Measuring the insulation
■
Measuring the insulation resistance 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 resistance of the input power cable
Before you connect the input power cable to the drive, measure its insulation
resistance according to local regulations.
■
Measuring the insulation resistance 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, commissioning or
maintenance work.
1.
Do the steps in section
Electrical safety precautions (page 20)
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 reduces the insulation resistance. If you think
that there is moisture in the motor, dry the motor and do the measurement
again.
92 Electrical installation – IEC
Summary of Contents for ACH580-31
Page 1: ... ABB INDUSTRIAL DRIVES ACH580 31 drives Hardware manual ...
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Page 39: ...Operation principle 39 ...
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Page 113: ...R6 1 7 N m Electrical installation IEC 113 ...
Page 114: ...R8 1 7 N m 114 Electrical installation IEC ...
Page 130: ...R3 Max 250 mA 130 Electrical installation North America NEC ...
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Page 166: ... Fan arrow must point up 166 Maintenance ...
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Page 214: ...R3 IP21 UL Type 1 3AXD50000028643 214 Dimension drawings ...
Page 215: ...R3 Option B056 IP55 UL Type 12 3AXD50000045321 Dimension drawings 215 ...
Page 216: ...R6 IP21 UL Type 1 3AXD50000037446 216 Dimension drawings ...
Page 217: ...R6 Option B056 IP55 UL Type 12 3AXD50000045351 Dimension drawings 217 ...
Page 218: ...R8 IP21 UL Type 1 3AXD50000147052 218 Dimension drawings ...
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Page 275: ...CMOD 01 multifunction extension module external 24 V AC DC and digital I O 275 ...
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Page 282: ...282 CMOD 02 multifunction extension module external 24 V AC DC and isolated PTC interface ...