Transcription of AYK 550 Air-Modulator Engineering Guide
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AYK 550 Air-Modulator Engineering Guide
AYK 550 Air-ModulatorFORM (704)1 - 75HP208 - - 150HP380 - 480 VACENGINEERING GUIDEYORK INTERNATIONAL2 Nomenclature .. 3 Introduction .. 3 AYK 550 Air-Modulator .. 3 Why Variable Speed? .. 3 What is a Variable Speed Drive? .. 3 Application .. 4 General Application Considerations .. 4 Fan Applications .. 5 Retrofit Fan Applications .. 6 Pump 7 Pump and Fan Control .. 8 Cooling Tower 9 Dimensions .. 10 AYK 550 Frame Size Chart .. 10 Base drive with Conduit Box - Option OO .. 11 Base Drive with Fused Disconnect - Option AO .. 12 Base Drive with 2 Contactor Bypass, Option CM .. 13 Enclosures for Option CM .. 14 Performance Data .. 15200 - 240 Volts .. 15380 - 480 Volts .. 17 Derating Charts .. 19 Top 10 Selling Features .. 20 YORK Package Configurations .. 21CM Package with 2 Contactor Bypass Internal View .. 22 Accessories and Options.
The Air-Modulator is designed with electronic I2t U.L. Listed overload protection which limits the current to 100% of the motor rated current eliminating the need
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