Mitsubishi Electric ECOV-X37VA Manuel D'installation page 41

Do not touch the charging part of the power supply wiring. When performing a test run, if there is the possibility that refrigerant
may be left inside the compressor after a long stoppage period or flood-back error stop, disconnect the power supply wiring
from the terminal block of the compressor after power shutoff, and measure the insulation resistance of the compressor to
check that the compressor is not ground-faulted.
• If the insulation resistance is 1 MΩ or below, energize the belt heater for 12 hours or more. Energize the unit and keep the
ON/OFF switch (SW1) OFF for at least 12 hours.
(When the compressor is energized to evaporate the liquid refrigerant inside, the insulation resistance rises.)
• If the power supply cord is damaged, it must be replaced by the manufacturer, its service agent, or qualified personnel in
order to avoid hazards.
10-2. Wire capacity
Maximum allowable voltage for this unit is shown in the figure.
Wire capacity must be according to the applicable laws
and regulations. The range of allowable voltage is listed
in the next section "Electrical characteristics".
The wire size is the minimum value for the metal conduit
wiring. If the voltage drops, use a wire that is one size
thicker in diameter.
Note
Starting voltage cannot be measured with a tester, but starting voltage drop (Voltage drop A) is about 5 times the voltage
difference (Voltage drop B) between stoppage voltage and operation voltage. The amount of starting voltage can be estimat-
ed by subtracting operation voltage from voltage with the unit stopped.
(Voltage drop A) ≈ 5 × (Voltage drop B)
Starting voltage drop A can be disregarded because this unit starts with inverter.
This unit complies with IEC 61000-3-12 provided that the short-circuit power Ssc is greater than or equal to Ssc
terface point between the user's supply and the public system. It is the responsibility of the installer or user of the equipment
to ensure, by consultation with the distribution network operator if necessary, that the equipment is connected only to a sup-
ply with a short-circuit power Ssc greater than or equal to Ssc
*1 Ssc
Model
ECOV-X37VA
ECOV-X55VA
Volt-
age
*1
.
Ssc (MVA)
1.66
41
Stop
During operation
Voltage
drop A
323-353 V or higher
At startup
Voltage drop B
380-415 V ± 10%
Time
*1
at the in-
WT09614X03_GB