User guide

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MULTI DIALOG MDM/MDT
LOW POWER CONSUMPTION
• On-line Mode: up to 92% efficiency can be achieved due to
the use of IGBT technology, increasing to 98% in one of the
other operating modes.
• Economy Mode: uses Line Interactive (VI) technology to
power less critical loads from the mains supply for certain
periods
• Smart Active: if the mains supply is out of range, the UPS will
power the load from the inverter as an On-line UPS. When
the mains supply returns to within range again, the UPS
will monitor this for a certain period before selecting Line
Interactive operation
SIMPLE TO INSTALL
• option to connect the UPS to single-phase or three phase
mains supplies (MDM series).
• panel adjustment to offset voltage drop down long cable
runs
MAXIMUM RELIABILITY AND AVAILABILITY
• connect up to 8 units in parallel or N+1 redundancy, of even
different power ratings
HIGH LEVEL BATTERY RELIABILITY
• automatic battery test
• recharge compensated for temperature
• automatic or manual rapid charge (boost) – duration
progammable
MAINTENANCE SIMPLICITY = LOW MTTR
For the 40 to 80 kVA models, open the door and remove
the protective panel (standards requirement) and the power
components - mounted on a sliding tray - can be pulled out to
provide easy access to all the electrical and electronic components
for maintenance and repair work. This particular feature means
that the MTTR (Mean Time To Repair) is much lower than
traditional UPS designs with less easily reached assemblies.
A large amount of maintenance information is available from
the front mimic panel and LCD. In addition system operating
parameters are software configurable via a local PC to allow new
functions to be added or adjustments to be made to operating
specifications.
SENSITIVE SUPPLY COMPATIBLE
• For power supply sources that are particularly sensitive to har-
monics (generator sets or transformers of low power with
respect to that of the UPS) it is often a good idea to take
action to limit the harmonics injected back into the supply by
the UPS.
MULTI DIALOG AF series have an active filter and use high
frequency Isolated Gate Bipolar (IGBT) Technology with Di-
gital Signal Processor (DSP) control. The Active Filter helps
to reduce harmonics generated by the UPS into the supply
which could disrupt the operation of downstream generators
and transformers whose rating is closely matched to that of
UPS.
- advanced technology
Multi Dialog AF systems reduce harmonic distortion of the
phase and neutral currents. The Digital Signal Processor
(DSP) and the “current mode” instantly control and monitor
the input current to maintain a perfect sinewave with less
than 4% harmonic distortion
- maximum efficiency
Multi Dialog AF systems have low input distortion even at
low loads and their overall efficiency is not affected by ge-
nerator frequency variations or line impedance
- reduction of neutral current
Multi Dialog AF systems reduce the input neutrals current
by up to 3.5 times their nominal rating to help avoid over-
sizing input protections and conductors
- maximum reliability
Multi Dialog AF systems are extremely reliable. Overall UPS
performance is unaffected should the harmonic filter fail.
- excellent capabilities
input distortion: (THDi) less than 4%
input power factor: >0.99
performance: up to 93%.
Multi Dialog can also be supplied without the Active
Filter for installations less sensitive to current
harmonics.
OTHER CHARACTERISTICS
• 0.8 power factor makes Multi Dialog suitable for powering
ICT and industrial loads
• high level diagnostics: event log with 128 messages, states,
measurements and alarms - available from the built-in LCD in
several languages
• reduced noise levels: high frequency inverter bridge
• back feed protection standard: to avoid energy feeding
back into the mains supply (in compliance with CEI 11-20;
DK5600)
• power factor correction (input power factor, close to 1)
• by pass may be deactivated to allow operation as a frequency
converter (at 50 or 60 Hz)
• emergency operation: the UPS can be set to operate only
when the mains fails (for emergency lighting)
ADVANCED COMMUNICATION
• compatible with TeleNetGuard for remote maintenance
• advanced, multi-platform communication, for all operating
systems and network environments: PowerShield
2
supervision and shut-down software included, with SNMP
agent, for Windows 95, 98, NT 4.0, Me, 2000, 2003, XP,
Mac OS 9.x, X, Linux, Novell operating systems. The UPS is
supplied with a cable for direct connection to the PC (Plug
and Play)
• double RS232 serial ports
• network adapter slot for SNMP agent
• Emergency Power Off (EPO) shutdown input contact
• remote control mimic panel.
NETWORK Range