Siemens ST750 - Mains Supply

ST750 GENERAL HANDBOOK
667/HB/33750/000 Page 21 Issue 6
Conflict System
Main and Secondary Processors
Self Testing
Physical Hardware
CPU Card
PCB (244mm x 228mm)
Phase Drive Card
PCB (253mm x 235mm)
2.3 MAINS SUPPLY
The following supply voltages may be used:
Nominal
Voltage
Minimum
Voltage
Maximum
Voltage
100-240
85
264
It is recommended that the signals are supplied at the nominal mains voltage during
Bright. I.e. For a 200V nominal supply, use 200V transformer/bulbs.
Note
THE PROSPECTIVE SHORT CIRCUIT CURRENT OF THE
SUPPLY MUST NOT EXCEED 16,000 AMPS
Frequency:
50Hz 2Hz or
60Hz 2Hz
Mains Brownout:
Continues operating with up to 50ms loss of mains.
Mains Fail:
Restarts without operator intervention.
Battery Support:
Primary cell Lithium battery provides support for the
following during power failures.
(a) Clock Synchronisation (programmable up to 31
days).
(b) Timing Data (greater than one year).
A large capacitor provides support for a minimum of 4
hours if the battery has failed or is removed for
replacement.
Dimming Voltage:
120V, 140V, 160V RMS **See Note 1
Solar Cell Input:
Dimming cannot be provided at mains supplies below
200V.
Solar input operating voltages are as follows:
Bright to Dim > 80V RMS
Dim to Bright < 40V RMS