AS 1955.3-1983

1 - AS 1955 Part 3-1983 SEMICONDUCTOR CONVERTORS - SEMICONDUCTOR DIRECT D.C. CONVERTORS (D.C. CHOPPER CONVERTORS)
4 - PREFACE
4 - CONTENTS
5 - 1 SCOPE.
5 - 2 APPLICATION.
5 - 3 REFERENCED DOCUMENTS.
5 - 4 DEFINITIONS.
5 - 4.1 General.
5 - 4.2 Basic Definitions.
5 - 4.3 Multiple Direct D.C. Convertor.
6 - 4.4 Characteristics Related to Convertors.
6 - 4.5 Characteristics Related to Direct D.C. Convertors.
7 - 5 SERVICE CONDITIONS.
7 - 5.1 Normal Service Conditions.
7 - 5.2 Unusual Service Conditions to be Identified by Purchaser.
8 - 5.3 Performance Requirements to be Stipulated by Purchaser.
9 - 6 RATED VALUES.
9 - 6.1 Rated Values for Direct D.C. Convertors.
9 - 6.2 Load Duty Identification.
9 - 6.3 Rated Input Direct Voltage Value for Battery Sources
9 - 7 TESTS.
9 - 7.1 Tests to be Performed.
10 - 7.2 Preliminary Light-load Test.
11 - 7.3 Checking of Auxiliary Devices.
11 - 7.4 Rated Continuous Output Current.
11 - 7.5 Temperature Rise.
11 - 7.6 Frequency Variation.
11 - 7.7 Rated Continuous Load/Light-load Tests.
12 - 7.8 Audible Noise.
12 - 7.9 Supply Overvoltage and Transient Energy Test.
12 - 7.10 Short-time Current.
12 - 7.11 Long-time Current.
12 - 7.12 Restart.
12 - 7.13 Mechanical.

Specifies the requirements for direct d.c. convertors (commonly known as d.c. chopper convertors), and is an extension of AS 1955.1 and AS 1955.2. It is technically similar to IEC 146-3.

This standard specifies requirements for semi-conductor direct d.c. convertors (d.c. chopper convertors) with regard to rated values, testing and performance characteristics.These requirements apply to all types of semiconductor direct d.c. convertors, i.e. d.c. to d.c. convertors without an a.c. link. The requirements of AS 1955, Parts 1 and 2, shall also apply to semiconductor direct d.c. convertors in so far as they are not in contradiction to the requirements herein.For some special applications, e.g. electric traction equipment, additional requirements may apply.NOTE: This standard may also be used for certain d.c. switches in control applications, if applicable.