SEMOD175215-2 v12
Table 81. Voltage control TCMYLTC and TLCYLTC
Function
Range or value
Accuracy
Transformer reactance
(0.1–200.0)Ω, primary
-
Time delay for lower command when fast step down mode is activated
(1.0–100.0) s
-
Voltage control set voltage
(85.0–120.0)% of UBase
±0.25 % of U
r
Outer voltage deadband
(0.2–9.0)% of UBase
-
Inner voltage deadband
(0.1–9.0)% of UBase
-
Upper limit of busbar voltage
(80–180)% of UBase
±0.5% of U
r
Lower limit of busbar voltage
(70–120)% of UBase
±0.5% of U
r
Undervoltage block level
(50–120)% of UBase
±0.5% of U
r
Time delay (long) for automatic control commands
(3–1000) s
±0.2% or ±600 ms
whichever is greater
Time delay (short) for automatic control commands
(1–1000) s
±0.2% or ±600 ms
whichever is greater
Minimum operating time in inverse mode
(3–120) s
±0.2% or ±600 ms
whichever is greater
Line resistance
(0.00–150.00)Ω, primary
-
Line reactance
(-150.00–150.00)Ω, primary
-
Load voltage adjustment constants
(-20.0–20.0)% of UBase
-
Load voltage auto correction
(-20.0–20.0)% of UBase
-
Duration time for the reverse action block signal
(30–6000) s
±0.2% or ±600 ms
whichever is greater
Current limit for reverse action block
(0–100)% of I1Base
-
Overcurrent block level
(5–250)% of I1Base
±1.0% of I
r
at I≤I
r
±1.0% of I at I>I
r
Level for number of counted raise/lower within one hour
(0–30) operations/hour
-
Level for number of counted raise/lower within 24 hours
(0–100) operations/day
-
Time window for hunting alarm
(1–120) minutes
-
Hunting detection alarm, max operations/window
(3–30) operations/window
-
Alarm level of active power in forward and reverse direction at
(10-200)% of S
r
and (85-120)% of UBase
(-9999.99–9999.99) MW
±1.0% of S
r
Alarm level of reactive power in forward and reverse direction at
(10-200)% of S
r
and (85-120)% of UBase
(-9999.99–9999.99) MVAr
±1.0% of S
r
Time delay for alarms from power supervision
(1–6000) s
±0.2% or ±600 ms
whichever is greater
Tap position for lowest and highest voltage
(1–63)
-
mA for lowest and highest voltage tap position
(0.000–25.000) mA
-
Type of code conversion
BIN, BCD, GRAY, SINGLE, mA
-
1MRK 502 068-BEN D
Generator protection REG670 2.1 IEC
Product version: 2.1
ABB
85
