VA
VB
VC
PU27PN
IN
VN
VAVB
VBVC
VCVA
OperMode
RELAG
RELBG
RELCG
Phase Preference
Evaluation
PICKUP
Pickup_N
3VOPU
PU27PP
Voltage and
Current
Discrimination
Detect Cross-
Country fault
PHSEL
ANSI10000189-1-en.vsd
BLOCK
ZREL
AND
AND
ANSI10000189 V1 EN
Figure 81:
Simplified block diagram for Phase preference logic
6.6.7
Technical data
Table 59:
PPLPHIZ technical data
Function
Range or value
Accuracy
Operate value, phase-to-phase
and phase-to-neutral
undervoltage
(10.0 - 100.0)% of VBase
± 0,5% of V
n
Reset ratio, undervoltage
< 105%
-
Operate value, residual voltage
(5.0 - 300.0)% of VBase
± 0,5% of V
n
Reset ratio, residual voltage
> 95%
-
Operate value, residual current
(10 - 200)% of IBase
± 1,0% of I
n
for I < I
n
± 1,0% of I for I > I
n
Reset ratio, residual current
> 95%
-
Timers
(0.000 - 60.000) s
± 0,5% ± 10 ms
Operating mode
No Filter, NoPref
Cyclic: 1231c, 1321c
Acyclic: 123a, 132a, 213a, 231a,
312a, 321a
Section 6
1MRK 506 335-UUS A
Impedance protection
174
Technical manual
Содержание REL650 series
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