Traditional Culture Encyclopedia - Hotel franchise - What high and low piezoelectric devices are used in five-star hotels? The more detailed, the better!

What high and low piezoelectric devices are used in five-star hotels? The more detailed, the better!

Direct burner (or refrigerator), freezing pump, cooling pump, cooling tower, fan, fan coil, high-level water tank, transformer, generator (or dual power supply), high-voltage cabinet (including high-voltage incoming cabinet, voltage transformer cabinet, high-voltage collector cabinet and metering cabinet), low-voltage cabinet (including low-voltage collector cabinet, capacitor cabinet and each branch control cabinet), contact switch, generator cabinet and DC cabinet. ......