| 摘要 |
FIELD: methods or devices for use in mines or tunnels, particularly equipment for powered support section lighting at longwall face with the use of low-voltage light sources. ^ SUBSTANCE: device comprises light sources connected to supply control units, which apply low voltage to support section control devices. The light sources are LEDs. Measures to prevent negative lighting influence on support control device operation are also disclosed. ^ EFFECT: increased safety. ^ 9 cl, 5 dwg |
