WO2015145199A1 - Tableau de fusibles - Google Patents

Tableau de fusibles Download PDF

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Publication number
WO2015145199A1
WO2015145199A1 PCT/IB2014/060112 IB2014060112W WO2015145199A1 WO 2015145199 A1 WO2015145199 A1 WO 2015145199A1 IB 2014060112 W IB2014060112 W IB 2014060112W WO 2015145199 A1 WO2015145199 A1 WO 2015145199A1
Authority
WO
WIPO (PCT)
Prior art keywords
rcd
fuseboard
phase
input
output
Prior art date
Application number
PCT/IB2014/060112
Other languages
English (en)
Inventor
Corneliu Alin CARCU
Original Assignee
Carcu Corneliu Alin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carcu Corneliu Alin filed Critical Carcu Corneliu Alin
Priority to PCT/IB2014/060112 priority Critical patent/WO2015145199A1/fr
Publication of WO2015145199A1 publication Critical patent/WO2015145199A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection

Definitions

  • the present invention relates to fuseboards and distribution boards, in particular to fuseboards for use in single or three phase installations in buildings, including: domestic, commercial and industrial premises.
  • Fuseboards intended for use in buildings typically have inputs of either single or three phase power, at AC voltages of less than 1000V, more typically 400V for three phase and 240V for single phase in the UK, and other voltages in other countries, for example 1 15V in the USA.
  • a fuseboard is adapted for one of single or three phase power input.
  • fuseboards have main isolator switches controlling the input from the power supply, and a number of subsidiary isolator switches controlling output circuits branching from the outputs of the main isolator switches.
  • the main isolator switches comprise RCD (residual current devices) current trips to isolate the input in the event of a circuit failure such as a short circuit.
  • RCD residual current devices
  • the output circuits are protected by fuses.
  • all output circuits are protected by an RCD.
  • an RCD device is not advantageous: for example in control of essential circuits such as an alarm power supply, an RCD device is not required as accidental trip of the RCD could lead to a hazardous condition.
  • Prior art fuseboards have the disadvantage that they cannot accommodate such circuits as well as RCD-protected circuits. They also have the disadvantage of requiring either an expensive three-phase RCD device or an expensive multiplicity of RC devices, one for each output circuit.
  • Embodiments of the present invention provide a (usually relatively cheap) single phase RCD device for each incoming phase, the outputs from these three devices can then be used recombined to provide one or more RCD-protected three-phase outputs and/or can be used singly each to provide one or more RCD-protected single phase outputs. Also, when there is required one or more non-RCD-protected outputs, the same can be taken off prior to the RCD devices, singly for single phase and in combination for three-phase.
  • One aspect of the invention is a fuseboard as claimed in claim 1.
  • each of said first output circuits comprises a circuit breaker
  • each of said first output circuits comprises an overload protection device
  • said input means comprises a multi-pole isolator having said at least three outputs, these being respective single-phase line outputs of respective poles of the isolator;
  • said RCD means output comprises connected from each said single-phase RCD at least one busbar and one or more said first output circuits;
  • Embodiments provide an improved fuseboard that may provide both RCD protected and non-RCD protected circuits in a flexible manner, in some embodiments together with the capability of accepting both single and three-phase power supplies in a common device, being able to accommodate large number of circuits (18 or more) and being able to handle large loads.
  • Embodiments provide a fuseboard that comprises three single-phase RCD's and is adapted to provide a plurality of single phase and/or three-phase outputs from each of these and/or from them used in multi-phase combination, and in one embodiment provides both RCD-protected and non-RCD-protected circuits.
  • Such a device addresses a gap in the present provision of such devices market need and would have considerable practical and commercial value.
  • Embodiments provide a fuseboard comprising: a power input having at least one line and one neutral input; an input isolator in line with each line input; an input RCD means in electrical connection to the output of each input isolator; a line busbar in electrical connection to the output of each input RCD means and a neutral busbar in electrical connection to the neutral input; one or more first output circuits, each comprising an output circuit breaker means in electrical connection to at least one line busbar and an output connector in electrical connection to the output of the output circuit breaker means.
  • each first output circuit further comprises a connection to the neutral busbar.
  • the output connector is in the form of a terminal block as known in the art, comprising at least a first terminal connection in electrical connection with the output of the output circuit breaker means and a second terminal connection in electrical connection with the neutral input.
  • the output circuit breaker means may comprise a double pole switch means that acts in use to break both the line and neutral connections to the relevant busbars.
  • the output circuit breaker means may comprise an over-current trip means.
  • the output circuit breaker means may comprise an RCD device, or an RCBO (Residual Current circuit Breaker with Over-Current protection) device.
  • the fuseboard is adapted for a three-phase power input and comprises three line inputs and one neutral input, an input isolator pole in line with each of the three line inputs, three input RCD means, three line busbars, one in electrical connection to the output of each RCD means, and at least one first output circuit in electrical connection to one line busbar.
  • the fuseboard comprises a plurality of first output circuits, some connected to a first line busbar, others connected to second and third line busbars.
  • the three input RCD means comprise separately actuable independent RCD means, one in line with each line input. In this way each phase is protected by a separate RCD device.
  • the fuseboard further comprises one or more second output circuits, each comprising a second output circuit breaker means in electrical connection to the output of an input isolator and a second output connector in electrical connection to the output of the second output circuit breaker means.
  • the second output connector comprises a line connection in electrical connection to an output from an input isolator and a neutral connection in electrical connection with the neutral input.
  • the second output circuits further comprise switch means in series with the line and neutral connections, and in preferred embodiments additionally overcurrent trip or fuse means in series.
  • switch means serve to isolate each second output circuit individually from the outputs of the input isolators.
  • the fuseboard of the invention is housed in a cabinet having a long and a short axis and a depth.
  • the cabinet is formed from an insulating material.
  • the cabinet may be formed at least in part from metal, the metal components preferably being connected to electrical earth.
  • the components of the fuseboard are laid out within the cabinet in a pattern that represents the sequence of power connections within the cabinet.
  • the fuseboard components are laid out as follows, in sequence from a first end of the cabinet: input terminals for a three phase power input at a first end of the cabinet; then three isolators; then three input RCD devices positioned further from the first end than the isolators; then the output circuit breakers positioned closer to the second end of the cabinet.
  • a preferred layout is as follows in sequence from a first end of the cabinet: input terminals for a three phase power input at a first end of the cabinet; then three isolators; then the second output circuit breakers; then three input RCD devices; then the first output circuit breakers positioned closer to the second end of the cabinet.
  • the fuseboard further comprises conductor means to connect the outputs from three input RCD devices arranged laterally to three busbars stacked one above the other suitable to feed into the rows of first output circuit breakers.
  • the fuseboard further comprises conductor means to connect the outputs from the input isolators arranged laterally to three busbars stacked one above the other suitable to feed into the rows of second output circuit breakers, and conductor means to connect the three busbars stacked one above the other from the second output circuit breakers to the inputs of the three input RCD devices arranged laterally.
  • the fuseboard further comprises an earth busbar.
  • the neutral busbar and the earth busbar are located at opposite sides of the cabinet.
  • the fuseboard of the invention is adapted to be used with either a three phase or a single phase power input without modification, in contrast with fuseboards of the prior art which are either for single or for three-phase supplies.
  • a single phase installation may be changed to a three-phase installation without replacement of the fuseboard.
  • the isolators, RCD devices and internal metal conductor components are rated and dimensioned to handle a total number of output circuits above 18 and a total load exceeding 100 Amps.
  • Figure 1 shows a front view of an embodiment of the invention
  • Figure 2 shows a side view of an embodiment of the invention
  • Figure 3 shows a three-quarter view of an embodiment of the invention
  • Figure 4 shows a second side view of an embodiment of the invention
  • Figure 5 shows a rear view of an embodiment of the invention
  • Figure 6 shows an exploded view of an embodiment of the invention
  • Figure 7 shows a view of a first end of an embodiment of the invention
  • Figure 8 shows a view of a second end of an embodiment of the invention
  • Figure 9 shows a side exploded view of an embodiment of the invention
  • Figure 10 shows an exploded view of an embodiment of the invention
  • Figure 11 shows a three quarter view of an embodiment of the invention with a front cover closed
  • Figure 12 shows a sketch of a circuit diagram of an embodiment of the invention
  • Figures 1 to 11 show a first embodiment of the invention having both RCD-protected and non-RCD protected circuits and being adapted for a three-phase input.
  • Figure 1 shows a front view of the front panel of the fuseboard showing a cabinet comprising from bottom to top: a three-pole input isolator; six second circuit breakers in electrical connection with the output of the input isolator; three RCD devices (or a three- pole RCD device in some embodiments) in electrical connection to the output of the input isolators; two banks of first output circuit breakers, 12 in each bank.
  • the first output circuit breakers may be connected to line busbars from the three phase supply as appropriate. Preferably they are distributed among the phases. Preferably they are distributed in a recognised order among the phases and which phase each output circuit is connected to is indicated on the front panel.
  • Figure 3 shows a three-quarter view of the embodiment in figure 1 , additionally showing the input gland/aperture through which input power cables may pass.
  • Figure 2 and figure 4 show side views and figure 5 a rear view of a cabinet of the embodiment shown in figures 1 and 3.
  • Figure 6 shows an exploded view of the components of the embodiment shown in the previous figures.
  • Figure 9 and figure 10 show side and reverse angle exploded views of the same embodiment.
  • 9 and 10 components are shown in levels from bottom to top, and listed from the first (input) end of the cabinet to the second, as follows:
  • Back component of the cabinet in preferred embodiments comprising a lightweight aluminium frame.
  • Second output circuit breakers shown as having rail mounted circuit breaker format as known in the art
  • the neutral busbar appears to lie between the two rows of the first output circuit breakers - preferably the neutral busbar lies along the right hand side of the cabinet, and its apparent position results from the nature of the exploded view. Locations are more clearly shown in figures 9 and 10.
  • the neutral and earth busbars are located on opposite sides of the cabinet, for example with the neutral busbar located at the right hand side of the cabinet relative to inputs at the bottom.
  • Cabinet fascia In use this is preferably covered by a front cover (not shown).
  • Figures 7 and 8 show the first and second ends of the cabinet of the embodiment, and figure 1 1 shows the embodiment with a front cover closed.
  • Figure 12 is a circuit diagram illustrating an embodiment of the invention which may also be part of the same embodiment of the fuseboard 28 as described above with reference to Figures 1 to 1 1. From bottom 54 to top 56 are shown: three input lines 24, marked L1 , L2 and L3; input isolator means 32, which comprises three input isolators 32; a neutral input 25, marked N, to a neutral busbar 91 ; a series of second output circuits 50, at least two (four being shown, by way of example) connected to each line 24 from the outputs
  • circuit breakers of the usual kind will be provided as respective second output circuit breakers, not shown, in each output circuit 50) and therefore incidentally also connected to the input side 35 of RCD's 34 (see next item) so as not to be protected by the RCD's 34; a respective single-phase RCD device 34 protecting each line 24 connected to the respective outputs 36; and first output circuits
  • any group of L1 , L2 and L3 first output circuits 37 correspondingly then provides three phases, and can constitute a three-phase first output circuit 37 from three single-phase RCD's 34.
  • any group of L1 , L2 and L3 second output circuits 50 correspondingly then provides three phases, and can constitute a three-phase RCD-unprotected second output circuit 50 from input isolator means 32.

Landscapes

  • Distribution Board (AREA)

Abstract

L'invention concerne un tableau de fusibles comprenant trois dispositifs à courant résiduel (RCD) monophasés, et conçu pour fournir une pluralité de sorties monophasées et/ou triphasées provenant de chacun des RCD et/ou des RCD mis en oeuvre dans une combinaison multiphasée. Un mode de réalisation concerne à la fois des circuits protégés par RCD et des circuits non protégés par RCD.
PCT/IB2014/060112 2014-03-24 2014-03-24 Tableau de fusibles WO2015145199A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2014/060112 WO2015145199A1 (fr) 2014-03-24 2014-03-24 Tableau de fusibles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2014/060112 WO2015145199A1 (fr) 2014-03-24 2014-03-24 Tableau de fusibles

Publications (1)

Publication Number Publication Date
WO2015145199A1 true WO2015145199A1 (fr) 2015-10-01

Family

ID=50792476

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2014/060112 WO2015145199A1 (fr) 2014-03-24 2014-03-24 Tableau de fusibles

Country Status (1)

Country Link
WO (1) WO2015145199A1 (fr)

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Three Phase Electrical Wiring Installation in Home", INTERNET ARTICLE, 12 June 2013 (2013-06-12), XP002732401, Retrieved from the Internet <URL:http://www.electricaltechnology.org/2013/12/three-phase-electrical-wiring.html> [retrieved on 20141111] *
ANONYMOUS: "Wiring of A Three Phase Distribution Board or a Consumer Unit", INTERNET ARTICLE, 2013, pages 1 - 6, XP002732400, Retrieved from the Internet <URL:http://www.electrolesk.com/Work/Wiring%20of%20Three%20%20Phase%20Distribution%20Board.htm> [retrieved on 20141111] *

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