Service Conditions - ABB eVM1 Installation And Service Instructions Manual

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5.1.2. Installation and operation
For assembly and operation, please refer to the relative regulations, and in particular to:
• DIN VDE 0101, AC electrical plants with voltage higher than 1 kV
• DIN VDE 0100-410, Installation of electrical plants up to 1000 V, protective measures
• VDE 0105, Operation of electrical plants
• DIN VDE 0141, Earthing systems for special electrical plants with rated voltages higher than 1 kV
• Accident prevention regulations of insurance institutes against accidents at the workplace or of
comparable organisations
• Safety directives for auxiliary and operating materials.

5.2. Service conditions

5.2.1. Normal service conditions
Follow the recommendations in the IEC 60694 and 62271-100 Standards. In more detail:
Ambient temperature
Maximum
Average maximum over 24 hours
Minimum (according to class – 5), apparatus for indoor installation
Humidity
The average value of the relative humidity, measured for a period longer than 24 hours, must not
exceed 95 %.
The average value of the pressure of the water vapour without condensation, measured for a
period longer than 24 hours, must not exceed 2.2 kPa.
The average value of the relative humidity, measured for a period longer than 1 month, must not
exceed 90 %.
The average value of the pressure of the water vapour, measured for a period longer than 1
month, must not exceed 1.8 kPa.
Altitude
< 1000 m above sea level.
5.2.2. Special service conditions
Installations over 1000 m a.s.l.
Possible within the limits permitted by reduction of the dielectric resistance of the air.
Increase in the ambient temperature
Reduction in the rated current.
Encourage heat dissipation with appropriate additional ventilation.
Climate
To avoid the risk of corrosion or other damage in areas with a high level of humidity, and/or rapid
and large temperature variations, take appropriate steps (for example, by using suitable electric
heaters) to prevent condensation phenomena.
For special installation requirements or other operating conditions, please contact ABB.
+ 40 °C
+ 35 °C
– 5°