Tests on Electric Cables under Fire Conditions — Part 3: Tests on Bunched Wires or Cables
1 General
1.1 Scope
This standard describes a method of type approval testing to define the ability of bunched cables to restrain flame propagation in defined conditions regardless of their application, i.e. power, telecommunications (including data transmission and optical fibre cables), etc.
Three categories are defined and distinguished by test duration, and the volume of non-metallic material of the sample under test (see Table 1); they are not necessarily related to different safety levels in actual cable installations. Category A has two designations for the method of mounting.
1.2 Normative References
The following normative document contains provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the edition indicated was valid. All normative documents are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below.
GB/T 18380.1-2001 Tests on Electric Cables under Fire Conditions — Part 1: Test on a Single Vertical Insulated Wire or Cable (idt IEC 60332-1:1993)
GB/T 18380.2-2001 Tests on Electric Cables under Fire Conditions — Part 2: Test on a Single Small Vertical Insulated Copper Wire or Cable (idt IEC 60332-2:1989)
GB/T 2951.3-1997 Common Test Methods for Insulating and Sheathing Materials of Electric Cable — Part 1: Methods for General Application — Section Three: Methods for Determining the Density — Water Absorption Tests — Shrinkage Test (idt IEC 60811-1- 3:1993)
2 General Detail of Test Procedures
2.1 Test sample and categories
The test sample should comprise a number of test pieces of cable from the same length, each having a minimum length of 3.5 m.
The total number of 3.5m test pieces in the test sample should be in accordance with one of the three categories as follow:
Category A: The number of test pieces required to provide a nominal total volume of non-metallic material of 7 L per metre.
1 General
2 General Detail of Test Procedures
3 Method of Mounting Test Samples and Flame Application Times for Category A, Designation F/R or F
4 Method of Mounting Test Samples and Flame Application Times for Category B, Designation F
5 Method of Mounting Test Samples and Flame Application Times for Category C, Designation F
Tests on Electric Cables under Fire Conditions — Part 3: Tests on Bunched Wires or Cables
1 General
1.1 Scope
This standard describes a method of type approval testing to define the ability of bunched cables to restrain flame propagation in defined conditions regardless of their application, i.e. power, telecommunications (including data transmission and optical fibre cables), etc.
Three categories are defined and distinguished by test duration, and the volume of non-metallic material of the sample under test (see Table 1); they are not necessarily related to different safety levels in actual cable installations. Category A has two designations for the method of mounting.
1.2 Normative References
The following normative document contains provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the edition indicated was valid. All normative documents are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below.
GB/T 18380.1-2001 Tests on Electric Cables under Fire Conditions — Part 1: Test on a Single Vertical Insulated Wire or Cable (idt IEC 60332-1:1993)
GB/T 18380.2-2001 Tests on Electric Cables under Fire Conditions — Part 2: Test on a Single Small Vertical Insulated Copper Wire or Cable (idt IEC 60332-2:1989)
GB/T 2951.3-1997 Common Test Methods for Insulating and Sheathing Materials of Electric Cable — Part 1: Methods for General Application — Section Three: Methods for Determining the Density — Water Absorption Tests — Shrinkage Test (idt IEC 60811-1- 3:1993)
2 General Detail of Test Procedures
2.1 Test sample and categories
The test sample should comprise a number of test pieces of cable from the same length, each having a minimum length of 3.5 m.
The total number of 3.5m test pieces in the test sample should be in accordance with one of the three categories as follow:
Category A: The number of test pieces required to provide a nominal total volume of non-metallic material of 7 L per metre.
Contents of GB/T 18380.3-2001
1 General
2 General Detail of Test Procedures
3 Method of Mounting Test Samples and Flame Application Times for Category A, Designation F/R or F
4 Method of Mounting Test Samples and Flame Application Times for Category B, Designation F
5 Method of Mounting Test Samples and Flame Application Times for Category C, Designation F