1.1 This Standard specifies the technical requirements for the interconnection of distributed resources (DR) and distribution systems up to 50 kV line to line. This Standard covers all distributed resource technologies with an aggregate capacity of 10 MW or less at the point of common coupling (PCC).
1.2 This Standard does not define the maximum DR capacity or the upper voltage limit for installations that are interconnected with a single PCC or connected to a given feeder.
1.3 This Standard covers the interconnection of (a) inverter-based DR systems and distribution systems where the PCC is at medium voltage; and (b) generator-based DR systems and distribution systems where the PCC is at low or medium voltage. See CAN/CSA-C22.2 No. 257 for interconnections of inverter-based DR systems and distribution systems where the PCC is at low voltage.
1.4 The objective of this Standard is to specify minimum requirements for the (a) safety of persons; (b) continuity of service; and (c) protection of property.
1.5 This Standard does not apply to secondary network connections and does not address (a) protection of the power producer's facility; (b) operating requirements for DR units; (c) intentional islanding; (d) transmission system impact and upgrades; (e) planning, design, or operation of the distribution system or DR system; (f) metering, rates, tariffs, and other contractual or commercial issues associated with interconnection; or (g) interconnection of distributed resources and distribution systems that are not ultimately connected to a province-wide or regional electricity grid (i.e., remote locations).