An Uninterruptible Power Supply (UPS) for the power protection of corporate wide and large network applications.
Master MPS provides maximum protection for vital ‘mission-critical' networks, security applications (electro-medical) and industrial applications thanks to its outstanding mechanical and electrical design. The UPS has an extremely outstanding mechanical and electrical design: isolation transformer on the inverter, high short-circuit current and sinusoidal absorption with low THDi.
Master MPS is also available in industrial 220Vdc and 400Hz frequency converter formats. The latest development includes the Master HP series (100-250kVA) which has an IGBT-based rectifier. This provides an extremely low input harmonic distortion and a high input power factor.
Uninterruptible Power Supply Three Phase output power protectionThe Master MPS 10-800kVA UPS series uses on-line technology (VFI) with an isolation transformer on the inverter output. The load is powered continuously by the inverter with a filtered, stabilised and regulated sinewave supply. The input and output EMI filters considerably increase the immunity of the load to mains disturbances and surges, even on bypass.
When the mains fails, the inverter which is constantly powering the load simply draws power from a battery (internal on some models) to provide complete protection. Protection from extended blackouts can be achieved using battery extension packs or a combination of battery extension packs and a generator.
Compatibility and EfficiencyMaster MPS has been designed for maximum generator and MV/LV transformer compatibility. The UPS has a progressive rectifier start-up and the option to reduce battery charging current during recharge periods. In addition overall efficiency has been increased with system loss reductions achieved over traditional UPS in the transformer windings and power factor correction assemblies, and the reduction of current harmonics generated by the UPS itself.
Additional battery extension packs allow the standard battery runtime to be extended up to several hours.
Battery Management TechnologyMaster MPS UPS use a newly developed battery management technology to help them achieve maximum battery performance and prolonged design life. Specific features of the new battery management technology include:
- Battery charging is set on two voltage levels to optimise recharge current and reduce recharge times
- Temperature compensated charging with protection against deep discharges to reduce ageing and prolong battery life
- Use of a charge blocking system to reduce electrolyte consumption and further lengthen life of sealed lead acid (VRLA) batteries
- Automatic battery testing to provide advanced indication of potential battery failures