ABB Relion 630 Series RET630 Product Manual page 56

Transformer Protection and Control
RET630
Product version: 1.1
Table 79. Voltage regulator (OLATCC) main settings, continued
Parameter
Load phase angle
Control delay time 1
Control delay time 2
Supervision and monitoring functions
Table 80. Circuit-breaker condition monitoring (SSCBR)
Characteristic
Current measuring accuracy
Operate time accuracy
Traveling time measurement
Table 81. Fuse failure supervision (SEQRFUF)
Characteristic
Operation accuracy
1)
Operate time
• NPS function
• Delta function
1) Includes the delay of the signal output contact, f
random phase angle
56
Function
OLATCC
OLATCC
OLATCC
= 50 Hz, fault voltage with nominal frequency injected from
n
Values (Range)
-89 - 89
1.0 - 300.0
1.0 - 300.0
Value
At the frequency f = f
n
±1.5% or ±0.002 × I (at currents in the
n
range of 0.1...10 × I )
n
±5.0% (at currents in the range of 10...40 ×
I )
n
±1.0% of the set value or ±20 ms
±10 ms
Value
At the frequency f = f
n
Current: ±1.5% of the set value or ±0.002 × I
Voltage: ±1.5% of the set value or ±0.002 × U
U = 1.1 x set Neg
Fault
Seq voltage Lev
U = 5.0 x set Neg
Fault
Seq voltage Lev
ΔU = 1.1 x set
Voltage change rate
ΔU = 2.0 x set
Voltage change rate
1MRS756978 D
Issued: 2011-05-18
Step
1
0.1
0.1
n
n
Typical 35 ms (±15
ms)
Typical 25 ms (±15
ms)
Typical 35 ms (±15
ms)
Typical 28 ms (±15
ms)
ABB