Tmac® Safe-Logger - MEN Voltage Recorder
The Safe-Logger is a mains-powered unit used to measure voltage levels present on the MEN earth connection in a customer's premises. The unit is specifically designed for customer service and supply quality investigations in residential areas. (commonly known as «tingles» investigation.) The Safelogger may be used on the LV installation supplied from a SWER (single wire earth return) transformer. The Safe-Logger should NOT be connected to the SWER HV earth under any circumstances.
Earth spike with 10 m of cable