ABB REU 610 Technical Reference Manual page 37

1MRS755769
Table 5.1.4.7.-1 Setting values (Continued)
Setting Description
t < Resetting time of stage U<
r
D/P< Drop-off/pick-up ratio of stage U<
U<< Start value of stage U<<
U < Start value of stage U
1
t<< Operate time of stage U<<
IDMT U<</U IDMT operation mode setting for U<</U
1s
k<< IDMT time multiplier, k<<
U > Start value of stage U
0
t > Operate time of stage U
0
t > Resetting time of stage U
0r
U >> Start value of stage U
0
t >> Operate time of stage U
0
CBFP Operate time of CBFP
Voltage Relay
Technical Reference Manual
<
1
>
0
>
0
>
0
>>
0
>>
0
Switchgroups and parameter masks
The settings can be altered and the functions of the relay selected in the SG_ selector
switchgroups. The switchgroups are software based and thus not physical switches
to be found in the hardware of the relay. A checksum is used for verifying that the
switches have been properly set. The Fig. 5.1.4.7.-1 shows an example of manual
checksum calculation.
Setting range
0.07...60.0 s
1.01...1.05
0.20...1.20 × U
n
0.20...1.20 × U
n
0.10...600 s
0 = definite time
1s
1 = curve C
0.10...2.00
2.0...80.0% U
n
0.10...600 s
0.07...60.0 s
2.0...80.0% U
n
0.10...600 s
0.10...60.0 s
REU 610
Default setting
0.07
1.03
0.2
0.3
0.1
0
0.1
2.0
0.1
0.07
2.0
0.1
0.10
37