| 摘要 |
FIELD: electric engineering, in particular, means for protecting from current damage when phase voltage hits body of device, for example, home appliance heating device. ^ SUBSTANCE: to body of device indicator for showing influx of phase voltage onto body is connected. Light signal coming from indicator is transformed in photo-transformer to electric current enough for activation of executive relay, disabling device from electric network. Device allows to avoid reassembling power grid in form of additional grounding wire connected to device, makes it possible to utilize two-contact sockets and plugs, also makes it possible to avoid recognition of zero wire in grid. ^ EFFECT: lower costs of protective means, expanded consumer capabilities of devices equipped with offered device, improved safety and comfort of device operation. ^ 1 dwg |
