Code of Colorado Regulations
700 - Department of Regulatory Agencies
723 - Public Utilities Commission
4 CCR 723-3 - RULES REGULATING ELECTRIC UTILITIES
INTERCONNECTION PROCEDURES AND STANDARDS
Section 3857 - Certification Codes and Standards
Unless one or more of the following standards has been incorporated by reference into these interconnection rules, the Commission encourages the utilities and their interconnection customers, to whom these rules apply, to use the following standards and reference materials for guidance.
ANSI C84.1-2016 Electric Power Systems and Equipment - Voltage Ratings (60 Hertz)
ANSI/NEMA MG 1--2016, Motors and Generators
IEEE Std C37.90.1-2012, IEEE Standard Surge Withstand Capability (SWC) Tests for Protective Relays and Relay Systems
IEEE Std C37.90.2-2004, IEEE Standard Withstand Capability of Relay Systems to Radiated Electromagnetic Interference from Transceivers
IEEE Std C37.108-2002, IEEE Guide for the Protection of Network Transformers
IEEE Std C57.12.44-2014, IEEE Standard Requirements for Secondary Network Protectors
IEEE Std C62.41.2-2002/Cor 1-2012, IEEE Recommended Practice on Characterization of Surges in Low Voltage (1000V and Less) AC Power Circuits Corrigendum 1: Deletion of Table A.2 and Associated Text
IEEE Std C62.45-2002, IEEE Recommended Practice on Surge Testing for Equipment Connected to Low-Voltage (1000V and Less) AC Power Circuits
IEEE Std 100-2000, The Authoritative Dictionary of IEEE Standards Terms, Seventh Edition
IEEE Std 519-2014, IEEE Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems
IEEE Std 1453-2015 IEEE Recommended Practice for the Analysis of Fluctuating Installation on Power Systems
IEEE Std 1547-2018, IEEE Standard for Interconnection and Interoperability of Distributed Energy Resources with Associated Electric Power Systems Interfaces
IEEE Std 1547.1-2005, IEEE Standard Conformance Test Procedures for Equipment Interconnecting Distributed Resources with Electric Power Systems
NFPA 70 (2017), National Electrical Code
UL 1741 Inverters, Converters, and Controllers for Use in Independent Power Systems
UL 1741 SA, until January 1, 2022, or until such time new DERs applying for interconnection will comply with IEEE 1547-2018, IEEE Standards for Inverters, Converters, Controllers and Interconnection System Equipment for Use with Distributed Energy Resources
