BSI 18/30361074 DC:2018 Edition
$13.70
BS EN 60947-3. Low-voltage switchgear and controlgear – Part 3. Switches, disconnectors, switch-disconnectors and fuse-combination units
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 98 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | 30361074 |
| 3 | 121A_206e_CD (1) |
| 13 | FOREWORD |
| 15 | Introduction 1 Scope |
| 16 | 2 Normative references |
| 17 | 3 Terms, definitions and index of terms 3.1 General 3.2 Alphabetical index of terms |
| 18 | 3.3 Terms and definitions |
| 20 | 4 Classification 4.1 According to the utilization category 4.2 According to the method of operation of manually operated equipment 4.3 According to suitability for isolation 4.4 According to the degree of protection provided |
| 21 | 4.5 Summary of symbols for equipment types |
| 22 | 5 Characteristics 5.1 Summary of characteristics |
| 23 | 5.2 Type of equipment 5.3 Rated and limiting values for the main circuit 5.3.1 General 5.3.2 Rated voltages 5.3.2.1 Rated operational voltage (Ue) 5.3.2.2 Rated insulation voltage (Ui) 5.3.2.3 Rated impulse withstand voltage (Uimp) 5.3.3 Currents 5.3.3.1 Conventional free air thermal current (Ith) 5.3.3.2 Conventional enclosed thermal current (Ithe) 5.3.3.3 Rated operational currents (Ie) (or rated operational powers) 5.3.3.4 Rated uninterrupted current (Iu) 5.3.4 Rated frequency 5.3.5 Rated duty |
| 24 | 5.3.5.1 Eight-hour duty 5.3.5.2 Uninterrupted duty 5.3.6 Normal load and overload characteristics 5.3.6.1 Ability to withstand motor switching overload currents 5.3.6.2 Rated making capacity 5.3.6.3 Rated breaking capacity 5.3.7 Short-circuit characteristics 5.3.7.1 Rated short-time withstand current (Icw) 5.3.7.2 Rated short-circuit making capacity (Icm) 5.3.7.3 Vacant 5.3.7.4 Rated conditional short-circuit current |
| 25 | 5.4 Utilization category |
| 26 | 5.5 Control circuits 5.6 Auxiliary circuits 5.7 Relays and releases 5.8 Co-ordination with short circuit protective devices (SCPD) 6 Product information 6.1 Nature of information 6.2 Marking |
| 27 | 6.3 Instructions for installation, operation and maintenance, decommissioning and dismantling |
| 28 | 7 Normal service, mounting and transport conditions 8 Constructional and performance requirements 8.1 Constructional requirements 8.1.1 General 8.1.2.2 Glow wire testing 8.1.7 Additional requirements for equipment suitable for isolation 8.1.7.1 General 8.1.7.2 Additional constructional requirements |
| 29 | 8.1.9 Additional requirements for equipment provided with a neutral pole 8.2 Performance requirements 8.2.1 Operating conditions 8.2.1.1 General 8.2.1.2 Limits of operation of power operated equipment 8.2.1.3 Limits of operation of under-voltage relays and releases. 8.2.1.4 Limits of operation of shunt releases 8.2.2 Temperature-rise |
| 30 | 8.2.3 Dielectric properties 8.2.3.1 General 8.2.3.2 Impulse withstand voltage 8.2.3.3 Power-frequency withstand voltage of the main, auxiliary and control circuits 8.2.4 Ability to make and break under no-load, normal load and overload conditions 8.2.4.1 Making and breaking capacities |
| 31 | 8.2.4.2 Operational performance |
| 32 | 8.2.4.3 Mechanical durability 8.2.4.4 Electrical durability |
| 33 | 8.2.5 Ability to make, break or withstand short-circuit currents 8.2.6 Vacant 8.2.7 Additional performance requirements for equipment suitable for isolation 8.2.8 Critical load current performance: DC equipment 8.2.9 Overload requirements for equipment incorporating fuses 8.3 Electromagnetic compatibility 8.3.1 General 8.3.2 Immunity 8.3.2.1 General 8.3.2.2 Equipment incorporating electronic circuits |
| 34 | 8.3.3 Emission 8.3.3.1 Equipment not incorporating electronic circuits 8.3.3.2 Equipment incorporating electronic circuits |
| 35 | 9 Tests 9.1 Kind of tests 9.1.1 General 9.1.2 Type tests 9.1.3 Routine tests 9.1.3.1 General 9.1.3.2 Mechanical operation test 9.1.3.3 Dielectric test |
| 36 | 9.1.4 Sampling tests 9.1.5 Special tests 9.2 Type tests for constructional requirements 9.2.1 General 9.2.5 Mechanical properties of terminals 9.2.6 Verification of the effectiveness of indication of the main contacts position of equipment suitable for isolation 9.2.6.1 General 9.2.6.2 Condition of equipment for tests |
| 37 | 9.3 Performance 9.3.1 General 9.3.2 Test sequences |
| 38 | 9.3.3 General test conditions 9.3.3.1 General requirements 9.3.3.2 Simplified test for equipment having the same fundamental design |
| 39 | 9.3.3.3 Requirements for equipment having the same fundamental design 9.3.3.4 Simplified test procedure |
| 40 | 9.3.3.5 Test quantities 9.3.3.6 DC test current ripple 9.3.3.7 Evaluation of test results 9.3.3.8 Test report |
| 41 | 9.3.4 Test sequence I: general performance characteristics 9.3.4.1 General 9.3.4.2 Temperature-rise |
| 42 | 9.3.4.3 Test of dielectric properties 9.3.4.3.1 General |
| 43 | 9.3.4.4 Making and breaking capacities 9.3.4.4.1 Test values and conditions |
| 44 | 9.3.4.5 Transient recovery voltage 9.3.4.6 Behaviour of equipment during making and breaking capacity tests 9.3.4.7 Condition of equipment after the making and breaking capacity tests 9.3.4.8 Dielectric verification 9.3.4.9 Leakage current |
| 45 | 9.3.4.10 Temperature-rise verification 9.3.4.11 Strength of actuator mechanism 9.3.5 Test sequence II: operational performance capability 9.3.5.1 General |
| 46 | 9.3.5.2 Operational performance test 9.3.5.2.1 Test values and conditions 9.3.5.2.2 Test circuit 9.3.5.2.3 Transient recovery voltage 9.3.5.2.4 Switching overvoltages 9.3.5.2.5 Behaviour of the equipment during the operational performance test |
| 47 | 9.3.5.2.6 Condition of the equipment after the operational performance test 9.3.5.3 Dielectric verification 9.3.5.4 Leakage current 9.3.5.5 Temperature-rise verification 9.3.6 Test sequence III: short-circuit performance capability 9.3.6.1 General |
| 48 | 9.3.6.2 Short-time withstand current test 9.3.6.2.1 Test values and conditions 9.3.6.2.2 Test circuit 9.3.6.2.3 Test circuit calibration |
| 49 | 9.3.6.2.4 Test procedure 9.3.6.2.5 Behaviour of the equipment during the test 9.3.6.2.6 Conditions of the equipment after the test 9.3.6.3 Short-circuit making capacity test 9.3.6.3.1 Test values and conditions 9.3.6.3.2 Test circuit 9.3.6.3.3 Test circuit calibration |
| 50 | 9.3.6.3.4 Test procedure 9.3.6.3.5 Behaviour of the equipment during the test 9.3.6.3.6 Condition of the equipment after the test |
| 51 | 9.3.6.4 Dielectric verification 9.3.6.5 Leakage current 9.3.6.6 Temperature-rise verification 9.3.7 Test sequence IV: conditional short-circuit current 9.3.7.1 General 9.3.7.2 Circuit-breaker protected short-circuit withstand 9.3.7.3 Fuse protected short-circuit withstand 9.3.7.3.1 Test values and conditions |
| 52 | 9.3.7.3.2 Test circuit 9.3.7.3.3 Test circuit calibration 9.3.7.3.4 Test procedure |
| 53 | 9.3.7.3.5 Behaviour of the equipment during the test 9.3.7.3.6 Condition of the equipment after the test 9.3.7.4 Dielectric verification 9.3.7.5 Leakage current 9.3.7.6 Temperature-rise verification 9.3.8 Test sequence V: overload performance capability 9.3.8.1 General 9.3.8.2 Overload test 9.3.8.3 Dielectric verification 9.3.8.4 Leakage current 9.3.8.5 Temperature-rise verification |
| 54 | 9.3.9 Test sequence VI: critical load current performance of equipment with a DC rating 9.3.9.1 General 9.3.9.2 Determination of critical load current 9.3.9.2.1 Test values and conditions |
| 55 | 9.3.9.2.2 Test circuit 9.3.9.2.3 Value of critical load current 9.3.9.3 Critical load current performance |
| 57 | 9.4 Electromagnetic compatibility tests 9.4.1 General 9.4.2 Immunity 9.4.2.1 Equipment incorporating electronic circuits 9.4.3 Emission 9.4.3.1 Equipment not incorporating electronic circuits 9.4.3.2 Equipment incorporating electronic circuits 9.5 Special tests 9.5.1 General 9.5.2 Mechanical durability 9.5.3 Electrical durability |
| 59 | Annex A (normative) Equipment for direct switching of a single motor A.1 General A.2 Rated duty A.2.1 Intermittent periodic duty or intermittent duty A.2.2 Temporary duty A.3 Making and breaking capacities A.4 Utilization category |
| 62 | A.5 Operational performance |
| 63 | A.6 Mechanical durability A.7 Electrical durability A.8 Verification of making and breaking capacities A.9 Operational performance test |
| 64 | A.10 Special tests A.10.1 General A.10.2 Mechanical durability test A.10.2.1 Condition of the equipment for tests A.10.2.2 Operating conditions A.10.2.3 Test procedure A.10.2.4 Results to be obtained A.10.3 Electrical durability test |
| 65 | A.11 Critical load current performance for DC equipment |
| 66 | Annex B (informative) Items subject to agreement between manufacturer and user B.1 General |
| 67 | Annex C (normative) Single pole operated three pole switches C.1 General |
| 68 | C.2 Tests C.3 Test set-up and sequence C.3.1 Making and breaking capacities (9.3.4.3) and operational performance (9.3.5.2) C.3.2 Fuse protected short-circuit test (9.3.7.3) C.4 Condition of equipment after tests C.5 Instructions for use |
| 69 | Annex D (normative) Switches, disconnectors, switch-disconnectors and fuse-combination units for use in photovoltaic (PV) DC applications D.1 General D.1.1 Background D.1.2 Scope and object D.2 Normative references |
| 70 | D.3 Terms and definitions D.4 Classification D.4.1 According to the utilization category D.5 Characteristics D.5.3.6.1 Ability to withstand motor switching overload currents D.5.3.6.2 Rated making capacity D.5.3.6.3 Rated breaking capacity D.5.3.7.1 Rated short-time withstand current (Icw) D.5.4 Utilization category |
| 71 | D.6 Product information D.7 Normal service, mounting and transport conditions D.7.1.1 Ambient air temperature |
| 72 | D.8 Constructional and performance requirements D.8.1.4 Clearances and creepage distances D.8.1.12 Degrees of protection of enclosed equipment D.8.2.3 Dielectric properties |
| 73 | D.8.2.4.1 Making and breaking capacities D.8.2.4.2 Operational performance D.8.2.4.2.1 Operational performance at a normal ambient temperature |
| 75 | D.8.2.4.2.2 Operational performance at a low ambient temperature D.8.2.4 Electrical durability D.8.2.8 Critical load current performance D.9 Tests D.9.3.2 Test sequences |
| 76 | D.9.3.3 General test conditions D.9.3.3.1 General requirements |
| 77 | D.9.3.4.4.1 Test values and conditions D.9.3.5.2.1 Test values and conditions D.9.3.5.2.2 Test circuit D.9.3.6.2.2 Test circuit D.9.3.8.2 Overload test D 9.3.9.2.1 Test values and conditions |
| 78 | D.9.3.10 Thermal cycling test D.9.3.11 Climatic test |
| 79 | D.9.3.12 Temperature-rise verification with solar effects – Outdoor units only D.9.3.13 Verification of resistance of insulating materials to abnormal heat and fire D.9.3.14 Degree of protection – Enclosed equipment D.9.3.15 Clearance and creepage distances D.9.4 Electromagnetic compatibility tests |
| 80 | D.9.5.2 Electrical durability |
| 81 | Annex E (normative) Additional requirements for LV switchgear intended for connection of aluminium conductors E.1 Object E.2 Normative references E.3 Terms, definitions and index of terms |
| 82 | E.4 Classification E.5 Characteristics E.6 Product information E.6.1 Nature of information E.6.2 Marking E.6.3 Instructions for installation, operation and maintenance |
| 83 | E.7 Normal service, mounting and transport conditions E.8 Constructional and performance requirements E.9 Tests E.9.1 General |
| 84 | E.9.2 Current cycling test E.9.2.1 General E.9.2.2 Preparation E.9.2.3 Test arrangement |
| 87 | E.9.2.4 Temperature measurements E.9.2.5 Test method |
| 88 | E.9.2.6 Acceptance criteria |
| 89 | E.9.3 Mechanical properties of terminals E.9.3.1 Flexion test |
| 90 | E.9.3.2 Pull-out test E.9.4 Test for insertability of unprepared round aluminium conductors having the maximum cross-section |
| 93 | Annex F (informative) Power loss F.1 General F.2 Test methods F.2.1 General F.2.2 General case for AC switches and/or disconnectors F.2.3 General case for AC fused combination units and fuse disconnectors. |
| 94 | F.2.4 Switches and/or disconnectors of rated current not exceeding 400 A F.2.5 Fused combination units and fuse disconnectors of rated current not exceeding 400 A |
| 95 | F.3 Test procedure |
| 98 | Bibliography |
