Campbell Scientific SVP48 SVP48 Surge Voltage Protector - Page 5

SVP48 Surge Voltage Protector top nut on the ground chuck and place the ring end of the ground wire on the chuck. Replace the top nut. Insert the tinned end into the open yellow/green clamp terminal, then tighten the terminal. Ground the enclosure to earth with 14 AWG or larger wire. 2.3 Attaching Sensors to the SVP48 To provide complete protection for the datalogger, all leads must pass through the SVP48. All shield wires terminate in one or more of the yellow/green clamp terminals. To connect signal or excitation leads, insert the bare end of one lead into the terminal on either side of the surge protector. Run a short length of wire from the other side to the appropriate datalogger terminal. This short length of wire should be of the same gage and insulation type as the sensor leads provided by the manufacturer. Do not use wire with PVC insulation. 3. Maintenance 3.1 Replacement Considerations When an electrical surge occurs, the surge protectors involved may need to be replaced. Incorrect measurements will indicate that replacement is necessary. With an ohmmeter, confirm that an individual protector needs replacing by measuring the resistance between a top terminal and the yellow/green terminal. An open circuit or infinite resistance indicates that the surge protector is okay. Any other resistance reading indicates that it needs replacing. 3.2 Parts List Order the SVP48 using "SVP48-X", where X is the number of surge protectors desired (up to 22 per rail). Use the following part numbers for individual replacement items only. 8206 Surge Protector 8207 Surge Protector End Plate 8208 DIN Rail 6044 Nylon Grommet 505 Mounting Screws 5725 14 AWG Ground Wire 3