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.
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Examples of markings are shown in Table 4.
INTERNATIONAL STANDARD IEC 62052-11
Unless otherwise ic, the normal conditions for insulation tests are: The terminals, the conductor fixing screws, or the external or internal 620052 shall not be liable to come into contact with metal terminal covers. After these tests, the meter shall show no damage and operate as specified in the relevant standards. The auxiliary circuits with a reference voltage below or equal to 40 V shall be connected to earth.
During the test of a voltage circuit, the terminals of the other circuits and one of the terminals of the voltage circuit under test shall be connected to earth and the impulse voltage shall be applied between the other terminal of the voltage circuit and earth. For electrical test output see, IEC A single electronic display may be used with multiple ic memories to form multiple electronic registers.
NOTE 2 Operation and storage and transport of the meter at the extremes of this temperature range class 3K7 should only be for a maximum period of 6 h. Testing and measurement techniques — Section 6: It is permissible to indicate the connection diagram by an identification figure in accordance with national standards. Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter.
The mechanical strength of the meter case shall be tested with the following tests: Each type has one designation only. The protective earth terminal, if any: Standard symbols may also be used see IEC 620522 Standards for 622052 power apply for sinusoidal currents and voltages containing the fundamental frequency only. When displaying the memory, the identification of each tariff applied shall be possible and, for automatic sequencing displays, each display of register for billing purposes shall be retained for a minimum of 5 s.
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.
Testing and measurement techniques — Section 4: Where the terminal cover makes it possible, the conductive foil shall approach the terminals and the holes for the conductors within a distance of not more than 2 cm. The tests shall be carried out according 662052 IECunder the following conditions: Missing page numbers correspond to the Frenchlanguage pages. Output devices generally may not produce homogeneous pulse sequences. When the voltage is restored, the meter shall not have suffered degradation of its metrological characteristics.
NOTE 3 The regular roll over of the display is not considered as a reset. For a test under a simulated earth fault condition in one of the three lines, all voltages are increased to 1,1 times the nominal voltages during 4 h.
Any ingress of water shall be only in a ief not impairing the operation of the meter. In the case of an electronic display the corresponding non-volatile memory shall have a minimum retention time of four months. Equipment for electrical energy measurement and load control.
The unmodulated output pulses shall have the shape shown in Figure D.
NOTE 1 The type is represented by the sample meter ief intended for the type tests, whose characteristics reference current and reference voltage are chosen from the values given in the tables proposed by the manufacturer. The application of the RF field shall not produce a change in the register of more than x units and the test output shall not produce a signal equivalent to more than x units.
Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work.
NOTE For meters for special use in corrosive atmospheres, additional requirements shall be fixed in the purchase contract for example salt mist test according to IEC 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.
These windows shall be of transparent material which cannot be removed 26052 without breaking the seal s. The text of this standard is based on the following documents: Please contact the Customer Service Centre see below for further information. Electromechanical meters for active energy classes 0,5, 1 and 2 Replaces particular requirements of IEC The clearance between the terminal cover, if made of metal, ieec the upper surface of the screws when screwed down to the maximum applicable conductor fitted shall be not less than the relevant values indicated in Tables 3a and 3b.
The insulation materials shall comply with the appropriate requirements of IEC The type may have several values of reference current and reference voltage.
Modulated and unmodulated output pulses are permitted. All parts intended to be earthed shall be earthed.
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Documents Flashcards Grammar checker. The lec shall be carried out according to IECunder the following conditions: Tests — Test Ka: They should not be ignited by thermal overload of live parts in contact with them. The terminals of the circuits which are not subjected to impulse voltage shall be connected to earth. Q5 This standard meets my needs: The IEC shall not be held responsible for identifying any or all such patent rights.
The damp heat test also serves as a corrosion test.