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1MAC050144-MB C
Section 4
Protection functions
615 series ANSI
315
Technical Manual
to follow the characteristics of the object to be protected more closely and the thermal
capacity of the object is very well known, a value between "50" and "100 percent" is
required.
For motor applications where, for example, two hot starts are allowed instead of three cold
starts, the value of the setting "
Weighting factor p
= 40 percent" has proved to be useful.
Setting the value of
Weighting factor p
significantly below "50 percent" should be handled
carefully as there is a possibility to overload the protected object as a thermal unit might
allow too many hot starts or the thermal history of the motor has not sufficiently been taken
into account.
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 ...
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