rQx
Lifetime Supporting Member
Hi,
I'm currently trying to understand this product. A customer has asked if we can incoorporate it in a system he will be offered. The system only consist of a soft start and a VFD. As I understand this is an electronic overload relay with inteligence. When I downloaded the neet little manual on 750 pages I found the following:
The E300 relay can be used with the following across the line starter applications:
• Non-reversing starter
• Reversing starter
• Wye (Star) / Delta starter
• Two-speed motors
• Low and medium voltage with two or three potential transformers
• With or without Phase current transformers
• With or without zero-sequence core balanced current transformer
First of all I don't think that neither a VFD or a Soft start is a "across the line" starter. So this product doesn't seem compatible with it. However I don't quite understand the three last sentences.
I guess that when I use a VFD maybe they don't need it since they can also communicate with it and get fault data.
On the lower series of this motor protection (193-EC1 to EC5 ) it says on Allen Bradley homepage that "Variable Frequency Drive (VFD) Compatible"
Since the pdoruct range of the E300 is up to 200A I would guess it would be quite common to use a VFD or soft start on these motors.
If anyone have had any experience with this series I would be glad to get some input.
I'm currently trying to understand this product. A customer has asked if we can incoorporate it in a system he will be offered. The system only consist of a soft start and a VFD. As I understand this is an electronic overload relay with inteligence. When I downloaded the neet little manual on 750 pages I found the following:
The E300 relay can be used with the following across the line starter applications:
• Non-reversing starter
• Reversing starter
• Wye (Star) / Delta starter
• Two-speed motors
• Low and medium voltage with two or three potential transformers
• With or without Phase current transformers
• With or without zero-sequence core balanced current transformer
First of all I don't think that neither a VFD or a Soft start is a "across the line" starter. So this product doesn't seem compatible with it. However I don't quite understand the three last sentences.
I guess that when I use a VFD maybe they don't need it since they can also communicate with it and get fault data.
On the lower series of this motor protection (193-EC1 to EC5 ) it says on Allen Bradley homepage that "Variable Frequency Drive (VFD) Compatible"
Since the pdoruct range of the E300 is up to 200A I would guess it would be quite common to use a VFD or soft start on these motors.
If anyone have had any experience with this series I would be glad to get some input.