November 2004Electrical Power & Protection
Integrated Solutions
Mining (Industry)
Phoenix Contact has now extended its range of power supply products to include the maintenance-free capacitor-based Quint Buffer modules. Providing a power supply of 20 A, they increase the power failure bridging time by 200 ms. If the power requirement is less, the time increases proportionately.
In the case of supply failures, all relevant process data is stored and controllers are shut down in a controlled manner, thus ensuring the plant can restart fault-free. Phoenix Contact's test results show that the buffer module buys sufficient time to permit the storage of extensive process data on a customary industrial PC. The buffer module also provides an energy store used for peak loads and to trigger fuses.
Thanks to the decoupled input, the connected consumers can be divided into buffered and unbuffered loads. The buffer time, which depends on the output current, increases drastically if the important consumers are the only ones protected. The decoupled input protects the connected consumers from faults on the internal network. Some of the module's other benefits include its space-saving design with the dimensions measuring 64 x 130 x 125 mm as well as the easy installation.
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