high voltage switchgear for mine use

Product type, classification and basic parameters 1.Product model and its meaning 2. Basic parameter Rated voltage: 10kV, 6kV; Rated current:1250A 1000A 800A 630A 500A 400A 315A 200A 150A 100A 50A; Class of protection: IP43; Number of short circuit breaking and closing currents: separate 0.3s Combine and separate 180s Combine and separate 5timesï¼?separate14timesï¼?Combine and separate 11 timesï¼? Rated short-circuit breaking current: 31.5kA (RMS); Rated short-circuit closing current: 80kA (peak); Rated short-time withstand current: 31.5kA (effective value); Rated peak withstand current: 80kA (peak);Rated short circuit duration: 4s; Rated short circuit breaking times:30times Main protection functions: 1)Short circuit protection 2)Overload protection 3)Zero sequence overcurrent protection 4)Zero sequence overvoltage protection 5)Over and under voltage protection In addition, it has the functions of fault memory, fault query, self-test and so on. Technical requirement 1.General requirement 1.1The switchgear shall meet the requirements of this standard and be manufactured according to the drawings and technical documents approved by the designated inspection unit. 1.2In addition to meeting the technical conditions, it should also meet the provisions of GB/T12173-2008 standard. 2.Environmental condition The switchgear shall work normally under the following conditions: a)Altitude: 1000m; b)Ambient temperature: -20 ~40 ; c) Relative humidity: 95%; d) In a gas or steam environment without damaging insulation; 3 .Shell 3.1Material The shell of the switch cabinet is made of 2.5mm thick cold-rolled steel plate. 3.2intensity The material of the switch cabinet shell conforms to the provisions of GB3836.1-2010 Chapter 8, and shall withstand the impact strength impact test of 1kg/7J. 3.3Class of protection The protection capacity of the switch cabinet housing should comply with the provisions of GB3836.3-2010 Article 4.9, and the protection capacity should not be less than IP43.