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Improved robustness and efficiency with water cooling
Altivar 71Q is a variable speed drive with water cooling from 90 to 630 kW. It is used in harsh environments, when drives with particular robustness are required. The integrated liquid cooling permits optimal dissipation of the lost heat from the power part and therefore optimizes the encapsulation of the whole electrical drive unit.
Improved dynamics and energy savings with Active Front End (AFE)
Highest robustness during operation
Reliable and simple installation
Consistency to the Altivar products
Mining and tunneling
Enclosures in protection degree IP55 or higher, closed containers or also pressure-resistant encapsulation require a complete heat abstraction of the whole electrical drive unit. Therefore 100% of the losses must be dissipated by the cooling water. This can be done easily with an additional air/water heat exchanger. Thereby the monitored fans in the inverter provide the required air circulation inside the enclosure. The significant advantages of the Altivar 71Q for this application are:
A dust loading even with conductive particles cannot be prevented around shredder drives, especially in case of recycling processes. As a result, special requirements regarding the protection degree are needed for the electrical installation. In a perfectly adapted drive system, sealing walls between the accessible connecting area, the inverter enclosure and the cooling enclosure prevent intrusion of dangerous particles. The significant advantages of the Altivar 71Q for this application are: