2017 wholesale price FTMS (SDK) Low Voltage Withdrawable Switchgear Wholesale to Ukraine

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USE:

FTMS (SDK) low-voltage withdrawable switchgear device is the latest patented technology products in our company, suitable for the power supply system with three-phase AC 50-60HZ, rated working voltage(0- 660V) for the use of power generating, transmitting, distributing, power conversing and power consumption equipment control.

This device complies with IEC439 and GB7251-97JB / T9661-99 professional standards and passed 3C certificate:

FTMS (SDK) Low Voltage Withdrawable Switchgear2






This device is called an isolator. It’s a mechanical disconnect that opens and closes a 500,000 volt electrical transmission line at the El Dorado electrical substation near Boulder City, Nevada. Another device called a switcher is supposed to open the circuit first, then the isolator opens to physically disconnect the circuit. The switcher has had a history of one of the three phases failing to open. When this happens, the isolator opens with one phase still energized. Since the isolator isn’t designed to open hot, there’s no arc suppression, and the result is quite spectacular. Because of the history of periodic failures when the switcher has been opened, a video camera had been set up to try and record the event should it happen again. They were in luck and caught it. The arc ends when an upstream circuit breaker is opened. Full credit goes to Neil Brady who captured this amazing sight. The “wow” at the end of the video says it all.

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