Allen-Bradley E300 - Three-Phase Direct On-Line (DOL) and Single-Phase Full-voltage

62 Rockwell Automation Publication 193-UM015E-EN-P - October 2015
Chapter 2 Installation and Wiring
Three-Phase Direct On-Line (DOL) and Single-Phase Full-voltage
The following wiring diagram illustrates the E300 relay typical motor
connections in a three-phase DOL and single-phase full-voltage applications.
Figure 48 - E300 DOL and Single-Phase Full-voltage Connections
External Line Current
Transformer Application
Current Transformer Ratio
The following E300 relay sensing module catalog numbers can be used with step
down current transformers:
• 193-
ESM-IG-30A-E3T
• 193-ESM-IG-30A-T
• 193-ESM-IG-30A-P
• 193-ESM-I-30A-E3T
• 193-ESM-I-30A-T
• 193-ESM-I-30A-P
• 193-ESM-VIG-30A-CT
CT Primary (Parameter 263) and CT Secondary (Parameter 264) allows you to
identify the turns ratio of the step down current transformers in use. Based on
these two configuration parameters, the E300 relay automatically adjusts the
measured current. Use the primary current for your FLA settings.
L1
2/T1
4/T2
6/T3
M
T1
Three-Phase Direct-On-Line
Single-Phase Full-Voltage
T2
L2
E300
L1
2/T1
4/T2
6/T3
M
T1
T2
T3
S.C.P.D.
L2
L3
S.C.P.D.
E300