Residual current protection device and electrical protection configuration for external actuation of an electromagnetic release

Patent metadata

Field	Value
Publication number	US-9899824-B2
Application number	US-201514607263-A
Country	US
Kind code	B2
Filing date	Jan 28, 2015
Priority date	Jan 28, 2014
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

A compact residual current protection device is connected to a circuit breaker or a load break switch for external tripping and includes a detection device for detecting a residual current and a tripping device which is actuable by the detection device for tripping the circuit breaker as a result of actuation by the tripping device. A connection device is connected to the tripping device for connecting a switching device. The detection device and the tripping device are constructed in such a way that the tripping device is able to be tripped through the connection device by the switching device independently of the detection device. An electrical protection configuration is also provided.

First claim

The invention claimed is:

1. An electrical protection configuration, comprising:
a circuit breaker; and
a residual current protection device connected to said circuit breaker, the residual current protection device including:
a detection device configured to detect a residual current;
a tripping device configured to be actuated by said detection device and to trip the circuit breaker as a result of said actuation of said tripping device; and
a connection device being connected to said tripping device and being configured to be connected to a switching device;
said detection device and said tripping device being constructed to permit said tripping device to be tripped through said connection device by the switching device independently of the detection device.

2. The electrical protection configuration according to claim 1 , which further comprises a housing, said detection device and said connection device being permanently disposed together in said housing.

3. The electrical protection configuration according to claim 1 , which further comprises a housing in which said connection device is permanently integrated.

4. The electrical protection configuration according to claim 1 , wherein said connection device includes two connections between which a preset voltage is constantly present during operation.

5. The electrical protection configuration according to claim 4 , wherein the detection device and said tripping device are constructed to trip said tripping device by a short circuit of said connections of said connection device.

6. The electrical protection configuration according to claim 1 , wherein said tripping device is a voltage release device.

7. The electrical protection configuration according to claim 1 , which further comprises cables connecting said tripping device to said connection device.

8. The electrical protection configuration according to claim 1 , which further comprises a housing of said residual current protection device, and a separate housing of said circuit breaker being form-lockingly connected to said housing of said residual current protection device.

9. The electrical protection configuration according to claim 8 , wherein said housing of said circuit breaker has a shaft in which said tripping device is fastened.

10. The electrical protection configuration according to claim 9 , wherein said tripping device is a module configured to be plugged into said housing of said circuit breaker.

Assignees

• Siemens Ag

Inventors

• Baumann Mathias
• Strassburger Michael

Classifications

• H02H3/00 Primary

  Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection (specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems H02H7/00; systems for change-over to standby supply H02J9/00 ){; integrated protection (for motors H02H7/0822)} · CPC title

• H01H2083/203

  with shunt trip circuits, e.g. NC contact in an undervoltage coil circuit · CPC title

• H01H83/144

  with differential transformer · CPC title

• H01H71/0228 Primary

  having provisions for interchangeable or replaceable parts · CPC title

• H01H83/04

  with testing means for indicating the ability of the switch or relay to function properly · CPC title