Table 67. Operation characteristics
Parameter Values (Range)
Operating curve type 1=ANSI Ext. inv.
2=ANSI Very. inv.
3=ANSI Norm. inv.
4=ANSI Mod inv.
5=ANSI Def. Time
6=L.T.E. inv.
7=L.T.V. inv.
8=L.T. inv.
9=IEC Norm. inv.
10=IEC Very inv.
11=IEC inv.
12=IEC Ext. inv.
13=IEC S.T. inv.
14=IEC L.T. inv
15=IEC Def. Time
17=Programmable
18=RI type
19=RD type
Operating curve type (voltage protection)
5=ANSI Def. Time
15=IEC Def. Time
17=Inv. Curve A
18=Inv. Curve B
19=Inv. Curve C
20=Programmable
21=Inv. Curve A
22=Inv. Curve B
23=Programmable
Control functions
Table 68. Synchrocheck (SYNCRSYN)
Characteristic Value
Operation accuracy At the frequency f = f
n
Voltage: ±1.0% or ±0.002 x U
n
Frequency: ±10 mHz
Phase angle ±2°
Reset time < 50 ms
Reset ratio Typical 0.96
Operate time accuracy ±1.0% of the set value or ±20 ms
Transformer Protection and Control 1MRS756788 A
RET630
Product version: 1.0 Issued: 15.09.2009
46 ABB
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