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  2. Utilization categories - Wikipedia

    en.wikipedia.org/wiki/Utilization_categories

    Usually utilization category is mentioned in most of the switch gear, with the above contactor stating to be used under AC1 - resistive load & AC3 for motor usage. In electrical engineering utilization categories are defined by IEC standards [1] and indicate the type of electrical load and duty cycle of the loads to ease selection of contactors ...

  3. Contactor - Wikipedia

    en.wikipedia.org/wiki/Contactor

    The current rating of the contactor depends on utilization category. Example IEC categories in standard 60947 are described as: AC-1 - Non-inductive or slightly inductive loads, resistance furnaces; AC-2 - Starting of slip-ring motors: starting, switching-off; AC-3 - Starting of squirrel-cage motors and switching-off only after the motor is up ...

  4. AC3 - Wikipedia

    en.wikipedia.org/wiki/AC3

    AC3 or AC-3 may refer to: Science and technology. Dolby AC-3, ... AC-3, an IEC utilization category; Ambedkar Community Computing Center (AC3) Transportation

  5. NEMA contact ratings - Wikipedia

    en.wikipedia.org/wiki/NEMA_contact_ratings

    NEMA contact ratings are how much current at a rated voltage a relay or other pilot device can switch. The current rating of smaller NEMA contactors or their auxiliaries are defined by NEMA ICS 5: Industrial Control and Systems, Control Circuit and Pilot Devices [1] standard.

  6. 16 Divisions - Wikipedia

    en.wikipedia.org/wiki/16_Divisions

    The 16 Divisions of construction, as defined by the Construction Specifications Institute (CSI)'s MasterFormat, is the most widely used standard for organizing specifications and other written information for commercial and institutional building projects in the U.S. and Canada.

  7. Classified information in the United States - Wikipedia

    en.wikipedia.org/wiki/Classified_information_in...

    Classified information jointly determined by the DOE and the Department of Defense to be related primarily to the military utilization of atomic weapons and removed from the Restricted Data category. FRD-SIGMA-#, # represents the SIGMA number which may be 14, 15, 18, or 20.

  8. AC15 - Wikipedia

    en.wikipedia.org/wiki/AC15

    AC-15, the IEC Utilization categories indicating the type of electrical load; AC-15, one of the first guitar amplifiers designed by Vox; Autovía AC-15, a Spanish highway in the province of A Coruña, Galicia; Honda AC15, a retro style single cylinder motorcycle; USS Brutus, former steamer Peter Jebsen, a collier in the United States Navy

  9. ATRAC - Wikipedia

    en.wikipedia.org/wiki/ATRAC

    ATRAC1 was first used in Sony's own theater format SDDS system in the 1990s, and in this context is a direct competitor to Dolby Digital (AC3) and DTS. SDDS uses ATRAC1 with 8 channel encoding, and with a total encoding rate over all the channels of 1168 kbit/s. Two stacked quadrature mirror filters split the signal into 3 parts: 0 to 5.5125 kHz