ABB RELION REX640 Technical Manual page 971
Protection and control
Hide thumbs
Also See for RELION REX640:
- Technical manual (1760 pages) ,
- Operation manual (164 pages) ,
- Engineering manual (156 pages)
Table of Contents
Advertisement
1MRS759142 F
-X1 reverse zone x
Figure 544: Settings which define the line reach for phase-to-earth impedance
measuring elements if Impedance mode Zn = "Rectangular", non-directional
directionality
Impedance mode Zn = Polar
In case of phase-to-phase or three-phase impedance measuring elements, the line
reach is defined with:
Z1 zone x (x = 1...5)
•
Z1 angle zone x (x = 1...5)
•
In case of non-directional characteristics, the reactive reach magnitude in reverse
direction is defined with the
line angle,
Figure 545: Settings which define the line reach for phase-to-phase or three-phase
impedance measuring elements if Impedance mode Zn = "Polar"
In case of phase-to-earth impedance measuring elements, the line reach is defined
with:
Z1 zone x (x = 1...5)
•
REX640
Technical Manual
⋅
(2
X1 zone x + X0 zone x)/3
* (2
X1 zone x + X0 zone x)/3
⋅
X1 zone x
-X1 reverse zone x
Z1 angle zone x, is the same for forward and reverse direction.
Forward
X
Z1 angle zone x
R
Non -directional
X
α
* (2
⋅
R1 zone x + R0 zone x)/3
X1 zone x
Z1 reverse zone x (x = 1...5) setting. The characteristic
Reverse
X
R
Protection functions
α
R
⋅
(2
R1 zone x + R0 zone x)/3
Non-directional
X
R
971
Advertisement
Table of Contents
