Grounding, Wiring diagrams, Attention – Rockwell Automation 193/592-EC1/EC3/EC5 E3 and E3 Plus Solid-State Overload Relay - Quick Reference User Manual
Page 10
10
Publication 193-QR003B-EN-P - October 2009
Grounding
The following grounding recommendations are provided to ensure electromagnetic
compatibility compliance during installation:
•
The earth ground terminal of the E3 Overload Relay shall be connected to a solid
earth ground via a low-impedance connection
•
Installations employing an external ground fault sensor shall ground the cable shield
at the sensor with no connection made at the E3 Plus Overload Relay
•
The PTC thermistor cable shield shall be grounded at the E3 Plus Overload Relay
with no connection made at the opposite end
Wiring Diagrams
Figure 5: Three-Phase D.O.L & Single-Phase Wiring Diagrams
ATTENTION
!
When working on energized circuits, do not rely on the voltage and
current information provided by the E3 and E3 Plus for personal
safety. Always use a portable voltage or current measurement device
and measure the signal locally.
E3/E3Plus
L 1
L 2
L 3
2 /T 1
4 /T 2
6 /T 3
E3/E3Plus
L 1
L 2
L 3
2 /T 1
4 /T 2
6 /T 3
L 1
2 /T 1
4 /T 2
6 /T 3
2 /T 1
4 /T 2
6 /T 3
2/T1
4/T2
6/T3
M
T1
E3/E3Plus
L 1
2/T1
4/T2
6/T3
M
T1
T2
T3
S.C.P.D.
Three-Phase Direct-On-Line
Wiring Diagram
Single-Phase Full-Voltage
Wiring Diagram
T2
L 2
L 3
L 2
E3/E3Plus
L 1
L 2
L 3
Voltage Input Module
(For 193/592-EC5 only)
L 1
L 2
Voltage Input Module
(For 193/592-EC5 only)