Becker Mining South Africa has supplied 12 uninterruptible power supply (UPS) systems to a local coal mine supplier, to enhance safety and prevent unnecessary downtime.
These specially-designed UPS systems ensure uninterrupted operation of the mine’s programmable logic controller (PLC) system, particularly during power outages.
“This UPS system was developed by Becker Mining specialists, as a dependable power back-up system for the plc system, which controls critical functions at the mine. These operations include all conveyer belt safety systems installed, like gas monitoring and speed, slippage and load control instrumentation,” explains Nico de Lange, Vice President: Operations & Systems, Becker Mining South Africa. “In the event of a power outage, the PLC would not be able to function without the back-up of a reliable UPS system. The interruption of belt system and sensor monitoring would prevent normal operations and lead to costly downtime and could also become a major safety issue.”
During a power outage, the UPS system needs to supply the specified load, to ensure the electrical system continues efficient operation, for a specified time period. In this particular project, the 3.5 kVA system, with a two-hour back-up time, has been designed to supply a full load current of 15 Amp at 220 V. This ensures the PLC system, with multiple outlets, runs efficiently even in the event of a power failure.
As this PLC system consists of many electronic devices, a pure sign wave is required to reduce induced electrical noises generated from the circuit. Without this critical feature, electronic components could malfunction and become a major safety risk, also causing costly downtime.
The enclosures of Becker’s UPS systems have an International Protection rating of IP 65, which guards against the ingress of dust and jets of water. This is protection feature particularly important in arduous underground conditions.
These inter-connected UPS systems, with Ethernet and RS232 connectivity, can be controlled or remotely managed and monitored from the control-station. This means in the event of a system-failure, critical decisions can be made ahead of schedule, to prevent a disaster or unnecessary downtime.
Becker Mining South Africa offers a technical advisory and support service throughout the country to ensure total reliability of its extensive range of equipment.