Schweitzer Engineering Laboratories SEL-311C - Figure 3.27 Single-Phase and Three-Phase Voltage Elements

3.41
Date Code 20060320 Instruction Manual SEL-311C Relay
Distance, Out-of-Step, Overcurrent, Voltage, Synchronism Check, and Frequency Elements
Voltage Elements
Accuracy
Figure 3.27 Single-Phase and Three-Phase Voltage Elements
27AB V
AB
27PP Figure 3.28
27BC V
BC
OFF, 0.00–260.00 V secondary
27CA V
CA
59AB V
AB
59PP
59BC V
BC
OFF, 0.00–260.00 V secondary
59CA V
CA
59N1 3V
0
(V
A
+ V
B
+ V
C
)
59N1P
OFF, 0.00–150.00 V secondary
59N2 3V
0
(V
A
+ V
B
+ V
C
)
59N2P
OFF, 0.00–150.00 V secondary
59Q V
2
1/3 (V
A
+ a
2
V
B
+ aV
C
)
59QP
OFF, 0.00–100.00 V secondary
59V1 V
1
1/3 (V
A
+ aV
B
+ a
2
V
C
)
59V1P
OFF, 0.00–150.00 V secondary
27S V
S
27SP
OFF, 0.00–150.00 V secondary
Figure 3.29
59S V
S
59SP
OFF, 0.00–150.00 V secondary
Table 3.14 Voltage Elements Settings and Settings Ranges (Sheet 2 of 2)
Voltage
Element
(Relay
Word Bits)
Operating
Voltage
Pickup Setting/Range
See
Figure
Pickup
±1 V and ±5% of setting
Transient Overreach
<5% of setting
27A
27B
27C
3P27
59A
59B
59C
3P59
27P
59P
|V
A
|
|V
B
|
|V
C
|
Settings/
Voltages
Relay
Word
Bits