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About This Item


Full Description

1. Scope and Object



This standard is applicable to stationary or portable, single- phase or polyphase, air-cooled isolating and safety isolating transformers, associated or otherwise, having a rated supply voltage not exceeding 1000 V alternating current and 1000 2 V unsmoothed direct current and rated frequency not exceeding 500 Hz, the rated output not exceeding:

- for isolating transformers:

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

- for safety isolating transformers:

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

The no-load and rated output voltages do not exceed:

- for isolating transformers 1000 V a.c. and 1000 2 V unsmoothed d.c.; - for safety isolating transformers 50 V a.c. r.m.s., and/or 50 2 V unsmoothed d.c., between conductors or between any conductor and earth.

Rated values are indicated in supplementary parts, Chapters II and III, appropriate to each type of transformer.

This standard is applicable to those isolating transformers used when the installation rules call for the separation of circuits for the supply of certain parts of the circuit or of equipment (shavers, portable tools, lawn mowers, etc.).

This standard is applicable to safety isolating transformers used for the supply of circuits for safety extra-low voltage equipment (toys, bells, portable tools, handlamps, etc.)

It is also applicable to transformers associated with specific item s of equipment, to the extent decided upon by the relevant IEC Technical Committees.

This standard is applicable to dry type or encapsulated transform ers. It is not applicable to transformers filled with liquid dielectrics or pulverised materials.

In locations where special environmental conditions prevail, particular requirements may be necessary in accordance with IEC Publication 364-5-51: Electrical Installations of Buildings, Part 5: Selection and Erection of Electrical Equipment. Chapter 51: Common Rules.

This Standard applies to the safety of such equipment designed to be installed and used in accordance with the rules of the Canad ian Electrical Code (CEC), Part I. Note: Manufacturers designing products for use in Canada may find a helpful summary of the equipment-related requirements of the CEC, Part 1, in CSA Publication Spe-2000.



The main object of this standard is to establish safety requ irements for isolating transformers and safety isolating transformers.

Canadian Deviations are included in this Standard. /

1. Domaine d'application et objet


Domaine d'application

La presente norme est applicable aux transformateurs de separation des circuits et transformateurs de securite, associes ou non, a refroidissement par air, fixes ou mobiles, monophases ou polyphases, de tension primaire assignee ne depassant pas 1000 V en courant alternatif et 1000 2 V en courant continu non lisse, de frequence assignee ne depassant pas 500 Hz et de puissance assignee ne depassant pas:

- pour les transformateurs de separation des circuits:

25 kVA en monophase; 40 kVA en polyphase.

- pour les transformateurs de securite:

10 kVA en monophase; 16 kVA en polyphase.

La tension secondaire assignee et la tension secondaire a vide ne depassent pas:

- pour les transformateurs de separation des circuits, 1000 V en courant alternatif et 1000 2 en courant continu non lisse; - pour les transformateurs de securite, 50 V en courant alternatif, valeur efficace, et/ou 50 2 V en courant continu non lisse entre conducteurs ou entre un conducteur quelconque et la terre.

Les valeurs assignees sont indiquees dans les parties supplementaires, chapitres II et III, propres a chaque type de transformateur.

La presente norme est applicable, en ce qui les concerne, aux transformateurs de separation des circuits tels que ceux utilises lorsque les regles d'installation imposent la separation des circuits pour l'alimentation de certaines portions de circuits ou des materiels (rasoirs, outils portatifs, tondeuses a gazon, etc.).

La presente norme est applicable, en ce qui les concerne, aux tran sformateurs de securite tels que ceux utilises pour l'alimentation de circuits ou des materiels a tres basse tension de securite, (jouets, sonneries, outils portatifs, lampes baladeuses, etc.).

Elle est applicable aux transformateurs associes a des parties specifiques d'equipement, dans la limite indiquee par les Comites d'Etudes de la CEI dont relevent ces equipements.

La presente norme est applicable aux transformateurs secs ou enrobes. Elle n'est pas applicable aux transformateurs a remp lissage par dielectrique liquide ou par des matieres pulverulentes.

Des regles speciales peuvent etre exigees pour l'emploi dans des emplacements presentant des conditions particulieres d'environnement definies dans la Publication 364-5-51 de la CEI: Installations electriques des batiments, Cinquieme partie: Choix et mise en oeuvre des materiels electriques. Chapitre 51: Regles communes.

Cette norme s'applique a la securite du materiel destine a etre installe et utilise conformement au Code canadien de l'electricite (CCE), Premiere partie. Note. Les fabricants qui concoivent des produits destines au marche canadien peuvent trouver un resume utile des exigences du CCE, Premiere partie visant ces appareils dans la publication CSA Spe-2000.



L'objet principal de la presente norme est l'etablissement des regles de securite pour les transformateurs de separation des circuits et pour les transformateurs de securite.

Cette norme contient des Exigences propres au Canada.