HP R1500 HP 3 Phase UPS User Guide - Page 65
Normal mode, Standard mode, Full-Time Standard mode, High Efficiency mode
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o Standalone UPS configuration-See "Powering down the standalone UPS (on page 72)." o Individual UPS in a parallel configuration-See "Powering down an individual paralleled UPS (on page 72)." o Parallel UPS configuration-See "Powering down the parallel system (on page 73)." 2. Power to the load ceases. IMPORTANT: While in Standby mode, the UPS maintains the charge on the batteries, but no power is available at the output receptacles. The UPS remains in Standby mode until an alternate mode is selected or until utility power is removed. Normal mode In Normal mode: • Power is available at the UPS receptacles. • The UPS charges the batteries as necessary. Depending on input power conditions, the UPS automatically changes modes. The UPS has three types of Normal mode: • Standard mode (on page 65) • Full-Time Standard mode (on page 65) • High Efficiency mode (on page 65) Standard mode If the input line exceeds normal operating range, the UPS transfers to Standard mode (Online mode) to produce a regulated output voltage. When the input line returns to normal operating range, the UPS returns to High Efficiency mode (on page 65). Full-Time Standard mode Full-Time Standard mode (continuous Online mode) is user selectable for full-time operation. High Efficiency mode By default, the UPS operates in a High Efficiency mode that minimizes heat contribution to the rack environment. The system bypass input directly supplies the system output with three-phase AC power, and the UPS automatically transfers to double-conversion (Normal mode (on page 65)) operation as needed. The battery recharges as necessary. Continuous double-conversion mode Continuous double-conversion mode is available only for loads less than 10 kW (86%). If the load exceeds the 10 kW limit while in Standard mode, the UPS switches to High Efficiency mode until the load is reduced below 9 kW. After three attempts within one hour to operate in Standard mode, the UPS locks into High Efficiency mode for one hour to prevent continuous cycling. UPS operations 65