EASY SOURCE
Master Plus technology removes the problems of over sizing upstream power sources, whilst improving load power factors and current harmonics.
The UPS features the latest input current absorption techniques including progressive rectifier start-up and the option to reduce battery charging currents.
These features make Master Plus one of the most generator compatible and environmentally friendly UPS available.
BATTERY CARE SYSTEM: MAXIMUM LIFETIME POTENTIAL
Traditionally, when a mains supply is present the UPS charges its batteries. Battery power is used for the inverter should the input supply fail. Efficient battery management and care is therefore essential to the
overall performance of the UPS in an emergency.
The Master Plus Battery Care System consists of a range of features designed to provide optimum performance and enhanced operating life:
• Dual level charging regime to optimise recharge currents and lower recharge times
• Temperature compensation and deep discharge protection to reduce overall battery aging
• Charge blocking system to reduce electrolyte consumption and lengthen the life of VRLA batteries
• Predictive battery testing to spot potential battery deterioration and failure
Master Plus is also compatible with different battery technologies:
open-vented lead acid and AGM and Gel VRLA, NiCd.
MAXIMUM RELIABILITY AND AVAILABILITY
Connect up to 8 units in parallel or N+1 redundancy, even of different power ratings. The UPS continue to operate in parallel even if one of the interconnecting communication cables is disconnected (closed loop).

FLEXIBILITY
Master Plus is suitable for a wide range of applications including IT and the most demanding industrial environments. The UPS is suitable for power capacitive loads such as blade servers, without any reduction in
active power, from 0.8 to 0.9 lagging. With a broad range of accessories and options, complex configurations and system architectures can be achieved to guarantee maximum power availability and the option to add
new UPS without interruption to existing users. Using the Riello UPS Group Synchroniser (UGS) and Parallel Systems Joiner (PSJ) sophisticated inter group parallel and redundant systems can be achieved to provide the highest possible levels of resilience and availability.

OPTIONS
• UGS - UPS Group Synchroniser
Allows 2 or more UPS not in parallel to remain synchronised even during a power failure.
The UGS also enables a RIELLO UPS to be synchronised with an independent power source, even of a different power rating.
• PSJ - Parallel Systems Joiner
Connects two UPS groups operating in parallel configurations through a power coupling switch.
The Slave UPS Group is permanently synchronised to the Master group. Should one of the UPS in one of the parallel groups fail, the PSJ will automatically connect the remaining UPS to the other group via an external bypass
EASE OF INSTALLATION
Master Plus is compact with a foot print of only 0.64sqm for a 200kVA system. Front access to internal assemblies and top panel ventilation make space allocation within confined data processing or plant rooms
easy. Master Plus can be placed against a wall as there is no requirement for rear or side panel access for maintenance or ventilation.
SPECIFIC SOLUTIONS
The UPS can be adapted to your requirements.
Please contact TEC to discuss specific applications and options.
ADVANCED COMMUNICATION
• Compatible with TeleNetGuard for remote maintenance
• Advanced, multi-platform communication for all operating systems and
network environments: PowerShield³ monitoring and shut-down software included, with SNMP agent, for Windows 9x, ME, NT 4.0, 2000, XP, Vista and 2003 server; Mac OS X, Linux, Novell and most popular Unix operating systems
• The UPS is supplied with a cable for direct connection to the PC (Plug and Play)
• RS232 double serial port
• Installation slot for an Emergency Power Off (EPO) interface to allow the UPS to be switched off remotely in an emergency.
• Generator interface: enables desynchronisation of the UPS output from a generator supply which may be subject to phase and frequency variations. The interface also enables more economic use of the
battery charger.