Function Block - ABB REL650 series Technical Manual

Section 8
Voltage protection
8.2.3
8.2.4
300
Two step overvoltage protection (OV2PTOV, 59) function can be used to detect open line
ends, normally then combined with a directional reactive over-power function to
supervise the system voltage. When triggered, the function will cause an alarm, switch in
reactors, or switch out capacitor banks.
OV2PTOV (59) has two voltage steps, where step 1 can be set as inverse or definite time
delayed. Step 2 is always definite time delayed.
OV2PTOV (59) has a high reset ratio to allow settings close to system service voltage.

Function block

OV2PTOV (59)
V3P* TRIP
BLOCK TRST1
BLK1 TRST2
BLK2 PICKUP
PU_ST1
PU_ST1_A
PU_ST1_B
PU_ST1_C
PU_ST2
ANSI09000278-1-en.vsd
ANSI09000278 V1 EN
Figure 139: OV2PTOV function block (59)
Signals
Table 189: OV2PTOV (59) Input signals
Name Type
V3P GROUP
SIGNAL
BLOCK BOOLEAN
BLK1 BOOLEAN
BLK2 BOOLEAN
Table 190: OV2PTOV (59) Output signals
Name Type
TRIP BOOLEAN
TRST1 BOOLEAN
TRST2 BOOLEAN
PICKUP BOOLEAN
PU_ST1 BOOLEAN
Table continues on next page
Default Description
- Three phase group signal for voltage inputs
0 Block of function
0 Block of step 1
0 Block of step 2
Description
Common trip signal
Trip signal from step 1
Trip signal from step 2
General pickup signal
Start signal from step 1
1MRK 506 335-UUS A
Technical manual