Electric Meter CL Rating

Discussion in 'General Electronics Chat' started by Management, Jan 10, 2012.

  1. Management

    Thread Starter Active Member

    Sep 18, 2007
    306
    0
    When an electric meter is advertised as having different models for CL 20/100/200/320. What does each number mean? Is it current measuring capability?
     
  2. wmodavis

    Well-Known Member

    Oct 23, 2010
    737
    150
    From an article on testing meters here it looks like it is the MAX ampere rating also referred to as CLASS.



    1. [*]Each meter shall have the following information legibly marked on the front of the nameplate or register:
    (a) Manufacturers’ name or trademark, type designation, and serial number.
    (b) Voltage rating.
    (c) Test amperes (
    TA).
    (d) Maximum amperes (
    CL) {meter class}.
    (e) Watt-hour or disk constant (
    Kh) {expressed as watt-hours per revolution}.
    (f) Register ratio (
    Rr) and multiplier (if 10 or larger).
    (g) Frequency rating (
    Hz).
    (h) Number of meter stator(s) or elements (polyphase).
    (i) Ratio or rating of auxiliary devices.
     
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