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Last modified
2/17/2016 1:15:44 PM
Creation date
2/9/2016 12:36:52 PM
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Planning Files
Planning Files - Planning File #
351
Planning Files - Type
Special Use Permit
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1 <br />34 <br />O � <br />� AUTOMATIC CIF�CUIT RECLOSE�S <br />Our r��w Vacuum Recloser <br />has a lot more goir�g for i# than gooci looks. <br />Electrical World, June 26. 1967 <br />�1 <br />U <br />, <br />;: <br />Take its r��et function for instance9 <br />Check other reclosers and you'll find reset <br />times as high as 300 seconds. <br />Now check the reset-time dial on the new <br />I-T-E Vacuum R�closer you see above. Our <br />maximum reset time is just 30 seconds. And <br />our minimum is just two seconds! <br />There's good reason. When you run into a <br />series of temporary faults (like lightning <br />strokes) you don't want your recloser to <br />pump through to lockour. Ours can't. It <br />senses the fault, opens the circuit, cl�ars the <br />fault, restores service and resets itself. And <br />irr as little as two seconds, iYs right back <br />where it started. <br />Ok, you say, fast reset is great. But what if <br />the fault's a permanent fault and trip time <br />is longer than reset time? Won't the re- <br />closer reset and trip, reset and trip aga;n, <br />and never go to lockout? <br />Glad you asked. In the first place, our reset <br />timing starts each time the circuit's reclosed. <br />And because of a little wrinkle we cal! <br />"reset restraint" it can't reset if the fault's <br />still there at the end of its reset time. <br />The combination of fast reset and reset <br />restraint means intermittent transient faults <br />won't trip this recloser through its se- <br />quence to an unwanted lockout. It also <br />prevents a low value permanent Fault fro*n <br />"pumping" the recloser on its fast trip and <br />makes it unnecessary to coordinate reset <br />time with total program time. <br />Fresh, imaginative engineering like this has <br />made this handsome new I-T-E unit the <br />most exciting thing ihat's happened to re- <br />closers in the last ten years. If you haven't <br />seen it, give your local I-T-E application <br />engineer a call. He has a comprehensive <br />24-minute film strip and will be glad to <br />show it to you at your convenience. I-T-E <br />Circuit Breaker Company, Philadelphia, <br />Pennsylvania, 19130. <br />. . �.ToE ClR�UiT ��EA�C�R C�t1AP�N1( <br />Electrical World, June 26, 1967 <br />35 <br />�� <br />�� <br />��1 <br />
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