英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
014572查看　014572　在百度字典中的解释百度英翻中〔查看〕
014572查看　014572　在Google字典中的解释Google英翻中〔查看〕
014572查看　014572　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Variable-frequency drive - Wikipedia
    Most VFDs allow auto-starting, which will drive the output to a designated frequency after a power cycle, after a fault has been cleared, or after the emergency stop signal has been restored (generally emergency stops are active low logic) One popular way to control a VFD is to enable auto-start and place L1, L2, and L3 into a contactor
  • What is a Variable Frequency Drive (VFD)? - Control. com
    In short, a variable frequency drive, or VFD, is a device that adjusts the frequency of the incoming AC current to a 3-phase motor while maintaining the output voltage from the VFD at a stead DC level, ensuring that the motor can respond to adjustments in the desired operating RPM But how does a VFD actually work? Where are VFDs used?
  • What is a VFD? Learn how Variable Frequency Drives work
    Choosing the right VFD is crucial to ensure efficient motor performance, energy savings, and system longevity Here are key factors to consider when making your choice: Ensure that the frequency inverter matches the motor’s power rating (HP kW), voltage, and current requirements
  • What are Variable Frequency Drives | Guide to VFDs | IEC
    First invented in the 1980s, a VFD is a type of electric motor controller that enables users to adjust motor speed by varying the supplied frequency and voltage Based on your specific application, the type of VFD you need might change The most common drive types include:
  • WHITE PAPER UNDERSTANDING VARIABLE FREQUENCY DRIVES - HubSpot
    A variable frequency drive is an electronic control circuit used to control an electric motor A VFD produces controlled pulses of voltage and current in a specific manner that controls the torque and speed of the motor The controller is microprocessor-based, and can use real-time feedback from the actual motor
  • What is a variable frequency drive? - Danfoss
    A variable frequency drive (VFD), also known as AC variable speed drive, AC variable frequency drive, VFD inverter or variable voltage variable frequency drive, is a type of motor controller that drives an electric motor by varying the frequency and voltage of its power supply
  • What is a Variable Frequency Drive? - VFDs. com
    A Variable Frequency Drive (VFD) is a type of motor controller that drives an electric motor by varying the frequency and voltage supplied to the electric motor Other names for a VFD are variable speed drive, adjustable speed drive, adjustable frequency drive, AC drive, microdrive, and inverter
  • How Variable Frequency Drives Work | MISUMI USA
    In summary, VFDs are a must-have for any situation requiring precise control over an AC device Be sure to check out Mitsubishi Electric VFD products, available through MISUMI





中文字典-英文字典  2005-2009