1、 Overview GCK1 series low voltage draw out switchgear (hereinafter referred to as "switchgear") is suitable for power receiving, power feeding, reactive power compensation, electric energy measurement, lighting and centralized motor control in power plants, substations, industrial and mining enterprises and high-rise buildings with rated working voltage of 380V, frequency of 50Hz and rated current of 4000A. II Reference standard ies439-1 low voltage switchgear and control equipment gb156-80 rated voltage gb10609.1-89 technical drawing title block gb2681-81 conductor color in electrical equipment gb2900.18-82 electrical terminology gb762-80 rated current of electrical equipment gb4025-83 color of indicator light and button in electrical equipment gb4026-83 identification of electrical wiring terminals General rules for wiring terminals marked with alphanumeric symbols gb3047.1-82 basic dimension series of panel, frame and frame gb4205-83 operation standard movement direction of control electrical equipment gb4942.2-85 protection grade of low voltage electrical enclosure gb7251-87 low voltage switchgear gb9466-88 Basic test methods of low voltage switchgear zbk36001-89 low voltage withdrawable switchgear
4、 The cabinet frame of the overall structure device is an assembled structure, and the frame and parts are connected without screws. The frame and shell shall have sufficient strength and stiffness, and shall be able to bear the mechanical stress and electric force caused by the installation of components and short circuit. At the same time, the safety of the device shall not be affected by the hoisting and transportation of the device. The protection grade of the device shell is 1p30 and 1p40.