IEEE C62.62-2000 pdf download
IEEE C62.62-2000 pdf download.IEEE Standard Test Specifications for Surge-Protective Devices forLow-Voltage AC Power Circuits.
3.19 impulse sparkover volt-time characteristic: The sparkover response of a gap-type surge-protective device, when subjected to voltage impulses that have varying magnitudes and specified wave shape and polarity.
3.20 impulse withstand voltage: The crest value of an impulse that, under specified conditions, can he applied without causing a disruptive discharge.
3.21 indoor surge-protective device: A surge-protective device that, because of its construction, shall he protected from the weather.
3.22 insulation resistance: The resistance, measured at a specified dc voltage, between any specified exposed conductive surface or line terminal (including ground) and one or more of the other line terminals of the device.
3.23 leakage current: The current flowing in the equipment-grounding conductor (including a conductive case) when the device is connected as intended to the energized power system at rated voltage.
3.24 lightning: An electric discharge that occurs in the atmosphere between clouds or between clouds and ground.
3.25 maximum continuous operating voltage (MCOV): The max i mum designated root-mean-square value of power frequency voltage that may he applied continuously between the terminals of the overvoltage protective device.
3.26 maximum (highest) system voltage: The highest voltage at which a system is operated.
3.27 multi-terminal surge-protective device: A protective device that has three or more terminals, usually containing both series and parallel elements between the terminals.
3.28 nominal rate of rise (of an impulse wavefront): The slope of the line that determines the virtual zero. It is usually expressed in volts or amperes per microsecond.
3.29 nominal system voltage: A nominal value assigned to designate a system of a given voltage class.
3.30 operating duty cycle: One or more unit operations, as specified.
3.31 oscillatory surge: A surge that includes both positive and negative polarity values.
3.32 outdoor surge-protective device: A surge-protective device that is designed for outdoor use.
3.33 performance characteristics: The parameters that are essential to describe the behavior or applicability of the device under specified conditions of operation.
3.34 power-frequency overvoltage: A root-mean-square voltage in excess of the maximum (highest) system voltage that lasts longer than one cycle.
3.35 power-frequency sparkover voltage: The root-mean-square value of the lowest power-frequency sinusoidal voltage that will cause sparkover when applied across the terminals of a surge-protective device.
3.36 power-frequency withstand voltage: A specified root-mean-square test voltage, at a power frequency that will not cause a disruptive discharge.
3.37 rated peak single-surge transient current: The maximum peak current that may he applied for a single impulse (with rated line voltage also applied) without causing device failure.
3.38 rated single-surge transient energy: Energy that may he dissipated in a surge-protective device for a single impulse of maximum rated current at a specified waveshape, with rated root-mean-square voltage or rated dc voltage also applied, without causing device failure.
3.39 rated standby power dissipation: The power dissipated in a protective device while connected to an ac line that has a voltage and frequency equal to the rating of the device and that has no load current flowing and no surges applied.
3.40 rating: The designation of an operating limit for a device.
3.41 recovery voltage: The voltage that occurs across the terminals of a pole of a circuit-interrupting device upon the interruption of the current.
3.42 repetitive surge and follow-current withstand: The number of surges of specified voltage and current amplitudes and waveshapes that may be applied to a device without causing degradation beyond specified limits. The repetitive surge and follow-current withstand ratings apply to a device connected to an ac line of specified characteristics and to pulses applied at specified rates and phase angles. The effects of any cumulative heating that may occur are included.
3.43 ring wave: (1(X) kHz ring wave). An open-circuit voltage wave characterized by a rapid rise to a defined peak value, followed by a damped oscillation.
3.44 routine tests: Test made by the manufacturer on every device, or representative samples, or on parts or materials, as required, to verify that the product meets the design specifications.
3.45 series gap: An intentional gap(s) between spaced electrodes. The gap is in series with the valve or expulsion element of the protective device, substantially isolating the element from line or ground, or both, under normal line-voltage conditions.
3.46 service voltage: The root-mean-square phase-to-phase or phase-to-neutral voltage at the point where the electrical system of the supplier and the user are connected.
3.47 sparkover: A disruptive discharge between electrodes of a measuring gap. voltage-control gap, or protective device.
