Safety

The technical specifications for, and testing of, the interconnection between utility electric power systems (EPS) and distributed energy resources (DER) are the focus of this standard. It provides requirements relevant to the performance, operation, testing, safety considerations, and maintenance of the interconnection. It also includes general requirements, response to abnormal conditions, power quality, islanding, and test specifications and requirements for design, production, installation evaluation, commissioning, and periodic tests.

The guide covers the application of metal-oxide surge arresters to safeguard electric power equipment, with a nominal operating voltage 1000 V and above, against the hazards of abnormally high-voltage surges of various origins. It also provides information on the characteristics of metal-oxide surge arresters and the protection of substation equipment, distribution systems, overhead lines, and large electrical machines.

This recommended practice provides the recommended procedures, methods, and documentation for commissioning and integrated testing of active and passive fire protection and life safety systems and their interconnections with other building systems.

(a) General requirements—(1) Batteries of the unsealed type shall be located in enclosures with outside vents or in well ventilated rooms and shall be arranged so as to prevent the escape of fumes, gases, or electrolyte spray into other areas.

(2) Ventilation shall be provided to ensure diffusion of the gases from the battery and to prevent the accumulation of an explosive mixture.

1.1 This Standard specifies the electrical requirements for safe interconnection of inverter-based micro-distributed resource (micro-DR) systems to low-voltage systems connected to distribution systems. The output of these systems is limited to 600 V (nominal) or less (single or three phase).
1.2 Intentional islanding conditions and interconnection to secondary networks are not covered in this Standard. Note: Inverter types and operating modes are provided in Annex F.

1.1 This Standard applies to single-phase and polyphase transformers of the dry type for supplying energy to power, heating, and lighting circuits and designed to be installed and used in accordance with the Canadian Electrical Code, Part I. 1.2 This Standard applies to multiwinding and autotransformers rated 72.5 kV class and less. 1.3 This Standard applies to transformers for use in nonhazardous indoor and outdoor locations.

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).

The Alberta Distributed Generation Interconnection Guide provides guidelines for connecting a generation facility to the Alberta Interconnected Electric System (AIES) via a Wires Owner’s distribution system, and assists in determining the technical and operating requirements of the facility. The Guide was developed by the Alberta Distributed Generation Technical and Policy Committee without regard to whether its adoption may involve patents on articles, materials or processes.

BC Hydro provides a means for distribution-connected customers to connect a small energy source to the BC Hydro Distribution System to offset their load and participate in the Net Metering program (RS1289) or other energy procurement offers. This document contains the technical interconnection requirements for connecting small generators to BC Hydro’s Distribution System. The total generation must have an aggregate nameplate rating of 100 kW or less. DGs with generation over this limit should refer to BC Hydro Interconnection Requirements for Power Generators 35 kV and Below.