50 Rockwell Automation Publication 193-UM015D-EN-P - February 2015
Chapter 2 Installation and Wiring
Figure 37 - External Current Transformer Connection
The E300 Electronic Overload Relay voltage-based sensing modules support a
wide variety of power systems. Table 15
lists the power systems supported by the
specific sensing module.
Table 15 - Supported Power Systems
ATTENTION: The improper selection of a current transformer can result in the
E300 Electronic Overload Relay reporting inaccurate motor operational data and
possible motor damage. The selected current transformer must be rated for
protective relaying applications.
NEMA
L1 L2
L3
L1/1 L2/3 L3/5
T1/2 T2/4 T3/6
M
T1
T2
T3
IEC
L1 L2
L3
K1
L1/1 L2/3 L3/5
T1/2 T2/4 T3/6
E300
M
Primary
Current
Transformers
Primary
Current
Transformers
E300
Catalog Number Connection Type Power System
193-ESM-VIG-__-__
592-ESM-VIG-__-__
Direct
Single Phase
Delta
Wye
Grounded B Phase Delta
193-ESM-VIG-30A-CT
Direct
Single Phase
Delta
Wye
Grounded B Phase Delta
3 PT
Delta
Wye
2 PT
Single Phase
Open Delta
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