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SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR - PART 2-2: PARTICULAR REQUIREMENTS FOR CONTROL TRANSFORMERS (IEC 61558-2-2:1997, IDT)
MS IEC 61558-2-2:2005
Status : Original
Format : PDF

This Malaysian Standard applies to stationary or portable, single-phase or poly-phases, aircooled control transformers associated or otherwise having a rated supply voltage not exceeding 1 000 V a.c. ....Read more or 1 415 V ripple free d.c. and rated frequency not exceeding 500 Hz and no limitation of the rated output.

This standard is applicable to transformers used between circuits where double or reinforced
insulation is not required by the installation rules or by the equipment specification.
This standard is applicable to dry type transformers. The windings may be encapsulated or
non-encapsulated.

NOTE 1 – Normally, these transformers are intended to be associated with equipment to provide voltages different from the supply voltage for the functional requirement of the equipment. The safety insulation may be provided (or completed) by other features of the equipment, such as the body. Parts of output circuits may be connected to the input circuit or to protective earth.

NOTE 2 – For t Close

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SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR - PART 2-15: PARTICULAR REQUIREMENTS FOR ISOLATING TRANSFORMERS FOR THE SUPPLY OF MEDICAL LOCATIONS (IEC 61558-2-15:1999, IDT)
MS IEC 61558-2-15:2007
Status : Original
Format : PDF

This Malaysian Standard deals with all aspects of safety such as electrical, thermal and mechanical. 
This standard applies to stationary, single-phase or polyphase, air-cooled (natural or forc ....Read more ed) isolating transformers for the supply of group II medical locations, designed to be permanently connected to the fixed wiring of IT supply system, having a rated supply voltage not exceeding 1 000 V a.c. and rated frequency not exceeding 500 Hz. The rated output shall not be less than 3 kVA and shall not exceed 10 kVA.

NOTE 1 – Details of IT supply systems are to be found in IEC 60364-3.
NOTE 2 – The wiring rules for group II medical locations are under consideration [1]* .

The no-load output voltage and the rated output voltage shall not exceed 250 V a.c. singlephase
or polyphase (phase-to-phase voltage). Isolating transformers are used where double or reinforced insulation between circuits is required by the installation rules or by the appliance specification.
This standard is appli Close

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SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR - PART 2-7: PARTICULAR REQUIREMENTS FOR TRANSFORMERS FOR TOYS (IEC 61558-2-7:1997, IDT)
MS IEC 61558-2-7:2007
Status : Original
Format : PDF

This Malaysian Standard applies to transformers for toys having a rated supply voltage not exceeding 250 V a.c., a rated frequency of 50/60 Hz, a rated output voltage not exceeding 24 V a.c. or 33 V r ....Read more ipple-free d.c. and a rated output not exceeding 200 VA and a rated output current not exceeding 10 A. This standard does not in general take into account playing with the transformer by children. Close

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SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR DEVICES - PART 2-13: PARTICULAR REQUIREMENTS FOR AUTO-TRANSFORMERS FOR GENERAL USE (IEC 61558-2-13:1999, IDT)
MS IEC 61558-2-13:2007
Status : Original
Format : PDF

This Malaysian Standard deals with all aspects of safety such as electrical, thermal and mechanical. 
This standard applies to stationary or portable, single-phase or polyphase, aircooled (natu ....Read more ral or forced), independent or associated auto-transformers, having a rated supply voltage not exceeding 1 000 V a.c., a rated frequency not exceeding 500 Hz. The core power does not exceed:
– 1 kVA for single-phase auto-transformers;
– 5 kVA for polyphase auto-transformers.

The rated output does not exceed:
– 20 kVA for single-phase auto-transformers;
– 100 kVA for polyphase auto-transformers.

This standard is also applicable to auto-transformers having a core power up to 40 kVA, however such transformers are considered as special transformers and are subjected to an agreement between the purchaser and the supplier. Such special auto-transformers have no limitation for the rated output. The no-load output voltage and the rated output voltage do not exceed 1 000 V a.c.
or 1 415 V ripple- Close

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SAFETY OF SMALL POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR - PART 2-8: PARTICULAR REQUIREMENTS FOR BELL AND CHIME TRANSFORMERS (IEC 61558-2-8:1998, IDT)
MS IEC 61558-2-8:2007
Status : Original
Format : PDF

This Malaysian Standard deals with all aspects of safety such as electrical, thermal and mechanical. 
This standard applies to fixed, single-phase, air-cooled (natural or forced), indépendant ....Read more or associated safety isolating transformers for bell and chimes, having a rated supply voltage not exceeding 250 V a.c., a rated frequency not exceeding 500 Hz, a rated output not exceeding 100 VA. The no-load output voltage shall not exceed 33 V a.c. or 46 V ripple free d.c. and the rated
output voltage shall not exceed 24 V a.c. or 33 V ripple free d.c.

Bell and chime transformers are generally intended to supply domestic sound signalling equipment and other similar devices where the load is applied for short periods of time.

NOTE 1 – A partial load may be applied for illumination purposes.

This standard applies to special safety isolating transformers (transformer for bell and chime) which are used where double or reinforced insulation between circuits is required by the installation rul Close

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SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR - PART 2-1: PARTICULAR REQUIREMENTS FOR SEPARATING TRANSFORMERS FOR GENERAL USE (IEC 61558-2-1:1997, IDT)
MS IEC 61558-2-1:2005
Status : Original
Format : PDF

This Malaysian Standard applies to stationary or portable, single-phase or polyphase, aircooled separating transformers, associated or not, having a rated supply voltage not exceeding 1000 V a.c., a ....Read more rated frequency not exceeding 500 Hz, and a rated output not exceeding:
– 1 kVA for single-phase transformers;
– 5 kVA for polyphase transformers.

This Malaysian Standard is also applicable to separating transformers having a rating up to 40 kVA, however such transformers are considered as special transformers and are subjected to an agreement between the purchaser and the supplier. The no-load output voltage or the rated output voltage shall not exceed 1000 V a.c. or 1415 V ripple-free d.c.

This standard applies to transformers where double or reinforced insulation between circuits is not required by the installation rules or by the appliance specification.

NOTE:
1.Normally, the transformers are intended to be associated with equipment to provide voltages different from the supply Close

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SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR - PART 1: GENERAL REQUIREMENTS AND TESTS (IEC 61558-1:1998, IDT)
MS IEC 61558-1:2005
Status : Original
Format : PDF

This Malaysian Standard provides general specifications for all aspects of safety (such as electrical, thermal and mechanical) of: a) Stationary or portable, single-phase or polyphase, air-cooled (nat ....Read more ural or forced) isolating and safety isolating transformers; and b) Stationary or portable, single-phase or polyphase, air-cooled (natural or forced) separating transformers, auto-transformers, variable transformers and small reactors. Close

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SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR - PART 2-6: PARTICULAR REQUIREMENTS FOR SAFETY ISOLATING TRANSFORMERS FOR GENERAL USE (IEC 61558-2-6:1997, IDT)
MS IEC 61558-2-6:2005
Status : Original
Format : PDF

This Malaysian Standard applies to stationary or portable, single-phase or polyphase, air-cooled safety isolating transformers, associated or otherwise, having a rated supply voltage not exceeding 100 ....Read more 0 V a.c. and rated frequency not exceeding 500 Hz, the rated output not exceeding: 

- 10 kVA for single-phase transformers;
- 16 kVA for polyphase transformers. Close

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SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR - PART 2-5: PARTICULAR REQUIREMENTS FOR SHAVER TRANSFORMERS AND SHAVER SUPPLY UNITS
MS IEC 61558-2-5:2005
Status : Original
Format : PDF

This Malaysian Standard applies to shaver supply units, embodying one or more socket-outlets and a single phase air cooled isolating transformer, having a rated supply voltage not exceeding 250 V a.c. ....Read more , a rated output not less than 20 VA and not exceeding 50 VA, a rated output voltage not exceeding 250 V, and a rated frequency not exceeding 500 Hz.

This Malaysian Standard is also applicable to shaver transformers for embodiment into shaver supply
units.

NOTE 1 – Shaver supply units may be flush or surface mounted or incorporated in luminaires and other
equipment.

NOTE 2 – Shaver supply units may be used to supply shavers, tooth brushes and similar small power devices.  Close

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SAFETY OF POWER TRANSFORMERS, POWER SUPPLY UNITS AND SIMILAR - PART 2-4: PARTICULAR REQUIREMENTS FOR ISOLATING TRANSFORMERS FOR GENERAL USE (IEC 61558-2-4:1997, IDT)
MS IEC 61558-2-4:2005
Status : Original
Format : PDF

This Malaysian Standard applies to stationary or portable, single-phase or polyphase, air-cooled isolating transformers, associated or otherwise, having a rated supply voltage not exceeding 1000 V a ....Read more .c. and rated frequency not exceeding 500 Hz, the rated output not exceeding:

– 25 kVA for single-phase transformers;
– 40 kVA for polyphase transformers.

This standard is also applicable to isolating transformers without limitation of the rated output, however such transformers are considered as special transformers and are subjected to an agreement between the purchaser and the supplier. The no-load output voltage or the rated output voltage does not exceed 500 V a.c. or 708 V ripple-free d.c.

NOTES

1. The no-load output voltage or the rated output voltage may be up to 1000 V a.c. or 1 415 V ripple-free d.c. to be in accordance with the national wiring rules or for a special purpose.
2. This standard is applicable to those isolating transformers used when the installation rules ca Close

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