Basis for Purchase of 320kW Generator

1. The performance and quality of the selected 320kW diesel generator set must meet the requirements of relevant standards

320kW diesel generator is widely used as emergency standby power supply for telecommunications, financial departments, hospitals, schools, commercial departments, industrial and mining enterprises and residential buildings, as well as independent power supply for military and field operations, vehicles and ships and other special purposes.

As 320kW diesel generator set for communication, it must meet the requirements of G3 or G4 specified in GB2820-1997, and meet the 24 performance index requirements specified in the Implementation Rules for Network Access Quality Certification and Testing of Diesel Generator Sets for Communication, and at the same time, it must pass the strict inspection of the communication power supply equipment quality supervision and inspection center established by the competent industry department in China.

As 320kW generator for military communication, it must meet the requirements of relevant GB2820-1997 and GJB standards and the Standard for Quality Inspection of Communication Power Supply Equipment formulated by relevant military departments, and must pass the strict inspection of equipment quality by relevant organizational departments.

1. Appearance requirements

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(1) The boundary dimension, installation dimension and connection dimension of the diesel generator set all conform to the factory drawings approved by the specified procedures

(2) The welding of the unit should be firm, the welds should be uniform, and there should be no defects such as welding penetration, undercut, slag inclusion, and air holes. The welding slag and flux should be cleaned; The paint film should be uniform, without obvious cracks or detachment; The coating should be smooth and free from missed spots, rust, and other phenomena; The fasteners of the unit should not be loose.

(3) The electrical installation of the diesel generator shall comply with the circuit diagram, and the connection of each conductor of the unit shall have obvious signs that are not easy to fall off.

(4) Diesel generator shall be equipped with well grounded terminals.

(5) The label of diesel generator is complete

2. Insulation resistance and insulation strength

(1) Insulation resistance: The insulation resistance of each independent electrical circuit to ground and between circuits should be greater than 2M.

(2) Insulation strength: Each independent electrical circuit of the unit should be able to withstand an AC test voltage of 1 minute to the ground and between circuits, and there should be no breakdown or flashing phenomenon.

Circuit voltage test voltage: <100V 750V, ≥100V 1440V

2. Main factors to be considered in the selection of 320kW diesel generator set

The main factors that should be considered in the selection of diesel generating set include mechanical and electrical performance, the purpose of the unit, the capacity and range of load changes, and automation functions.

(1) The purpose of 320kW generator. The diesel generator set can be used for common, standby and emergency conditions. Therefore, the requirements of diesel generator set for different purposes are different.

(2) Load capacity. The load capacity and load variation range shall be selected according to different purposes, and the single unit capacity and standby diesel generator set capacity shall be determined.

(3) Environmental conditions for the use of 320kW generator set (mainly referring to altitude and climatic conditions)

(4) Selection of diesel generator

(5) Selection of generators and excitation methods

(6) Selection of automation function of diesel generator