INTERNATIONAL. STANDARD. IEC. First edition. Electricity metering equipment (a.c.) –. General requirements, tests and test conditions –. IEC ELECTRICITY METERING EQUIPMENT (A.C.) – GENERAL REQUIREMENTS, TESTS AND TEST CONDITIONS – PART METERING. Buy IEC Ed. Electricity metering equipment (AC) – General requirements, tests and test conditions Part Metering equipment from SAI Global.
|Published (Last):||13 February 2017|
|PDF File Size:||4.82 Mb|
|ePub File Size:||8.47 Mb|
|Price:||Free* [*Free Regsitration Required]|
Electrostatic discharge immunity test.
Any protective coating shall not be liable to damage by ordinary handling nor damage due to exposure to air, under normal working conditions. The maximum pulse frequency shall not exceed 2,5 620552. The appearance and, in particular, the legibility of markings shall not be altered. The protective earth terminal, if any: The contact with the glow wire may occur at any random location.
The distance of the optical pulse output from further adjacent ones or from an optical status display shall be sufficiently long that the transmission is not affected.
The register shall be able to record and display, starting from zero, for a iiec of 1 h, the energy corresponding to maximum current at reference voltage and unity power factor. During the test of a current circuit, the terminals of the other circuits shall be connected to earth and the impulse voltage shall be applied between one of the terminals of the current circuit and earth. NOTE Standards for reactive power apply for sinusoidal currents and voltages containing the fundamental frequency only.
INTERNATIONAL STANDARD IEC 62052-11
If the meter has a measuring element for more than one type of energy multi-energy metersor when other functional elements, such as maximum demand indicators, electronic tariff registers, time switches, ripple control receivers, data communication interfaces, etc. Specific terms according to the type of instrument IEC For example, edition numbers 1. If this is not possible reference shall be made to iev connection diagram. See also Annex B, Figure B.
The auxiliary circuits intended to be connected either directly to the mains or to the same voltage transformers as the meter circuits, and with a uec voltage over 40 V, shall be subjected to the impulse voltage test in the same conditions as those already given for voltage circuits. The manner of fixing 60252 conductors to the terminals shall ensure adequate and durable contact such that there is no risk of loosening or undue heating.
The unmodulated output pulses shall have the shape shown in Figure D. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. NOTE 3 The regular roll over of the display is not considered as a reset.
INTERNATIONAL STANDARD IEC
Hammer tests IEC Uec 1 Longer retention time of the non-volatile memory should be the subject of a purchase contract. The tests shall be carried out under the following conditions: The value x is derived from the following formula: Current transformers IEC Inductive voltage transformers IEC Any ingress of water shall be only in a quantity not impairing the operation of the meter.
The impulse voltage shall be applied between all the electric circuits and earth. Information under points ab and c may be marked on an external plate permanently attached to the meter cover. After the test, the meter shall show no damage or change of the information and shall operate correctly in accordance with the requirements of the relevant standard. The cover shall not be removable without the use of a tool.
The change of error measured when the meter is back at nominal working temperature shall not exceed the limits given in Table 8. These windows shall be of transparent material which cannot be removed undamaged without breaking the seal s. The rise time given in Annex D, Figure D. If the terminal block is integral with the meter base, it is sufficient to carry out the test only on the terminal 62502.
It generally comprises electromagnets with their control devices.
IEC | IEC Webstore | smart grid, smart meter, smart energy
In order to satisfy such requirements when choosing insulating materials for the terminal block sadequate testing of materials shall be taken into account.
The marking shall be indelible, distinct and legible from outside the meter. If such small parts are accessible by the standard test finger as specified in IEC from outside the case, then they shall be 62502 isolated from live parts by supplementary insulation against failure of basic insulation or loosening of live parts.
The function of the meter shall not be impaired. 60252 special application, other test levels might be necessary and should be agreed upon between the user and the manufacturer.
Salt mist IEC The insulating properties of laquer, enamel, ordinary paper, cotton, oxide film on metal parts, adhesive film and sealing compound, or similar unsure materials, shall not iiec regarded as sufficient ieec supplementary insulation.
The IEC collaborates closely with the International Organization for Standardization ISO in accordance with conditions determined by agreement between the two organizations. Collection of meter dependability data from the field This part is a standard for type testing electricity meters. During the test, a temporary degradation or loss of function or performance is acceptable, nevertheless the variation of the error shall be within the limits as specified in the relevant standard.
Standard symbols may also be used see IEC Plastic and ebonite 3 Terms and definitions For the purposes of this International Standard, the following definitions apply. The auxiliary circuits with a reference voltage below or equal to 40 V shall be connected to earth.