Driving-locking system for housing cover - particularly for an explosion-proof cover
PL338906A1
Current leakage protection electronic relay in particular for power supply networks of coal processing plants
PL338343A1
Electrical circuit arrangement of a multiple-function programmable starter in particular that for motors of mining machines
PL332513A1
Circuit arrangement for standardising output signals in three-phase air transreactors, in particular for mining equipment
PL325210A1
Three-phase lead-in insulator nwith a built-in transreactor in particular for mining equipment
PL323762A1
Set of cable passages in particular for explosion-proof electric equipment
PL321410A1
Static overcurrent relay arrangement for protection of three-phase loads against cosequences of short circuits, phase dissymmetry, and overloads
PL316225A1
Microprocessor operated pressure control and adjustment system for maintaining constant pressure or pressure difference within a selected area of hydraulic network
PL313189A1
Mining starter especially that with single contactor
PL313185A1
Normally open interlocking protection for disconnector switch actuators, especially for manoeuvring starters used in mines
PL313126A1
Isolating disconnector switch and auxilary circuit-breaker with mechanical locking especially for manoeuvring starters used in mines
