Patent EA-001174-B1 (EA)
Title: Pull out electrical equipment
Inventor: WEYNACHTER LUC
IPC: H01H71/74
Filed: 1997-07-10
Abstract: 1. A draw-out electrical switchgear apparatus comprising: a fixed part (1) constituting a support and connected to an electrical power distribution system (4), a removable part (2) designed to be supported by the fixed part and comprising at least one electrical switchgear apparatus (7) designed to be connected to the electrical power distribution system via the fixed part, and a processing unit (10) associated to said electrical apparatus and receiving signals representative of electrical currents, and first connecting means (3, 8) designed to be easily connected and disconnected to connect the apparatus of the removable part (2) to the fixed part (1) and to the electrical power distribution system (4), wherein comprises  parameter setting means (18, 33) located in the fixed part to set parameters of the processing unit of the removable part, and connecting means (5, 14, 19, 20, 21, 22, 35, 36) to connect said parameter setting means of the fixed part to said processing unit of the removable part, wherein said parameter setting means supplies operating parameters to the processing unit. 2. The electrical switchgear apparatus according to claim 1 wherein said parameter setting means comprise first means for storing in memory. 3. The electrical switchgear apparatus according to claim 1 or 2 wherein said parameter setting means supply parameters representative of current thresholds and time delay values. 4. The electrical switchgear apparatus according to claim 2 or 3 wherein the processing unit supplies the first storage means with parameters to be stored in memory before disconnection of the first connecting means. 5. The electrical switchgear apparatus according to claims 1 to 4 wherein the processing unit comprises means for processing electrical protection functions. 6. The electrical switchgear apparatus according to claims 1 to 5 wherein said parameter setting means comprising an addressing means designed to be connected to a communication circuit (15, 16) and designed to be connected to the processing unit and to the communication network. 7. The electrical switchgear apparatus according to claim 6 wherein said communication circuit (15, 23) situated in the removable part (2). 8. The electrical switchgear apparatus according to claim 6 wherein said communication circuit (16) situated in the fixed part (1). 9. The electrical switchgear apparatus according to claim 6 wherein comprises a first communication circuit (23) situated in the removable part and connected to the processing unit and to the communication network (6) via connecting means (5, 14) which are easily connectable and disconnectable, a first addressing means (24) situated in the removable part and connected to the first communication circuit (23), supplying a first address to the first communication circuit, and a second addressing means (18) situated in the fixed part and designed to be connected to the first communication circuit (23) of the removable part, wherein said first addressing means (18) supplying a second address to the first communication circuit. 10. The electrical switchgear apparatus according to claim 6 wherein comprises a first communication circuit (23) situated in the removable part and connected to the processing unit and to the communication network (6) via connecting means (5, 14) which are easily connectable and disconnectable, wherein the first communication circuit (23) comprising a first and second address input, a first addressing means (24) situated in the removable part and connected to the first communication circuit (23), a second communication circuit (17) situated in the fixed part (1), connected to the communication network (6) and comprising an address output to be connected to the second address input of the first communication circuit (23), wherein the second communication curcuit (17) supplies the second address to the first communication circuit (23), and the second addressing means (18) situated in the fixed part and connected to the second communication circuit (17) of the fixed part, the second addressing means (18) supplying a third address to the second communication circuit. 11. The electrical switchgear apparatus according to claim 10 wherein the second address supplied by the second communication circuit to the first communication circuit is identical to the third address supplied to the second communication circuit by the second addressing means. 12. The electrical switchgear apparatus according to claims 9 to 11 wherein the first communication circuit (23) comprises a communication address and means (25-28) for initializing said communication address, the means for initializing the communication address in priority to a value equal to the value of the second address received on the second addressing input or, if the second address is not valid, to the value of the first address received on the first input. 13. The electrical switchgear apparatus according to claims 10 to 12 wherein comprising first status contacts situated in the fixed part and connected to the second communication circuit. 14. The electrical switchgear apparatus according to claims 10 to 13 wherein the first storage means is situated in the fixed part and connected to the second communication circuit. 15. The electrical switchgear apparatus according to claim 14 wherein the first storage means receives initial operating parameters from the communication network. 16. The electrical switchgear apparatus according to claims 2 to 15 wherein the first storage means store operating parameters in memory at each setting of the processing unit by processing unit setting means. 17. The electrical switchgear apparatus according to claims 9 to 16 wherein comprising second status contacts situated in the removable part and connected to the first communication circuit. 18. The electrical switchgear apparatus according to claims 9 to 17 wherein comprising second storage means situated in the removable part and connected to the first communication circuit. 19. The electrical switchgear apparatus according to claims 1 to 18 wherein the removable part is a circuit breaker of draw-out type. 20. A method for initializing the communication circuit in an electrical switchgear apparatus according to claims 9 to 19 wherein said first communication circuit  in a first step reads the value of the second address, in a second step checks the validity of the second address,  in a third step loads a communication address with the value of the second address if said second address is valid, in a fourth step reads the value of the first address if the second address is not valid, and in a fifth step loads the communication address with the value of the first address. 21. A method of the processing unit operation in an electrical switchgear apparatus according to claims 9 to 19 wherein said processing unit comprising means for  checking the parameters of the parameter setting means, receiving the operating parameters if said parameters are valid, operating using operating parameters, and storing the parameters in the parameter setting means.