Schweitzer Engineering Laboratories SEL-700G Series, Инструкция по эксплуатации

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4.139
Date Code 20170814 Instruction Manual SEL-700G Relay
Protection and Logic Functions
Group Settings (SET Command)
Set EPWR to N (None) or as many as four power elements, as necessary for
your application. Set the element pickup, 3PH PWR ELEM PU to the values
you want. Figure 4.96 shows the power element logic diagram, and
Figure 4.97 shows the operation in the real/reactive power plane.
Figure 4.96 Three-Phase Power Elements Logic
PWR ELEM DELAY 0.00–240.00 s PWRm3D := 0.00
3PH PWR ELEM PU OFF, 1.0–6500.0 VA
(secondary VA)
b
3PWRm4P := OFF
PWR ELEM TYPE +WATTS, –WATTS,
+VARS, –VARS PWRm4T := +VARS
PWR ELEM DELAY 0.00–240.00 s PWRm4D := 0.00
a
m = X or Y.
b
The ranges and default settings shown are for 5 A input. Divide by 5 for 1 A input.
Table 4.38 Power Element Settings (Sheet 2 of 2)
Setting Prompt Setting Range
Setting Name :=
Factory Default
a
PWRXnD
0
3PWRXnP
|VABX|
20 V
3PWRXnT
Relay
Word
Bits
Switch A
Position
+WATTS
–WATTS
+VARS
–VARS
Setting
PWRXnT
1
1
2
2
Switch B
Position
1
2
1
2
2 Cycle
Average
•(–1)
Switch A Switch B
1 1
2 2
3PWRXnP
|VBCX|
Setting
P
Q
Where n = 1, 2, 3, or 4.
Only X side logic shown, Y side is similar.