ABB Relion 615 series, Product Manual

Page: 35 / 56

Control functions
Table 52. Tap changer position indication (TPOSYLTC)
Descrpition Value
Response time for binary inputs Typically 100 ms
Table 53. Tap changer control with voltage regulator (OLATCC)
Characteristic Value
Operation accuracy
1)
Depending on the frequency of the measured current: f
n
±2 Hz
Differential voltage U
d
= ±0.5% of the measured value or ±0.005 × U
n
(in
measured voltages <2.0 × U
n
)
Operation value = ±1.5% of the U
d
for Us = 1.0 × U
n
Operate time accuracy in definite time mode 2)
+4.0%/-0% of the set value
Operate time accuracy in inverse time mode
2)
+8.5%/-0% of the set value
(at theoretical B in range of 1.1…5.0)
Also note fixed minimum operate time (IDMT) 1 s.
Reset ratio for control operation
Reset ratio for analogue based blockings (except run back raise voltage
blocking) Typically 0.80 (1.20)
Typically 0.96 (1.04)
1) Default setting values used
2) Voltage before deviation = set
Band center voltage
Voltage Protection and Control 1MRS757058 K
REU615
Product version: 5.0 FP1
ABB 35