Transcription of ABB circuit breakers for direct current applications
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ABB circuit breakers for direct current applications
ABB circuit breakers for direct current applicationsLow Voltage Products & Systems 1 ABB Inc. 888-385-1221 1 SXU210206G0201 Index1. Introduction ..2 2. Generalities on direct current ..3 - 4 3. applications Conversion of alternative energies into electrical energy ..5 Electric traction ..7 Supply of emergency services or auxiliary services ..8 Particular industrial applications ..84. Generation Storage batteries ..9 Static conversion ..10 Dynamo ..115. Interrupting direct current ..12 - 136. Types of DC networks Network insulated from ground ..14 - 15 Network with one terminal grounded ..16 - 17 Network with the middle point of the supply source connected to ground ..18 - 197. Choice of the protective device ..20 - 308. Use of alternating current equipment in direct current Variation of the magnetic field ..31 - 32 Connection of circuit breaker poles in parallel ..339. ABB offering circuit breakers .
The applications of circuit breakers in DC circuits for electric traction can be summarized as follows: • Protection and operation of both overhead and rail con-tact lines; • Protection of air compressors on board subway and train cars;
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