Protection relay and protected control set with front wiring
AssigneeSchneider Electric Industries SAS
InventorsDenis Bouchard, Daniel Sinthomez
Life of this patent
Estimating the term…
Abstract
The invention concerns a protection relay, in particular of the thermal type, recessed relative to its front face (24), a recess acting as through passage for interconnection of the conductors (C) between the terminals of the relay control (23) and of the contact switch (16). The recess (27) is concealed in normal operation by a shutter consisting of a flap (26) or a fixed part (26′) of the housing (20). The interconnection conductors can consist of individual cables (C) or can be integrated to a precabling addition (40) housed in the recess.
Claims9
A protection relay for connection to a contactor, comprising:
- a relay box (20) having a front face and comprising input power connection terminals and control terminals for connection to corresponding power and control terminals of an adjacent contactor, and manually operable devices located on the front face for actuation or adjustment;
- and
- a prewiring accessory (30, 40), wherein
- the relay box (20) comprises at least one recess (27, 27′) setback from the front face for passage therethrough of at least one interconnection conductor (C;
- 31, 32;
- 41, 42) for connection between a relay control terminal and a contactor control terminal (16), a cover 26, 26′ for masking said at least one recess, and housing part of the prewiring accessory (30, 40) located on the front face, the prewiring accessory comprising the at least one interconnection conductor.
A protection relay control set comprising:
- a protection relay and a contactor each inside a respective box, the box (10) of the contactor having a contactor front face (14) with a control terminal block (13) mounted thereto, the protection relay box (20) having a top face (28) that is approximately plane and adjacent to the contactor box and a relay front face (24) projecting beyond the contactor front face (14) of the contactor box, with a space (13a) between the protection relay and the control terminal block, a recess (27, 27′) being behind the relay front face (24) of the relay box for passage of at least one interconnection conductor (C) connecting a control terminal (23) of the relay with a control terminal (16) of the contactor, through the space (13a), the recess (27, 27′) being concealed in normal service by a cover (26, 26′).
Dependencies are inferred from the claim text.