This standard is primarily applicable to non-interrupted creep-testing of stranded conductors for overhead lines such as those specified by GB/T 1179. Procedures for interpreting the results are also included.
The object of the test is principally to calculate creep for any purpose and to compare creep of different conductors.
The requirement of this standard aims at an accuracy of 1 %. However, it should be recognized that due to variations occurring in the manufacturing process, the creep obtained in the test is not a precise value for all conductors of the type tested.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
For the purpose of this standard, the following definitions apply.
3.1
sample length
total length of the conductor between the end fittings
3.2
gauge length
Foreword i 1 Scope 2 Normative references 3 Definitions 4 Units, instrumentation and calibration 5 Sample selection and preparation 6 Temperature and temperature variations 7 Load 8 Test procedure 9 Data recording 10 Data processing Annex A (Informative) Practice
Overhead electrical conductors -
Creep test procedures for stranded conductors
1 Scope
This standard is primarily applicable to non-interrupted creep-testing of stranded conductors for overhead lines such as those specified by GB/T 1179. Procedures for interpreting the results are also included.
The object of the test is principally to calculate creep for any purpose and to compare creep of different conductors.
The requirement of this standard aims at an accuracy of 1 %. However, it should be recognized that due to variations occurring in the manufacturing process, the creep obtained in the test is not a precise value for all conductors of the type tested.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 1179 Round wire concentric lay overhead electrical stranded conductors
3 Definitions
For the purpose of this standard, the following definitions apply.
3.1
sample length
total length of the conductor between the end fittings
3.2
gauge length
Contents of GB/T 22077-2008
Foreword i
1 Scope
2 Normative references
3 Definitions
4 Units, instrumentation and calibration
5 Sample selection and preparation
6 Temperature and temperature variations
7 Load
8 Test procedure
9 Data recording
10 Data processing
Annex A (Informative) Practice
