Specifies general requirements for the design, construction and marking of electrical protection devices for coal and shale mines. It includes requirements for elements that detect the faulty condition, equipment for initiating tripping or locking-out of circuit-breaking devices, and equipment for limitation of earth-fault currents.
Product Information
Published:
12/31/1987
Pages:
7
File Size:
1 file , 59 KB
Language:
English
Note:
This product is unavailable in Ukraine, Russia, Belarus