20 : 10 : 39 : 01 . Definitions . Terms used in this chapter mean:

1. (1) "Ampere," a unit of measure of electrical current;
2. (2) "Cow contact current" or "Icc," the alternating current, 60 Hertz, root mean square, steady-state current measured through the shunt resistor;
3. (3) "Cow contact voltage" or "Vcc," the alternating current, 60 Hertz, root mean square, steady-state voltage measured across the shunt resistor;
4. (4) "Current," the flow or amount of electricity past any single point in a conductor or conductive element per unit of time;
5. (5) "Ground," the point of lowest potential for an electrical system;
6. (6) "Ishunt," the measurement of current across the shunt resistor;
7. (7) "Milliampere" or "mA," one one-thousandth of an ampere;
8. (8) "Ohm," the standard unit of electrical resistance;
9. (9) "Open circuit voltage" or "Voc," the difference of electrical potential between two terminals when disconnected from any circuit;
10. (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. (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. (12) "Remote reference electrode," a temporary point of measurement established by correct installation of a ground rod;
13. (13) "Resistance," an electrical quantity that quantifies the ability of a physical material to conduct or not conduct electricity;
14. (14) "Root mean square," a mathematical conversion used to equate alternating and direct currents and voltages on similar terms;
15. (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. (16) "Secondary system," the part of the electrical system on the customer's side of both the meter and transformer;
17. (17) "Service provider," any person, company, or other legal entity providing stray current or voltage testing, consulting, measurements, analysis services, construction, or hardware;
18. (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. (19) "Source resistance" or "Rsource," the portion of resistance in the circuit, other than the resistance of the shunt resistor;
20. (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. (21) "Voltage," the electrical quantity that describes the push or potential that electrical energy needs to flow in a circuit;
22. (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. (23) "Vshunt," the measurement of voltage across the shunt resistor.

Source: 42 SDR 174 , effective June 21 , 2016 .

General Authority: SDCL 49 - 47 - 2.

Law Implemented: SDCL 49 - 47 - 2 , 49 - 47 - 3 .