FIELD: protective relays.
SUBSTANCE: proposed protective relay is disposed in hollow or embedded relative to its front end; mentioned hollow functions as through passage for interconnecting conductors connected to control terminals of relay and contactor. Hollow is closed under normal operating conditions by means of shutter in the form of flap or by fixed part of box. Interconnected conductors may be, essentially, separate cables or they may be pre-inerconnected by means of additional member prior to laying them in tunnel.
EFFECT: provision for making concealed control junction between relay and contactor.
7 cl, 6 dwg
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