Transformateurs d'isolement série pour l'éclairage des installations aéroportuaires
Porté:
1.1
This Standard applies to encapsulated isolating transformers for use as a circuit continuity device,
intended to be installed in airport field lighting series circuits for use in nonhazardous locations in
accordance with the Canadian Electrical Code, Part I.
1.2
This Standard applies to transformers that consist of primary and secondary coils that are wound upon a
core, the assembly being enclosed in a waterproof case. The primary coil is connected into the series
circuit and the secondary coil to the light fixture lead by means of plug/receptacle connectors. The
receptacle portion of the connector is provided with the transformer to mate with the plug portion on
the series circuit and light fixture cables. The transformer receptacle portion may be either built into the
transformer body or moulded into the ends of transformer leads.
1.3
Transformers constructed to meet the requirements of this Standard are suitable for continuous outdoor
service in ambient temperatures from a minimum of –55 °C to a maximum of +65 °C and for direct earth
burial.
1.4
In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to
satisfy in order to comply with the standard; “should” is used to express a recommendation or that
which is advised but not required; and “may” is used to express an option or that which is permissible
within the limits of the standard.
Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a
note accompanying a clause is to separate from the text explanatory or informative material.
Notes to tables and figures are considered part of the table or figure and may be written as
requirements.
Annexes are designated normative (mandatory) or informative (non-mandatory) to define their
application.
Raison d’être du projet
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Les OEN sont eux-mêmes responsables du contenu et de l’exactitude de l’information présentée ici. Cette information n’existe que dans la langue dans laquelle elle a été fournie au CCN.