Installation instructions – Rockwell Automation 193/592-EC1/EC3/EC5 E3 and E3 Plus Solid-State Overload Relay - Quick Reference User Manual
Page 12
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Publication 193-QR003B-EN-P - October 2009
Installation Instructions
Cat. No. 193-EC_ZZ Overload Relays are designed to be installed in cat. no. 193-ECPM2
panel mount adapters and connected to separately mounted current transformers. For a panel
mount adapter assembly, refer to the instructions included with the panel mount adapter. The
E3 Overload Relay must be mounted a distance equal to, or greater than, six times the cable
diameter (including insulation) from the nearest current-carrying conductor or current
transformer. For applications employing multiple conductors per phase, the diameter of each
cable should be added and multiplied by six to determine the proper placement distance for
the E3 Overload Relay.
Figure 6: Cat. No. 193-EC_ZZ Overload Relay Mounting Placement
IMPORTANT
Placement of the E3 Overload Relay closer than the recommended
distance of six times the cable diameter may compromise its current
reporting and protection capabilities.
6x
6x
OR
Primary
Current
Transformers
E3 Overload
Relay
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