// CODE SNIPPET
(2) Protective Relays
JUMP TO FULL CODE CHAPTER
Each protective relay shall be demonstrated to operate by injecting current or voltage, or both, at the associated instrument transformer output terminal and observing that the associated switching and signaling functions occur correctly and in proper time and sequence to accomplish the protective function intended.
Related Code Sections
(2) Wiring and Protection, Protective Relays
Each protective relay shall be demonstrated to operate by injecting current or voltage, or both, at the associated instrument transformer output ...
National Electrical Code 2020 of Minnesota > 2 Wiring and Protection > 225 Outside Branch Circuits and Feeders > 225.56 Inspections and Tests > (A) Pre-Energization and Operating Tests > (2) Protective Relays
(3) Wiring and Protection, Sizing
of the protective relay. Informational Note: The overcurrent rating for a circuit breaker is the combination of the current transformer ratio ...
National Electrical Code 2020 of Minnesota > 2 Wiring and Protection > 250 Grounding and Bonding > 250.190 Grounding of Equipment > (C) Equipment Grounding Conductor > (3) Sizing
(A) Wiring and Protection, Circuit Breakers
to be reconditioned. (B) Components. The use of reconditioned trip units, protective relays, and current transformers shall comply with (1) and (2 ...
National Electrical Code 2020 of Minnesota > 2 Wiring and Protection > 240 Overcurrent Protection > 240.88 Reconditioned Equipment > (A) Circuit Breakers
(A) Equipment for General Use, Constant-Voltage Generators
relays, or other identified overcurrent protective means suitable for the conditions of use ...
National Electrical Code 2020 of Minnesota > 4 Equipment for General Use > 445 Generators > 445.12 Overcurrent Protection > (A) Constant-Voltage Generators
(B) Special Equipment, Metal Enclosures Grounded
by either of the following means: Through protective relaying equipment By a minimum 2/0 AWG copper grounding electrode conductor or a conductor ...
National Electrical Code 2020 of Minnesota > 6 Special Equipment > 668 Electrolytic Cells > 668.11 Direct-Current Cell Line Process Power Supply > (B) Metal Enclosures Grounded