LEGRAND UPS WHAD HE ONLINE 1500VA 1500W

The Legrand UPS model Whad HE 1500 is an uninterruptible power supply with high-frequency PWM technology, On-Line Double Conversion type, passing neutral, Nominal Power 1,500 VA – 1500W, equipped with valve-regulated hermetic accumulator batteries, contained inside the UPS in a special compartment or in one or more external cabinets, sized to guarantee a minimum autonomy of 15 minutes at 80% of the load.

The UPS rectifier consists of a power factor correction (PFC) circuit, which, in addition to the normal rectifier functions, provides:

automatically correct the load power factor to bring it back to a value >0.99 already with an applied output load equal to 20% of the nominal load power the inverter without requesting energy from the batteries even in the presence of very low mains voltage (operation with mains power for VIN values ​​? 110 Vac at 50% of the nominal load) ensure a total harmonic distortion of the input current THDIin < 3% without the addition of filters or additional components The bypass circuit is designed and built in accordance with the following: Electromechanical switch ? Command and control logic managed by a microprocessor which provides for: automatically transferring the load directly to the primary mains without interrupting the power supply, in the event of overload, overtemperature, DC voltage outside the tolerances and inverter faults; automatically transferring the load back from the primary mains to the inverter line, without interrupting the power supply, when normal load conditions are restored; if the primary mains and the inverter are not synchronized, the bypass must be disabled. To protect the batteries from damage caused by deep discharges, the minimum allowable battery voltage threshold varies automatically based on the applied load (default setting), while still allowing the user to select fixed voltage threshold management. Diagnostic and shutdown software (UPS Communicator), if properly installed on a PC connected to the UPS, allows access to all operating data, adjustments and settings for special functions, and control the shutdown of Windows and Linux operating systems. Optional software (UPS SuperviSor) allows hierarchical multi-server shutdown and remote UPS management for Linux and the most popular Unix-like operating systems. The UPS is microprocessor-controlled and can display alarms and operating modes via an LED control panel, as described below: