- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
Link copied. Please paste this link to share this article on your social media post.
2025-01-14
01:23 AM
Earth leakage relay for individual Roller Table Motors (in Steel Plant) which are driven by VVVF drive in a group drive mode
Customer is asking for individual motor earth fault / leakage protection for roller table application in a steel plant. These motors are of small KW rating ( around 5.5kW) and several motors are fed by a single VVVF drive .
In case we use standard earth leakage relays with CBCT at outgoing of each motor , then the relays will malfunction due to PWM output ( non sinusoidal AC ) leading CBCT core saturation.
What is the solution ?
Labels
- Labels:
-
Application cases
Replies 0
![](/skins/images/1684DA6B28209FDCB6A19B3469F49C2F/responsive_peak/images/icon_anonymous_message.png)
![](/skins/images/1684DA6B28209FDCB6A19B3469F49C2F/responsive_peak/images/icon_anonymous_message.png)