ABB REG650 User Manual

The impedance measurement is used for LEXPDIS function. Its operating
characteristic is designed as two zone, offset mho circles and a directional element
restrain line.
7.3.3 Function block
IEC07000031_2_en.vsd
LEXPDIS
I3P*
U3P*
BLOCK
BLKTRZ1
BLKTRZ2
TRIP
TRZ1
TRZ2
START
STZ1
STZ2
XOHM
XPERCENT
ROHM
RPERCENT
IEC07000031 V2 EN
Figure 70: LEXPDIS function block
7.3.4 Signals
Table 62: LEXPDIS Input signals
Name
Type Default Description
I3P GROUP
SIGNAL
- Current group connection
U3P GROUP
SIGNAL
- Voltage group connection
BLOCK BOOLEAN 0 Block of function
BLKTRZ1 BOOLEAN 0 Block trip of zone Z1
BLKTRZ2 BOOLEAN 0 Block trip of zone Z2
Table 63: LEXPDIS Output signals
Name
Type Description
TRIP BOOLEAN Common trip signal
TRZ1 BOOLEAN Trip signal from impedance zone Z1
TRZ2 BOOLEAN Trip signal from impedance zone Z2
START BOOLEAN Common start signal
STZ1 BOOLEAN Start signal from impedance zone Z1
STZ2 BOOLEAN Start signal from impedance zone Z2
XOHM REAL Reactance in Primary Ohms
XPERCENT REAL Reactance in percent of Zbase
ROHM REAL Resistance in Primary Ohms
RPERCENT REAL Resistance in percent of Zbase
Section 7 1MRK 502 048-UEN A
Impedance protection
154
Technical manual

ABB REG650 Specifications

General

Brand	ABB
Model	REG650
Category	Protection Device
Language	English