D-EIMWC00908-16EN - 36/52
Electrical power supply
The machine’s power supply voltage must be the same as that specified on the nameplate
10% while the voltage
unbalance between phases must not be in excess of
3%. Measure the voltage between phases and if the value does
not fall within the established limits, correct it before starting the machine.
ATTENTION
Provide suitable power supply voltage. Unsuitable power supply voltage could cause malfunction of the control
components and undesired triggering of the thermal protection devices, along with a considerable reduction in the life of
the contactors and electric motors.
Unbalance in power supply voltage
In a three-phase system, excessive unbalance between the phases causes overheating of the motor. The maximum
allowed voltage unbalance is 3%, calculated as follows:
Unbalance %:
%
_____
100
x
V
V
V
AVG
AVG
MAX
AVG = average
Example: the three phases measure respectively 383, 386 and 392V, the average is:
383+386+392
=
387 Volts
3
thus the unbalance percentage is
%
29
,
1
100
387
387
392
x
below the maximum allowed (3%)
Summary of Contents for C10FZXS
Page 16: ...D EIMWC00908 16EN 16 52 Figure 4 Evaporator pressure drop...
Page 17: ...D EIMWC00908 16EN 17 52...
Page 18: ...D EIMWC00908 16EN 18 52 Figure 5 Condenser pressure drop...
Page 34: ...D EIMWC00908 16EN 34 52 Figure 12 Compressor overview...
Page 50: ...D EIMWC00908 16EN 50 52...
Page 51: ...D EIMWC00908 16EN 51 52...
