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  2. Utilization categories - Wikipedia

    en.wikipedia.org/wiki/Utilization_categories

    The utilization categories category for low-voltage switchgear defines the characteristic operating conditions for switchgear such as contactors, circuit-breakers, circuit-breaker-fuse units, contactor relays, etc.

  3. ABB - Wikipedia

    en.wikipedia.org/wiki/ABB

    ABB Group is a Swedish-Swiss [6] [7] [8] multinational electrical engineering corporation. Incorporated in Switzerland as ABB Ltd., and headquartered in Zurich, [1] it is dual-listed on the SIX Swiss Exchange in Zurich and the Nasdaq Nordic exchange in Stockholm, Sweden. [9]

  4. Ring main unit - Wikipedia

    en.wikipedia.org/wiki/Ring_main_unit

    In an electrical power distribution system, a ring main unit (RMU) is a factory assembled, metal enclosed set of switchgear used at the load connection points of a ring-type distribution network. It includes in one unit two switches that can connect the load to either or both main conductors, and a fusible switch or circuit breaker and switch ...

  5. Switchgear - Wikipedia

    en.wikipedia.org/wiki/Switchgear

    High-voltage switchgear was invented at the end of the 19th century for operating motors and other electric machines. [1] The technology has been improved over time and can now be used with voltages up to 1,100 kV. [2] Typically, switchgear in substations is located on both the high- and low-voltage sides of large power transformers. The ...

  6. High-voltage switchgear - Wikipedia

    en.wikipedia.org/wiki/High-voltage_switchgear

    750 kV high-voltage switchgear. High-voltage switchgear is any switchgear used to connect or disconnect a part of a high-voltage power system.This equipment is essential for the protection and safe operation, without interruption, of a high voltage power system, and is important because it is directly linked to the quality of the electricity supply.

  7. Informant Questionnaire on Cognitive Decline in the Elderly

    en.wikipedia.org/wiki/Informant_Questionnaire_on...

    In community samples, cutoff scores for likely dementia have ranged from 3.3 and above to 3.6 and above, while in patient samples the cutoff scores have ranged from 3.4 and above to 4.0 and above. [3] To improve the detection of dementia, the IQCODE can be used in combination with the Mini-Mental State Examination.

  8. Motor control center - Wikipedia

    en.wikipedia.org/wiki/Motor_control_center

    Motor control centers are usually used for low voltage three-phase alternating current motors from 208 V to 600 V. Medium-voltage motor control centers are made for large motors running at 2300 V to around 15000 V, using vacuum contactors for switching and with separate compartments for power switching and control.

  9. Vascular dementia - Wikipedia

    en.wikipedia.org/wiki/Vascular_dementia

    Vascular dementia is the second-most-common form of dementia after Alzheimer's disease in older adults. [4] The prevalence of the illness is 1.5% in Western countries and approximately 2.2% in Japan. It accounts for 50% of all dementias in Japan, 20% to 40% in Europe and 15% in Latin America. 25% of people with stroke develop new-onset dementia ...