82 EAV64301 01/2015
Operation on an IT or Corner Grounded System
Definition
IT system: Isolated or impedance grounded neutral. Use a permanent insulation monitoring device
compatible with nonlinear loads, such as an XM200 type or equivalent.
Corner grounded system: System with one phase grounded.
Operation
The drives have a built-in EMC filter. As a result they exhibit leakage current to ground. If the leakage
current creates compatibility problems with your installation (residual current device or other), then you can
reduce the leakage current by removing the screws as shown below. In this configuration the product does
not meet the EMC requirements according to the standard IEC 61800-3.
Setting
Apply the following instructions to set the drive to operate or not on an IT system
NOTE:
z Use only the screws supplied.
z Do not operate the drive with setting screws removed.
Setting For Frame Size 1 Products
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
Read and understand the instructions in Safety Information chapter before performing any procedure
in this chapter.
Failure to follow these instructions will result in death or serious injury.
Step Action
1 Remove the front cover (seepage73)
2
For operation on an IT system position the screws as shown on detail
3
For operation on a non- IT system position the screws as shown on detail
4 Refit the front cover
To Next Page
Loading...
