Indiana Administrative Code › Title 170 - INDIANA UTILITY REGULATORY COMMISSION › Article 4 - ELECTRIC UTILITIES › Rule 1 - Standards of Service › Section 1-7 - Meter testing equipment and facilities; reference and portable standards

Current through July 10, 2024
Authority: IC
				  8-1-1-3;
				  IC
				  8-1-2-4
Affected: IC
				  8-1-2-34;
				  IC
				  8-1-2-35;
				  IC
				  8-1-2-36
Sec. 7.
Meter Testing Equipment and Facilities.
(A) Standardizing Laboratory. Whenever any
				public utility is maintaining or shall hereafter establish and maintain a
				standardizing laboratory, periodic inspection by the commission may be made of
				the instruments and methods in use, and if instruments and methods are
				acceptable to the commission after such inspection, certification of meters and
				instruments for such utility's own use and for other public utilities may be
				made by such laboratory.
(B)
				Equipment and Facilities. Each public utility shall provide or have available
				such standard meters, instruments and other equipment and facilities as may be
				necessary to make the tests required by these rules. Such equipment and
				facilities shall be subject to review by the commission, and shall be available
				at all reasonable times for the inspection by any authorized representative of
				the commission.
(C) Reference
				Standards. Each public utility shall provide or have available suitable
				indicating electrical instruments, wattmeters and watthour meters (hereinafter
				called "reference standards") as may be necessary for testing the accuracy of
				portable watthour standards and other portable instruments used for testing
				service meters. The reference standard may be a service type watthour meter,
				but if so, it shall be permanently mounted in the meter testing shop of the
				public utility and be used for no other purpose than for checking portable
				watthour meter standards. Reference standards of all kinds shall be tested and
				adjusted, if necessary, at least once every two years by a recognized
				standardizing laboratory with equipment as required in part (A) or (B) of this
				rule
[this section]
.
(D) Portable Standards. All portable watthour
				meter standards shall be checked against the corresponding reference standards
				as often as may be necessary to give reasonable assurance that the errors will
				not change enough between successive calibrations to materially affect the
				results of measurements involving their use. If such check shows any portable
				watthour meter standard to be in error more than one per cent (1%) plus or
				minus, at any load at which the standard will be used, the standard shall be
				tested, adjusted and certified in the laboratory of the public utility, or in
				some other approved laboratory, unless calibration correction is used. Each
				portable watthour meter standard shall at all times be accompanied by a
				certificate or calibration card, signed by the proper authority, giving the
				date when it was last certified.
(E) Portable Indicating Instruments. All
				portable indicating electrical testing instruments, such as voltmeters,
				ammeters and wattmeters, when in regular use in testing purposes, shall be
				checked against suitable reference standards as often as may be necessary to
				give reasonable assurance that the errors will not change enough between
				successive calibrations to materially affect the results of measurements
				involving their use, and if found appreciably in error at zero of more than one
				per cent (1%) of full scale value at commonly used scale deflection shall,
				unless calibration correction is used, be adjusted and certified in some
				approved laboratory.
(F) Records of
				certification and calibration. Records of certification and calibration shall
				be kept on file in the office of the public utility.