![background image](http://html.mh-extra.com/html/abb/615-series-ansi/615-series-ansi_technical-manual_4665182.webp)
1MAC050144-MB C
Section 4
Protection functions
615 series ANSI
175
Technical Manual
4.1.6.7
Timer characteristics
67/51N and 67/50N supports both DT and IDMT characteristics. The user can select the
timer characteristics with the
Operating curve type
setting.
The IED provides 16 IDMT characteristics curves, of which seven comply with the IEEE
C37.112 and six with the IEC 60255-3 standard. Two curves follow the special
characteristics of ABB praxis and are referred to as RI and RD. In addition to this, a user
programmable curve can be used if none of the standard curves are applicable. The user
can choose the DT characteristic by selecting the
Operating curve type
values "ANSI Def.
Time" or "IEC Def. Time". The functionality is identical in both cases.
The following characteristics, which comply with the list in the IEC 61850-7-4
specification, indicate the characteristics supported by different stages:
Table 162: Timer characteristics supported by different stages
Operating curve type
Supported by
67/51N and 67/50N-1
67/50N-2
(1) ANSI Extremely Inverse
x
x
(2) ANSI Very Inverse
x
(3) ANSI Normal Inverse
x
x
(4) ANSI Moderately Inverse
x
(5) ANSI Definite Time
x
x
(6) Long Time Extremely
Inverse
x
(7) Long Time Very Inverse
x
(8) Long Time Inverse
x
(9) IEC Normal Inverse
x
(10) IEC Very Inverse
x
(11) IEC Inverse
x
(12) IEC Extremely Inverse
x
(13) IEC Short Time Inverse
x
(14) IEC Long Time Inverse
x
(15) IEC Definite Time
x
x
(17) User programmable curve
x
x
(18) RI type
x
(19) RD type
x
For a detailed description of the timers, see the General function block
features section in this manual.
Summary of Contents for 615 Series ANSI
Page 1: ...Relion Protection and Control 615 series ANSI Technical Manual ...
Page 2: ......
Page 29: ...1MAC050144 MB C Section 615 series ANSI 22 Technical Manual ...
Page 389: ...Section 4 1MAC050144 MB C Protection functions 382 615 series ANSI Technical Manual ...
Page 485: ...Section 6 1MAC050144 MB C Supervision functions 478 615 series ANSI Technical Manual ...
Page 635: ...Section 10 1MAC050144 MB C Other functions 628 615 series ANSI Technical Manual ...
Page 711: ...Section 16 1MAC050144 MB C Glossary 704 615 series ANSI Technical Manual ...
Page 712: ......