GE 225 Installation Manual

Also see for GuardSwitch 300 Series: Instruction Instructions Instructions Installation instructions Installation guide

g GEOPM_SGS_ISG_M22_M30_0US_V011.doc 37/38 Installation Guide SG Series 225 & 300 kVA4.1.7 EPO (Emergency Power Off) Input contactSGS_225-300_Customer interface EPO_0143211234JP3XBJ2Fig. 4.1.7-1 Terminals for connection EPOAn external Emergency switch(Normally Closed voltage-freecontact) can be connected onterminals XB / 1 - 4 or connectorJ2 / 12 - 25 of the P4 - InterfaceCustomer.Remove the cable short-circuiting terminals XB 2 - 3)when using this external switch.To enable this function, remove cable short-circuiting XB / 2 - 3 on theTerminal XB and the Jumper JP3 on P4 – Customer Interface, when thecables have been already connected on XB or J2.In a parallel system a separate NC (Normally Closed) contact must beconnected individually to each unit.When opened, this contact causes the immediate opening of the Contactors K3, K4, K6, K7and K8, as well as the shutdown of Rectifier, Inverter and Static-Switch.Be aware: The reliability of the system depends on this contact!After closure of the Emergency contact, a reset is necessary to enable the restart ofthe UPS, by pressing the key “O” (inverter off) on the control panel.In case of a parallel system press the key “O” (inverter off) on thecontrol panel of each unit connected on parallel bus and having it’soutput switch Q1 closed.

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