GB1591058A - System for protection of an electric installation in a building - Google Patents
System for protection of an electric installation in a building Download PDFInfo
- Publication number
- GB1591058A GB1591058A GB53245/77A GB5324577A GB1591058A GB 1591058 A GB1591058 A GB 1591058A GB 53245/77 A GB53245/77 A GB 53245/77A GB 5324577 A GB5324577 A GB 5324577A GB 1591058 A GB1591058 A GB 1591058A
- Authority
- GB
- United Kingdom
- Prior art keywords
- earth leakage
- circuit protection
- leakage trip
- devices
- shaft
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 238000009434 installation Methods 0.000 title claims description 6
- 230000008878 coupling Effects 0.000 claims description 28
- 238000010168 coupling process Methods 0.000 claims description 28
- 238000005859 coupling reaction Methods 0.000 claims description 28
- 238000004804 winding Methods 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 5
- 238000010616 electrical installation Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 230000001012 protector Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
- H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
- H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/08—Terminals; Connections
- H01H71/082—Connections between juxtaposed circuit breakers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Breakers (AREA)
- Locating Faults (AREA)
- Distribution Board (AREA)
- Patch Boards (AREA)
- Connection Or Junction Boxes (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Description
(54) SYSTEM FOR PROTECTION OF AN ELECTRIC
INSTALLATION IN A BUILDING
(71) We, NEDERLANDSE WEBER
MATTSCHAPPIJ B.V., a Dutch Company of Parallelweg 41, P.O. Box 30, Coevorden,
The Netherlands, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to a system for the protection of an electrical installation in a building, comprising a distribution box having a housing in which one or more circuit protection devices are mounted. These circuit protection devices may consist of a trippable device such as a fuse holder and switch or an automatic safety device. The box may also contain one or more earth leakage trip devices, each of which is designed to interrupt the electric current through one of the circuit protection devices.
Such a system is generally known and is in accordance with the latest installation standards valid in Holland, which for some time past have required earth leakage protection in new buildings.
The application of these installation standards when existing buildings are renovated often raises the difficulty that the space available for the distribution box is not sufficient to permit the use of a distribution box larger than the conventional box which does not provide ground fault protection.
According to the invention, this difficulty is eliminated by providing a distribution box containing an array of one or more circuit protection devices and one or more earth leakage trip devices, the circuit protection devices and the earth leakage trip devices having housings which in the array provide an unobstructed ledge along which extends mechanical coupling means and the circuit protection devices and the earth leakage trip devices having means co-operating with the coupling means for transferring the action of the earth leakage trip devices to each of the circuit protection devices.
The system according to the invention is space- and cost-saving in that the earth leakage trip device does not itself comprise a switching device, but instead operates the circuit protection devices that have to be installed for other reasons. It is true that this implies that all circuit protection devices cooperating with the earth leakage trip device are switched off on activation of the earth leakage trip device and not only that circuit protection device protecting the circuit in which the ground fault occurs; however, this is acceptable in an electrical installation for a building in view of the gravity of such a situation on the one hand and the small chance of the event occuring on the other hand.
The system according to the invention provides a high degree of flexibility in that one or more circuit protection devices can be positioned adjacent to the earth leakage trip device. The circuit protection devices act independently of the earth leakage trip device and can also be controlled independently thereof.
In a preferred embodiment of the invention, the coupling means comprises a single whole shaft rotatably supported on the said unobstructed ledge presented by the array of the housings of the circuit protection devices and the earth leakage trip devices positioned adjacent to one another in the case, said rotatable shaft carrying eccentric cams forming with the shaft a rigid unit and positioned on the shaft in such a way that displacement of a catch in the earth leakage trip device out of its ready position is transferred to the inputs of the release mechanism in the circuit protection devices. An advantage obtained with said coupling means is that each circuit protection device is directly controlled from the earth leakage trip device.
Other parts of the invention are embodied in the preferred form which will now be described in some detail with reference to the accompanying drawings in which: Figure 1 shows in perspective view an outline of the combination of a number of elements constituting the system according to the invention; and
Figure 2 shows schematically the cooperation between an earth leakage trip device, coupling means and a circuit protection device, according to the invention.
In Figure 1, four circuit protection devices 1, 2, 3 and 4 are shown positioned in a longitudinal array with an earth leakage trip device 7. The housings of these devices are shaped so that when mounted on a rail 23 fitting in recesses 21, 22 in the respective devices, they together form a frontal ledge for a coupling means 6. The earth leakage trip device 7 has a lever 8 for switching on the mechanism thereof and a press button 9 for monitoring its operational condition. Terminals 10 and 11 provide the connection of the earth leakage trip device 7 to the distribution network represented by leads 12 and 13. Terminals 14 and 15 provide for the connection of the earth leakage trip device to the circuit protection devices 1, 2, 3 and 4 cooperating with the device by means of the distributor strips 16 and 17.
Terminals 18 and 19 provide the connection of the distributor strips 16 and 17 to the circuit protection device 4. Each group protector device is provided with a manually settable tumbler means 5.
The cooperation between the earth leakage trip device 30 and a circuit protection device 70 by means of the coupling means 60 is shown schematically in Figure 2. The earth leakage trip device 30 comprises a transformer having a core 34 and windings 33, 37 and 38.
The winding 33 is connected via the terminals 31 and 32 in series with one phase of the network. The winding 37 is connected via the terminals 35 and 36 in series with another phase of the network or with the neutral wire.
The windings 33 and 37 are wound on the core 34 in such a way that the winding 38, in the circuit formed by the leads 39 and 40 and the winding 41 will carry a current when the voltages induced by the windings 33 and 37 are unequal. With a sufficient value of current intensity in winding 41, (for example 30 mA), the core 42 attracts an armature 43 against the action of a spring 44. The armature 43 rotates around a shaft 45 and causes a ready set catch 47 to shoot against and displace an arm 62. The catch 47 can be set ready by operating tumbler means 8 which, by means of a toggle joint mechanism 51, 52, 53 and 54 and guide means 49, 50, sets the catch behind the shaft 45 around which the armature 43 rotates, the shaft 45 being provided with a notch through which the catch 47 can slide.
Displacement of the arm 62, which is fixedly arranged on the coupling shaft 61 of the coupling means 60, rotates the shaft 61 and a second arm 63 on the same coupling shaft.
The arm 63 operates the circuit protection device by contacting a pawl means 71 which is part of a toggle joint 71, 72. The toggle joint is pushed over its dead centre and thereby acts through a lost motion device 73 to switch off momentarily the current through the terminals 18 and 19 and the switch 74 and, if desired, a fuse 20. The switching mechanism is made operative beforehand to ready the mechanism by means of the tumbler means 5 and the spring means 75.
It should be noted that the coupling shaft and the cams arranged thereupon together form a rigid unit. Hence, there is no time lag between the activation of the earth leakage trip device and the operation thereby of the circuit protection devices coupled thereto.
In this way it is possible, according to the invention, to control from one earth leakage trip device several, for example, four, circuit protection devices for installation groups within the standard time period allowed for ground fault detection. The size of the distributor case can be restricted to bottom measurements of 110 x 220 mm, which are measures conventionally used in buildings, providing space even for a further earth leakage trip device and two further circuit protection devices in the array in the case of the distribution case.
The coupling means need not be longer than the length of the array of devices in the case.
With respect to the distance in longitudinal direction between the contact means to be arranged on the coupling shaft, building in modules is preferred.
WHAT WE CLAIM IS:
1. Apparatus for the protection of an electrical installation in a building comprising a distribution box containing an array of one or more circuit protection devices and one or more earth leakage trip devices, the circuit protection devices and the earth leakage trip devices having housings which in the array provide an unobstructed ledge along which extends mechanical coupling means and the circuit protection devices and-the earth leakage trip devices having means co-operating with the coupling means for transferring the action of the earth leakage trip devices to each of the circuit protection devices.
2. Apparatus as claimed in Claim 1, in which the output of the earth leakage trip device comprises a movable catch which can be moved from a biased ready position.
3. Apparatus as claimed in Claim 1, in which the circuit protection device comprises a releasing mechanism having an input sensing the movement of an exterior cam, said input comprising a pawl means.
4. Apparatus as claimed in any of the preceding claims, in which the coupling means comprises a single shaft rotatably supported
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (5)
1. Apparatus for the protection of an electrical installation in a building comprising a distribution box containing an array of one or more circuit protection devices and one or more earth leakage trip devices, the circuit protection devices and the earth leakage trip devices having housings which in the array provide an unobstructed ledge along which extends mechanical coupling means and the circuit protection devices and-the earth leakage trip devices having means co-operating with the coupling means for transferring the action of the earth leakage trip devices to each of the circuit protection devices.
2. Apparatus as claimed in Claim 1, in which the output of the earth leakage trip device comprises a movable catch which can be moved from a biased ready position.
3. Apparatus as claimed in Claim 1, in which the circuit protection device comprises a releasing mechanism having an input sensing the movement of an exterior cam, said input comprising a pawl means.
4. Apparatus as claimed in any of the preceding claims, in which the coupling means comprises a single shaft rotatably supported
on the ledge presented by the array of housings of the circuit protection devices and the earth leakage trip device, said rotatable shaft carrying eccentric cams constituting with the shaft a rigid unit and being so positioned on the shaft that displacement of a catch in the earth leakage trip device from its ready position is transferred to the inputs of release mechanism in each of the circuit protection devices.
5. Apparatus for the protection of an electrical installation in a building substantially as described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7614248A NL7614248A (en) | 1976-12-22 | 1976-12-22 | SCHEME FOR PROTECTION OF AN ELECTRICAL INSTALLATION IN A BUILDING. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1591058A true GB1591058A (en) | 1981-06-10 |
Family
ID=19827430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB53245/77A Expired GB1591058A (en) | 1976-12-22 | 1977-12-21 | System for protection of an electric installation in a building |
Country Status (9)
| Country | Link |
|---|---|
| DE (1) | DE2756237C2 (en) |
| DK (1) | DK570477A (en) |
| ES (1) | ES465307A1 (en) |
| FR (1) | FR2375740A1 (en) |
| GB (1) | GB1591058A (en) |
| IT (1) | IT1090634B (en) |
| NL (1) | NL7614248A (en) |
| NO (1) | NO146726C (en) |
| SE (1) | SE438571B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2247568A (en) * | 1990-08-30 | 1992-03-04 | Mk Electric Ltd | Circuitbreaker electrical control apparatus |
| AU703732B2 (en) * | 1994-09-28 | 1999-04-01 | Schneider Electric Sa | Residual current circuit breaker associated to one or more circuit protection elements such as fuse cut-outs or circuit breakers |
| EP1065749A1 (en) * | 1999-07-02 | 2001-01-03 | Legrand | Connection accessory for electrical apparatus, in particular for modular electrical apparatus |
| WO2009060474A1 (en) * | 2007-11-09 | 2009-05-14 | Hilmir Ingi Jonsson | Ground terminal block fault indicator |
| RU2490747C1 (en) * | 2011-02-22 | 2013-08-20 | ЭлЭсАйЭс КО., ЛТД. | Circuit breaker |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2430660A1 (en) * | 1978-07-03 | 1980-02-01 | Merlin Gerin | DIFFERENTIAL BLOCK FOR TRIGGERING OF AN ELECTRIC CIRCUIT BREAKER |
| DE2834327C2 (en) * | 1978-08-04 | 1983-01-13 | Heinrich Kopp Gmbh & Co Kg, 8756 Kahl | Full electrical circuit breaker |
| FR2513007A1 (en) * | 1981-09-15 | 1983-03-18 | Telemecanique Electrique | ELECTRICAL APPARATUS, IN PARTICULAR A RELAY OR SMALL CONTACTOR |
| NL185373C (en) * | 1983-09-21 | 1990-03-16 | Hazemeijer Bv | ELECTRICAL DISTRIBUTION SYSTEM. |
| DE3518873C2 (en) * | 1984-05-17 | 1993-12-09 | Siemens Ag | Arrangement of electrical communications equipment in a rack |
| DE3431581A1 (en) * | 1984-08-28 | 1986-03-20 | Friedrich Dipl.-Ing. 8033 Krailling Lauerer | Electrical circuit breaker |
| DE4337254B4 (en) * | 1993-11-02 | 2005-05-19 | Aeg Niederspannungstechnik Gmbh & Co Kg | Fault current module, which can be assembled with circuit breakers |
| FR2731837B1 (en) * | 1995-03-16 | 1997-06-06 | Legrand Sa | SINGLE POLE AND NEUTRAL DIFFERENTIAL CIRCUIT BREAKER |
| FR2751162B1 (en) * | 1996-07-11 | 1998-10-23 | Legrand Sa | ELECTRIC APPARATUS WITH INPUT AND OUTPUT TERMINALS OPENING ON THE SAME SIDE OF THE HOUSING |
| FR2751125B1 (en) * | 1996-07-11 | 1998-10-23 | Legrand Sa | DIFFERENTIAL PROTECTION ELECTRICAL APPARATUS |
| FR2754401B1 (en) * | 1996-10-08 | 1998-11-20 | Schneider Electric Sa | DEVICE FOR ELECTRICALLY CONNECTING BETWEEN A PROTECTION DEVICE SUCH AS A DIFFERENTIAL SWITCH AND DEPENDENT DEVICES SUCH AS DIVISIONAL CIRCUIT BREAKERS AND / OR DIVISION FUSES |
| US7576630B2 (en) * | 2004-09-13 | 2009-08-18 | Cooper Technologies Company | Fusible switching disconnect modules and devices |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3218418A (en) * | 1961-05-19 | 1965-11-16 | Westinghouse Electric Corp | Circuit breaker with arc-extinguishing means |
| DE1169015B (en) * | 1962-09-28 | 1964-04-30 | Siemens Ag | Electrical circuit breakers with overcurrent, short-circuit and residual current releases |
| US3256407A (en) * | 1963-10-28 | 1966-06-14 | Gen Electric | Circuit breaker and accessory device combination |
| DE2115034B2 (en) * | 1971-03-29 | 1977-07-21 | Brown, Boveri & Cie Ag, 6800 Mannheim | CIRCUIT BREAKER WITH OVERCURRENT, SHORT CIRCUIT AND FAULT CURRENT PROTECTION |
| US3745414A (en) * | 1972-01-21 | 1973-07-10 | Westinghouse Electric Corp | Ground fault circuit interrupter |
| US3855502A (en) * | 1973-02-22 | 1974-12-17 | Ite Imperial Corp | Ground fault interrupter device |
-
1976
- 1976-12-22 NL NL7614248A patent/NL7614248A/en not_active Application Discontinuation
-
1977
- 1977-12-14 NO NO774292A patent/NO146726C/en unknown
- 1977-12-16 DE DE2756237A patent/DE2756237C2/en not_active Expired
- 1977-12-20 DK DK570477A patent/DK570477A/en not_active Application Discontinuation
- 1977-12-21 FR FR7738649A patent/FR2375740A1/en active Granted
- 1977-12-21 GB GB53245/77A patent/GB1591058A/en not_active Expired
- 1977-12-21 ES ES465307A patent/ES465307A1/en not_active Expired
- 1977-12-22 IT IT52336/77A patent/IT1090634B/en active
- 1977-12-22 SE SE7714622A patent/SE438571B/en unknown
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2247568A (en) * | 1990-08-30 | 1992-03-04 | Mk Electric Ltd | Circuitbreaker electrical control apparatus |
| AU703732B2 (en) * | 1994-09-28 | 1999-04-01 | Schneider Electric Sa | Residual current circuit breaker associated to one or more circuit protection elements such as fuse cut-outs or circuit breakers |
| CN1054232C (en) * | 1994-09-28 | 2000-07-05 | 施耐德电器工业公司 | Defferential switch associated to one or more circuit protection elements such as fuse cut-guts or circuit breakers |
| EP1065749A1 (en) * | 1999-07-02 | 2001-01-03 | Legrand | Connection accessory for electrical apparatus, in particular for modular electrical apparatus |
| FR2795874A1 (en) * | 1999-07-02 | 2001-01-05 | Legrand Sa | CONNECTION ACCESSORY FOR ELECTRICAL EQUIPMENT, PARTICULARLY FOR MODULAR ELECTRICAL EQUIPMENT |
| WO2009060474A1 (en) * | 2007-11-09 | 2009-05-14 | Hilmir Ingi Jonsson | Ground terminal block fault indicator |
| CN101855787B (en) * | 2007-11-09 | 2012-12-05 | 希尔米尔·因吉·琼森 | Ground terminal block fault indicator |
| US8482423B2 (en) | 2007-11-09 | 2013-07-09 | Remake Electric Ehf. | Ground terminal block fault indicator |
| RU2490747C1 (en) * | 2011-02-22 | 2013-08-20 | ЭлЭсАйЭс КО., ЛТД. | Circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| SE438571B (en) | 1985-04-22 |
| IT1090634B (en) | 1985-06-26 |
| FR2375740A1 (en) | 1978-07-21 |
| SE7714622L (en) | 1978-06-23 |
| ES465307A1 (en) | 1979-01-01 |
| NL7614248A (en) | 1978-06-26 |
| NO146726B (en) | 1982-08-16 |
| DK570477A (en) | 1978-06-23 |
| NO774292L (en) | 1978-06-23 |
| NO146726C (en) | 1982-11-24 |
| DE2756237C2 (en) | 1983-07-14 |
| DE2756237A1 (en) | 1978-07-06 |
| FR2375740B1 (en) | 1981-12-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |