7.1.4
Signals
Table 49:
ZMRPSB Input signals
Name
Type
Default
Description
I3P
GROUP
SIGNAL
-
Three phase group signal for current inputs
U3P
GROUP
SIGNAL
-
Three phase group signal for voltage inputs
BLOCK
BOOLEAN
0
Block of function
BLKI01
BOOLEAN
0
Block inhibit of start output for slow swing condition
BLKI02
BOOLEAN
0
Block inhibit of start output for subsequent residual
current detect
I0CHECK
BOOLEAN
0
Residual current (3I0) detection to inhibit start
output
EXTERNAL
BOOLEAN
0
Input for external detection of power swing
Table 50:
ZMRPSB Output signals
Name
Type
Description
START
BOOLEAN
Power swing detected
ZOUT
BOOLEAN
Measured impedance within outer impedance
boundary
ZIN
BOOLEAN
Measured impedance within inner impedance
boundary
7.1.5
Settings
Table 51:
ZMRPSB Group settings (basic)
Name
Values (Range)
Unit
Step
Default
Description
Operation
Off
On
-
-
Off
Operation Mode On / Off
X1InFw
0.10 - 3000.00
ohm
0.01
30.00
Inner reactive boundary, forward
R1LIn
0.10 - 1000.00
ohm
0.01
30.00
Line resistance for inner characteristic
angle
R1FInFw
0.10 - 1000.00
ohm
0.01
30.00
Fault resistance coverage to inner
resistive line, forward
X1InRv
0.10 - 3000.00
ohm
0.01
30.00
Inner reactive boundary, reverse
R1FInRv
0.10 - 1000.00
ohm
0.01
30.00
Fault resistance line to inner resistive
boundary, reverse
OperationLdCh
Off
On
-
-
On
Operation of load discrimination
characteristic
RLdOutFw
0.10 - 3000.00
ohm
0.01
30.00
Outer resistive load boundary, forward
ArgLd
5 - 70
Deg
1
25
Load angle determining load impedance
area
RLdOutRv
0.10 - 3000.00
ohm
0.01
30.00
Outer resistive load boundary, reverse
Table continues on next page
Section 7
1MRK 504 135-UEN A
Impedance protection
124
Technical manual
Summary of Contents for ret650
Page 1: ...Relion 650 series Transformer protection RET650 Technical manual ...
Page 2: ......
Page 40: ...34 ...
Page 62: ...56 ...
Page 84: ...78 ...
Page 208: ...202 ...
Page 376: ...370 ...
Page 414: ...408 ...
Page 530: ...524 ...
Page 562: ...556 ...
Page 620: ...614 ...
Page 668: ...662 ...
Page 669: ...663 ...