ES2615103T3 - Energy distribution system with functional zones that can be isolated individually - Google Patents

Abstract

Electrical distribution panel (100) for active line work, including (a) a power distribution compartment (102) and a plurality of insulating compartments (104) adjacent to the power distribution compartment; and (b) a plurality of distribution conductors (108) respectively terminating within the plurality of insulating compartments (104), wherein the plurality of distribution conductors (108) may be electrically insulated from respective supply conductors. (106) by means of respective isolation devices (112) housed in the power distribution compartment (102); wherein each of the isolation devices is associated with, but is external to, one of the plurality of isolation compartments (104); and wherein the power distribution compartment has a cover (518) that includes openings through which the isolation devices (112) are individually accessible by an operator from outside the power distribution compartment without the operator entering in contact with the live conductors, so that the distribution conductors (108) terminating inside the individual insulating compartments (104) can be isolated from the supply conductors (106) and electrical work can be performed safely in respective insulated distribution conductors (108) within respective insulating compartments (104) while the other distribution conductors (108) remain energized.

Description

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Design criteria -In the electrical cross-linking design stage, functional areas that can be individually isolated provide substantial flexibility to ensure continuity of the power supply to critical loads for maintenance procedures, including, for example: thermographic inspection fault repair; update procedures; breakdowns -reestablish fast supply at critical loads -because of being able to access power from a functional area distribution board that can be isolated for the connection of temporary cables for temporary power supply of the distribution board to restore power to the critical loads; AC distribution - all voltages without limitations; DC distribution of all voltages without limitations; current -without limitations.

The embodiments of the invention provide functional zones that can be isolated individually that when isolated have no active conductors inside, eliminating or at least minimizing the risk of electrocution. The embodiments allow electricians to isolate a functional zone that can be isolated individually for each output circuit / cable and alter the protection device within the functional zone that can be isolated to accommodate the site change requirements without the requirement to isolate The entire distribution board, for example, single-phase / three-phase output subcircuits of 15 to 32 amps / switch outputs of 15 to 32 amps in the field.

The embodiments of the invention also provide a functional area that can be isolated individually for a fully nominal alternative input power circuit / cable (feedback), which can also be used as a fully nominal output power circuit. The embodiments provide additional functional areas that can be individually isolated for vertical electrical cable connection boxes. In addition, the embodiments allow electricians to isolate functional zones that can be isolated individually by operating the protective device inside the junction box, and allows the connection / disconnection of the circuit / cable within the functional zones that can be insulate to accommodate site change requirements without the requirement to isolate all vertical cables.

The embodiments of the invention provide more functional zones that can be isolated individually for monitoring / measuring / surge suppression equipment. This allows electricians to isolate a functional zone that can be isolated individually for voltage monitoring equipment / power quality measurement / surge suppression for updating and service purposes.

In addition, the embodiments of the invention provide functional zones that can be individually isolated for voltage-free connections of the BAS terminals. This allows the voltage-free monitoring of the state of the circuit breaker / monitoring of the voltage supply / surge suppression status that ends in the individual functional zone for connection without voltage to the BAS connection terminals.

In embodiments of the distribution board, individual functional zones that can be isolated can be supplied from the active area of the distribution board through 1,2,3 or 4-pole isolators / circuit breakers / fuses that are used to isolate each functional area that can be isolated. The neutral conductors that supply the functional zones that can be isolated are terminated within the active zone of the distribution board to a traditional neutral bar and, in the case of a 4-pole switching arrangement, the neutral is connected directly to the insulator / circuit breaker - (4 poles). The grounding conductors that feed the functional zones that can be isolated are terminated within the active zone of the distribution board to a traditional grounding bar. All internal grounding conductors between the active zone of the control unit and the functional areas that can be isolated end in the two zones below the screw terminal or with curly legs and bolts and do not require specialized insulation in the active areas or in functional areas that can be isolated. The protection options of the subprincipal or subcircuit outgoing cables of 1, 2, 3, 4 phase poles can be achieved at the design stage, so that when the distribution panel of the functional zone that can be isolated is manufactured and the critical load is connected, alterations can be made in the protection devices within the functional zones that can be isolated. For example, if three-phase 63 amp dedicated circuit isolators / circuit breakers / fuses are used within the active zone to power the functional zones that can be isolated, and if the conductors between the active zone and the functional zones that can be isolated are of adequate size and are protected, then the protection devices within the functional zones that can be isolated can be selectively varied between one, two and three phases and between nominal currents of 10, 16, 20, 32, 40, 50, 63 amps This allows flexible alterations of the subprincipal and final subcircuit without isolating other critical loads connected to the same distribution board. The result is that each conductor inside the cable that is connected or disconnected from the distribution board ends in the functional zone that can be isolated individually in a circuit breaker, a set of fuses, a terminal, or screwed to a copper link.

The embodiments of the invention avoid the need for electricians to interact with live conductors under load, since there are none within the isolated functional zones. The only conductors that require the interaction of the electrician are individual circuits that are isolated by the functional zones. Functional zones that can be individually isolated from embodiments of the invention allow a wide range of procedures to be performed safely without de-exciting the entire system or a critical load supplied in this way. Such procedures may, for example, include: replacement of a defective protection device

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Claims (1)

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