ABB Relion 670 series - Technical Data

Zone timer logic for the distance protection is symbolically presented in figure 110.
1 timers seperated
2 timers linked
3 internal start
4 start from phSel
5 external start
internalCommonStart
phSelStart
externalCommonStart
t
tON
t
tON
BLOCK
TRPE
TRPP
³1
³1
&
Internal
start
a
b
a=b
a
b
a<b
STTIMER
&
&
&
STPP
STPE
&
&
Internal
start
IEC12000463-3-en.vsd
FALSE
³1
ZnTimerSel
IEC12000463 V2 EN-US
Figure 110: Zone timer logic
7.3.7 Technical data
SEMOD173244-1 v1
SEMOD173242-2 v13
Table 104: ZMHPDIS (21) technical data
Function Range or value Accuracy
Number of zones, phase-to-
ground
Max 4 with selectable
direction
-
Minimum trip current (10–30)% of IBase -
Positive sequence impedance,
phase-to-ground loop
(0.005–3000.000) W/phase
±2.0% static accuracy
Conditions:
Voltage range: (0.1-1.1) x V
n
Current range: (0.5-30) x I
n
Angle: 85 degrees
Positive sequence impedance
angle, phase-to-ground loop
(10–90) degrees
Reverse reach, phase-to-
ground loop (Magnitude)
(0.005–3000.000) Ω/phase
Magnitude of ground return
compensation factor KN
(0.00–3.00)
Angle for ground
compensation factor KN
(-180–180) degrees
Dynamic overreach <5% at 85 degrees
measured with CVT’s and
0.5<SIR<30
-
Definite time delay phase-
phase and phase-ground
operation
(0.000-60.000) s ±0.2% or ±60 ms whichever is greater
Table continues on next page
Section 7 1MRK 502 066-UUS B
Impedance protection
234
Technical manual