This video quickly demonstrates the steps to locate and repair a hidden ground fault in the wiring of a submersible pump motor. As always, never attempt to w...

2024年4月19日 · Disconnect the motor wiring (U/T1, V/T2, W/T3) from the drive. Power up the drive and run without the motor connected. If a fault occurs, the problem is internal to the VFD, which will need to be repaired or replaced. If no faults occur, check all connections, cabling, splices, and/or external devices between the drive and motor.

2023年8月1日 · I have an Altivar 630 drive running a 300hp motor on a vertical turbine water pump. Drive was a replacement for an Altivar 71 that lost an IGBT and output board before my tenure and the new drive was commissioned by Schneider factory techs last year.

2007年8月13日 · If it's tripping the GFI then there's current leakage to ground. A GFI outlet or breaker measures the current between HOT (the black wire) and ground. If the pump's wired incorrectly or if water is getting into the electric bits then …

2022年8月23日 · Since the pump is located in the well, ensuring the motor is functional is highly recommended prior to the installation. This can be done by measuring and testing the winding resistance and insulation resistance, which determine if the motor is defective. These tests serve as a troubleshooting tactic for both new and used motors.

2018年12月26日 · Here we explain how to check voltage, current, resistance to help diagnose well pump problems such as tripping breakers, blown fuses, weak pump performance or no water delivery from a well water pump.

2018年5月24日 · How to Fix: Blown fuse or breaker: Clean out the strainer and ensure it is free from obstructions which could clog the suction inlet. Starter overheating: Correct cause of thermal overload and reset the motor. Low line current: Inspect lines and fix the problem. Motor damaged: Check for physical damage to motor, repair, or replace as needed.

2020年9月15日 · DC Pump Motor Fails to Start After Running. Potential Cause. Tripped circuit breaker or fuse; A shorted armature; Failed or defective controller; Worn brushes; How to Fix It. If the pump has proper volts at the motor but doesn’t run, the motor may be bad or …

2020年8月14日 · When looking to test a submersible pump motor, first test the unit with the electrical cable still connected at the pump end but completely disconnected from the power supply. If a fault or weakness is found, separate the supply cable from the pump by opening the pump and disconnecting the motor winding leads from the cable conductors.

If the motor keeps running with stator faults, a high current will flow through the windings where the problem is located. This high current generates heat which further degrades winding insulation and causes short-circuit between the windings and eventually products a phase-to-ground failure. The motor will fail quickly after that.