HR17N

Working environment conditions:

1.1 Ambient air temperature

The ambient air temperature shall be not higher than +40ºC and the average temperature within 24 hours shall be not higher than +35ºC. Ambient air temperature shall not be lower than -5ºC.

1.2 Altitude

The altitude of installation site shall not be more than 2,000m.

1.3 Atmospheric conditions

1.3.1 When the maximum temperature is +40ºC, the relative humidity of atmosphere at the installation site shall be not higher than 50%, and a higher relative humidity is allowed at the lower temperature. For example, the relative humidity can reach 90% at 20ºC. Special measures shall be taken to deal with occasional condensation due to temperature change.

1.3.2 Pollution grade: 3.

1.4 Installation category: III; They shall be installed in a place without significant shake, shock and vibration,and invasion of rain and snow, where there shall be no media with explosive danger which does not contain any gas or dust sufficient to corrode metal and damage the insulation.

1.5 It shall be installed vertically. The indicating position of the handle indicating end shall be consistent with the product status.