WÄRTSILÄ JOVYSTAR HP 200 kVA Operating Manual

WÄRTSILÄ JOVYSTAR HP 200 kVA Operating Manual Manual pdf 11 page image

Wärtsilä JOVYSTAR HP 200-800kVA BAX 4640 E - 11 -3 System descriptionUPS of this series are true on-line, double conversion UPS (classification-code VFI-SS-111); the inverter supplies theload under normal operating conditions, whether mains is available or not (according to the battery autonomy time).ATTENTION:The UPS output is energized even during mains failure, therefore in compliance with the prescriptions ofEN 62040, the installer must label the outlets, plugs or lines supplied by the UPS, making the user awareof this fact.This true online concept guarantees great advantage to the user, as it supplies clean, continuously regulated power andguarantees a stabilized voltage. Thanks to the double conversion principle, the load will be protected from micro-interruptions due to excessive mains variation. It prevents damage to the critical load.Block diagramLegend of the block diagram:Input UPS Input terminals (1L1, 1L2, 1L3, PE.)Input Bypass Bypass input terminals (2L1, 2L2, 2L3, 2N, PE.)RCB Rectifier Circuit BreakerSBCB Static Bypass Circuit BreakerMBCB Manual Bypass Circuit Breaker; only available at 200-300 kVA as standardequipment, available at 400-800 kVA as option)BCB Battery Circuit BreakerOCB Output Circuit BreakerUPS Output Output terminals (3L1, 3L2, 3L3, 3N, PE.)Rectifier The IGBT rectifier converts the input AC-voltage into a regulated DC-voltage supply-ing the inverter and charging the batteries.Inverter The inverter converts the DC-voltage delivered by the rectifier or by the battery intoan AC-voltage, regulated by Pulse-Width-Modulation. The output of the inverter isshort circuit proof by electronic short-circuit-protection.Static Switch The static bypass consists of a thyristor-switch. It switches the mains over to the UPSoutput. During normal operation the inverter output is switched to the UPS outputwhile the bypass is blocked. During overload at the UPS output or an inverter failurethe attached loads will be supplied immediately by the bypass.Manual Bypass The manual bypass feeds the load in case of maintenance or disturbances of theUPS. The manual bypass is to be used only by qualified personnel under considera-tion of the described instructions in this manual!