Emerson 30-130 kVA installation manual Odwhuvhfwlrqv

Figure 4 Grounding Diagram, A/B or G/H UPS Models, Wye Source, 3-Wire Loads

7.1Grounding for A/B or G/H UPS Models, Wye Source, 3-Wire Loads

$￿FRPPRQ￿FRQILJXUDWLRQ￿RI￿1SRZHU￿836￿LV￿ZLWK￿￿￿￿￿9$&￿LQSXW￿￿￿￿￿￿9$&￿RXWSXW￿￿DQG￿D￿FRQQHFWHG￿ ORDG￿FRQVLVWLQJ￿RI￿RQH￿RU￿PRUH￿3RZHU￿'LVWULEXWLRQ￿8QLWV￿￿3'8V￿￿ZLWK￿LVRODWLRQ￿WUDQVIRUPHUV￿LQ￿WKH￿ 3'8V￿WR￿SURGXFH￿￿￿￿￿9$&￿￿)RU￿&DQDGLDQ￿FXVWRPHUV￿￿WKH￿836￿PRGXOHV￿XVXDOO\￿KDYH￿￿￿￿￿9$&￿LQSXW￿

DQG￿RXWSXW￿￿7KH￿VDPH￿SULQFLSOHV￿DSSO\￿LI￿WKH￿FRQQHFWHG￿ORDG￿LV￿DQ￿LVRODWLRQ￿WUDQVIRUPHU￿IHHGLQJ￿YDU￿ LRXV￿ORDGV￿￿)LJXUH ￿￿DERYH￿VKRZV￿D￿W\SLFDO￿LQVWDOODWLRQ￿￿

1RWLFH￿WKDW￿WKH￿836￿LQSXW￿LV￿FRQQHFWHG￿WR￿D￿JURXQGHG￿Z\H￿VHUYLFH￿￿,Q￿WKLV￿FRQILJXUDWLRQ￿￿WKH￿FULWLFDO￿ ORDG￿GRHV￿QRW￿UHTXLUH￿D￿QHXWUDO￿IURP￿WKH￿836￿￿+RZHYHU￿￿WKH￿836￿QHXWUDO￿LV￿VROLGO\￿FRQQHFWHG￿WR￿WKH￿ VHUYLFH￿HQWUDQFH￿QHXWUDO￿￿DQG￿WKHUH￿LV￿QR￿QHXWUDO￿WR￿JURXQG￿ERQG￿DW￿WKH￿836￿￿7KH￿LQVWDOOLQJ￿FRQ￿ WUDFWRU￿PXVW￿EULQJ￿D￿QHXWUDO￿FRQGXFWRU￿IURP￿WKH￿VHUYLFH￿HQWUDQFH￿WR￿WKH￿836￿QHXWUDO￿

7KH￿LVRODWLRQ￿WUDQVIRUPHU￿LQ￿WKH￿3'8￿LV￿D￿VHSDUDWHO\￿GHULYHG￿VRXUFH￿￿7KHUHIRUH￿WKH￿3'8￿QHXWUDO￿ VKRXOG￿EH￿ERQGHG￿WR￿WKH￿3'8￿JURXQG￿WHUPLQDO￿DQG￿FRQQHFWHG￿WR￿D￿ORFDO￿JURXQGLQJ￿HOHFWURGH￿LQ￿FRP￿ SOLDQFH￿ZLWK￿1(&￿￿

7KLV￿836￿V\VWHP￿PD\￿LQFOXGH￿D￿0DLQWHQDQFH￿%\SDVV￿&DELQHW￿￿7KH￿0DLQWHQDQFH￿%\SDVV￿&DELQHW￿ QHXWUDO￿ZLOO￿EH￿VROLGO\￿FRQQHFWHG￿WR￿WKH￿836￿RXWSXW￿QHXWUDO￿￿ZKLFK￿ZLOO￿EH￿VROLGO\￿FRQQHFWHG￿WR￿WKH￿

VHUYLFH￿HQWUDQFH￿QHXWUDO￿

127(6￿

8QJURXQGHG￿DQG￿FRUQHU￿JURXQGHG￿GHOWD￿VRXUFHV￿UHTXLUH￿WKDW￿WKH￿1SRZHU￿EH￿ IXUQLVKHG￿IURP￿WKH￿IDFWRU\￿ZLWK￿DQ￿,VRODWHG￿/RDG￿1HXWUDO￿￿DV￿GHVFULEHG￿LQ￿

ODWHU￿VHFWLRQV￿￿

14 Configuring Your Neutral and Ground Connections