ABB Relion 650 series RET650 Product Manual page 61

ABB
Transformer protection RET650
Product version: 1.1
Control
Table 41. Voltage control TR8ATCC, TCMYLTC
Function
Transformer reactance on ATCC side (0.1–200.0)Ω, primary
Time delay for lower command
when fast step down mode is
activated
Voltage control set voltage
Outer voltage deadband
Inner voltage deadband
Upper limit of busbar voltage
Lower limit of busbar voltage
Undervoltage block level
Time delay (long) for automatic
control commands
Time delay (short) for automatic
control commands
Minimum operating time in inverse
mode
Line resistance
Line reactance
Load voltage adjustment constants
Load voltage auto correction
Overcurrent block level
Level for number of counted raise/
lower within one hour
Level for number of counted raise/
lower within 24 hours
Time window for hunting alarm
Hunting detection alarm, max
operations/window
Alarm level of active power in
forward and reverse direction
Range or value
(1.0–100.0) s
(85.0–120.0)% of UB2
(0.2–9.0)% of UB2
(0.1–9.0)% of UB2
(80–180)% of UB2
(70–120)% of UB2
(0–120)% of UB2
(3–1000) s
(1–1000) s
(3–120) s
(0.00–150.00)Ω, primary
(-150.00–150.00)Ω, primary
(-20.0–20.0)% of UB2
(-20.0–20.0)% of UB2
(0–250)% of IBase
(0–30) operations/hour
(0–100) operations/day
(1–120) minutes
(3–30) operations/window
(-9999.99–9999.99) MW
1MRK 504 127-BEN -
Issued: February 2011
Accuracy
-
-
±0.5% of U
r
± 5,0% of set value
± 5,0% of set value
± 0.5% of U
r
± 0.5% of U
r
± 0.5% of U
r
± 0.5% ± 110 ms
± 0.5% ± 110 ms
± 0.5% ± 110 ms
-
-
± 5,0% of set value
± 5,0% of set value
± 1.0% of I at I≤I
r r
± 1.0% of I at I>I
r
-
-
-
-
± 1.0% of S
r
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