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 18)
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.
90 Electrical installation
Summary of Contents for ACH580-04
Page 1: ... ABB DRIVES FOR HVAC ACH580 04 drive modules Hardware manual ...
Page 2: ......
Page 4: ......
Page 54: ...54 ...
Page 88: ...88 ...
Page 100: ...100 ...
Page 118: ...118 ...
Page 122: ...122 ...
Page 124: ...124 ...
Page 128: ...3 6 5 5 128 Maintenance ...
Page 134: ...134 ...
Page 156: ...R10 standard configuration 156 Dimension drawings ...
Page 157: ...R10 with E208 0H354 H356 H370 0H371 Dimension drawings 157 ...
Page 158: ...R10 with option B051 158 Dimension drawings ...
Page 159: ...R10 with option E208 H356 P906 192 Tools R10 3 1 Dimension drawings 159 ...
Page 160: ...R10 with option E208 0H371 H356 0H354 H370 P906 Tools 191 R10 2 1 160 Dimension drawings ...
Page 161: ...R10 with option B051 P906 190 Tools R10 1 1 Dimension drawings 161 ...
Page 162: ...R11 standard configuration 162 Dimension drawings ...
Page 163: ...R11 with option E208 0H371 H356 0H354 H370 Dimension drawings 163 ...
Page 164: ...R11 with option B051 164 Dimension drawings ...
Page 165: ...R11 with option E208 H356 P906 Dimension drawings 165 ...
Page 166: ...R11 with option E208 0H371 H356 0H354 H370 P906 166 Dimension drawings ...
Page 167: ...R11 with option B051 P906 Dimension drawings 167 ...
Page 186: ... Declaration of conformity 186 The Safe torque off function ...
Page 206: ...Dimension drawing 206 External control unit option P906 ...
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