Ala. Admin. Code r. 770-X-3-.07

Current through Register Vol. 42, No. 12, September 30, 2024

Section 770-X-3-.07 - Meter Tests Prior To Installation

(1) All new watt-hour and demand meters shall be tested and adjusted to register accurately to within the limits specified in 770-X-3-.04 and 770-X-3-.05 before installation. Manufacturers' tests at factory on new meters with quality control and laboratory sample testing will be accepted in lieu of shop test prior to installation.

(2) Watt-hour meters that are to be used on circuits of low power factor (lagging current) shall be tested and adjusted before installation to register correctly to within two percent (2%) plus or minus, at a power factor of approximately fifty percent (50%), and at approximately one hundred percent (100%) of rated current.

(3) Instrument transformers shall be tested to determine their ratio and accuracies unless these tests have already been conducted by the manufacturer. All such calibration tests shall be made by a laboratory of recognized standing or by the utility using apparati and methods satisfactory to good engineering practice.

Ala. Admin. Code r. 770-X-3-.07

Effective January 1968. Amended October 1988. Amended February 1995. Amended November 2003. Filed with LRS February 5, 2013. Filed for Codification in the Alabama Administrative Code by the Alabama Public Service Commission on February 5, 2013, pursuant to Code of Ala. 1975, § 41-22-7.

Author: Alabama Public Service Commission

Statutory Authority:Code of Ala. 1975, §§ 37-1-32, 37-1-38, 37-1-53.