) Link category: Dyn11 or Yyn0 Insulation level: LI75AC35 / AC5