| 摘要 |
A device for spark protection of networks of objects concerning human life-sustaining activity comprises a differential current transformer, to secondary winding of which OR element is connected, which is connected to a shutdown system. The three other current transformers comprises a magnetic core and connected to it via a primary amplifier, a high-voltage filter, a secondary amplifier, detection and selection device, an auto-selection unit of high-voltage signals and OR elements and the shutdown system. The device is also provided with a limiting resistor and a button “Test-1” in series connected to the said resistor, as well as to high-voltage signal generation unit with “Test-2” button. Between a detector-selector device and a high-voltage autoselection unit an indication unit with a two-color light diode is connected. |
