Frequency inverter with manual/automatic override

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Enhanced functionality of the CFW701 frequency inverter for HVAC applications

Frequency inverter with manual/automatic override
Frequency inverter with manual/automatic override

WEG has enhanced the functionality of the CFW701 frequency inverter for HVAC applications with the addition of a manual/automatic override. An integrated motor protection switch gives the new system, consisting of a cabinet unit fitted with a CFW701 frequency inverter, redundant motor protection for consistently reliable operation. In case of a frequency inverter defect or outage, the output relay of the CFW701 connects the motor directly to the mains through an external bypass circuit.

A switch on the front of the cabinet unit allows the user to configure the bypass function for either manual or automatic switching to bypass mode in the event of a fault. This stand-alone system is primarily suitable for the reliable and energy-efficient control of induction motors, used to drive pumps or fans in HVAC installations in hospitals, airports, office buildings, hotels, shopping centres or other facilities. The CFW701 is available in the following sizes: 1: 5.5 - 7.5 kW; 2: 11 - 15 kW; 3: 18 - 30 kW; 4: 37 - 45 kW; 5: 55 - 110 kW.

Posted on November 6, 2014 - (576 views)
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