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    UPS/DK+3000VA - LEGRAND 310172.
    The Legrand UPS model Daker DK Plus 3000 is uninterruptible
    power source with high frequency PWM technology, Double 
    Conversion On-Line, solid neutral, Rated Power 3,000 VA – 2700 W, 
    equipped with valve-regulated, hermetically-sealed accumulator 
    batteries, contained in a specific compartment inside the UPS or 
    in one or more external cabinets, sized to guarantee a minimum 
    uptime of 8 minutes at 80% of the load.
    The electronics and batteries are contained in just two rack units.
    The architecture of this UPS means it can be installed in either a 
    Tower configuration or inside Rack cabinets.
    The rectifier of the UPS is comprised of a control and regulating 
    circuit (PFC), which, in addition to normal rectifier functions also:
    • automatically corrects the power factor of the load to restore it to a
    value of > 0.99 with a load applied at the output at 20% of the
    rated load;
    • power the inverter without requiring energy from the batteries,
    even when there is very low voltage from the mains;
    • ensures a total harmonic distortion of the input current THDIin
    < 3% without the addition of filters or supplementary parts.
    The bypass circuit is designed and built in compliance 
    with the following:
    − Electromechanical switch
    − Command and control logic managed by a microprocessor that:
    • automatically transfers the load directly onto the primary mains
    line without interrupting the power supply if any conditions of
    overload, over temperature, continuous voltage outside of the
    tolerances and inverter anomaly arise;
    • automatically re-transfers the primary mains line load to an 
    inverter line, without interrupting the power supply, once
    normal conditions of the load have been restored;
    • if the primary mains line and the inverter are not synchronized,
    the bypass must be disabled.
    A diagnostic and shutdown software (UPS Communicator), if
    accordingly installed in a PC connected to the UPS, which
    allows you to access all of the DHEA's operational data, make 
    adjustments and settings to the special functions and control 
    Windows and Linux operating system shutdown.
    An optional software (UPS management software) offers hierarchic 
    multiserver shutdown and remote management of the UPS for any 
    operating system in a heterogeneous network (Windows, Novell, Linux 
    and the common Unix).
    Daker DK Plus 3000 is managed by a microprocessor and is able to 
    display, on a control panel and LCD screen, the alarms and 
    operating modes described below:
    • normal operation
    • output frequency that is not synchronized with the input
    • battery-powered operation
    • operation in bypass mode
    • faulty power module
    • overloaded
    • generic anomaly
    • incorrect neutral connection
    • back-up time
    • end of uptime
    The Daker DK Plus 3000 Static Uninterruptible Power Supply bears 
    the CE marking pursuant to Directives 2014/35, 2104/30, and is 
    designed and built in compliance with the following standards:
    • EN 62040-1 “General and safety requirements for UPSs used in 
    areas that are accessible to the operator”
    • EN 62040-2 “Electromagnetic Compatibility requirements (EMC)”
    • EN 62040-3 “Performance and test method requirements”.



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