Operation OverviewEaton Advanced ePDU User’s Guide P-164000042—Rev 1 www.eaton.com/ePDU 37Three-Phase ConfigurationsThe type of ePDU input connector plug varies by model to accommodate different amperage ratings. TheIEC60309 connector plugs are configured as delta or wye topologies as follows:l The delta configuration uses a four-wire input connector plug with three phase wires, a protective earth(ground) wire, and no neutral wire. This is commonly expressed as 3W+PE (delta).l The wye configuration uses a five-wire input connector plug with three phase wires, a protective earth(ground) wire, and a neutral wire. This is commonly expressed as 3W+N+PE (wye).Table 5 shows examples and descriptions of delta and wye configuration codes.Environmental Protection and Pin AlignmentThe input connector plugs have Ingress Protection (IP) ratings that specify the degree of environmentalprotection for electrical equipment. The IEC60309 input connector plugs that are either splash resistant (S) orwaterproof (W).l Splash resistant plugs are IP-rated at IP 44, which means the plug is protected against solid objects lessthan 1.0 mm in diameter.l Waterproof plugs are IP-rated at IP 67, which means the plugs are watertight, splashproof, and dust tight.The pin alignment is different for four-wire (delta) and five-wire (wye) configurations. This orientation iscommonly expressed as a clock position. See Figure 28 for example clock positions.Figure 28. Example Clock PositionsTable 5. Example Three-Phase TopologiesCode4-pin Plug (delta) - 45-pin Plug (wye) - 5MaximumAmperage(A) RatingPlug (P)outlet/Socket (R) orConnector (C)Clock Position(6 or 9)Waterproof (W)orSplash Resistant (S)460P9W 4 60 P 9 W532P6S 5 32 P 6 SProtective Earth(Ground) L1L2L3L1L2L3NeutralProtective Earth(Ground)Delta, 4-pin plug Wye, 5-pin plugAlignment tabAlignment tab3W + PE 3W + N + PE9 o'clock6 o'clock
