Operating Instructions MxxMA-MxERA Three-phase AC ... - Lenze
Operating Instructions MxxMA-MxERA Three-phase AC ... - Lenze
Operating Instructions MxxMA-MxERA Three-phase AC ... - Lenze
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Electrical installation<br />
<strong>Three</strong>−<strong>phase</strong> <strong>AC</strong> motor operation on a frequency inverter<br />
6<br />
Minimum requirements for basic<br />
insulation according to IEC/EN<br />
60664−1 (CE)<br />
3.87 mm<br />
ƒ<br />
ƒ<br />
Higher requirements for UL design<br />
Motor diameter<br />
6.4 mm < 178 mm<br />
9.5 mm > 178 mm<br />
The terminal box has to be free of foreign bodies, dirt, and humidity.<br />
All unused cable entries and the box itself must be sealed against dust and water.<br />
6.2 <strong>Three</strong>−<strong>phase</strong> <strong>AC</strong> motor operation on a frequency inverter<br />
Stop!<br />
Motors MFMA are only suitable for frequency inverter operation.<br />
L−force three−<strong>phase</strong> <strong>AC</strong> motors MMA are suitable for the operation on <strong>Lenze</strong> frequency<br />
inverters and can be combined without restriction.<br />
If another inverter is used for operation, the voltage peaks (U pp ) for given rise times (t R ) as<br />
shown in the diagram must not be exceeded.<br />
Fig. 2<br />
Permissible voltage peaks for frequency inverter operation (characteristic according to IEC<br />
60034−25, curve A)<br />
MT−MDXMA−005.iso/dms<br />
BA 33.0005−EN 2.0<br />
33
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