Enclosure Design; Inverter Installation Environment - Mitsubishi Electric FR-E700 Instruction Manual

Installation
2.4

Enclosure design

When an inverter enclosure is to be designed and manufactured, heat generated by contained equip-
ment, etc., the environment of an operating place, and others must be fully considered to determine
the enclosure structure, size and equipment layout. The inverter unit uses many semiconductor de-
vices. To ensure higher reliability and long period of operation, operate the inverter in the ambient en-
vironment that completely satisfies the equipment specifications.
2.4.1

Inverter installation environment

As the inverter installation environment should satisfy the standard specifications indicated in the fol-
lowing table, operation in any place that does not meet these conditions not only deteriorates the
performance and life of the inverter, but also causes a failure. Refer to the following points and take
adequate measures.
Item
Ambient temperature
Ambient humidity
Storage temperature
Atmosphere
Maximum altitude
Vibration
Tab. 2-1:
Temperature applicable for a short time, e.g. in transit.
Temperature
The permissible ambient temperature of the inverter FR-E700 SC is between 10 and +50 °C. Always
operate the inverter within this temperature range. Operation outside this range will considerably
shorten the service lives of the semiconductors, parts, capacitors and others. Take the following meas-
ures so that the ambient temperature of the inverter falls within the specified range.
● Measures against high temperature
– Use a forced ventilation system or similar cooling system. (Refer to page 2-10.)
– Install the enclosure in an air-conditioned electrical chamber.
– Block direct sunlight.
– Provide a shield or similar plate to avoid direct exposure to the radiated heat and wind of a
heat source.
– Ventilate the area around the enclosure well.
● Measures against low temperature
– Provide a space heater in the enclosure.
– Do not power off the inverter. (Keep the start signal of the inverter off.)
● Sudden temperature changes
– Select an installation place where temperature does not change suddenly.
– Avoid installing the inverter near the air outlet of an air conditioner.
– If temperature changes are caused by opening/closing of a door, install the inverter away from
the door.
FR-E700 SC EC/ENE
Specification
10 °C to +50 °C (non-freezing)
90% RH or less (non-condensing)
-20 °C to +65 °C
Free from corrosive and explosive gases, dust and dirt
1000 m or less
5.9 m/s² or less (0,6 g) at 10 to 55 Hz (directions of X, Y, Z axes)
Environmental standard specifications of inverter
Enclosure design
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