Output - ABB REL650 Technical Manual

Section 6
Impedance protection
6.5.6.4
156

Output

All loop releasing signals are gathered in the binary coded integer output ZREL.
The value of ZREL can be calculated according to Equation 15.
 
ZREL L 1 N 1 * L 2 N
IECEQUATION16018 V1 EN-US
For example, if only L1N is active, then the value is 1. If both start L1N and L3N
are active, then the value is 1+4=5.
The phase-to-phase loops are always released, that is, the value of
ZREL will always be at least 8+16+32=56. For example:
If only L1N is active, then the value is 1+56=57
If start L1N and L3N are active, then the value is 1+4+56=61
The BLOCK input will only block the enabling signals for phase-
to-earth loops, phase-to-phase loops are still released. The
PPL2PHIZ is designed not to have any influence on the phase-to-
phase loops of the distance protection.
startU
zrelL1
zrelL2
zrelL3
BLOCK
IEC16000025 V1 EN-US
Figure 78: Output
 
* 2 L 3 N * 4 L 1 L 2 8 *
AND
AND
AND
AND
1MRK 506 382-UEN A
GUID-FCDCF1A9-A34D-4FD7-B488-3F31A93BE231 v1
 
L 2 L * 3 16 L 3 L * 1 32
L1N
L2N
L3N
Bool to
TRUE
L1L2
Integer
TRUE
L2L3
TRUE
L3L1
IEC16000025-1-en.vsdx
Line distance protection REL650 2.2 IEC
Technical manual
(Equation 15)
ZREL