Nerc maintenance guidelines for distribution class CT's and VT's?

[OffTap100]

Does NERC specify performance or interval maintenance guidelines for Distribution class current and voltage transformers?

I have done quite a bit of searching in the NERC documents, and can not find this.


OFFTAP

 

[thermionic1]

PRC-005-6 makes it pretty clear you dont have to do anything:

"Standard PRC-005-6 – Protection System, Automatic Reclosing, and Sudden Pressure Relaying Maintenance
A. Introduction
1. Title: Protection System, Automatic Reclosing, and Sudden Pressure Relaying Maintenance
2. Number: PRC-005-6
3. Purpose: To document and implement programs for the maintenance of all
Protection Systems, Automatic Reclosing, and Sudden Pressure Relaying affecting the reliability of the Bulk Electric System (BES) so that they are kept in working order."

In a distribution station that has BES elements, such as a HV power transformer, the Sudden pressure relay system has to be maintained.

 

[OffTap100]

thermionic1- Thank you.

But since we fall under this category, do we not have to comply in some manner? Provide our maintenance program,,even for instrument transformers at distribution class?

Standard PRC-011-0 — UVLS System Maintenance and Testing

"B. Requirements
R1. The Transmission Owner and Distribution Provider that owns a UVLS system shall have a
UVLS equipment maintenance and testing program in place. This program shall include:
R1.1. The UVLS system identification which shall include but is not limited to:
R1.1.1. Relays.
R1.1.2. Instrument transformers.
R1.1.3. Communications systems, where appropriate.
R1.1.4. Batteries.
R1.2. Documentation of maintenance and testing intervals and their basis.
R1.3. Summary of testing procedure.
R1.4. Schedule for system testing.
R1.5. Schedule for system maintenance.
R1.6. Date last tested/maintained.

 

[davidbeach]

The VTs used for UFLS and UVLS schemes at Distribution Level are subject to PRC-005. As far as I know the testing requirements are the same as they would be at higher voltages.

 

[OffTap100]

Thank you David.

That is the way I read it. But Management did not submit that in 2014?..and has not updated to include distro class vt's since.