Start-Up And Functional Testing; Pre-Start; Safety Inspection - GE AF-650 GP Design And Installation Manual

Start-up and Functional Tes...

3 Start-up and Functional Testing

3.1 Pre-start

3.1.1 Safety Inspection

WARNING
HIGH VOLTAGE
If input and output connections have been connected improperly, there is potential for high voltage on these terminals.
If power leads for multiple motors are improperly run in same conduit, there is potential for leakage current to charge
capacitors within the frequency converter, even when disconnected from mains input.
•
For initial start-up, make no assumptions about power components.
•
Follow pre-start procedures.
Failure to follow pre-start procedures could result in personal injury or damage to equipment.
1. Switch off the Input power to the unit and ensure that it is locked out. Do not rely on the frequency converter
disconnect switches for input power isolation.
2. Verify that there is no voltage on input terminals L1 (91), L2 (92), and L3 (93), phase-to-phase, and phase-to-
ground.
3. Verify that there is no voltage on output terminals 96 (U), 97 (V), and 98 (W), phase-to-phase, and phase-to-
ground.
4. Confirm continuity of the motor by measuring ohm values on U–V (96–97), V–W (97–98), and W–U (98–96).
5. Check for proper grounding of the frequency converter and the motor.
6. Inspect the frequency converter for loose connections on terminals.
7. Record the following motor nameplate data:
7a Power
7b Voltage
7c Frequency
7d Full load current
7e Nominal speed.
These values are needed to program the motor nameplate data later.
8. Confirm that the supply voltage matches the voltage of the frequency converter and the motor.
MG35M402
AF-650 GP™ Design and Installation Guide
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