Draft Details
- Portable power cables (New Edition)
- DRAFT STANDARD
- Legal Notice for Draft Standards
- Preface
- C22.2 No. 96-1723
- + 1 Scope
- 1.1
- 1.2
- 1.3
- 1.4
- 1.5
- 1.6
- 2 Reference publications
- + 3 Definitions and abbreviations
- 3.1 Definitions
- 3.2 Abbreviations
- 4 General requirements
- + 5 Multiconductor round cables for mining and ge...
- 5.1 Maximum voltage
- 5.2 Size range
- + 5.3 Construction
- + 5.3.1 Power conductors
- + 5.3.1.1 Conductors
- 5.3.1.1.1
- 5.3.1.1.2
- 5.3.1.1.3
- + 5.3.1.2 Conductor shielding
- 5.3.1.2.1
- 5.3.1.2.2
- 5.3.1.2.3
- 5.3.1.2.4
- 5.3.1.2.5
- 5.3.1.2.6
- + 5.3.2 Bonding (grounding) conductors
- 5.3.2.1
- 5.3.2.2
- 5.3.2.3
- + 5.3.3 Ground-check conductors
- 5.3.3.1
- 5.3.3.2
- 5.3.3.3
- 5.3.3.4
- 5.3.3.5
- 5.3.3.6
- 5.3.3.7
- + 5.3.4 Insulation
- 5.3.4.1
- 5.3.4.2
- 5.3.4.3
- + 5.3.5 Shielding
- 5.3.5.1
- 5.3.5.2
- 5.3.5.3
- 5.3.5.4
- + 5.3.5.5 Insulation shield — Nonmetallic compone...
- 5.3.5.5.1
- 5.3.5.5.32
- 5.3.5.5.43
- + 5.3.6 Power conductor identification
- 5.3.6.1
- 5.3.6.2
- 5.3.7 Ground-check conductor identification
- + 5.3.8 Assembly
- 5.3.8.1
- 5.3.8.2
- 5.3.8.3
- 5.3.8.4
- 5.3.8.5
- 5.3.8.6
- + 5.3.9 Jackets
- 5.3.9.1 General
- + 5.3.9.2 Thermoset jackets
- 5.3.9.2.1
- 5.3.9.2.2
- 5.3.9.2.3
- + 5.3.9.2.4
- 5.3.9.2.4.1
- 5.3.9.2.4.2
- 5.3.9.2.4.3
- 5.3.9.2.4.4
- 5.3.9.2.5
- 5.3.9.2.6
- 5.3.9.2.7
- + 5.3.9.3 Thermoplastic jackets
- 5.3.9.3.1
- 5.3.9.3.2
- 5.3.9.3.3
- 5.3.9.3.4
- 5.3.9.3.5
- 5.3.9.3.6
- 5.3.10 Overall diameters
- + 5.4 Marking
- 5.4.1 Product marking
- 5.4.2 Package marking
- 5.4.3 Alternative marking
- + 5.5 Tests
- 5.5.1 General
- 5.5.2 Insulation deformation test
- + 5.5.3 Dielectric voltage withstand test
- 5.5.3.1
- 5.5.3.2
- 5.5.3.3
- + 5.5.4 Insulation resistance test for power cond...
- 5.5.4.1
- 5.5.4.2
- + 5.5.5 Test for permittivity and power factor of...
- 5.5.5.1
- 5.5.5.2
- 5.5.6 Test for accelerated water absorption of ...
- 5.5.7 FT1 flame test
- 5.5.8 FT5 flame test
- + 5.5.9 Volume resistivity test
- 5.5.9.1 General
- 5.5.9.2 Resistivity of extruded semiconducting ...
- + 5.5.9.3 Physical tests for semiconducting mater...
- 5.5.9.3.1 Test specimens
- 5.5.9.3.2 Elongation test
- 5.5.9.3.3 Brittleness temperature test
- + 5.5.10 Cold bend test
- 5.5.10.1
- 5.5.10.2
- 5.5.11 Low temperature impact test
- + 5.5.12 Weather resistance test
- 5.5.12.1
- 5.5.12.2
- + 6 Multiconductor round cables for mining and ge...
- + 6.1 Construction
- 6.1.1 Size range
- + 6.1.2 Power conductors
- 6.1.2.1
- 6.1.2.2
- + 6.1.3 Bonding (grounding) conductors
- 6.1.3.1
- 6.1.3.2
- + 6.1.4 Ground-check conductors
- 6.1.4.1
- 6.1.4.2
- 6.1.4.3
- 6.1.4.4
- 6.1.4.5
- 6.1.4.6
- 6.1.4.6 7
- + 6.1.5 Insulation
- 6.1.5.1
- 6.1.5.2
- + 6.1.6 Shielding
- 6.1.6.1
- 6.1.6.2
- + 6.1.7 Power conductor identification
- 6.1.7.1
- 6.1.7.2
- 6.1.8 Ground-check conductor identification
- 6.1.9 Assembly
- 6.1.10 Shielding, Type SHC-GC
- + 6.1.11 Jackets
- 6.1.11.1 General
- + 6.1.11.2 Thermoset jackets
- 6.1.11.2.1
- 6.1.11.2.2
- 6.1.11.2.3
- 6.1.11.2.4
- + 6.1.11.3 Thermoplastic jackets
- 6.1.11.3.1
- 6.1.11.3.2
- 6.1.11.3.3
- 6.1.11.3.4
- 6.1.11.3.5
- 6.1.11.3.6
- 6.1.12 Overall diameters
- + 6.2 Marking
- 6.2.1 Product marking
- 6.2.2 Package marking
- 6.2.3 Alternative marking
- + 6.3 Tests
- 6.3.1 General
- 6.3.2 Insulation deformation test
- 6.3.3 Spark test
- + 6.3.4 Dielectric voltage withstand test
- 6.3.4.1
- 6.3.4.2
- 6.3.4.3
- 6.3.5 Insulation resistance test
- 6.3.6 Test for accelerated water absorption of ...
- 6.3.7 FT1 flame test
- 6.3.8 FT5 flame test
- 6.3.9 Volume resistivity test
- 6.3.10 Cold bend test
- 6.3.11 Low temperature impact test
- 6.3.12 Weather resistance test
- + 6.3.13 Jacket resistance of nonshielded cables
- 6.3.13.1
- 6.3.13.2
- + 7 Single-conductor cables for mining and genera...
- + 7.1 Single-conductor Type W cables rated up to ...
- 7.1.1 General
- + 7.1.2 Construction
- 7.1.2.1 Power conductors
- + 7.1.2.2 Insulation
- 7.1.2.2.1
- 7.1.2.2.2
- + 7.1.2.3 Jackets
- 7.1.2.3.1
- 7.1.2.3.2
- 7.1.2.4 Overall diameters
- + 7.2 Type SH cables rated 5, 8, 15, 25, and 35 k...
- 7.2.1 General
- + 7.2.2 Construction
- 7.2.2.1 Power conductors
- + 7.2.2.2 Conductor shielding
- 7.2.2.2.1
- 7.2.2.2.2
- 7.2.2.2.3
- 7.2.2.2.4
- 7.2.2.2.5
- 7.2.2.2.6
- + 7.2.2.3 Insulation
- 7.2.2.3.1
- 7.2.2.3.2
- 7.2.2.4 Insulation shield
- 7.2.2.5 Shielding
- + 7.2.2.6 Jackets
- 7.2.2.6.1
- 7.2.2.6.2
- 7.2.2.7 Overall diameters
- + 7.3 Marking
- 7.3.1 Product marking
- 7.3.2 Package marking
- 7.3.3 Alternative marking
- + 7.4 Tests
- 7.4.1 General
- 7.4.2 XLPE insulation deformation test
- + 7.4.3 Dielectric voltage withstand test
- 7.4.3.1 Test for single-conductor Type W cables...
- 7.4.3.2 Test for Type SH
- 7.4.3.3 Apparatus and method
- 7.4.4 Insulation resistance test
- 7.4.5 Test for permittivity and power factor of...
- 7.4.6 Test for accelerated water absorption of ...
- 7.4.7 FT1 flame test
- 7.4.8 FT5 flame test for cables for use in unde...
- 7.4.9 Volume resistivity test
- 7.4.10 Cold bend test
- 7.4.11 Low temperature impact test
- 7.4.12 Weather resistance test (optional)
- 7.4.13 Jacket resistance of Type W nonshielded ...
- + 8 Two- and three-conductor flat cables for mini...
- + 8.1 General
- + 8.1.1 Two-conductor flat twin cables
- 8.1.1.1 Type W, without bonding (grounding) con...
- 8.1.1.2 Type G, with bonding (grounding) conduc...
- + 8.1.2 Three-conductor flat cables
- 8.1.2.1 Type G, three-conductor flat, with bond...
- 8.1.2.2 Type G-GC, three-conductor flat, with b...
- + 8.2 Construction
- 8.2.1 Size range
- + 8.2.2 Power conductors
- 8.2.2.1
- 8.2.2.2
- + 8.2.3 Bonding (grounding) conductors
- 8.2.3.1
- 8.2.3.2
- 8.2.3.3
- 8.2.3.4
- 8.2.4 Ground-check conductor
- + 8.2.5 Insulation
- 8.2.5.1
- 8.2.5.2
- 8.2.6 Power conductor identification
- 8.2.7 Ground-check conductor identification
- + 8.2.8 Jackets
- 8.2.8.1
- 8.2.8.2
- 8.2.8.3
- 8.2.9 Overall dimensions
- + 8.3 Marking
- 8.3.1 Product marking
- 8.3.2 Package marking
- 8.3.3 Alternative marking
- + 8.4 Tests
- 8.4.1 General
- 8.4.2 Spark test
- + 8.4.3 Dielectric voltage withstand test
- 8.4.3.1
- 8.4.3.2
- 8.4.4 Insulation resistance test
- 8.4.5 Test for accelerated water absorption of ...
- 8.4.6 FT1 flame test
- 8.4.7 FT5 flame test for cables for use in unde...
- 8.4.8 Cold bend test
- 8.4.9 Low temperature impact test
- 8.4.10 Weather resistance testxt (optional)
- 8.4.11 Jacket resistance
- + 9 Three-conductor SHD-PCG round cables with a c...
- 9.1 General
- + 9.2 Construction
- 9.2.1 General
- + 9.2.2 Power conductors
- 9.2.2.1
- 9.2.2.2
- 9.2.2.3
- 9.2.3 Bonding (grounding) conductor
- + 9.2.4 Ground-check conductor
- 9.2.4.1
- 9.2.4.2
- 9.2.4.3
- 9.2.4.4
- 9.2.4.5
- 9.2.4.6
- + 9.2.5 Insulation
- 9.2.5.1
- 9.2.5.2
- 9.2.6 Shielding
- + 9.2.7 Power conductor identification
- 9.2.7.1
- 9.2.7.2
- + 9.2.8 Assembly
- 9.2.8.1
- 9.2.8.2
- + 9.2.9 Jackets
- 9.2.9.1
- 9.2.9.2
- 9.2.9.3
- 9.2.10 Overall diameters
- + 9.3 Marking
- 9.3.1 Product marking
- 9.3.2 Package marking
- 9.3.3 Alternative marking
- + 9.4 Tests
- 9.4.1 General
- + 9.4.2 Dielectric voltage withstand test
- 9.4.2.1
- 9.4.2.2
- 9.4.3 Insulation resistance test
- 9.4.4 Test for permittivity and power factor of...
- 9.4.5 Test for accelerated water absorption of ...
- 9.4.6 FT1 flame test
- 9.4.7 FT5 flame test for cables for use in unde...
- 9.4.8 Test for volume resistivity of conductor ...
- + 10 Arc-welding cable
- 10.1 General
- + 10.2 Construction
- + 10.2.1 Conductors
- 10.2.1.1
- 10.2.1.2
- 10.2.1.3
- 10.2.2 Separator
- + 10.2.3 CoveringInsulation
- 10.2.3.1
- 10.2.3.2
- 10.2.3.3
- + 10.3 Tests
- + 10.3.1 Flame tests
- 10.3.1.1 FT2 flame test — Mandatory
- 10.3.1.2 FT1 flame test — Optional
- 10.3.1.3 FT4 flame test — Optional
- 10.3.1.4 FT5 flame test — Optional
- 10.3.2 Test for thermal aging of covering
- 10.3.3 Cold bend test
- 10.3.4 Low temperature impact test — Optional
- + 10.4 Markings
- 10.4.1 Product marking
- 10.4.2 Package marking
- 10.4.3 Alternative marking
- + 11 Single-conductor Type PPC rated 600 V
- 11.1 General
- + 11.2 Construction
- + 11.2.1 Conductors
- 11.2.1.1
- 11.2.1.2
- 11.2.1.3
- 11.2.2 Separator
- An optional separator of suitable material may...
- + 11.2.3 Insulation
- + 11.2.3.1
- 11.2.3.1.1
- 11.2.3.1.2
- 11.2.3.2
- 11.2.3.3
- 11.2.3.4
- + 11.3 Tests
- + 11.3.1 Flame tests
- 11.3.1.1 FT5 flame test — Mandatory
- 11.3.1.2 FT4 flame test — Optional
- 11.3.2 Test for thermal aging of insulation
- 11.3.3 Cold bend test
- 11.3.4 Low temperature impact test — Optional
- 11.3.5 Weather resistance test
- + 11.3.6 Electrical tests
- 11.3.6.1 Dielectric voltage withstand — Factory...
- 11.3.6.2 Insulation resistance at 15.6 °C
- 11.3.6.3 Accelerated water absorption— Optional...
- 11.3.6.4 Spark — Factory test
- + 11.3.7 Mechanical tests
- 11.3.7.1 Crush at room temperature
- 11.3.7.2 Crush at rated temperature
- 11.3.7.3 Impact
- + 11.4 Markings
- 11.4.1 Product marking
- 11.4.2 Package marking
- 11.4.3 Alternative marking
- + 12 Single and multiconductor Type PPC cables fo...
- 12.1 General
- + 12.2 Construction
- 12.2.1 Size range
- + 12.2.2 Power conductors
- 12.2.2.1
- 12.2.2.2
- + 12.2.3 Bonding (grounding) conductors
- 12.2.3.1
- 12.2.3.2
- 12.2.3.3
- 12.2.3.4
- 12.2.3.5
- + 12.2.4 Ground-check conductors
- 12.2.4.1
- 12.2.4.2
- 12.2.4.3
- 12.2.4.4
- 12.2.4.5
- 12.2.4.5 6
- 12.2.5 Insulation
- + 12.2.6 Power conductor identification
- 12.2.6.1
- 12.2.6.2
- 12.2.7 Ground-check conductor identification
- 12.2.8 Assembly
- + 12.2.9 Jackets
- 12.2.9.1
- 12.2.9.2
- 12.2.9.3
- 12.2.9.4
- 12.2.9.5
- 12.2.10 Overall diameter
- + 12.3 Marking
- 12.3.1 Product marking
- 12.3.2 Package marking
- 12.3.3 Alternative marking
- + 12.4 Tests
- 12.4.1 General
- 12.4.2 TPE insulation deformation test
- 12.4.3 Spark test
- + 12.4.3 4 Dielectric voltage withstand test
- 12.4.34.1
- 12.4.34.2
- 12.4.34.3
- 12.4.45 Insulation resistance test
- 12.4.5 6 FT1 flame test
- 12.4.6 7 FT5 flame test (optional)
- 12.4.7 8 Cold bend test
- 12.4.8 9 Low temperature impact test — Optional...
- 12.4.9 10 Weather resistance test
- + 12.4.10 11 Jacket resistance
- 12.4.1011.1
- 12.4.1011.2
- 12.4.11 12 Test for accelerated water absorptio...
- + 13 Flexible multiconductor cable for use with c...
- 13.1 General
- + 13.2 Construction
- 13.2.1 Conductors
- 13.2.2 Size
- + 13.2.3 DC resistance
- 13.2.3.1
- 13.2.3.2
- + 13.2.4 Insulation
- 13.2.4.1
- 13.2.4.2
- 13.2.4.3
- 13.2.5 Assembly
- 13.2.6 Identification of conductors
- 13.2.7 Overall jacket
- + 13.3 Marking
- 13.3.1 Product marking
- 13.3.2 Package marking
- 13.3.3 Alternative marking
- + 13.4 Tests
- 13.4.1 General
- + 13.4.2 Cold bend test
- 13.4.2.1
- 13.4.2.2
- 13.4.3 Deformation
- + 13.4.4 Heat shock (applicable to types with TPE...
- 13.4.4.1
- 13.4.4.2
- 13.4.5 FT1 flame test
- 13.4.6 FT4 flame test — Optional
- 13.4.7 Spark test
- + 13.4.8 Insulation resistance at elevated temper...
- 13.4.8.1
- 13.4.8.2
- 13.4.9 Permittivity — Optional
- + 13.4.10 Weather resistance test — (Optional)
- 13.4.10.1
- 13.4.10.2
- 13.4.11 Dielectric voltage withstand test
- 14 Multiconductor round cables for variable fre...
- + applications rated up to 15 kV
- 14.1 General
- + 14.2 Maximum cable voltage and power conductor ...
- 14.2.1
- 14.2.2
- + 14.3 Construction
- + 14.3.1 Power conductors
- + 14.3.1.1 Conductors
- 14.3.1.1.1
- 14.3.1.1.2
- 14.3.1.1.3
- + 14.3.1.2 Conductor shielding
- + 14.3.1.2.1
- 14.3.1.2.1.1
- 14.3.1.2.1.2
- 14.3.1.2.2
- 14.3.1.2.3
- 14.3.1.2.4
- 14.3.1.2.5
- + 14.3.2 Bonding (grounding) conductors
- 14.3.2.1
- 14.3.2.2
- 14.3.2.3
- + 14.3.3 Ground-check conductors
- 14.3.3.1
- 14.3.3.2
- 14.3.3.3
- 14.3.3.4
- 14.3.3.5
- + 14.3.4 Insulation
- 14.3.4.1
- 14.3.4.2
- 14.3.4.3
- + 14.3.5 Insulation shielding
- 14.3.5.1 Metallic components
- + 14.3.5.2 Non-metallic components
- 14.3.5.2.1
- 14.3.5.2.2
- 14.3.5.2.3
- + 14.3.6 Power conductor identification
- 14.3.6.1
- 14.3.6.2
- 14.3.7 Ground-check conductor(s) identification...
- + 14.3.8 Assembly
- 14.3.8.1 General
- 14.3.8.2 Bare bonding (grounding) conductors
- 14.3.8.3 Ground-check conductor
- 14.3.8.4 Optical fibre component
- 14.3.8.5 Binders and reinforcing twine
- 14.3.8.6 Overall shield
- + 14.3.9 Jackets
- 14.3.9.1 General
- + 14.3.9.2 Thermoset jackets
- 14.3.9.2.1
- 14.3.9.2.5
- 14.3.9.2.6
- + 14.3.9.3 Thermoplastic jackets
- 14.3.9.3.1
- 14.3.9.3.2
- 14.3.9.3.3
- 14.3.9.3.4
- 14.3.9.3.5
- 14.3.9.3.6
- 14.3.10 Overall diameters
- + 14.4 Marking
- 14.4.1 Product marking
- 14.4.2 Package marking
- 14.4.3 Alternative marking
- + 14.5 Tests
- 14.5.1 General
- 14.5.2 Insulation deformation test
- 14.5.3 Spark test — Constructions up to 2 kV
- + 14.5.4 Dielectric voltage withstand test
- 14.5.4.1
- 14.5.4.2
- 14.5.4.3
- 14.5.5 Insulation resistance test for power con...
- 14.5.6 Test for permittivity and power factor o...
- 14.5.7 Test for accelerated water absorption of...
- 14.5.8 FT1 flame test
- 14.5.9 FT5 flame test
- 14.5.10 FT4 flame test — Optional
- 14.5.11 Volume resistivity test
- 14.5.12 Cold bend test
- 14.5.13 Low temperature impact test
- 14.5.14 Weather resistance test — ( Optional)
- + 15 Single-conductor flexible cables (DLO) for p...
- + 15.1 Single-conductor Type DLO cables rated 2 k...
- 15.1.1 General
- + 15.1.2 Construction
- 15.1.2.1 Size range
- 15.1.2.2 Power conductors
- 15.1.2.3 Separator
- + 15.1.2.4 Insulation
- 15.1.2.4.1
- 15.1.2.4.2
- + 15.1.2.5 Jackets
- 15.1.2.5.1
- 15.1.2.5.2
- 15.1.2.6 Overall diameters
- + 15.2 Marking
- 15.2.1 Product marking
- 15.2.2 Package marking
- 15.2.3 Alternative marking
- + 15.3 Dielectric voltage withstand test
- 15.3.1
- 15.3.2
- 15.3.3
- + 15.4 Insulation resistance test
- 15.4.1
- 15.4.2
- 15.5 FT1 flame test
- 15.6 FT5 flame test — Optional
- 15.7 FT4 flame test — Optional
- 15.8 Cold bend test
- 15.9 Low temperature impact test
- 15.10 Weather resistance test
- 15.11 Test for accelerated water absorption — O...
- + 16 Special Constructions
- 16.1 General
- 16.2 Cable Components
- 16.3 Markings
- 16.4 Testsing
- Table 1
- Table 2
- Table 3
- Table 4A
- Table 4B
- Table 5A
- Table 5B
- Table 6
- Table 7
- Table 8
- Table 10
- Table 11
- Table 12
- Table 13
- Table 14
- Table 15
- Table 16
- Table 17
- Table 18
- Table 19
- Table 20
- Table 21
- Table 22
- Table 23
- Table 24
- Table 25
- Table 26
- Table 27
- Table 28
- Table 29
- Table 30
- Table 31
- Table 32
- Table 33
- Table 34
- Table 35
- Table 36
- Table 37
- Table 38
- Table 39
- Table 40
- Table 41
- Table 42
- Table 43
- Table 44
- Table 45
- Table 46
- Table 47
- Table 48
- + 16 Special Constructions
- 16.1 General
- 16.2 Cable Components
- 16.3 Markings
- 16.4 Testing
- Table 49
- + Annex A (informative)
- A.1
- + Annex B (informative)
- Figure B.1
1.1
This Standard specifies construction and testing requirements for portable power cables normally used in applications where the cables are subject to frequent flexing and where installation is in accordance with CSA M421 and/or the Canadian Electrical Code, Part I where applicable.
1.2
The cable constructions specified in Clauses 5 to 9 and Clauses 12 to 15 of this Standard are suitable for use at a maximum conductor temperature of 90 °C under normal operating conditions in wet or dry locations, outdoors or in underground mines, and in rugged environments. The special cable constructions described in Clauses 10 and 11 are suitable for use at a maximum conductor temperature of 105 °C.
1.3
This Standard does not specify all types, sizes, and voltage ratings of portable power cables that can be required for particular applications.
1.4
This Standard specifies the following categories of cables:
Clause
Category
5 Thermoset and PUR multiconductor round cables for mining and general applications rated over 25 kV and up to 35 kV
Types: SHD, SHD-BGC (balanced ground check), SHD-GC,
6 Thermoset and PUR multiconductor round cables for mining and general applications rated up to 2 kV
Types: W, G, G-BGC (balanced ground check), G-GC, SHC-GC, SHD, SHD-BGC (balanced ground check), SHD-GC and SHD-R
7 Thermoset single-conductor cables for mining and general applications rated up to 35 kV
Types: W, SH
8 Thermoset two-and three-conductor flat cables for mining and general applications rated up to 2 kV — suitable for underground applications only
Types: G, G-GC, W
9 Thermoset three-conductor round cables with a central bonding conductor for underground coal mining applications rated up to 5 kV
Types: SHD-PCG
10 Arc-welding cable
11 Single-conductor portable power cable rated 600 V
Types: PPC, PPC/TPE
12 Single and multiconductor portable power cables for general applications rated up to 2 kV
Types: PPC, PPC/TPE
13 Flexible multiconductor cable for use with cranes and hoists rated 600 V (festoon cable)
14 Variable frequency drive cable, multiconductor, round, for mining and general applications rated up to 15 kV
Types: VFD, VFD-GC, VFD-BGC (balanced ground check)
15 DLO (diesel locomotive) cable, single conductor, used for portable and general permanent applications rated 2 kV
16 Thermoset and PUR multiconductor round special construction cables for mining and general applications rated 2 kV and up to 835 kV
Types: SHD-SP, SHD-BGC-SP (balanced ground check), SHD-GC-SP
In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard.
Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.
Notes to tables and figures are considered part of the table or figure and may be written as requirements.
Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
1.6
The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.
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