Section · Administrative Rules of South Dakota · View on sdlegislature.gov ↗
Terms used in this chapter mean: (1) "Ampere," a unit of measure of electrical current; (2) "Cow contact current" or "Icc," the alternating current, 60 Hertz, root mean square, steady-state current measured through the shunt resistor; (3) "Cow contact voltage" or "Vcc," the alternating current, 60 Hertz, root mean square, steady-state voltage measured across the shunt resistor; (4) "Current," the flow or amount of electricity past any single point in a conductor or conductive element per unit of time; (5) "Ground," the point of lowest potential for an electrical system; (6) "Ishunt," the measurement of current across the shunt resistor; (7) "Milliampere" or "mA," one one-thousandth of an ampere; (8) "Ohm," the standard unit of electrical resistance; (9) "Open circuit voltage" or "Voc," the difference of electrical potential between two terminals when disconnected from any circuit; (10) "Primary neutral to reference voltage" or "Vp," the voltage that exists between the primary grounding conductor point of an electrical system's utility transformer and a remote reference electrode; (11) "Primary system," the high voltage utility electrical system, including the generation, transmission, and distribution systems. The term also refers to the high voltage side of a distribution transformer; (12) "Remote reference electrode," a temporary point of measurement established by correct installation of a ground rod; (13) "Resistance," an electrical quantity that quantifies the ability of a physical material to conduct or not conduct electricity; (14) "Root mean square," a mathematical conversion used to equate alternating and direct currents and voltages on similar terms; (15) "Secondary neutral to reference voltage" or "Vs," the voltage that exists between the secondary grounding electrode or grounding conductor point of an electrical system's service entrance panel and a remote reference electrode; (16) "Secondary system," the part of the electrical system on the customer's side of both the meter and transformer; (17) "Service provider," any person, company, or other legal entity providing stray current or voltage testing, consulting, measurements, analysis services, construction, or hardware; (18) "Shunt resistor" or "Rshunt," a physical resistor or combination of resistors used to simulate a dairy cow during the measurement of cow contact voltage or cow contact current. A shunt resistor must be 500 Ohms, plus or minus two percent; (19) "Source resistance" or "Rsource," the portion of resistance in the circuit, other than the resistance of the shunt resistor; (20) "Transient deviation," a non-steady-state increase or spike in voltage or current. For the purpose of identifying and reporting transient deviations in cow contact voltage or cow contact current, a transient deviation occurs when the recorded maximum Vcc or Icc in a recording interval exceeds 200 percent of the steady-state Vcc or Icc recorded during the same recording interval; (21) "Voltage," the electrical quantity that describes the push or potential that electrical energy needs to flow in a circuit; (22) "Voltage drop," the difference in voltages when a current passes through a resistance or impedance in a closed loop circuit and a voltage drop is produced across that resistance or impedance; and (23) "Vshunt," the measurement of voltage across the shunt resistor.
Source: 42 SDR 174, effective June 21, 2016.