|
US3512045A
(en)
|
|
Ground fault responsive apparatus for electric power distribution apparatus
|
|
US3594584A
(en)
|
|
Telemetry circuit for an ac power system
|
|
US3686531A
(en)
|
|
Fault locating system for electrical circuits
|
|
US3974446A
(en)
|
|
Polyphase fault current flow detecting and resetting means
|
|
US5278512A
(en)
|
|
Apparatus and method for continuously monitoring grounding conductor resistance in power distribution systems
|
|
US2364994A
(en)
|
|
Electrified fence installation
|
|
GB1060643A
(en)
|
|
Electrical fault detection arrangement
|
|
US2660717A
(en)
|
|
Electrical ground detector
|
|
US3525902A
(en)
|
|
Water sensing safety control for high voltage electrical equipment
|
|
US4441134A
(en)
|
|
Circuit breakers sensitive to leakage currents
|
|
US4447844A
(en)
|
|
Electrical safety switch for electrical appliances
|
|
US3488559A
(en)
|
|
Device for the detection of defects to the ground and the protection of line portions of a three-phase system having a ground neutral conductor
|
|
US3659152A
(en)
|
|
Ground detector and guard circuit
|
|
US3895264A
(en)
|
|
Ground connection monitoring apparatus for mobile machines
|
|
BG100237A
(bg)
|
|
Метод и устройство за откриване и идентифициранена електрически кабели
|
|
PL63196B1
(de)
|
|
|
|
US3840782A
(en)
|
|
Means for indicating changes in an electrically conductive path
|
|
US4458239A
(en)
|
|
Fire extinguishing apparatus
|
|
US3496416A
(en)
|
|
Cable fault monitoring system
|
|
US1722419A
(en)
|
|
System for the distribution of electric energy
|
|
SU661416A1
(ru)
|
|
Устройство контрол сопротивлени заземл ющей жилы кабел
|
|
SU924630A2
(ru)
|
|
Устройство дл контрол цепи заземлени
|
|
SU1480001A1
(ru)
|
|
Устройство дл обнаружени однофазного замыкани на землю в трехфазной сети с изолированной нейтралью
|
|
US2462094A
(en)
|
|
Electrical safety interlocking system
|
|
SU1274069A1
(ru)
|
|
Устройство дл защиты от перенапр жений
|