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■
EMC filter
The drive has an internal EMC filter as standard. You can install the drive to a
symmetrically grounded TN-S system. If you install the drive to another system, you
may need to disconnect the EMC filter. See
When to disconnect EMC filter or
ground-to-phase varistor (page 64)
.
Note:
If you disconnect the EMC filter, the electromagnetic compatibility of the drive
decreases.
WARNING!
Do not install a drive with the internal EMC filter connected to an earthing system
that the EMC filter is not suitable for (for example, an IT system). The supply
network becomes connected to ground potential through the internal EMC filter
capacitors, which can cause danger or damage to the drive.
■
Ground-to-phase varistor
A drive with the ground-to-phase varistor connected can be installed to a symmetrically
grounded TN-S system. If you install the drive to another system, you may need to
disconnect the varistor. See
When to disconnect EMC filter or ground-to-phase varistor
.
WARNING!
Do not install the drive with the ground-to-phase varistor connected to a system
that the varistor is not suitable for. If you do, the varistor circuit can be damaged.
■
When to disconnect EMC filter or ground-to-phase varistor
The table shows different earthing systems, and when you need to disconnect the EMC
filter (metal EMC screw) or ground-to-phase varistor (metal VAR screw).
WARNING!
Remove the metal EMC screw in systems other than the symmetrically grounded
TN-S systems. If you do not, it can cause danger or damage to the drive.
64 Electrical installation – IEC
Summary of Contents for ACH480
Page 1: ... ABB DRIVES FOR HVAC ACH480 drives Hardware manual ...
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Page 122: ...122 ...
Page 156: ...Frame R1 Frame R1 front side IP20 UL open type 156 Dimension drawings ...
Page 157: ... Frame R1 bottom rear IP20 UL open type Dimension drawings 157 ...
Page 158: ... Frame R1 front side UL Type 1 kit installed 158 Dimension drawings ...
Page 159: ... Frame R1 bottom rear UL Type 1 kit installed Dimension drawings 159 ...
Page 160: ...Frame R2 Frame R2 front side IP20 UL open type 160 Dimension drawings ...
Page 161: ... Frame R2 bottom rear IP20 UL open type Dimension drawings 161 ...
Page 162: ... Frame R2 front side UL Type 1 kit installed 162 Dimension drawings ...
Page 163: ... Frame R2 bottom rear UL Type 1 kit installed Dimension drawings 163 ...
Page 164: ...Frame R3 Frame R3 front side IP20 UL open type 164 Dimension drawings ...
Page 165: ... Frame R3 bottom rear IP20 UL open type Dimension drawings 165 ...
Page 166: ... Frame R3 front side UL Type 1 kit installed 166 Dimension drawings ...
Page 167: ... Frame R3 bottom rear UL Type 1 kit installed Dimension drawings 167 ...
Page 168: ...Frame R4 Frame R4 front side IP20 UL open type 168 Dimension drawings ...
Page 169: ... Frame R4 bottom rear IP20 UL open type Dimension drawings 169 ...
Page 170: ... Frame R4 front side UL Type 1 kit installed 170 Dimension drawings ...
Page 171: ... Frame R4 bottom rear UL Type 1 kit installed Dimension drawings 171 ...
Page 172: ...172 ...
Page 180: ...180 ...
Page 198: ... Declaration of conformity 198 The Safe torque off function ...
Page 206: ...Dimensions 206 BIO 01 I O extension module ...
Page 212: ...Dimensions 3AXD50000031148 rev A 212 BREL 01 relay output extension module ...