Scheme communication
M16038-1 v15
Table 93. Scheme communication logic for distance or overcurrent protection ZCPSCH
Function
Range or value
Accuracy
Scheme type
Off
Intertrip
Permissive UR
Permissive OR
Blocking
DeltaBlocking
-
Operate voltage, Delta U
(0–100)% of UBase
±5.0% of ΔU
Operate current, Delta I
(0–200)% of IBase
±5.0% of ΔI
Operate zero sequence voltage,
Delta 3U0
(0–100)% of UBase
±10.0% of Δ3U0
Operate zero sequence current,
Delta 3I0
(0–200)% of IBase
±10.0% of Δ3I0
Co-ordination time for blocking
communication scheme
(0.000-60.000) s
±0.2% or ±15 ms whichever is greater
Minimum duration of a carrier send
signal
(0.000-60.000) s
±0.2% or ±45 ms whichever is greater
Security timer for loss of guard
signal detection
(0.000-60.000) s
±0.2% or ±15 ms whichever is greater
Operation mode of unblocking logic
Off
NoRestart
Restart
-
SEMOD166936-2 v8
Table 94. Phase segregated scheme communication logic for distance protection ZPCPSCH
Function
Range or value
Accuracy
Scheme type
Intertrip
Permissive UR
Permissive OR
Blocking
-
Co-ordination time for blocking
communication scheme
(0.000-60.000) s
±0.2% or ±15 ms whichever is greater
Minimum duration of a carrier send
signal
(0.000-60.000) s
±0.2% or ±15 ms whichever is greater
M16039-1 v16
Table 95. Current reversal and weak-end infeed logic for distance protection ZCRWPSCH
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
Line differential protection RED670
1MRK 505 379-BEN R
Version 2.2
128
Hitachi Energy
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Содержание Relion 670 Series
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