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برق و الکترونیک::
کمیسیون الکتروتکنیک بینالمللی
Compliance with this specification does not absolve manufacturers of CompactPCI(r) Express equipment from the requirements of safety and regulatory agencies (UL, CSA, FCC, IEC, etc.).
IEC International Electro-technical Commission IEEE Institute of Electrical and Electronics Engineers
A designation defined in IEC 60950-1 and related documents for circuits with a voltage that remains below 60 V.
� 26 Due to the possible presence of unknown energized circuits on adjacent Carriers or Modules, circuits exceeding the limits of Table 2-8, "Voltage thresholds (working voltages)" might need more insulation to guarantee Module-to-Module or Module-to-Carrier insulation requirements as defined in IEC 60950-1 than they would need with non-energized surrounding circuits.
REQ 2.145 All circuits on Modules exceeding the limits in Table 2-8 shall be inaccessible according to the operator access test defined in IEC 60950-1 with the Module not protected by any enclosure.
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