Measuring the insulation
■
Measuring the insulation of the drive
WARNING!
Do not do any voltage withstand or insulation resistance tests on any part of the
drive as testing can damage the drive. Every drive has been tested for insulation
between the main circuit and the chassis at the factory. Also, there are
voltage-limiting circuits inside the drive which cut down the testing voltage
automatically.
■
Measuring the insulation of the input power cable
Before you connect the input power cable to the drive, measure its insulation according to
local regulations.
■
Measuring the insulation of the motor and motor cable
WARNING!
Obey the safety instructions of the drive. If you ignore them, injury or death, or
damage to the equipment can occur.
If you are not a qualified electrical professional, do not do installation or
maintenance work.
1.
Do the steps in section
Electrical safety precautions (page 15)
before you start the work.
2.
Make sure that the motor cable is disconnected from the drive output terminals.
3.
Measure the insulation resistance between each phase conductor and the protective
earth conductor. Use a measuring voltage of 1000 V DC. The insulation resistance of
an ABB motor must be more than 100 Mohm (reference value at 25 °C [77 °F]). For the
insulation resistance of other motors, refer to the manufacturer’s instructions.
Note:
Moisture inside the motor casing reduces the insulation resistance. If you think
that there is moisture in the motor, dry the motor and do the measurement again.
1000 V DC,
> 100 Mohm
U1-PE, V1-PE, W1-PE
M
3~
U1
V1
W1 PE
ohm
■
Measuring the insulation of the brake resistor circuit
WARNING!
Obey the safety instructions of the drive. If you ignore them, injury or death, or
damage to the equipment can occur.
If you are not a qualified electrical professional, do not do installation or
maintenance work.
84 Electrical installation
Summary of Contents for ACS880-04FXT
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 04FXT drive module packages Hardware manual ...
Page 2: ......
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Page 54: ...54 ...
Page 82: ...82 ...
Page 86: ...M10 86 Electrical installation ...
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Page 160: ...Standard configuration IP00 UL Type Open 160 Dimension drawings ...
Page 161: ...Drive module with optional support brackets IP00 UL Type Open Dimension drawings 161 ...
Page 163: ...Mounting plate opening 3AXD50000038119 Dimension drawings 163 ...
Page 164: ...3AXD50000038119 164 Dimension drawings ...
Page 182: ... Declaration of conformity 182 The Safe torque off function ...
Page 183: ...The Safe torque off function 183 ...
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