PN T05000-1991
Telecommunication network in mines. Cable lines. Measuring methods using direct current and intrinsically safe devices

Standard No.

PN T05000-1991

Release Date

1991

Published By

PL-PKN

Latest

PN T05000-1991

PN T05000-1991 history

• 1991 PN T05000-1991 Telecommunication network in mines. Cable lines. Measuring methods using direct current and intrinsically safe devices