This set from a Dutch telecom provider was installed in 2006 and the controller needed to be replaced. ABATO's mechanics have overhauled and modernized these. The NSA was taken out of operation and the control box was subsequently emptied. A new control has been installed and wired. Binary sensors are wired. New (control current) cabling was connected and after that the NSA was put into parallel operation again at night. The generator has been tested Net-parallel and an emergency power test has been performed.