AC AND DC POWER SYSTEMS WITH BATTERY BACKUPThe power system to be backed up and the origin of power can be either direct current DC or alternating current AC. The energy storage is DC, stored in electrical batteries of different sizes and amounts depending on the required power during a specified time period.
The load level of the rectifier modules is determined by the system controller and the load is evenly distributed between the modules. Should one rectifier module fail, the load level is automatically increased for the remaining modules and an alarm is forwarded.
Elcon Power Systems are very reliable with a mean time between failures of more than 40 years.
BATTERY BACKUPThe power system has a battery backup to ensure proper equipment operation during power outages. The battery bank consists of one or several battery strings depending on the required capacity and backup time.
Available battery types:
- sealed lead acid
- flooded lead acid
- any other type.
Every battery string is equipped with a battery MCB or a switch fuse.
Converter modules allow multiple voltage outputs to be available from a single power system. Typical conversions are from 110 V to 24 V or from 110 V to 48 V.
- high efficiency of up to 96%, reducing operating costs.
- hot swappable and exchangeable without shutting down the system
- transfer time 0 ms thanks to DPS controlled dynamic source switching from AC to DC and vice versa
The system controller has a high-resolution touchscreen LCD display for system configuration. The system live signal data and system status can be viewed via the display. There is an integrated USB host for local firmware upgrades, configuration updates and system restoration. Modbus communication protocol enables supervision and communication of alarms and live analogue and digital signals using Modbus protocol.
The standard IP (Ingress Protection) enclosure rating of the system cabinet is 21 or optionally higher if required. The default cable entry is through the cabinet roof. Optionally, the cable entry can be through the cabinet bottom and the cabinet should usually be equipped with a plinth. To ensure proper cooling, all cabinets are equipped with at least two cooling fans. As option these cooling fans can be equipped with condition monitoring. The size of the system cabinet depends on the amount of equipment, two commonly used sizes are 2000 x 600 x 600 (H x W x D) and 2000 x 800 x 600 (H x W x D). In cases where the cabinet door must be smaller, the 2000 x 1000 x 600 (H x W x D) cabinet with two 500 mm doors is an alternative.
Alternative cabinet sizes and other options are available, including wall mounted cabinets and transparent cabinet doors.
The OEZ DC miniature circuit breakers (MCB) are intended for over current protection of services and similar installations with rated currents from 0.2 A to125 A.
As option, switch fuses, fuse-links, cylindrical fuses or other types of fuses can be used to customize the distribution.
INDIVIDUAL OUTPUT EARTH FAULT MONITORING - LCM
The leakage current monitoring (LCM) unit indicates current differences (leakage current) between the incoming and outgoing current of the system output port. Each LCM unit has six independent measuring channels.
- Voltage transducers
- Low voltage disconnection (LVD) for batteries
- Low voltage disconnection (LVD) for load
- Cabinet temperature sensor
- Remote and continuous battery monitoring
- Remote and continuous power system condition monitoring and surveillance.