In rural locations it is often difficult to get a good connection to a traditional broadband provider, if it is possible at all. Our customer provides broadband connections to small rural communities in Ireland which would otherwise struggle to get any type of broadband connection.
The equipment involved uses either a -48Vdc connection or 24Vdc and because of the possibility of power outages the whole system is backed up by a 24Vdc battery system which is kept charged up by all the time.
The 24vdc equipment can be sensitive to voltage fluctuations, which you may get with a battery system which is discharging, the customer uses one of our DDH300B24 units (top right f the four units in the central cabinet). This DC DC Converter smooths the voltage such that as long as the input voltage is between 19 and 36Vdc then the output will remain stable at 24Vdc 12.5A.
The remainder of the equipment requires the telecoms standard -48Vdc and this is provided by three DDH300B48 units (the other three units in the central cabinet). The DDH range of DC DC Converters has a "floating" output which means that it can be grounded such that it gives a negative voltage. This again also means that as long as the input voltage stays within the range of 19 to 36Vdc then the load will see -48Vdc 6.25A.
If you have equipment which requires a stable DC Voltage, or you need a negative voltage from a battery pack then please let us know and we will be happy to guide you to the very best product for your application.