KEB COMBIVERT F5 Instruction Manual

Also see for COMBIVERT F5: INSTALLATION GUIDELINE Installation manual Instruction manual Instruction manual Installation manual

Contents

171.5.8 High Voltage ConnectionsAlways note inverter voltage, select appropriate over current protection devices,select disconnect device, and select proper wire size before beginning the wiringprocess. Wire the drive according to NFPA 70 Class 1 requirements.The correct wire gauge for each size inverter can be selected from the chartsunder Section 2.1-2.2 . The wire gauge is based on the maximum fuse rating forthe inverter. The terminal tightening torque can be found for each unit in the samecharts.Always use UL listed and CSA approved wire. Use 60/75°C copper conductorsonly for equipment rated 100 Amperes or less and use 75°C Copper Conductorsonly for equipment rated grater than 100 Amperes! Use minimum 300V rated wirewith 230V systems and minimum 600V rated wire with 480V systems.To prevent coupling high frequency noise, the following wires must be spatiallyseparated from each other a minimum distance of 8 inches (20 cm) when theyare laid parallel to each other :- AC supply power and motor lines not connected to inverters- motor lines connected to inverters- control and data lines ( low-voltage level < 48 V )When using EMI filters, use only the wire provided with the filter to connect thefilter to the inverter. Do not add additional wire between the filter and the inverteras this will have a negative effect on the operation of the filter.1.5.9 Ground ConnectionsWhen working with high frequencies ( > 1kHz ) and power semiconductors it isrecommended to make all ground connections with large exposed metal surfacesin order to minimize the ground resistance.The metal sub-plate the inverter is mounted on is regarded as the central groundpoint for the machine or the equipment. For best results use an unpainted,galvanized or plated sub-panel.An additional high frequency ground wire should be connected between theinverter and the sub-panel. Use a stranded wire equal in size to the main lineconductor or a thick ground strap. This is in addition to the ground wire requiredby NFPA 70, UL 508, CSA 22.1All ground connections should be kept as short as possible and as close aspossible to the ground system, sub-panels.If other components in the system exhibit problems due to high frequencydisturbances, connect an additional high frequency ground wire between themand the sub-panel.The EMI filter should be mounted to the drive or as close as possible to theinverter and on the same sub-panel as the inverter. Good metallic surface contactto the sub-panel is required to provide adequate high frequency grounding of thefilter.General