Rockwell Automation 193-EC1_2_3_5, 193-ECPM,592-EC1_2_3_5 E3 and E3 Plus Solid-State Overload Relay User Manual - Manual (Page 38)

38 Rockwell Automation Publication 193-UM002I-EN-P - December 2011
Chapter 2 Installation & Wiring
• If the power cables are enclosed in a conducting jacket, the jacket must be
grounded on the line side of the sensor. The jacket must not pass through
the sensor window, but must be cut at the window and joined with a
conductor that passes outside the sensor window.
• The power system may be solidly grounded or grounded through an
impedance at its source as long as the impedance allows a magnitude of
current to flow that is within the 20 mA…5 A operational range of the E3
Plus Overload Relay.
Figure 16 - Core Balanced Ground Fault Sensor Mounting Placement
Figure 17 - Power Cable Configuration — Two Cables per Phase
Figure 18 - Ground Fault Sensor Wiring
Power
Cables
Core Balanced Ground
Fault Sensor
6x
6x
90°
L3
L1
L2
L1
L2
L3
1
1
The spacer is a short piece of cable, approximately
ten times the cable diameter in length, without
connections to any terminal.
E3 Plus Overload Relay
Cat. No. 193-CBCT_
Core Balanced
Ground Fault Sensor
L1 L2 L3
Motor
S1
S2
L1 L2 L3
1 3 5
T1 T2 T3
2 4 6
13 14 23 24 95 96 1T1 1T2
1 2 3 4 5 6