Rockwell Automation 193-EC4 EC4 Current Monitoring Relay User Manual - Manual (Page 25)

26 Rockwell Automation Publication 193-UM011A-EN-P - September 2010
Chapter 2 Installation and Wiring
Fuse Coordination The following table illustrates the Type I and Type II fuse coordination when
used in conjunction with Bulletin 100-C contactors.
Typical Motor Connections Three-Phase Direct-on-Line (D.O.L)
The following figure illustrates the EC4 Current Monitoring Relay typical motor
connections in a three-phase D.O.L application.
Table 9 - IEC Short-Circuit Ratings
Cat. No. Prospective Current
I
r
[A]
Conditional Short
Circuit Current I
q
[A]
Maximum Voltage
[V]
193-EC _ _B 1,000 100,000 690
193-EC _ _D 3,000 100,000 690
193-EC _ _E 5,000 100,000 690
Table 10 - Type I and Type II Fuse Coordination with 100-C and 100-D Contactors
Overload
Cat. No. Contactor
Cat. No. Prospective
Current
I
r
[A]
Conditional
Short Circuit
Current
I
q
[A]
Type I
Class J or CC
[A] Type II
Class J or CC
[A]
193-EC _ _B 100-C09 1,000 100,000 20 20
100-C12 1,000 100,000 25 25
100-C16 1,000 100,000 35 35
100-C23 3,000 100,000 40 40
193-EC _ _D 100-C30 3,000 100,000 60 60
100-C37 3,000 100,000 80 80
100-C43 3,000 100,000 90 90
193-EC _ _E 100-C60 3,000 100,000 125 125
100-C72 5,000 100,000 150 150
100-C85 5,000 100,000 175 175
ATTENTION: Select the motor branch circuit protection that
complies with the National Electrical Code and any other
governing regional or local codes.