Agenda Topics 9Am to 3:30Pm

Agenda Topics – 9am to 3:30pm

Motor Protection – Fundamentals & Integration to Communication Networks

 Motor history & facts  Step-by-step review of detailed  Motor failure rates setting example and how to put  Motor specifications (HP, service factor, settings into data sheet, etc.) GE Multilin motor relay  Risks for an overheated motor o CT rating, voltage sensing  Theory behind thermal o FLA & ground CT modeling/protection o Thermal model settings o Motor thermal limits & . Overload pickup, acceleration curves overload curve, unbalance o Motor thermal parameters bias K factor, hot/cold safe o Motor states (stopped, starting, stall ratio, running & stopped running, overloading) cooling time constants, RTD o Motor cooling bias/feedback o Thermal capacity used o Short circuit trip o Start inhibit o Current unbalance alarm & trip o Information required to set o Ground fault thermal model/protection o Acceleration trip o Long starts / large inertia loads o Start inhibit o Selection criteria of overload o Starts per hour, time between curve, overload pickup, hot/cold starts safe stall ratio, unbalance o RTD alarm & trip bias/feedback, RTD o Phase differential trip bias/feedback, cooling time o Undervoltage trip constants, voltage dependant o Overvoltage trip overload curve, custom overload curve  Review of how to integrate your motor relays into existing networks at the  Review of additional protection elements work place. (theory & setting recommendations) o RS485 to Ethernet converter o Short circuit trip o Ethernet switches o Ground fault o Monitoring & control software o Differential trip o Data integration via OPC server o Current unbalance & single o Automation projects phasing o Undervoltage & overvoltage  Review of how to integrate your protection motor relays into existing networks at the o Mechanical jam detection work place. o Undercurrent o Underpower o Acceleration timer

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