CSA - CAN/CSA-E384-14-95
Fixed Capacitors for Use in Electronic Equipment Part 14: Sectional Specification: Fixed Capacitors for Electromagnetic Interference Suppression and Connection to the Supply Mains
|Publication Date:||1 April 1995|
This standard applies to fixed capacitors and resistor-capacitor combinations for electromagnetic interference suppression (formerly called radio interference suppression) for use within, or associated with, electronic or electrical apparatus and machines where the capacitors will be connected to a supply mains with a voltage not exceeding 500 V d.c. or 500 V a.c. (r.m.s.) between conductors or 250 V d.c. or 250 V a.c. (r.m.s.) between any one conductor and earth and with a frequency not exceeding 100 Hz.
This standard prescribes tests which are appropriate when the suppression capacitor is to be connected to the supply mains. The relevant equipment specification may also prescribe other circuit positions where capacitors meeting the requirements of this specification shall be used.
Combinations of two or more capacitors within one enclosure are included within the scope of this standard.
Series resistor-capacitor combinations are within the scope of this standard provided that the resistor is in the same enclosure, and the resultant equivalent series resistance of the combination does not exceed 1 kilo ohms.
Parallel resistor-capacitor combinations where the resistor acts as a discharge resistor for the capacitor are within the scope of this standard. Capacitors for special environmental conditions (e.g. drip-proof, splash-proof) may have to comply with additional requirements.
Notes. - For notes on the application of electromagnetic interference suppression capacitors see IEC Publication 940.
The principal object of this standard is to prescribe preferred ratings and characteristics and to select from IEC Publication 384-1 (1982), the appropriate quality assessment procedures, tests and measuring methods and to give general performance requirements for this type of capacitor. Test severities and requirements prescribed in detail specifications referring to this sectional specification shall be of equal or higher performance level, lower performance levels are not permitted.
A further object of this standard is to provide a schedule of safety tests to be used by National Testing Stations in countries where approval by such stations is required.