EP1124245A2 - Fehlerstrom-Schutzschalter - Google Patents
Fehlerstrom-Schutzschalter Download PDFInfo
- Publication number
- EP1124245A2 EP1124245A2 EP01810042A EP01810042A EP1124245A2 EP 1124245 A2 EP1124245 A2 EP 1124245A2 EP 01810042 A EP01810042 A EP 01810042A EP 01810042 A EP01810042 A EP 01810042A EP 1124245 A2 EP1124245 A2 EP 1124245A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- circuit breaker
- residual current
- housing
- heating resistor
- connections
- 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.)
- Granted
Links
Images
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
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
- H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
-
- 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
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
- H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly
- H01H2083/045—Auxiliary switch opening testing circuit in synchronism with the main circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2239/00—Miscellaneous
- H01H2239/034—Environmental protection
- H01H2239/036—Heating, e.g. against condensation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/02—Bases, casings, or covers
- H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
- H01H9/047—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings provided with venting means
Definitions
- a fault current ⁇ circuit breaker is assumed the preamble of claim 1.
- Fault current ⁇ Prevent circuit breakers Electrical accidents and fires in electrical systems. You monitor the to a low voltage consumer flowing electricity continuously and interrupt the power supply before a fault current flowing to earth for People, animals or things can become dangerous. Usually they are Residual current ⁇ Circuit breakers in distributors, often also in sockets and plugs installed and have an active part.
- This active part essentially contains one Tripping system with a generally designed as a summation current transformer Residual current sensor and one usually designed as a magnetic release Trigger, a contact arrangement arranged in a circuit preferably designed as a key switch drive system for opening the Contact arrangement when a fault current occurs in the circuit and one Test circuit for checking the functionality of the switch.
- An earth leakage circuit breaker arranged in a socket is, for example in EP 641 044 B1 and EB 641 045 B1.
- This residual current circuit breaker is housed in a can-shaped housing and has an active part, which with plug-in connections with a consumer and Terminal connections can be connected to a low-voltage network.
- the active part has a contact arrangement driven by a key switch and a magnetic release, which the when a fault current occurs Triggers the lock to open the contact arrangement.
- Key switch and Magnetic triggers are sensitive components, which after long operation of the Residual current circuit breaker due to environmental influences in its functionality may be impaired and then no longer trigger Ensure 100% security.
- the object of the invention is as set out in the claims based on a fault current ⁇ circuit breaker of the type mentioned create, which is simply constructed and yet by large Reliability.
- the active part by an im Heating element located inside the switch housing on a predetermined Temperature maintained. This temperature is certainly higher than that outside outside temperature of the housing.
- the switch housing thus displacing unwanted moisture and other aggressive air components and largely avoided oxidation and corrosion damage. The risk of failure of oxidation and / or corrosion Magnetic release or key switch is significantly reduced.
- the heating element is preferably designed as a heating resistor, since then for one generates heat particularly easily, the other also generates Amount of heat can be dosed particularly easily.
- the heating resistor is designed as a PTC resistor, the strength of the Heating current can be regulated without additional funds. This can in particular then heating energy is saved and excessive heating is avoided, if the residual current circuit breaker is connected by a consumer Electricity carries and thus the own heat loss for a sufficient high Temperature inside the switch housing ensures.
- Figures 1 to 5 each show one of five different circuit diagrams Embodiments of the residual current circuit breaker according to the invention.
- the embodiments of the earth leakage circuit breaker according to the invention shown in Figures 1 to 5 each have a dashed housing 1, which is preferably made of plastic, in particular a possibly containing polymer, such as a thermoplastic or thermoset.
- An active part 2 of the residual current circuit breaker is arranged in the housing 1.
- the active part has a contact arrangement 3, a summation current transformer 4, a magnetic release 5 and a switch lock 6.
- the active part 2 has three phase conductors L 1 , L 2 L 3 and a neutral conductor N.
- the four conductors L 1 , L 2 , L 3 and N are led through the summation current transformer 4 and are connected at one end to one of four current connections 7 and at their other ends to one of four current connections 8.
- the power connections 7 can be connected to a low-voltage network and the power connections 8 to a consumer.
- the active part 2 has only the phase conductor L 1 and the neutral conductor N.
- the two conductors L 1 and N are guided through the summation current transformer 4 and connected to two of the current connections 7 and 8.
- the reference numeral 9 denotes a test resistor of a test circuit in all embodiments.
- the test resistor 9 is at one end via an unspecified auxiliary contact of the contact arrangement 3 with the phase conductor L 3 (FIG. 1 ) or L 1 (FIGS. 2 to 5) and at its other end via a test contact 10, which is actuated from the outside can be connected to the neutral conductor N.
- the housing 1 also has a heating element designed as a heating resistor 11.
- a second heating resistor 12 in the housing 1.
- the summation current transformer 4 detects an im Current path to the consumer, d. H. between the network connections 7 and Consumer connections 8, flowing fault current to form one on the Magnetic trigger 5 acting trigger signals. In response to this signal, the Magnetic trigger actuates and triggers by triggering switch 6 Opening the contact arrangement 3.
- the heating resistor 11 now ensures that after the installation of the fault current ⁇ circuit breaker in a system, for example in a distribution box, the active part located inside the switch housing 1 can be kept at a higher temperature than the ambient temperature and that moisture and other harmful atmospheric components from the Keep the interior of the housing away.
- Sensitive components of the active part such as in particular, the magnetic release 5 and the key switch 6 keep their full Operability over a much longer period than the same Components in a fault current ⁇ Circuit breaker without one Heating resistor.
- Typical values of the heating resistor 11 are between 30 to 60 k ⁇ . With the resulting heating outputs of approx. 1 to 2 W, one can Temperature increase of 5 to 10 ° C can be achieved inside the housing 1. As field tests showed, this temperature increase is sufficient to reduce the Reliability of the residual current circuit breakers equipped with the heating resistors to increase drastically.
- the heating resistor 11 is connected between sections of the phase conductor L 1 and the neutral conductor N, which are arranged between the contact arrangement 3 and the consumer connections 8. This ensures that the heating resistor 11 heats only when the residual current circuit breaker is switched on. This embodiment is used above all where - as in some interiors - there is no particularly aggressive atmosphere.
- the Heating resistor can be fed independently of the mains. This keeps the residual current circuit breaker even with longer downtimes of the network even in aggressive Atmosphere a high degree of operational safety.
- the heating resistor 11 is connected between sections of the phase conductor L 1 and the neutral conductor N, which are arranged between the contact arrangement 3 and the mains connections 7.
- the heating resistor 11 now heats both when the residual current circuit breaker is switched on and when it is switched off.
- This embodiment is used above all where the network is practically permanently under voltage and where - as at sea or near the sea - there is an aggressive atmosphere.
- the heating resistor 11 is connected between sections of the phase conductor L 1 and the neutral conductor N, which are arranged between the contact arrangement 3 and the mains connections 7.
- the heating resistor 12 is provided, which is connected between sections of the phase conductor L 1 and the neutral conductor N, which are located between the contact arrangement 3 and the consumer connections 8.
- This embodiment is characterized in that the interior of the housing is permanently heated. Even if the mains connections 7 and the consumer connections 8 are interchanged when the residual current circuit breaker is installed, and the residual current circuit breaker is open, heating power is available from the mains, since the heating resistor 12 is then under mains voltage.
- the heating resistor 11 is in series with an im Test circuit lying auxiliary contact of the contact arrangement 3 switched. At open residual current circuit breaker, the heating resistor 11 is then switched off. The auxiliary contact, which is present anyway because of the test circuit Contact arrangement 3 is then used to open the heating resistor 11 switch off the contact arrangement 3. In contrast to the embodiment according to Fig.1, this shutdown process is independent of the power supply, d. H. it can both via the network connections 7 or via the consumer connections 8 be fed. When installing the residual current circuit breaker in a system Therefore, the network connections 7 and the consumer connections 8 can be interchanged without affecting the heating times of resistor 11.
Landscapes
- Breakers (AREA)
- Emergency Protection Circuit Devices (AREA)
- Thermally Actuated Switches (AREA)
- Keying Circuit Devices (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Vehicle Body Suspensions (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
Description
- 1
- Gehäuse
- 2
- Aktivteil
- 3
- Kontaktanordnung
- 4
- Summenstromwandler
- 5
- Magnetauslöser
- 6
- Schaltschloss
- 7
- Netzanschlüsse
- 8
- Verbraucheranschlüsse
- 9
- Prüfwiderstand
- 10
- Prüfkontakt
- 11, 12
- Heizwiderstände
- L1, L2, L3
- Phasenleiter
- N
- Neutralleiter
Claims (9)
- Fehlerstrom―Schutzschalter mit einem Gehäuse (1) und einem im Gehäuse (1) angeordneten, ein- oder mehrphasig ausgebildeten Aktivteil (2), welches über Netzanschlüsse (7) mit einem Niederspannungsnetz und über Verbraucheranschlüsse (8) mit einem Verbraucher verbindbar ist und welches mindestens eine Kontaktanordnung (3), einen magnetisch wirkenden Fehlerstromauslöser (5), ein Schaltschloss (6) und einen Prüfstromkreis mit einem Prüfwiderstand (10) enthält, dadurch gekennzeichnet, dass im Gehäuse (1) mindestens ein Heizelement vorgesehen ist.
- Fehlerstrom―Schutzschalter nach Anspruch 1, dadurch gekennzeichnet, dass das mindestens eine Heizelement als Heizwiderstand (11, 12) ausgebildet ist.
- Fehlerstrom―Schutzschalter nach Anspruch 2, dadurch gekennzeichnet, dass der Heizwiderstand (11, 12) als PTC-Widerstand ausgeführt ist.
- Fehlerstrom―Schutzschalter nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass der Heizwiderstand (11, 12) netzunabhängig speisbar ist.
- Fehlerstrom―Schutzschalter nach einem der Ansprüche 2 oder 3, dadurch gekennzeichnet, dass der Heizwiderstand (11, 12) zwischen einen Phasenleiter (L1, L3) und einen Neutralleiter (N) des Aktivteils (2) geschaltet ist.
- Fehlerstrom―Schutzschalter nach Anspruch 5, dadurch gekennzeichnet, dass der Heizwiderstand (11) zwischen Abschnitte von Phasen (L1)- und Neutralleiter (N) geschaltet ist, die zwischen der Kontaktanordnung (3) und den Netzanschlüssen (7) angeordnet sind.
- Fehlerstrom―Schutzschalter nach Anspruch 6, dadurch gekennzeichnet, dass ein weiterer Heizwiderstand (12) zwischen Abschnitte von Phasen (L1)- und Neutralleiter geschaltet ist, die zwischen der Kontaktanordnung (3) und den Verbraucheranschlüssen (8) angeordnet sind.
- Fehlerstrom―Schutzschalter nach Anspruch 5, dadurch gekennzeichnet, dass der Heizwiderstand (11) zwischen Abschnitte von Phasen (L1)- und Neutralleiter (N) geschaltet ist, die zwischen Kontaktanordnung (3) und Verbraucheranschlüssen (8) angeordnet sind.
- Fehlerstrom―Schutzschalter nach Anspruch 5, dadurch gekennzeichnet, dass der Heizwiderstand (11) in Serie zu einem im Prüfstromkreis liegenden Hilfskontakt der Kontaktanordnung (3) zwischen den Phasen (L1)- und den Neutralleiter (N) geschaltet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10005416 | 2000-02-08 | ||
| DE10005416A DE10005416A1 (de) | 2000-02-08 | 2000-02-08 | Fehlerstrom-Schutzschalter |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1124245A2 true EP1124245A2 (de) | 2001-08-16 |
| EP1124245A3 EP1124245A3 (de) | 2003-01-15 |
| EP1124245B1 EP1124245B1 (de) | 2005-12-21 |
Family
ID=7630149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01810042A Expired - Lifetime EP1124245B1 (de) | 2000-02-08 | 2001-01-17 | Fehlerstrom-Schutzschalter |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1124245B1 (de) |
| AT (1) | ATE313854T1 (de) |
| DE (2) | DE10005416A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021105956A1 (de) | 2021-03-11 | 2022-09-15 | Compleo Charging Solutions Ag | Versorgungsstation und Betriebsverfahren hierfür |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU652019B2 (en) * | 1991-01-16 | 1994-08-11 | Felten & Guilleaume Fabrik Elektrischer Apparate Aktiengesellschaft | Fault current circuit breaker |
| DE59400850D1 (de) * | 1993-08-31 | 1996-11-21 | Maier & Cie C | Fehlerstromgeschützte Steckdose |
| EP0641044B1 (de) * | 1993-08-31 | 1997-01-22 | CMC Carl Maier + Cie AG | Kontaktanordnung für eine fehlerstromgeschützte Steckdose |
| DE4405868A1 (de) * | 1994-02-23 | 1995-08-24 | Abb Patent Gmbh | Fehlerstromschutzschalter |
| DE19838589A1 (de) * | 1998-08-25 | 2000-03-02 | Siemens Ag | Verfahren zum Schützen einer Fehlerstromschutzeinrichtung oder einer Differenzstromschutzeinrichtung beiaggressiven Umgebungsbedingungen und entsprechende Fehlerstromschutzeinrichtung oder Differenzstromschutzeinrichtung |
-
2000
- 2000-02-08 DE DE10005416A patent/DE10005416A1/de not_active Withdrawn
-
2001
- 2001-01-17 AT AT01810042T patent/ATE313854T1/de active
- 2001-01-17 EP EP01810042A patent/EP1124245B1/de not_active Expired - Lifetime
- 2001-01-17 DE DE50108419T patent/DE50108419D1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1124245A3 (de) | 2003-01-15 |
| ATE313854T1 (de) | 2006-01-15 |
| EP1124245B1 (de) | 2005-12-21 |
| DE50108419D1 (de) | 2006-01-26 |
| DE10005416A1 (de) | 2001-08-09 |
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