Rockwell Automation 1420 PowerMonitor 500 - Manual (Page 26)

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Rockwell Automation Publication 1420-UM001D-EN-P - September 2013
Chapter 3
Unit Configuration
Configuration Flow Chart
• 10 CHANGE PAS: this function lets you modify the
PASS value with a new value (from 0…9999).
• 20 BACKLIGHT: adjusts backlight time from
0…255 minutes (0 = always on).
• 50 SYSTEM: this function lets you select the type of
electrical system.
Refer to pages
17 … 18 for descriptions and wiring
diagrams corresponding to the system type
designations, such as, 3P and 3P.n.
• 60 CT RATIO: this function lets you select the value
of the CT ratio (primary/secondary ratio of the
current transformer being used). Example: if the CT
primary (current transformer) has a current of 300 A
and the secondary a current of 5 A, the CT ratio
corresponds to 60 (300 divided by 5).
• 70 PT RATIO: this function lets you select the value
of the PT (VT) ratio (primary/secondary ratio of the
potential/voltage transformer being used). Example:
if the primary of the connected PT is 20 kV and the
secondary is 100V, then the PT ratio corresponds to
200 (20,000 divided by 100).