AS/NZS 1044:1995
Limits and methods of measurement of radio disturbance characteristics of electrical motor-operated and thermal appliances for household and similar purposes, electric tools and similar electric apparatus
Specifies limits and methods of measurement of electromagnetic radiation and conduction disturbances from household appliances and electric tools whose main functions are performed by electric motors and switching or regulating devices. Identical with and reproduced from IEC/CISPR 14:1993. Reprinted to incorporate Amendments 1 and 2.
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AS/NZS 1044:1995 LIMITS AND METHODS OF MEASUREMENT OF RADIO DISTURBANCE CHARACTERISTICS OF ELECTRICAL MOTOR-OPERATED AND ....
PREFACE
CONTENTS
1 Scope
2 Normative references
3 Definitions
3.2 click:
3.3 switching operation:
3.4 minimum observation time T:
3.5 click rate N:
3.6 click limit L q :
3.7 upper quartile method:
4 Limits of disturbance
4.1 Continuous disturbance
4.2 Discontinuous disturbance
5 Methods of measurement of terminal disturbance voltages (148,5 kHz to 30 MHz)
5.1 Measuring devices
5.2 Measuring procedures and arrangements
5.3 Reduction of disturbance not produced by the equipment under test
6 Methods of measurement of disturbance power (30 MHz to 300 MHz)
6.1 Measuring devices
6.2 Measurement procedure on the mains lead
6.3 Special requirements for appliances having auxiliary apparatus connected at the end of a lead other than the mains lead
6.4 Assessment of measuring results
7 Operating conditions and interpretation of results
7.1 General
7.2 Operating conditions for particular equipment and integrated parts
7.3 Standard operating conditions and normal loads
7.4 Interpretation of results
8 Interpretation of CISPR radio disturbance limit
8.1 Significance of a CISPR limit
8.2 Type tests
8.3 Compliance with limits for appliances in large-scale production
Annex A - Limits of disturbance caused by the switching operations of specific appliances when the formula 20 Ig 30/ Nis applica
Annex B - Example of the use of the upper quartile method to determine compliance with disturbance limits (see 7.4.2.6)
Annex C - Guidance notes for the measurement of discontinuous disturbance
C.1 General
C.2 Measurement of the basic parameters
C.3 Measurement of discontinuous disturbance
Previous versions
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AS/NZS 1044:1995 LIMITS AND METHODS OF MEASUREMENT OF RADIO DISTURBANCE CHARACTERISTICS OF ELECTRICAL MOTOR-OPERATED AND ....
PREFACE
CONTENTS
1 Scope
2 Normative references
3 Definitions
3.2 click:
3.3 switching operation:
3.4 minimum observation time T:
3.5 click rate N:
3.6 click limit L q :
3.7 upper quartile method:
4 Limits of disturbance
4.1 Continuous disturbance
4.2 Discontinuous disturbance
5 Methods of measurement of terminal disturbance voltages (148,5 kHz to 30 MHz)
5.1 Measuring devices
5.2 Measuring procedures and arrangements
5.3 Reduction of disturbance not produced by the equipment under test
6 Methods of measurement of disturbance power (30 MHz to 300 MHz)
6.1 Measuring devices
6.2 Measurement procedure on the mains lead
6.3 Special requirements for appliances having auxiliary apparatus connected at the end of a lead other than the mains lead
6.4 Assessment of measuring results
7 Operating conditions and interpretation of results
7.1 General
7.2 Operating conditions for particular equipment and integrated parts
7.3 Standard operating conditions and normal loads
7.4 Interpretation of results
8 Interpretation of CISPR radio disturbance limit
8.1 Significance of a CISPR limit
8.2 Type tests
8.3 Compliance with limits for appliances in large-scale production
Annex A - Limits of disturbance caused by the switching operations of specific appliances when the formula 20 Ig 30/ Nis applica
Annex B - Example of the use of the upper quartile method to determine compliance with disturbance limits (see 7.4.2.6)
Annex C - Guidance notes for the measurement of discontinuous disturbance
C.1 General
C.2 Measurement of the basic parameters
C.3 Measurement of discontinuous disturbance
Previous versions
AS/NZS 1044:1995
Online Library subscription pricing
The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz.