page content text Input Power Wiring Diagrams (Option B) Smart Series ®
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OPTION B
380 – 415 VAC, Three-Phase, 5-Wire “Y” Power Distribution System
CAUTION NOTE: The voltages from line-to-line in this system are 380 to 415 volts. Severe damage to module and mainframe could result if this type of AC input system is connected to a mainframe wired as OPTION A. This type of power distribution is not found or is very uncommon in the United States but is the most common system found in many other countries worldwide.
WARNING: If export of this system is intended, make sure that wiring is reconfigured for the country where it is to be used.
Please note that the 380-415 Volt Power Distribution System is the same as the “Y” connection shown in OPTION A except for the voltage levels and the use of the MP/N to develop the 240 volt from the 380-415 volt system. Notice that all modules have one line connected to MP/N and the other side connected to one of the three phase lines.
Zone (1) is connected to Phase 1, which is supplied by R/L1 and MP/N. Zone (2) is connected to Phase 2, which is supplied by S/L2 and MP/N. Zone (3) is connected to Phase 3, which is supplied by T/L3 and MP/N. Zone (4) starts the sequence over again. It is connected to Phase 1 R/L1 and MP/N, etc.
Example:
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