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SCHEDULE 3 - DISTRIBUTED ENERGY RESOURCES INTERCONNECTION PROCESS <br />connection. Figure 5 at the end of this document, shows a typical inverter interconnection. <br />(1) Inverter Certification Prior to installation, the inverter shall be Type-Certified for interconnection <br />to the electrical power system. The certification will confirm its anti- islanding protection and <br />power quality related levels at the Point of Common Coupling. Also, utility compatibility, electric <br />shock hazard and fire safety are approved through UL listing of the model. Once this Type <br />Certification is completed for that specific model, additional design review of the inverter should <br />not be necessary by the Area EPS operator. <br />(2) For three-phase operation, the inverter control must also be able to detect and separate for the <br />loss of one phase. Larger inverters will still require custom protection settings, which must be <br />calculated and designed to be compatible with the specific Area EPS being interconnected with. <br />(3) A visible disconnect is required for safely isolating the Distributed Generation when connecting <br />with an inverter. The inverter shall not be used as a safety isolation device. <br />(4) When banks of inverter systems are installed at one location, a design review by the Area EPS <br />must be performed to determine any additional protection systems, metering or other needs. The <br />issues will be identified by the Area EPS during the interconnection study process <br />337 <br />