The QFLEX ISOLATOR has been designed to resolve issues that often arise when large VNET systems are put into operation. It is specifically advised in situations where: the possibility that mains earth potentials exceeding +/-15V may exist between network nodes; electrical noise and interference may be present on the network cables, or wiring faults may exist on the network cable; the installer wishes to create networks that have a large “star” topology; or the network utilises screw terminal terminations.