BS 3535-1(1996) : 1996
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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ISOLATING TRANSFORMERS AND SAFETY ISOLATING TRANSFORMERS - REQUIREMENTS
07-04-2003
BS EN 61558-1 : 2005
BS EN 61558-2-1:2007
BS EN 61558-2-8:2010
BS EN 61558-2-5:2010
BS EN 61558-2-7:1998
BS EN 61558-2-2:2007
BS EN 61558-2-17:1998
BS EN 61558-2-6:2009
BS EN 61558-2-4:2009
BS EN 61558-2-9:2011
23-11-2012
General plan of the Standard
Chapter 1: General requirements
1 Scope and object
2 Definitions
3 General requirement
4 General notes on tests
5 Rating
6 Classification
7 Marking
8 Protection against electric shock
9 Change of input voltage setting
10 Output voltage and output current under load
11 No-load output voltage
12 Short-circuit voltage
13 Heating
14 Short-circuit and overload protection
15 Mechanical strength
16 Protection against harmful ingress of water and
moisture
17 Insulation resistance and electric strength
18 Construction
19 Components
20 Internal wiring
21 Supply connection and external flexible cables and
cords
22 Terminals for external conductors
23 Provision for protective earthing
24 Screws and connections
25 Creepage distances, clearances and distances through
insulation
26 Resistance to heat, abnormal heat, fire and tracking
27 Resistance to rusting
Appendix A
Appendix IA Production tests
Appendix IA Examples to be used as guide for sub-clause 8.6
Appendix IC Examples of points of application of test
voltages
Appendix ID Measurement of creepage distances and
clearances
Appendix IE Examples of points of measurement of creepage
distances and clearances
Chapter II: Supplementary requirements for isolating
transformers
Section one - Isolating transformers for general use,
shaver transformers and shaver supply units
2 Definitions
5 Rating
7 Marking
8 Protection against electric shock
11 No-load output voltage
13 Heating
14 Short-circuit and overload protection
15 Mechanical strength
18 Construction
19 Components
21 Supply connection and external flexible cables and
cords
22 Terminals for external conductors
23 Provision for earthing
Appendix II-I-A Requirements for special socket-outlets
for shaver supply units
Chapter III: Supplementary requirements for safety
isolating transformers
Section one - Safety isolating transformers for general
use
5 Rating
7 Marking
8 Protection against electric shock
11 No-load output voltage
21 Supply connection and external flexible cables and
cords
Section two - Transformers for toys
2 Definitions
4 General notes on tests
5 Rating
7 Marking
8 Protection against electric shock
9 Change of input voltage setting
10 Output voltage and output current under load
11 No-load output voltage
12 Short-circuit voltage
14 Short-circuit and overload protection
15 Mechanical strength
18 Construction
19 Components
21 Supply connection and external flexible cables
and cords
Section three - Bell transformers
2 Definitions
4 General notes on tests
5 Rating
6 Classification
7 Marking
8 Protection against electric shock
10 Output voltage and output current under load
11 No-load output voltage
13 Heating
14 Short-circuit and overload protection
15 Mechanical strength
18 Construction
19 Components
21 Supply connection and external flexible cables and
cords
22 Terminals for external conductors
23 Provision for earthing
Appendix II-I-A Requirements for special socket-outlets
for shaver supply units
Chapter III: Supplementary requirements for safety
isolating transformers
Section one - Safety isolating transformers for general
use
5 Rating
7 Marking
8 Protection against electric shock
11 No-load output voltage
21 Supply connection and external flexible cables and
cords
Section two - Transformers for toys
2 Definitions
4 General notes on tests
5 Rating
7 Marking
8 Protection against electric shock
9 Change of input voltage setting
10 Output voltage and output current under load
11 No-load output voltage
12 Short-circuit voltage
14 Short-circuit and overload protection
15 Mechanical strength
18 Construction
19 Components
21 Supply connection and external flexible cables and
cords
Section three - Bell transformers
2 Definitions
4 General notes on tests
5 Rating
6 Classification
7 Marking
8 Protection against electric shock
10 Output voltage and output current under load
11 No-load output voltage
13 Heating
14 Short-circuit and overload protection
15 Mechanical strength
18 Construction
19 Components
21 Supply connection and external flexible cables and
cords
22 Terminals for external conductors
24 Screws and connections
Section four - Transformers for class III handlamps
2 Definitions
5 Rating
7 Marking
8 Protection against electric shock
10 Output voltage and output current under load
11 No-load output voltage
18 Construction
21 Supply connection and external flexible cables and
cords
Figures
Annex ZA (normative) Testing of a series of transformers
Annex ZB (normative) Other international publications
quoted in this standard with the references of the
relevant European publications
Annex ZC (normative) Special national conditions
ALSO NUMBERED AS BS EN 60742 1996 Specifies requirements for stationary or portable, single-phase or polyphase air-cooled isolating and safety isolating transformers.
| Committee |
PEL/96
|
| DevelopmentNote |
Also numbered as BS EN 60742 Supersedes BS 3535-1(1990) which remains current. Supersedes 90/25293 DC (01/2003)
|
| DocumentType |
Standard
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| EN 60742:1995 | Identical |
| IEC 60038:2009 | IEC standard voltages |
| BS 4491-1:1989 | Appliance couplers for household and similar general purposes Specification of general requirements |
| IEC 60884-1:2002+AMD1:2006+AMD2:2013 CSV | Plugs and socket-outlets for household and similar purposes - Part1: General requirements |
| BS EN 60999:1993 | Connecting devices. Safety requirements for screw-type and screwless-type clamping units for electrical copper conductors |
| BS EN 60068-2-32:1993 | Environmental testing. Test methods Test Ed. Free fall |
| BS 6004:2000 | Electric cables. PVC insulated, non-armoured cables for voltages up to and including 450/750 V, for electric power, lighting and internal wiring |
| IEC 60685-2-1:1980 | Connecting devices (junction and/or tapping) for household and similar fixed electrical installations - Part 2: Particular requirements - Screwless terminals for connecting copper conductors without special preparation |
| BS 7211:1998 | Electric cables. Thermosetting insulated, non-armoured cables for voltages up to and including 450/750 V, for electric power, lighting and internal wiring, and having low emission of smoke and corrosive gases when affected by fire |
| BS 6726:1998 | Specification for festoon and temporary lighting cables and cords |
| BS 7671(2001) : 2001 AMD 14905 | REQUIREMENTS FOR ELECTRICAL INSTALLATIONS |
| BS 6899:1991 | Specification for rubber insulation and sheath of electric cables |
| BS EN 60269-2:1995 | Low-voltage fuses Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) |
| IEC 60685-1:1980 | Connecting devices (junction and/or tapping) for household and similar fixed electrical installations - Part 1: General requirements |
| HD 365 : 200S3 | CLASSIFICATION OF DEGREES OF PROTECTION PROVIDED BY ENCLOSURES |
| BS EN 60068-2-2:2007 | Environmental testing Tests. Test B. Dry heat |
| BS EN 60065 : 2014 | AUDIO, VIDEO AND SIMILAR ELECTRONIC APPARATUS - SAFETY REQUIREMENTS (IEC 60065:2014, MODIFIED) |
| BS EN 61058-1 : 2002 | SWITCHES FOR APPLIANCES - PART 1: GENERAL REQUIREMENTS |
| BS EN 60269-3:1995 | BS Low-voltage fuses Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household and similar applications) |
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