IEEE C62.50-2012 pdf download

01-14-2023 comment

IEEE C62.50-2012 pdf download IEEE Standard for Performance Criteria and Test Methods for Plug-in (Portable) Multiservice (Multiport) Surge- Protective Devices for Equipment Connected to a 120 V/240 V Single : Phase Power Service and Metallic Conductive Communication Line(s)
3. Definitions
For the purposes of this document, the following terms and definitions apply. The IEEE StandardsDictionary Online should be consulted for terms not defined in this clause.
available interrupting capacity (AIC): The highest rms current at the rated nominal system voltage of themultiservice surge protective device (MSPD) that the MSPD disconnector is capable of interrupting underspecified circuit power factor conditions.
disconnector (power SPD): Device for disconnecting a surge protective device (SPD), or part of an SPD.from the power system in the cvent of SPD failurc.(adapted from lEC 61643-11:2010 Ed 1.0)
NOTE 1–The disconnecting device is not required to have isolating capability for safety purposes. It is intended toprevent a persistent fault on the system and may give visible indication of the SPD failurc.
NOTE 2–Disconnectors can be internal (built in) or external (required by the manufacturer).
NOTE 3–There may be more than one disconnector function, for cxample an over-current protection function and athermmal protection function, These functions may be in scparate units.
ground surge current reduction ratio: Quotient of the peak surge current in a service or reference groundby the peak surge current in a ground loop formed by equipment connection and interconnection.
maximum continuous operating voltage (MCOV): The maximum designated root-mean-square (rms)value of the power frequency voltage that may be continuously applied to the mode of protection of a surgeprotective device (SPD).
measured limiting voltage (MLV): The maximum magnitude of voltage, measured at the leads, terminalsreceptacle contacts, and similar locations during the application of an impulse of specified waveshape andamplitude.
modes of protection: Electrical paths where the SPD offers defense against transient overvoltages
NOTE 1–For a single phase ac power SPD connecting to line, neutral, and ground conductors, the modes of protectioncan be line-to-neutral (L-N), line-to-ground (L-G) and neutral-to-ground (N-G).
NOTE 2-For poly-phase ac power SPDs connecting to line, neutral, and ground conductors, the modes of protectioncan be line-to-ncutral (L-N), line-to-ground (L-G), line-to-line (L-L), and neutral-to-ground (N-G).
multiservice (multiport) surge protective device (MSPD): A surge protective device providingprotection of cquipment connected to two or more services such as power, telecommunications. signaling.data, etc, with the respective conductors routed via a common enclosure in which an internal sharedground reference bond has been provided among these services during surge conditions.
NOTE_This standard considers one service will be ac power
nominal discharge current (/): Peak valuc of the current, selected by the manufacturer, through the SPDhaving a current waveshape of 8/20 where the SPD remains functional after 15 surges.
power line communication (PLC): Telecommunication using existing power line conductors.NOTE-Numerous other term synonyms and acronyms exist for PLC, such as broadband over power line carrier(BPL).

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