![background image](http://html1.mh-extra.com/html/eaton/digitrip-3000-series/digitrip-3000-series_installation-operation-and-maintenance-instructions_3888980040.webp)
Instruction Leaflet
DT3000
Page 36
Effective: Date 07/02
I.B. 17555D
For more information visit:
www.cutler-hammer.eaton.com
Supersedes I.B. 17555C dated November 1999
TABLE 6.1 TROUBLESHOOTING GUIDE
Symptom
Probable Cause
Possible Solution(s)
Reference
•
Protective Relay’s Control
Power is Deficient or
Absent
•
Verify that Control Power is Connected
Between TB1 -5 and B1 -6 and that it is
within Specifications
•
Figure
3-1
and
Paragraph 2-
3
Operational LED is
Off
•
Protective Relay is
Malfunctioning
•
Replace the Protective Relay
•
Paragraph
6-
3
•
Protective Relay’s Control
Power is Deficient or
Absent
•
Verify that Control Power is Connected
Between TBI-5 and TBI-6 and it is within
Specifications
•
Figure
3-1
and
Paragraph 2-
3
Operational LED is
On but Does not Blink
•
Protective Relay is
Malfunctioning
•
Replace the Protective Relay
•
Paragraph
6-
3
Operational LED
Blinks Red
•
Internal Problem Detected
•
Press Reset Pushbutton
•
Reprogram Set points
•
Replace Protective Relay if Symptom
Persists
•
Paragraph
2-
2.1 and 3-2
•
Paragraph
3-
3.2
•
Paragraph
6-
3
Operational LED is
NOT Definite Red or
Green
•
Internal Problem Detected
•
Press Reset Pushbutton
•
Reprogram Set points
•
Replace Protective Relay if Symptom
Persists
•
Paragraph
2-
2.1 and 3-2
•
Paragraph
3-
3.2
•
Paragraph
6-
3
•
Set points are Invalid
•
Reprogram Set points
•
Paragraph
3-
3.2
“PGRM” Appears in
Settings Display
Window
•
Check sum did not Match
•
Replace Protective Relay if “PGRM”
Reappears After Saving Settings
•
Paragraph
6-
3
•
There was an Error During
Set point Programming
•
Make Sure DIP switch S2 is in Correct
Position
•
Table
5.1
“ERR” Appears in
Setting
•
There was an Error While
in the Test Mode
•
More than 0.1 Per Unit of Current Cannot
Flow While in Test Mode
•
Paragraph
3-
3.3
“RAM” Appears in
Settings Display
Window
•
An Internal RAM Check
Failed
•
Remove Power from the Protective Relay
and then Reapply Power - If the Symptom
Persists, Replace the Protective Relay
•
Paragraph
6-
3
•
Incorrect CT Ratio used in
Equipment
•
Verify CT Ratio in Equipment
•
Paragraph
1-
3 and
Paragraph 3-
3.2
•
Incorrect Current Wiring
•
Verify Connections on CT Wiring
•
Figure
3-1
•
Incorrect
System
Frequency Programmed
•
Set to Correct Frequency
•
Paragraph
3-
3.2
Current Readings
Appear Incorrect
•
Breaker Contact to trip
unit not functioning
•
Insure Proper Contact Type is Connected
to Protective Relay and Functioning
•
Figure
3-1
•
Incorrect
Settings
•
Check
Settings
•
Paragraph
3-
3.2 and Table
5.1
•
Phase Zone Interlocking
not used and Jumper
Missing
•
Check for Phase Zone Interlocking Jumper
Between TB1 -13 and TB1 -14
•
Figure
3-1
Circuit Breaker Trips
Much Faster than
Expected on Inverse
Time Overcurrent
•
Ground Zone Interlocking
not Used and Jumper
Missing
•
Check for Ground Zone Interlocking
Jumper Between TB1 -11 and TB1 –12
•
Figure
3-1