CGAD-SVN02C-EN
31
Correction
Excessive unbalance between the
phases of a three-phase system will
cause the motors to overheat and to
breakdown. The maximum unbalance
allowed is of 2%. Unbalance of voltage
can be defined as 100 times the
maximum deviation of the three
voltages (three phases) subtracted
from the arithmetic average (without
taking into consideration the signal)
divided by the arithmetic average.
Example:
If the three voltages measured on a
line are 221 volts, 230 volts, and 227
volts, the arithmetic average would be:
(
221 + 230 + 227)/3 = 226 V
The percentage of unbalance is then:
100 x (226 - 221)/226 = 2.2%
The result indicates that there is an
unbalance that is greater than that
permitted of 0.2%. This unbalance
between phases may result in an
unbalance of current of 20%, and the
result would be an increase in the
temperature of the motor's coiling and
a lowering of the motor's durability.
Electrical
Data
WARNING!
!
Turn off the electrical energy and wait for
rotation to cease on all the equipment
before doing services, inspecting,
or testing the units.
Summary of Contents for CGAD020
Page 36: ...CGAD SVN02C EN 36 Wiring Diagram Fig 17 Power and command wiring diagram CGAD 020C Sheet 1 2...
Page 52: ...CGAD SVN02C EN 52 Wiring Diagram Fig 33 Power and command wiring diagram CGAD 070C Sheet 1 2...
Page 60: ...CGAD SVN02C EN 60 Wiring Diagram Fig 41 Power and command wiring diagram CGAD100 Part I...
Page 61: ...CGAD SVN02C EN 61 Wiring Diagram Fig 42 Power and command wiring diagram CGAD100 Part II...
Page 62: ...CGAD SVN02C EN 62 Wiring Diagram Fig 43 Power and command wiring diagram CGAD100 Part III...
Page 63: ...CGAD SVN02C EN 63 Wiring Diagram Fig 44 Layout diagram CGAD100...
Page 64: ...CGAD SVN02C EN 64 Wiring Diagram Fig 45 Power and command wiring diagram CGAD120 Part I...
Page 65: ...CGAD SVN02C EN 65 Wiring Diagram Fig 46 Power and command wiring diagram CGAD120 Part II...
Page 66: ...CGAD SVN02C EN 66 Wiring Diagram Fig 47 Power and command wiring diagram CGAD 120 Part III...
Page 67: ...CGAD SVN02C EN 67 Wiring Diagram Fig 48 Layout diagram CGAD 120...
Page 68: ...CGAD SVN02C EN 68 Wiring Diagram Fig 49 Power and command wiring diagram CGAD150 Part I...
Page 69: ...CGAD SVN02C EN 69 Wiring Diagram Fig 50 Power and command wiring diagram CGAD150 Part II...
Page 70: ...CGAD SVN02C EN 70 Wiring Diagram Fig 51 Power and command wiring diagram CGAD150 Part III...
Page 71: ...CGAD SVN02C EN 71 Fig 52 Layout diagram CGAD150 Wiring Diagram...
Page 72: ...CGAD SVN02C EN 72 Wiring Diagram Fig 53 Layout diagram CGAD 100 125 150 with optionals...