BSI 21/30445647 DC:2021 Edition
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BS EN 60079-0. Explosive atmospheres – Part 0. Equipment. General requirements
Published By | Publication Date | Number of Pages |
BSI | 2021 | 140 |
PDF Catalog
PDF Pages | PDF Title |
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4 | CONTENTS |
11 | FOREWORD |
15 | 1 Scope |
16 | 2 Normative references |
18 | 3 Terms and definitions |
38 | 4 Equipment grouping 4.1 General 4.2 Group I |
39 | 4.3 Group II 4.4 Group III 4.5 Equipment for a particular explosive gas atmosphere 5 Temperatures 5.1 Environmental influences 5.1.1 Ambient temperature |
40 | 5.1.2 External source of heating or cooling 5.2 Service temperature, TS 1.1 5.3 Maximum surface temperature 5.3.1 Determination of maximum surface temperature |
41 | 5.3.2 Limitation of maximum surface temperature 5.3.2.1 Group I equipment 5.3.2.2 Group II equipment 5.3.2.3 Group III equipment 5.3.2.3.1 Maximum surface temperature for EPL Da 5.3.2.3.2 Maximum surface temperature for EPL Db |
42 | 5.3.2.3.3 Maximum surface temperature determined without a layer of dust for EPL Dc 5.3.3 Small component temperature for Group I or Group II electrical equipment |
43 | 5.3.4 Component temperature of smooth surfaces for Group I or Group II equipment |
44 | 6 Requirements for all equipment 6.1 General 6.2 Mechanical strength of equipment 6.3 Opening times 6.4 Circulating currents in enclosures (e.g. of large electric machines) |
45 | 6.5 Gasket retention 6.6 Electromagnetic and ultrasonic energy radiating equipment 6.6.1 General 6.6.2 Radio frequency sources |
46 | 6.6.3 Ultrasonic sources |
47 | 6.6.4 Optical radiation sources 7 Non-metallic enclosures and non-metallic parts of enclosures 7.1 General 7.1.1 Applicability 7.1.2 Specification of materials 7.1.2.1 General 7.1.2.2 Plastic materials |
48 | 7.1.2.3 Elastomers 7.1.2.4 Materials used for cementing 7.2 Thermal endurance 7.2.1 Tests for thermal endurance 7.2.2 Material selection |
49 | 7.2.3 Alternative qualification of elastomeric sealing O-rings 7.3 Resistance to ultraviolet light |
50 | 7.4 Electrostatic charges on external non-metallic materials 7.4.1 Applicability 7.4.2 Avoidance of a build-up of electrostatic charge for Group I or Group II |
53 | 7.4.3 Avoidance of a build-up of electrostatic charge for Group III |
54 | 7.5 Attached external conductive parts 8 Metallic enclosures and metallic parts of enclosures 8.1 Material composition 8.2 Group I |
55 | 8.3 Group II 8.4 Group III 8.5 Copper Alloys |
56 | 9 Fasteners 9.1 General fasteners 9.2 Special fasteners 9.3 Holes for special fasteners 9.3.1 Thread engagement 9.3.2 Tolerance and clearance |
57 | 9.4 Hexagon socket set screws |
58 | 10 Interlocking devices 11 Bushings 12 (Reserved for future use) 13 Ex Components 13.1 General 13.2 Mounting 13.3 Internal mounting 13.4 External mounting |
59 | 13.5 Ex Component certificate 14 Connection facilities 14.1 General 14.2 Type of Protection 14.3 Creepage and clearance 15 Connection facilities for earthing or bonding conductors 15.1 Equipment requiring earthing or bonding 15.1.1 Internal earthing 15.1.2 External bonding |
60 | 15.2 Equipment not requiring earthing 15.3 Size of protective earthing conductor connection 15.4 Size of equipotential bonding conductor connection 15.5 Protection against corrosion 15.6 Secureness of electrical connections |
61 | 15.7 Internal earth continuity plate 16 Entries into enclosures 16.1 General 16.2 Identification of entries 16.3 Cable glands |
62 | 16.4 Blanking elements 16.5 Thread adapters 16.6 Temperature at branching point and entry point |
63 | 16.7 Electrostatic charges of cable sheaths 17 Supplementary requirements for electric machines 17.1 General |
64 | 17.2 Ventilation 17.2.1 Ventilation openings 17.2.2 External fans 17.2.2.1 External fan hood and external ventilation screens 17.2.2.2 Fan impellors 1.1.1 Fan impellors manufactured from materials containing aluminium, magnesium, titanium, or zirconium, shall comply with Clause 8. 17.2.3 Cooling fans of rotating electric machines 17.2.3.1 Fans and fan hoods 17.2.3.2 Construction and mounting of the ventilating systems |
65 | 17.2.3.3 Clearances for the ventilating system 17.2.4 Auxiliary motor cooling fans 17.2.5 Room ventilating fans 17.2.5.1 Applicability 17.2.5.2 General 17.2.5.3 Fan and fan hoods 17.2.5.4 Construction and mounting |
66 | 17.2.5.5 Clearances for rotating parts 17.3 Bearings 18 Supplementary requirements for switchgear 18.1 Flammable dielectric 18.2 Disconnectors |
67 | 18.3 Group I – Provisions for locking 18.4 Doors and covers 19 Supplementary requirements for factory-wiring between enclosures |
68 | 1 20 Supplementary requirements for external plugs, socket outlets and connectors for field wiring connection 20.1 General 20.2 Explosive gas atmospheres 20.3 Explosive dust atmospheres 20.4 Energized plugs |
69 | 21 Supplementary requirements for luminaires 21.1 General 21.2 Covers for luminaires of EPL Mb, EPL Gb, or EPL Db 21.3 Covers for luminaires of EPL Gc or EPL Dc |
70 | 21.4 Sodium lamps 21.5 Replacement lamps 22 Supplementary requirements for caplights and handlights 22.1 Group I caplights 22.2 Group II and Group III caplights and handlights 23 Equipment incorporating cells and batteries 23.1 General 23.2 Interconnection of cells to form batteries |
71 | 23.3 Cell types |
73 | 23.4 Cells in a battery 23.5 Ratings of batteries 23.6 Interchangeability 23.7 Charging of primary batteries 23.8 Leakage 23.9 Connections 23.10 Orientation |
74 | 23.11 Replacement of cells or batteries 23.12 Replaceable battery pack 24 Documentation 24.1 Schedule drawings 24.2 Related drawings 25 Compliance of prototype or sample with documents 26 Type tests 26.1 General |
75 | 26.2 Test configuration 26.3 Tests in explosive test mixtures 26.4 Tests of enclosures 26.4.1 Order of tests 26.4.1.1 Metallic enclosures, metallic parts of enclosures and glass or ceramic parts of enclosures 26.4.1.2 Non-metallic enclosures or non-metallic parts of enclosures 26.4.1.2.1 General 26.4.1.2.2 Group I equipment |
76 | 26.4.1.2.3 Group II and Group III equipment |
77 | 26.4.2 Resistance to impact |
80 | 26.4.3 Drop test 26.4.4 Acceptance criteria 26.4.5 Degree of protection (IP) by enclosures 26.4.5.1 Test procedure |
81 | 26.4.5.2 Acceptance criteria 26.5 Thermal tests 26.5.1 Temperature measurement 26.5.1.1 General |
82 | 26.5.1.2 Service temperature, TS, 26.5.1.3 Maximum surface temperature |
84 | 26.5.2 Thermal shock test 26.5.3 Small component ignition test (Group I and Group II) 26.5.3.1 General 26.5.3.2 Procedure |
85 | 26.5.3.3 Acceptance criteria 26.6 Torque test for bushings 26.6.1 Test procedure 26.6.2 Acceptance criteria 26.7 Non-metallic enclosures or non-metallic parts of enclosures 26.7.1 General |
86 | 26.7.2 Test temperatures 26.8 Thermal endurance to heat |
87 | 26.9 Thermal endurance to cold 26.10 Resistance to UV light 26.10.1 General |
88 | 26.10.2 Light exposure 26.10.3 Acceptance criteria 26.11 Resistance to chemical agents for Group I equipment |
89 | 26.12 Earth continuity |
90 | 26.13 Surface resistance test of parts of enclosures of non-metallic materials |
91 | 26.14 Measurement of capacitance 26.14.1 General 26.14.2 Test procedure |
92 | 26.15 Verification of ratings of ventilating fans 26.16 Alternative qualification of elastomeric sealing O-rings 26.17 Transferred charge test 26.17.1 Test equipment |
93 | 26.17.2 Test sample 26.17.3 Test procedure |
94 | 27 Routine tests |
95 | 28 Manufacturer’s responsibility 28.1 Conformity with the Schedule Drawings 28.2 Certificate 28.3 Responsibility for marking 29 Marking 29.1 Applicability 29.2 Location 29.3 General |
96 | 29.4 Ex marking for explosive gas atmospheres |
99 | 29.5 Ex marking for explosive dust atmospheres |
101 | 29.6 Combined types (or levels) of protection 29.7 Multiple types of protection |
102 | 29.8 Ga equipment using two independent Gb types (or levels) of protection 29.9 Boundary wall 29.10 Ex Components |
103 | 29.11 Small Ex Equipment and small Ex Components 29.12 Extremely small Ex Equipment and extremely small Ex Components 29.13 Alternative marking of Ex Equipment and Ex Components using digital technology 29.14 Warning markings |
104 | 29.15 Cells and batteries 29.16 Electric machines supplied by a converter |
105 | 29.17 Examples of marking1F |
108 | 30 Instructions 30.1 General |
109 | 30.2 Cells and batteries |
110 | 30.3 Electric machines |
111 | 30.4 Ventilating fans 30.5 Cable glands |
112 | Annex A (normative) Supplementary requirements for cable glands A.1 General A.2 Constructional requirements A.2.1 Cable sealing |
113 | A.2.2 Filling compounds A.2.3 Clamping A.2.3.1 General A.2.3.2 Group II or III cable glands |
114 | A.2.4 Lead-in of cable A.2.4.1 Sharp edges A.2.4.2 Point of entry A.2.5 Release by a tool A.2.6 Fixing A.2.7 Degree of protection (IP) rating |
115 | A.3 Type tests A.3.1 Tests of clamping of non-armoured and braided cables A.3.1.1 Cable glands with clamping by the sealing ring |
116 | A.3.1.2 Cable glands with clamping by filling compound |
117 | A.3.1.3 Cable glands with clamping by means of a clamping device A.3.1.4 Clamping test A.3.1.5 Mechanical strength |
118 | A.3.2 Tests of clamping of armoured cables A.3.2.1 Tests of clamping where the armourings are clamped by a device integral to the gland A.3.2.1.1 General A.3.2.1.2 Clamping test A.3.2.1.3 Mechanical strength A.3.2.2 Tests of clamping where the armourings are not clamped by a device integral to the gland |
119 | A.3.3 Type test for resistance to impact |
120 | A.3.4 Test for degree of protection (IP) rating of cable glands A.4 Marking A.4.1 Marking of cable glands A.4.2 Identification of cable-sealing rings |
121 | A.5 Instructions |
122 | Annex B (normative) Requirements for Ex Components |
125 | Annex C (informative) Example of rig for resistance to impact test |
126 | Annex D (informative) Electric machines supplied by a converter |
127 | Annex E (informative) Temperature evaluation of electric machines |
130 | Annex F (informative) Guidance flowchart for tests of non-metallic enclosures or non-metallic parts of enclosures (26.4) |
131 | Annex G (informative) Guidance flowchart for tests of cable glands |
132 | Annex H (informative) Shaft voltages resulting in motor bearing or shaft brush sparking Discharge energy calculation H.1 General H.2 Assessment of the risk of ignition using ignition energy calculation |
133 | H.3 Shaft voltage determination for a rotating machine |
134 | H.4 Capacitance “C” calculation for a rotating machine |
136 | H.5 Energy “E” calculation for a rotating machine H.6 Assessment using reference curves |
138 | Bibliography |