Translations:How to operate relay line block equipment/7/en

Non-automatic line block - półsamoczynna blokada liniowa (PBL)

The non-automatic line block is an umbrella term for all line block designs that require the involvement of the signaller. In some cases, however, non-automatic systems can be partially or fully automated. The line block of design C does never operate automatically, here each individual operating step must be carried out manually. The Eap type is a line block that operates partially automatically.