The Internet of Things (IIoT) offers unprecedented possibilities for industries. Stay ahead with EcoStruxure™ Plant and Machine.Learn more
...with the EcoStruxure™ Facility Expert (formerly known as Facility Hero) app in hand! Discover how you can optimize your maintenance efforts today.Learn more
Access tailored services, 24/7 self-service and expert help. Anywhere, anytime, any project.Discover now
The story behind the Shedd Aquarium, a smart, sustainable facility that connects people to animals, with EcoStruxure™.Discover how
Welcome to the Schneider Electric Global Website×
Goals and Symptoms
ATV28 trips with SCF, driving a submerged pump. ATV38 runs without any problem in the same case!
Facts and Changes
ATV28 submerged pump we often have this problems with ATV28
Causes and Fixes
This fault is detected by the ZCT (zero current transformer).
Trip level is a differential current > 2.5 A
But if there is a 2.5A leakage current (or unbalance between phase)
So we advise to check the earth and unbalanced current with an oscilloscope at the moment of the fault.
If the cable is shielded check that it is correctly connect (no high current circulation in the shield).
Test with disconnecting one side of the shield.
Test with a motor inductance (may be the capacitance of cable and motor is high and generate leak current peak.
Check that the supply voltage is stable and at the good value when the fault occurs.
Concerning the ATV38, it's not similar process.
Sign up for all the latest solutions, offers and best practices straight to your inbox.
We are excited that you have joined the group. You will receive your welcome email soon describing the program and what to expect in the upcoming weeks. Enjoy!