Technical data

1 Scope
MASTERGUARD Series SIII
UPS Systems from 60 to 800 kVA
2
2 System description
MKA4CAT0UKSIII/Rev. 11-11/2004/UK
and without interruption, upon failure
or degradation of the commercial AC
source. The continuity of conditioned
electric power shall be delivered for
the time period defined by the battery
system. The inverter, and other
mission critical converters within the
UPS, are driven by vector control
algorithms (covered by patents 95
P3875, 95 P3879 and 96 P3198)
running on dedicated digital signal
processor (DSP) systems.
This specification describes a
continuous duty three-phase, solid
state, insulated gate bipolar transistor
(IGBT) uninterruptible power supply
(UPS) system. The UPS shall
automatically provide continuity of
electrical power, within defined limits
This specification describes a static
UPS in intelligent double conversion
configuration, as shown in Figure 1.
The systems shall operate on a
microprocessor-based IGBT inverter.
The vector control technology will
enhance the performance of the
inverter. In order to increase system
redundancy, an independent electronic
static bypass shall be integrated into
the UPS. By adding system
components, such as parallel kits,
central output cubicles, CROSS
switches, safety and disconnecting
devices, system bypass switches, in
addition to software and
communications solutions, it shall be
possible to set up elaborate systems
to ensure the complete protection of
the loads.
2.1 The system
The UPS shall provide high quality AC
power for electronic equipment loads
and shall offer the following features:
• Increased power quality
•Full noise rejection
•Full compatibility with all types of
loads
•Power blackout protection
•Full battery care
The UPS shall automatically provide
continuity of electrical power, within
defined limits and without interruption,
upon failure or degradation of the
commercial AC source. The duration of
autonomy (i.e. back up power time) in
the event of network failure shall be
determined by the battery capacity.
Figure 1. Series SIII single block system
Maintenance Bypass
Fuse
Battery Fuse
Battery Fuse
Battery System
LIFE.net
Connectivity
bundled.
Basic signalling
Optional remote
Connectivity
(IP; SNMP; J-BUS;
PROFIBUS;Etc.)
Fuse
Rectifier Inverter Electronic
Bypass switch
Electronic
Battery switch
Battery switch
Reserve switch
Output switch
Load
switch
Reserve
Mains
Regular
Mains
Tecnico-SIII-MG 10-11-2004 8:22 Pagina 2