Installation Of The Inverter And Enclosure Design; Inverter Installation Environment - Mitsubishi Electric FR-A820-00046 Instruction Manual

Installation of the inverter and enclosure design

2.3 Installation of the inverter and enclosure design
When designing or manufacturing an inverter enclosure, determine its structure, size, and device lay-
out by fully considering the conditions such as heat generation of the contained devices and the op-
erating environment. An inverter unit uses many semiconductor devices. To ensure higher reliability
and long period of operation, operate the inverter in the ambient environment that completely sat-
isfies the equipment specifications.
2.3.1

Inverter installation environment

The following table lists the standard specifications of the inverter installation environment. Using
the inverter in an environment that does not satisfy the conditions deteriorates the performance,
shortens the life, and causes a failure. Refer to the following points, and take adequate measures.
Standard environmental specifications of the inverter
Item
Surrounding air
temperature
Ambient humidity
Storage temperature
Atmosphere
Altitude
Vibration
Tab. 2-4:
0 to +50 °C for the FR-A800-GF.
0 to +40 °C for the FR-A800-GF.
Temperature applicable for a short time, e.g. in transit.
For the installation at an altitude above 1,000 m up to 2,500 m, derate the rated current 3% per
500 m.
2.9 m/s² or less for the FR-A840-04320(160K) or higher.
Temperature
The permissible surrounding air temperature of the inverter is between –10 °C and +50 °C (–10 °C and
+40 °C at the SLD rating). (The permissible surrounding air temperature of the FR-A800-GF is between
0 and +50°C (0 and +40°C for the SLD rating).) 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 measures to keep the surrounding air temperature of
the inverter within the specified range.
2 - 12
Description
LD,
ND (initial setting),
–10 to +50 °C (non-freezing)
HD
SLD
–10 to +40 °C (non-freezing)
With circuit board coating (conforming to IEC60721-3-3 3C2/3S2):
95% RH or less (non-condensing)
Without circuit board coating:
90% RH or less (non-condensing)
–20 to +65 °C
Indoors (free from corrosive gas, flammable gas, oil mist, dust and dirt)
Maximum 1,000 m above sea level.
5.9 m/s² or less
Environmental standard specifications of inverter
5 cm
Measurement
position
at 10 to 55 Hz (directions of X, Y, Z axes)
Installation and wiring
Measurement
position
Inverter
5 cm
5 cm