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
exercice查看　exercice　在百度字典中的解释百度英翻中〔查看〕
exercice查看　exercice　在Google字典中的解释Google英翻中〔查看〕
exercice查看　exercice　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:


  • 24V DC wire colors | Automation Control Engineering Forum
    If you ground your 0VDC connections, I strongly urge the white with blue stripe for 0V If you float it, I would consider blue for 0V and brown for +24V I've seen that done and it worked well Check section 13 2 of NFPA 79 as well There are more details there
  • White color for Positive DC wiring? - Electrician Talk
    That being said, red was usually paired with black, and white with green, and it was 24VDC Yes, I agree with you, my question is: is this a common practice or has something to do with that CEC rule 4-038? Check to see if your client has a spec that might help clarify
  • 24 vdc color code | Information by Electrical Professionals for . . .
    Per NFPA79 and UL508A, the suggested (but not required) color code for 24VDC grounded conductors is white with a blue stripe nappuc, I do not design 24 VDC control for PLC, but tons of design for 24 and 48 VDC power used in telephone offices
  • 4 wire color code for dc voltage | PLCS. net - Interactive Q A
    Does anyone know the color code for a 4 wire dc device I'm pretty sure brown is for +24vdc, blue for 0vdc As far as black and white i'm not sure
  • Standards for control wiring colors? : r PLC - Reddit
    Blue Blue White for 24VDC and 0VDC, green or green yellow for ground AC is a little more complicated - depending on line voltage and if you transform to lower voltages Red, black
  • Running 24 volt DC data cables, help please
    We are running some equipment that needs a data cable to send data to a small lcd screen but we also need to power these small screens with 24 volts DC We are running Cat 6 cables for the data side basically we have narrowed it down to either using a: 2 core 1 5mm shielded cable to run the 24v DC power or:
  • 24v Dc Wire Colors - Wiring Draw And Schematic
    Wiring a 24v DC electrical system correctly is key to ensuring a safe and efficient circuit Knowing the different 24v DC wire colors and what each color signifies will help you identify connections and troubleshoot problems quickly 24v DC wiring typically consists of two wires, one black and one red
  • 24v Dc Wire Colors » Wiring Diagram
    The white wire is typically used for the neutral line and acts as a return path for electricity Understanding the proper use of 24v DC wire colors is important not just for safety, but for ensuring that your wiring job is up to code
  • Wire (24 VDC) | PLCS. net - Interactive Q A
    The neutral and 0V cables from outside go direct to the neutral bus bar without going through terminals For AC phase cables black color, for + 24VDC dark blue
  • Blue for 24VDC? | Information by Electrical Professionals for . . .
    We use wire with blue insulation for +24Vdc and blue with a white tracer for -24Vdc This is a slight deviation from NFPA 79 14 2 which we follow but helps in wiring the machine correctly





中文字典-英文字典  2005-2009