PSC 113.0701(10)(10)“Service voltage” means the steady state voltage at the point of service.
PSC 113.0701 HistoryHistory: Cr. Register, July, 2000, No. 535, eff. 8-1-00; correction in (intro.) made under s. 13.93 (2m) (b) 7., Stats., Register, January, 2001, No. 541; CR 02-027: am. (1), (2), (4) and (6) to (8), Register December 2002 No. 564, eff. 1-1-03.
PSC 113.0702PSC 113.0702Standard and maintenance of a service voltage. Each utility shall adopt standard nominal service voltages for each of the several areas into which the distribution system or systems may be divided and shall file with the commission a statement of the standard voltages adopted. The service voltage shall be reasonably constant within the following limits:
PSC 113.0702(1)(1)For all retail service, except retail power service, the service voltage shall not vary by more than 5% above or below the standard voltage.
PSC 113.0702(2)(2)For retail power service furnished to customers having demands of 500 kilowatts or less, the service voltage shall be no more than 5% above or 10% below the standard nominal voltage.
PSC 113.0702(3)(3)For retail power service furnished to customers having demands of more than 500 kilowatts, the service voltage shall not vary by more than 10% above or 10% below the standard nominal voltage.
PSC 113.0702(4)(4)For polyphase voltage unbalance issues, ANSI C.84.1-1989 Appendix D is the reference that will be followed. The utility and its customers may agree to not be constrained to the reference if it is economically beneficial to the customer.
PSC 113.0702(5)(5)For service rendered to public utilities and others for resale the standard nominal voltage shall be as mutually agreed upon by the parties concerned. If no formal agreement exists, the standard nominal voltage shall vary by no more than 10% above or below the secondary nominal voltage.
PSC 113.0702(6)(6)The variation in service voltage referred to in subs. (1) to (3) inclusive shall refer to a steady state voltage.
PSC 113.0702(7)(7)Upon customer request, the utility shall investigate line voltage variations and disturbances, associated with voltage sags, swells and transients, at the point of service. Requests for tests may be limited in availability, number or frequency for the same customer at the same location where previous tests have indicated that the variations and disturbances are within acceptable industry limits. The utility may establish rules for certain customers to decrease the incidents of these variations and disturbances as seen by other customers.
PSC 113.0702 HistoryHistory: Cr. Register, July, 2000, No. 535, eff. 8-1-00.
PSC 113.0703PSC 113.0703Variations of voltage.
PSC 113.0703(1)(1)Service interruptions, or voltage sags, swells and transients caused by the action of the elements, temporary separation of parts of the system from the main system, infrequent or unavoidable fluctuations of short duration, equipment failure, normal system operations necessary operations to safeguard employees or the general public, or other causes beyond the control of the utility shall not be considered a violation of these rules.
PSC 113.0703 NoteNote: Voltage fluctuations, transients, sags and swells may affect the performance of certain types of equipment or operations and should be considered by the customer. Customers having equipment or operations that are sensitive to such voltage fluctuations, or that require service other than that specified by these rules may find it necessary to install, at their own expense, power conditioning equipment or other modifications to protect, mitigate or otherwise provide the type of service needed.
PSC 113.0703(2)(2)In order to limit the impact of voltage variations, utilities may establish starting and operating criteria for equipment on customer premises. Customer loads shall be sized and operated in accordance with such criteria.
PSC 113.0703(3)(3)If procedures for voltage reduction during emergency operating conditions have been filed with and accepted or approved by the commission, variations of voltage in excess of those specified in ss. PSC 113.0702 and 113.0703, resulting from implementation in accordance with the specified procedures, shall not be considered a violation of these rules.
PSC 113.0703 HistoryHistory: Cr. Register, July, 2000, No. 535, eff. 8-1-00.
PSC 113.0704PSC 113.0704Harmonics of 60 Hz voltage waves. Utilities shall make reasonable efforts to investigate equipment operating problems suspected to be associated with harmonic distortion of the 60 Hz voltage sinewave at the point of service. When the source of the harmonic distortion is determined to be equipment operated by a specific customer, the utility shall notify the customer and it shall be the customer’s responsibility to correct the problem. When corrective action is necessary, the guideline to be used is the 1992 IEEE Standard 519.
PSC 113.0704 NoteNote: See s. PSC 113.0201.
PSC 113.0704 HistoryHistory: Cr. Register, July, 2000, No. 535, eff. 8-1-00.
PSC 113.0705PSC 113.0705Power quality diagnostic services.
PSC 113.0705(1)(1)Each utility shall own or otherwise arrange to have available when needed, suitable monitoring equipment for surveying its system and the electrical system of its customers at the point of service for power quality problems; such as harmonic distortion, voltage sags and swells, transients and flicker; that may adversely affect or interfere with the overall adequacy of service to its customers. If the source of the power quality problem is determined to be equipment operated by a specific customer, the utility shall notify the customer and it shall be the customer’s responsibility to correct the problem. If the problem is caused by the utility delivery system operating outside the limits set forth in s. PSC 113.0702 the responsible utility shall correct the problem.
PSC 113.0705(2)(2)The utility and the affected and/or offending customer shall cooperate as necessary to promptly investigate, diagnose and resolve power quality complaints and problems. The utility shall share the results of its investigation with the affected and/or offending customer. If a utility offers power quality correction or mitigation services or equipment through a non-regulated affiliate or otherwise as a non-utility service, it may advise the customer of this option, but shall disclose the non-utility nature of this offering and that the customer is not obligated to take such services from the utility or its affiliate.
PSC 113.0705 HistoryHistory: Cr. Register, July, 2000, No. 535, eff. 8-1-00.
PSC 113.0706PSC 113.0706Check of standards by commission.
PSC 113.0706(1)(1)Each utility shall submit to a public service commission-approved calibration facility once each year a portable digital standard watthour meter and once each 2 years a portable digital indicating voltmeter or multimeter, unless waived by the commission under the provisions of s. PSC 113.0902 (1). Smaller Class C and D utilities, may be allowed to continue to use the older electromechanical portable watthour standard for a reasonable future time period, if so authorized by the commission.
PSC 113.0706 NoteNote: The rapid movement to the newer fully-electronic digital watthour standards by the measurement industry has limited a laboratory’s ability to get replacement parts needed to maintain and calibrate the older electromechanical standards. All utilities have been advised of the need to acquire electronic/digital standards when it is reasonably feasible to replace the older obsolete electromechanical standards.
PSC 113.0706(2)(2)Each utility shall be equipped with or otherwise arrange to have available when needed, portable digital indicating and recording voltmeters having internal memory channels of an accuracy and quantity sufficient to make a determination that the service voltage supplied to their customers complies with the requirements set forth in ch. PSC 113. This instrument shall be maintained with an error no greater than 0.8% of full scale.
PSC 113.0706 NoteNote: (1) Caution should be exercised in using digital meters in areas of high electrical fields such as in close proximity to substations, high voltage lines, transformers, regulators, etc., as unstable or erroneous readings may result.