MASTER DIALOG 250-800kVA

An Uninterruptible Power Supply (UPS) for the power protection of enterprise wide, large network and complete building applications. Master Dialog provides maximum protection for vital ‘mission-critical' networks, security applications (electro medical) and industrial applications.

Master Dialog has an extremely outstanding mechanical and electrical design: isolation transformer on the inverter, extremely high short-circuit current and sinusoidal absorption with a THDi up to 5%.

Uninterruptible Power Supply - Three Phase output power protection

250-800kVA three input/three phase output

Power Protection

The Riello UPS Master Dialog RM (250-800kVA) Uninterruptible Power Supplies use on-line technology (VFI) with an isolation transformer on the output of the inverter. In on-line mode the load is powered continuously by the inverter to remove sags, surges and brownouts, through EMI filters to suppress transients, spikes and electrical noise.

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.

Whatever the runtime installed there should be sufficient time for the protected computer systems to be shutdown in an orderly manner using the PowerShield software, supplied as standard, for Windows 95, 98, 2000, 2003, Me, XP, Mac OSx, 9.x, Linux NT 4.0 operating systems. Additional remote monitoring can be achieved using PowerNetGuard on Wide Area Networks or the Telenetguard remote service monitoring system with text alerts for site problems, and the wide range of NetMan SNMP interfaces and MultiCom adapters available.

Specific Solutions

Master Dialog can be adapted to your requirements. Please contact us to discuss specific applications and options.

Advanced Communication

advanced, multi-platform communication, for all operating systems and network environments: PowerShield supervision and shut-down software included, with SNMP agent, for Windows 95, 98, 2000, Me, XP, Mac OS X, 9.x, Linux, NT 4.0, Novell operating systems. The UPS is equipped with a cable for direct connection to the PC (Plug and Play)
RS232 serial port
dry contact relays
EPO (Emergency Power Off) shutdown input contact
input for switching to bypass by remote signal
digital or LED-based remote control panel

For smaller models see Master Plus 100-200kVA or Master Dialog 10-80kVA.

Features

reliable, filtered, stabilised and regulated sinewave output (double conversion on-line technology VFI according to EN50091-3 specifications with filters for atmospheric disturbance suppression)
high reliability: IGBT technology, full microprocessor control with no-break static and manual bypasses,
extremely high short-circuit current to ensure compatibility with the most difficult applications (lighting, drives and industrial processes) and an isolation transformer on the inverter output
minimum impact on the mains supply: up to 5% input current distortion to prevent resonance problems for upstream applications. The distortion is unaffected by impedance or frequency, and allows economies when sizing power sources such as isolation transformers or generators for Master DIALOG installations
high level diagnostics: event log, states, measurements and alarms, available from the built- in LCD in several languages
maximum reliability and power availability (parallel up to 6 units for redundant (N+1) or parallel operation)
EPO (Emergency Power Off) input for UPS shut- down using remote emergency button
front access
parallel card fitted
back-feed protection fitted as standard

Summary

For UPS maintenance plan and warranty details details see our service pages or download a copy of the latest powerUPS and SystemCare UPS service and repair brochure.