Mike Krzyzewski is really a famous coach of Dream Team. She has coached north america men's basketball team for some time, that's clinched numerous medals for his country. Following Londonfl jerseys supplyn Olympic was over, Krzyzewski told The Associated Press that this game will be his final one as national coach, a job he's held for seven years. He had left open the possibility of swomen nfl jerseystaying with the team beyond the London Games, when practice on Saturday said these will be his last Olympics.When asked if he was sure, Krzyzewski didn't hesitate before again saying, "yecheap nfl jerseys wholesales," this will be his last game "If we could win it, then it might be three major championships in a row, i always do not know when that has been done because we haven't usually won http://govoriotkrito.bg/libs/nflcn08.htmthe globe championships," Krzyzewski said. "It becomes an enormous thing for the program." Whatever, he's an awesome coach. His achievement are going to be remembered by the country.cheap nfl jerseys

DZ-700电磁式中间继电器

更新:2013-9-9 14:43:29      点击:
  • 产品品牌   
  • 产品型号   DZ-700
  • 产品描述

    DZ-700电磁式中间继电器,是上海人民电气有限公司 http://www.shamandq.com 为您提供的关于DZ-700电磁式中间继电器型号,DZ-700电磁式中间继电器价格,有关DZ-700...

产品介绍

1   用途
     DZ–700电磁式中间继电器(以下简称继电器)作为一种辅助继电器用于直流操作的各种保护和自动控制装置中,以增加触点的数量及容量。

2 结构与工作原理
      继电器采用JK-4壳体,其外形尺寸、背后端子及安装开孔图见附录2。背后端子接线图见图1。继电器是在DM1电码继电器的基础上,增加底座和外壳而成。当在继电器线圈上加电压,且等于或大于动作电压时,衔铁就被电磁吸力吸靠在铁心上,而接触片在衔铁顶板的推动下,触点接通、断开或转换被控制电路,当继电器线圈被断电或电压降低到小于返回电压时,衔铁在接触片的作用下返回到原来位置。           

主要技术要求
     1.继电器的额定电压及线圈电阻值见表1

 

1

额定电压

220V

110V

48V

24V

12V

线圈电阻

12100Ω

4000Ω

650Ω

280Ω

72Ω

 

 2.  技术数据

 

技术数据

额定电压

220V 110V 48V 24V 12V

线圈电阻

17000Ω 4000Ω 650Ω 280Ω 72Ω

触点代号

8000,4011,2022,0004,3030,1400,0420,5300,3320,1420,6400,6300

动作电压

≤70%Un

返回电压

≥5%Un

功耗

Un下≤4

触点容量

直流有感负荷电路断开20W交流电路断开80VA

 

 3.热性能
 当环境温度为40℃时,继电器线圈长期耐受110%额定电压值,温升不超过65℃
        4.介质强度
       继电器各导电电路连在一起与外露的非带电金属部分及外壳之间、线圈电路与触点电路之间,应能承受1kV(有效值)、50Hz的交流试验电压,历时1min,而无绝缘击穿或闪络现象。
       5.触点断开容量
       在直流有感(τ=5ms)回路,U≤250V
       I≤2A,为20W;在交流(cosφ=0.4)回路,U≤250VI≤2A,为80VA
       6.继电器电寿命为5×103次。
       继电器机械寿命为104
      7.重量约为0.8kg

5.订货须知
订货时应指明:
a.     继电器的名称和型号;
b.     安装方式:凸出式后接线或凸出式前接线;
c.    额定电压值;
d.    订货数量;
e.    交货地址。

更多产品