EN 61986:2002
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Rotating electrical machines - Equivalent loading and super-position techniques - Indirect testing to determine temperature rise
07-01-2008
02-28-2002
1 Scope
2 Normative references
3 Symbols and units
4 General test requirements
5 Principle of superposition tests
5.1 General
5.2 Permissible temperature rise at superposition
tests
6 Superposition methods for induction motors
6.1 Method of reduced voltage and rated current
6.2 Method of rated voltage and reduced current
6.3 Method for wound-rotor induction motors
7 Superposition methods for synchronous machines
7.1 Method of open circuit, short circuit, zero
excitation
7.2 Method of zero power factor and open circuit
loading
8 Superposition method for d.c. machines
9 Principle of equivalent load tests
9.1 General
9.2 Permissible temperature rise at equivalent
load tests
10 Equivalent load tests for induction motors
10.1 Forward short-circuit test
10.2 Modulated frequency method
10.3 DC injection
10.4 Mixed-frequency or bi-frequency method
11 Equivalent load test for synchronous machines -
Zero power factor
Annex ZA (normative) Normative references to
international publications with their
corresponding European publications
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