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.
The r.m.s. value is the parameter which relates alternating to direct current. The r.m.s. value of an alternating current represents the direct current value that causes the same thermal effects in the same period of time. For example, a direct current of Figure 2 Periodic waveform Figure 3 R.m.s. value (value of the equivalent direct current)
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