(1) advantages ①can do a lot of power, the maximum can reach thousands or even tens of thousands of kilowatts. This is because, at the same output power, the high-voltage motor current can be much smaller than the low-voltage motor (basically inversely proportional to the voltage), for example 500kW, the rated current of a 4-pole motor, about 900A when the rated voltage is 380V, The rated voltage of 10kV only about 30A. Therefore, high-voltage motor windings available smaller diameter. As a result, stator copper losses in high-voltage motors are also lower than in low-voltage motors. For higher power motors, the use of low-voltage, due to the need for thicker wires and the need for a large area of ​​stator slots, the stator core diameter is very large, the entire volume of the motor will be great. ② For larger capacity motors, high-voltage motors used in power supply and distribution equipment than the low-voltage motor overall investment less, and the line loss is small, can save some power consumption. Especially the 10kV high-voltage motor can directly use the network power (China's high-voltage power supply to the user are generally 10kV), so that the power equipment (mainly transformers) will be less investment, the use is relatively simple, the failure rate Will be less. (2) Disadvantages The cost of the windings is relatively high (mainly caused by the insulation) and the associated insulation material costs are also higher. ② insulation process more difficult, more time and labor costs. The requirements of the use of the environment than the low-voltage motor to be strictly a lot.
CNC Milling Machine is divided into without a knife knife library and library two categories.Among them with the sword library is also called Machining Center .So Machine center is also called CNC milling machine .
After more than 50 years of development, the DAHE become domestic manufacturing machining center, the earliest batch of the largest manufacturers, is China's first batch to developed countries export machining center of enterprises.Since 1986, the dahe brand TH and V series of Vertical Machining Center export to America, Europe and other countries.Key parts of Machining center and factory precision are from the German LEITZ three coordinate measuring machine and rennie salt RENISHAW double-frequency laser interferometer strict testing.Each machining center through strict static and dynamic accuracy and reliability of the test.Static geometric accuracy contains each assembly process in strict test, reliability test of 48 disappear.Company production of vertical machining center and Horizontal Machining Center, vertical machining center is divided into machine and hard rail line rail.1. Line rail vertical machining center, high efficiency, high speed and high precision processing, can choose different specifications according to the machining parts of double spindle machining center, big torque, heavy cutting, the output torque of 500 nm.2, hard rail vertical machining center, high bearing, high rigidity, high accuracy keep hard rails series machines, base and water dish cooked into an organic whole, and sheet metal junction design of water retaining the steps, to eliminate water seepage and leakage.Even screw nut, drive good rigidity, transmission parts joint seamless design, cancel the traditional gasket design and improving connection rigidity, ensure the accuracy of stability.Design of large span herringbone column column rigidity is strong.Optional full gear main shaft transmission.
Machining Center NingXia DaHe Machine Tool (Group) Imp And Exp Co.,Ltd , https://www.nxdhjcmachine.com