ABB RELION 670 Series Technical Manual page 667

1MRK 502 066-UUS B
9.7.2 Functionality
Loss of voltage check LOVPTUV (27) is suitable for use in networks with an automatic system
restoration function. LOVPTUV (27) issues a three-pole trip command to the circuit breaker, if all
three phase voltages fall below the set value for a time longer than the set time and the circuit
breaker remains closed.
The operation of LOVPTUV (27) is supervised by the fuse failure supervision FUFSPVC.
9.7.3 Function block
V3P*
BLOCK
CBOPEN
VTSU
ANSI07000039 V2 EN-US
Figure 359: LOVPTUV (27) function block
9.7.4 Signals
Table 374: LOVPTUV (27) Input signals
Name
V3P
BLOCK
CBOPEN
VTSU
Table 375: LOVPTUV (27) Output signals
Name
TRIP
PICKUP
9.7.5 Settings
Table 376: LOVPTUV (27) Group settings (basic)
Name Values (Range)
Operation Disabled
Enabled
VPG 1 - 100
tTrip 0.000 - 60.000
Technical manual
LOVPTUV (27)
TRIP
PICKUP
ANSI07000039-2-en.vsd
Type
GROUP
SIGNAL
BOOLEAN
BOOLEAN
BOOLEAN
Type
BOOLEAN
BOOLEAN
Unit
-
%VB
s
Default Description
- Voltage connection
0 Block the all outputs
0 Circuit breaker open
0 Block from voltage circuit supervision
Description
Trip signal
Pickup signal
Step Default
- Disabled
1 70
0.001 7.000
Voltage protection
Description
Operation Disabled/Enabled
Operate voltage in % of base voltage
VBase
Operate time delay
Section 9
SEMOD171457-5 v7
SEMOD171785-4 v4
PID-3519-INPUTSIGNALS v5
PID-3519-OUTPUTSIGNALS v5
PID-3519-SETTINGS v5
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