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APPL setting
Quantity
V0
P
Q
Wh
varh
PF
f
THM
The GRD150 can monitor the upper or lower limit value of power system quantities and issue an
alarm or record an event if the measured value is exceed the upper or lower limit value set. Two
stage limits for the upper and lower limit value can be set respectively:
- Upper: High warning limit, High alarm limit
- Lower: Low warning limit, Low alarm limit
The hysteresis setting for the upper or lower limit value can be set as shown in Figure 2.6.6.
High alarm limit
High warning limit
Low warning limit
Low alarm limit
High warning
High alarm
Low warning
Low alarm
Figure 2.6.6
The setting ranges for metering and monitoring the upper or lower limit value are as follows:
Element
Range
Display value
Primary/Secondary
Wh
0 - 999999
+
Wh
0 - 999999
-
varh
0 - 999999
+
varh
0 - 999999
-
[IHALMEN]
Off / On
[IHWAMEN]
Off / On
[ILALMEN]
Off / On
[ILWAMEN]
Off / On
[VHALMEN]
Off / On
APPL-CT
3P
2P
1P
3PN
Power system quantity
Monitoring of Upper and Lower Limit
Step
Default
Primary
1
0
1
0
1
0
1
0
Off
Off
Off
Off
Off
⎯
⎯
115
6 F 2 S 0 8 4 2
APPL-VT
3PV
3PP
2PP
Hysteresis setting
Remarks
Metering
Current I high alarm enable
Current I high warning enable
Current I low alarm enable
Current I low warning enable
Voltage V high alarm enable
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