Installation Of The Inverter And Enclosure Design; Inverter Installation Environment; Standard Environmental Specifications Of The Inverter; Temperature - Mitsubishi Electric FR-F800 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 the structure, size, and device layout of the enclosure by
fully considering the conditions such as heat generation of the contained devices and the operating 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 satisfies 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
LD
Surrounding air

temperature

SLD
Ambient humidity
Storage temperature
Atmosphere
Altitude
Vibration

Temperature applicable for a short time, e.g. in transit.

For the installation at an altitude above 1,000 m (3280.80 feet) up to 2,500 m (8202 feet), derate the rated current 3% per 500 m (1640.40 feet).
2

2.9 m/s or less for the FR-F840-04320(185K) 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).
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.
(a) Measures against high temperature
• Use a forced ventilation system or similar cooling system. (Refer to
• Install the enclosure in an air-conditioned electric 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.
(b) 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.)
(c) 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.
26
INSTALLATION AND WIRING
-10 to +50°C (non-freezing)
-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.
2
5.9 m/s or less at 10 to 55 Hz (directions of X, Y, Z axes)

Description
5 cm
(1.97 inches)
Measurement
position

page 28.)
Measurement
position
Inverter
5 cm
(1.97 inches)
5 cm
(1.97 inches)