Karel DS200, Техническое справочное и монтажное руководство

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DS Series PBX Technical Reference And Installation Guide
47
IV.3.C. THE EXTERNAL POWER BLOCK
In case of large capacity DS200L systems require high capacity battery groups, external
power supplies can be used instead of SPS200 power supplies.
For proper power regime, in addition to external power supplies the capacities of the
batteries must be selected appropriately for the system capacity.
External Power Block feeds DCC block, power inverter and the SPS248 power supplies
which are at the TW200 towers by -48V. Cabling is to be made from external power supply
to each tower and to other units.
IV.3.C.1. THE POWER INVERTER
For small capacity systems, in case system is fed by SPS200 power supplies, PCU Block
and network switch can get the required 220V AC voltage from the electricity network. In this
case, there will be no need for power inverter.
For large capacity systems, system gets -48V voltage from the external power supply, -48V
coming from External power block is converted to 220V AC and transmitted to PCU200
block, redundant PCU200 block and network switch. Power inverters are located in the 19”
cabinet. Optionally, redundant power inverter can be installed to the system. At the systems
which have redundant power inverter, in case any problem with any of the power inverter
occurs, the redundant power inverter is put into operation. Thus, PCU200 blocks and
network switch get the 220V AC input from the redundant one and keep operating without
any problem.
Inverter and redundant one for DS200L system are shown below.