- 134 -
Measurements
»
Analog Values
»
RMS Current
1.
Phase and earth current RMS momentary values are monitored in this region. Values are given in
amperes.
2.
Thermal
Θ
(heating percentage) values are monitored in this region. The thermal heating
percentage shown here is the cumulative evaluation made by using the set parameters and RMS
current measurements. Thermal
Θ
can be reset by clicking the
Reset
button; but it must be kept
in mind that resetting the Thermal
Θ
under normal service conditions may result in protection
errors.
3.
LED Status
window monitors both the positions of the fixed physical LEDs, placed at the front face
of CPM 311; and the programmable virtual LEDs, which can be accessed by pressing Reset button
once while at any menu. The window enables users to see the explanations of the LEDs hereby
being monitored and the position of these LEDs via color graphics. The
LED Conditions
window on
the sample picture above represents that the relay is being supplied by the auxiliary source
healthily; while there are no tripping, alarming or failure detections.
4.
Input Status
window displays the actual assignments made to the 5 programmable inputs, and
the activity on the inputs at that time. If any of the inputs are activated, the activation is
announced to the user via red color on the virtual LEDs of the related inputs. Similarly, if no inputs
are active, there will be no active LEDs of inputs monitored. The
Input Status
window on the
sample picture above states that;
CB Position
function is assigned to the first input,
52a
and
52b
functions are assigned to the second and third inputs respectively, and the other inputs are left
passive. The window also tells that none of the inputs (1-5) are active.
5.
Output Status
window displays the actual assignments made to the 2 programmable outputs plus
trip and watchdog outputs and the activity of those at that time. The activity display method of
outputs are similar to input status
’;
the active output is indicated by a red color virtual LED. The
Out
put Status
window on the sample picture above states that; the programmable outputs (1-2)
and trip relay (T) are inactive, and the watchdog relay (W) is closed
–
as expected when there are
no internal errors or auxiliary supply shortages.
LED, input and output conditions windows appear on any submenus of
Measurements
tab; thus,
the explanations hereby given will not be repeated on the other pages.
□
Summary of Contents for CPM 311
Page 1: ......
Page 9: ... 9 INTRODUCTION ...
Page 31: ... 31 PACKING LABELING INFORMATION ...
Page 33: ... 33 OPERATING MANUAL ...
Page 49: ... 49 RELAY MENUS MANUAL ...
Page 51: ... 51 The Menu Tree ...
Page 52: ... 52 ...
Page 53: ... 53 ...
Page 54: ... 54 ...
Page 55: ... 55 ...
Page 56: ... 56 ...
Page 57: ... 57 ...
Page 124: ... 124 DIGICONNECT PC PROGRAM MANUAL ...
Page 181: ... 181 APPLICATION DIAGRAMS ...
Page 183: ... 183 Sample Power Transformer Protection Application Diagram ...
Page 185: ... 185 FUNDAMENTAL CABLING DIAGRAM ...
Page 195: ... 195 APPLICATION DIAGRAM NO 10 Function Function Activation Address RS485 Connection Settings ...
Page 196: ... 196 TECHNICAL DATA ...
Page 208: ... 208 GLOSSARY ...
