GE Industrial Solutions AF-650 GP General Purpose Drive (460_575_690V 125HP and above) - Manual (Page 57)

Unit Size 6X Requirements
Unit Size 61 and 63 requirements: Motor phase cable quantities must be 2, 4, 6, or 8 (multiples of 2) to obtain equal amount of wires attached to both inverter
module terminals. The cables are required to be equal length within 10% between the inverter module terminals and the first common point of a phase. The
recommended common point is the motor terminals.
Unit Size 62 and 64 requirements: Motor phase cable quantities must be 3, 6, 9, or 12 (multiples of 3) to obtain equal amount of wires attached to each inverter
module terminal. The wires are required to be equal length within 10% between the inverter module terminals and the first common point of a phase. The
recommended common point is the motor terminals.
Output junction box requirements: The length, minimum 2.5 meters, and quantity of cables must be equal from each inverter module to the common terminal
in the junction box.
3.6.8 Drives with factory installed Brake Chopper option
The connection cable to the brake resistor must be screened and the max. length from frequency converter to the DC bar is limited to 25 metres (82 feet).
Terminal No. Function
81, 82 Brake resistor terminals
The connection cable to the brake resistor must be screened. Connect the screen by means of cable clamps to the conductive back plate at the frequency converter
and to the metal cabinet of the brake resistor.
Size the brake cable cross-section to match the brake torque.
Please note that voltages up to 1099 VDC, depending on the supply voltage, may occur on the terminals.
3.6.9 Load Sharing
Terminal No. Function
88, 89 Loadsharing
The connection cable must be screened and the max. length from the frequency converter to the DC bar is limited to 25 metres (82 feet).
Load sharing enables linking of the DC intermediate circuits of several frequency converters.
Please note that voltages up to 1099 VDC may occur on the terminals.
Load Sharing calls for extra equipment and safety considerations. For further information, see load sharing Instructions MI.50.NX.YY.
Please note that mains disconnect may not isolate the frequency converter due to DC link connection
3.6.10 Shielding against Electrical Noise
Before mounting the mains power cable, mount the EMC metal cover to ensure best EMC performance.
NOTE: The EMC metal cover is only included in units with factory installed A1/B1 RFI Filter option..
AF-650 GP High Power Operating Instructions
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