Results – Rockwell Automation System Design for the Control of Electrical Noise User Manual
Page 108
Publication GMC-RM001A-EN-P — July 2001
A-6
Noise Control Supplement
Method
•
Both 24V dc commons were grounded to the panel (refer to
Figure A.4).
•
500mm parallel wire runs were set up at varying distances apart
(separation) and different heights above the panel (wire to panel).
•
Peak voltages were measured on the victim wire referenced to the
panel.
Figure A.4
Wire segregation test set-up
Results
The results of the segregation testing is shown in the table below.
Wire to
panel
Victim
wire
Source
wire
Steel wall
Separation
Plated steel panel
Source and Victim
Separation:
Wire to Panel Separation:
3.0 mm (0.1 in.)
3.0 mm (0.1 in.)
3.0 mm (0.1 in.)
40 mm (1.6 in.)
40 mm (1.6 in.)
40 mm (1.6 in.)
24V dc Resistive
Load
24V dc Contactor 240V ac
Contactor
24V dc Resistive
Load
24V dc Contactor 240V ac
Contactor
3mm (0.1in)
500mV
10V
10V
500mV
20V
20V
25mm (1in)
100mV
500mV
200mV
100mV
5V
2V
50mm (2in)
100mV
200mV
200mV
100mV
2V
2V
100mm (4in)
100mV
200mV
200mV
100mV
1V
1V
200mm (8in)
100mV
100mV
100mV
100mV
200mV
200mV
3mm + Steel wall
100mV
500mV
100mV
100mV
500mV
500mV
25mm + Steel wall
100mV
100mV
100mV
100mV
500mV
200mV