12.2.7 Technical data
M16039-1 v16
Table 259: ZCRWPSCH technical data
Function
Range or value Accuracy
Detection level phase-to-neutral
voltage
(10-90)% of UBase ±0.5% of U
r
Detection level phase-to-phase
voltage
(10-90)% of UBase ±0.5% of U
r
Operate time for current reversal
logic
(0.000-60.000) s ±0.2% or ±15 ms
whichever is greater
Delay time for current reversal (0.000-60.000) s ±0.2% or ±15 ms
whichever is greater
Coordination time for weak-end
infeed logic
(0.000-60.000) s ±0.2% or ±15 ms
whichever is greater
12.3 Local acceleration logic ZCLCPSCH
SEMOD52894-1 v4
12.3.1 Identification
M14860-1 v4
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Local acceleration logic ZCLCPSCH - -
12.3.2 Functionality
M13823-3 v7
To achieve fast clearing of faults on the whole line, when no communication
channel is available, local acceleration logic (ZCLCPSCH) can be used. This logic
enables fast fault clearing and re-closing during certain conditions, but naturally, it
can not fully replace a communication channel.
The logic can be controlled either by the autorecloser (zone extension) or by the
loss-of-load current (loss-of-load acceleration).
12.3.3 Function block
M13816-3 v4
ZCLCPSCH
I3P*
BLOCK
ARREADY
NDST
EXACC
BC
LLACC
TRZE
TRLL
IEC13000307-1-en.vsd
IEC13000307 V1 EN-US
Figure 228: ZCLCPSCH function block
Section 12 1MRK 506 382-UEN A
Scheme communication
446 Line distance protection REL650 2.2 IEC
Technical manual
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