9.7.2 Functionality
SEMOD171457-5 v7
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
SEMOD171785-4 v4
ANSI07000039-2-en.vsd
LOVPTUV (27)
V3P*
BLOCK
CBOPEN
VTSU
TRIP
PICKUP
ANSI07000039 V2 EN-US
Figure 359: LOVPTUV (27) function block
9.7.4 Signals
PID-3519-INPUTSIGNALS v5
Table 374: LOVPTUV (27) Input signals
Name Type Default Description
V3P GROUP
SIGNAL
- Voltage connection
BLOCK BOOLEAN 0 Block the all outputs
CBOPEN BOOLEAN 0 Circuit breaker open
VTSU BOOLEAN 0 Block from voltage circuit supervision
PID-3519-OUTPUTSIGNALS v5
Table 375: LOVPTUV (27) Output signals
Name Type Description
TRIP BOOLEAN Trip signal
PICKUP BOOLEAN Pickup signal
9.7.5 Settings
PID-3519-SETTINGS v5
Table 376: LOVPTUV (27) Group settings (basic)
Name
Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Operation Disabled/Enabled
VPG 1 - 100 %VB 1 70 Operate voltage in % of base voltage
VBase
tTrip 0.000 - 60.000 s 0.001 7.000 Operate time delay
1MRK 502 066-UUS B Section 9
Voltage protection
661
Technical manual
To Next Page
Loading...
