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sgz-h-k3 nuclear pole (safety grade) low voltage pull-out switchgear set
sgz-h-k3 nuclear pole (safety grade) low voltage pull-out switchgear set
sgz-h-k3 nuclear pole (safety grade) low-voltage pull-out switchgear assembly is a new type of low-voltage switchgear assembly developed according to the design specifications and operation experience of the electrical equipment of nuclear power plants at home and abroad. it is suitable for the 380vac low-voltage distribution system of nuclear power plants and is used for the power distribution of safety grade electrical or instrument control equipment. the equipment adopts modular design, with flexible electrical scheme combination, easy installation and maintenance.
according to the relevant standards of safety-grade electrical equipment for nuclear power plants and the technical requirements of low-voltage electrical equipment for nuclear island of cpr1000 pressurized water reactor nuclear power plants, the equipment has passed the type tests of benchmark electrical performance, seismic resistance and internal fault arc.
the equipment is assembled by splicing and partial welding. metal plates are used to separate each compartment of the equipment (including bus room, cable room, small bus room and functional device room). drawer units have clear "connect", "test", "disconnect" positions and locking devices to ensure the safety of equipment operation and maintenance personnel.
the main standards and specifications that the product meets
gb 7251.1-2005 "low-voltage switchgear and control equipment - part 1: type test and some type test equipment"
gb/t 13625-1992 "seismic evaluation of electrical equipment for nuclear power plant safety system"
gb/t 122727-2002 "nuclear power plant safety system electrical equipment quality assessment"
rcc-e 2005 rules for the design and construction of electrical equipment for nuclear islands in pressurized water reactor nuclear power plants
standard for qualifying class 1e equipment for nuclear power generating stations
ieee 344-2004 recommended practice for seismic qualification of class 1e equipment for nuclear power generating stations
environmental conditions of product use
altitude: less than 2000m
ambient temperature: 5℃ ~ 40℃; average daily temperature ≤35℃;
relative humidity: the relative humidity can reach 100%.
1. the company has obtained the "civil nuclear safety equipment design license" and "civil nuclear safety equipment manufacturing license" issued by the national nuclear safety administration, and is the only enterprise in central and southern china that has obtained this certificate. the license covers class 1e ac low-voltage switchgear.
2. the company undertakes and implements "guangdong province major strategic industry development special project - nuclear power plant safety-grade low-voltage switchgear assembly development project", and has made a number of major technological breakthroughs in the reliability and safety of low-voltage cabinet products. nuclear safety-grade products have passed a full set of type tests in accordance with the technical standards of nuclear power industry in november 2011, and passed scientific and technological achievements appraisal:
electrical performance test, seismic performance test;
internal fault arc test (35ka/0.3s);
the products have passed the identification of scientific and technological achievements of guangdong province, and won the provincial science and technology achievement award, the first prize of science and technology of shantou city.
3. the product has obtained 8 patents for invention, utility model and so on, which is "high-tech products of guangdong province".
product main technical parameters
serial number | project | technical parameter | |
1 | rated voltage | 380 v | |
2 | rated insulation voltage | 660 v | |
3 | rated frequency | 50 hz | |
4 | rated current | rated current of horizontal bus | 2000 a |
rated current of vertical bus | 1000 a | ||
5 | rated short-time withstand current | 35 ka/1s | |
6 | rated peak tolerable current | 73.5 ka | |
7 | housing protection class | ip31 or above | |
8 | mechanical collision protection class | ik07 | |
9 | internal arc | current | 35ka |
duration | 0.3s | ||
10 | seismic resistance | response spectrum | nuclear island electric building7.00mm |
frequency | 5timeobe/1 time sse | ||
duration | 30s | ||
damping ratio | 5% | ||
11 | overall dimensions (width x depth x height) | 600mmx1000mmx2200mm | |
