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
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中间继电器主要技术要求

2013/12/31 14:16:52点击:

中间继电器主要技术要求

⒈中间继电器动作电压不大于额定电压的70%。
⒉中间继电器返回电压不小于额定电压的5%。
⒊中间继电器的动作时间不大于60ms。
⒋中间继电器功率消耗在额定电压下不大于4W。
⒌中间继电器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℃。
⒍中间继电器介质强度
中间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。
⒎中间继电器触点断开容量:在直流有感(τ=5ms)回路,U≤250V, I≤2A,为20W;在交流(cosφ=0.4)回路,U≤250V,I≤2A,为80VA。
⒏中间继电器继电器电寿命为5×10次。继电器机械寿命为10次。
⒐中间继电器重量约为0.8kg。[3]