IEEE C62.1-1989 pdf free.IEEE Standard for Gapped Silicon-Carbide Surge Arresters for AC Power Circuits.
IEEE C62.1 Tests made by the manufacturer on every device or representative samples, or on parts or materials, asrequired, to verify that the product meets the design specifications.
sparkover: A disruptive discharge between electrodes of a measuring gap, voltage-control gap, or protective device.series gap: An intentional gap(s) between spaced electrodes: it is in series with the valve element of the arrester,substantially isolating the element from line or ground, or both, under normal line-voltage conditions.
surge: A transient wave of current, potential, or power in an electric circuit.
surge arrester: A protective device for limiting surge voltages on equipment by discharging or bypassing surgecurrent; it prevents continued flow of follow current to ground, and is capable of repeating these functions as specified.NOTE — Hereafter, the term arrester as used in this standard shall be understood to mean surge arrester.
system (circuit) voltage: The root-mean-square power-frequency voltage from line to line as distinguished from thevoltage from line to neutral.
terminals: The conducting parts provided for connecting the arrester across the insulation to be protected.
time to impulse sparkover: The time between virtual zero of the voltage impulse causing sparkover and the point onthe voltage wave at which sparkover occurs.
unit operation: Discharging a surge through an arrester while the arrester is energized.valve arrester: An arrester that includes a valve element.valve element: A resistor that, because of its nonlinear current-voltage characteristic, limits the voltage across thearrester terminals during the flow of discharge current and contributes to the limitation of follow current at normalpower-frequency voltage.vent: An intentional opening for the escape of gases to the outside.
voltage rating: The designated maximum permissible operating voltage between its terminals at which an arrester isdesigned to perform its duty cycle. It is the voltage rating specified on the nameplate.
wave: The variation with time of current, potential, or power at any point in an electric circuit.wave front (of a surge or impulse): That part which occurs prior to the crest value.
wave tail (of an impulse): That part between the crest value and the end of the impulse.IEEE C62.1 pdf download,