Engineering Guide CDA3000
3-1
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EN
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Selection of inverter module
3.1
Technical data .........................................................3-3
3.1.1
Acceptance tests .................................................3-5
3.1.2
Ambient conditions ..............................................3-6
3.1.3
Installation and cooling methods ..........................3-7
3.2
Extreme operating conditions ..............................3-14
3.2.1
Mains side/system condition ..............................3-16
3.2.2
Loading on the supply system ............................3-20
3.2.3
General points on the mains connection .............3-21
3.2.4
Operation of fault current breakers .....................3-23
3.2.5
Switching at the inverter input ...........................3-24
3.2.6
High-voltage test/Insulation test .........................3-24
3.2.7
Forming of the DC-link capacitors ......................3-25
3.2.8
Direction of rotation and terminal designation ....3-27
3.2.9
Switching at the inverter output .........................3-28
3.2.10
Short-circuit and ground fault proofing ...............3-29
3.2.11
Motor cable length .............................................3-29
3.2.12
Voltage load on the motor winding .....................3-31
3.2.13
Motor protection possibilities .............................3-31
3.2.14
Power reduction .................................................3-33
3.2.15
Calculation of effective inverter
capacity utilization ............................................ 3-55
3.2.16
Measurement on the inverter module .................3-58
