20:10:39:35Data

collection for the 48 hour test. A digitizing data recorder, with averaging capability and capable of detecting and recording transient deviations of one-tenth of a second or less in duration, is used to record the following: (1) Voltage from primary neutral at the transformer to the remote reference electrode; (2) Voltage from secondary neutral in the service panel serving the area of the cow contact point to the remote reference electrode; (3) Voltage from primary neutral at the transformer to secondary neutral at the service panel serving the area of cow contact; and (4) Cow contact current through or voltage across a shunt resistor at each high voltage point found in the cow contact test. A recording interval of not more than ten seconds may be used if the transient deviations of voltage or current are one-tenth of a second or less in duration and are recorded to the maximum ability of the instrument.

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