Buy DIN EN () Electricity Metering Equipment (a.c.) – Part 1: General Requirements, Tests And Test Conditions – Metering Equipment (class. BS EN Electricity metering equipment (a.c.). General requirements, tests and test conditions. Metering equipment (class indexes. Find the most up-to-date version of CEI EN at Engineering
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Any ingress of ej shall be only in a quantity not impairing the operation of the meter. The application of the surge immunity test voltage shall not produce a change in the register more than x units and the test output shall not produce a signal equivalent to more than x units. When displaying the contents of the memory iesthe clear and unambiguous identification of each value shall be possible and, for automatic sequencing displays, each display of register for billing purposes shall be retained for a minimum of 5 s.
For rack-mounted meters, the mechanical properties are not covered in this standard. During the test, the behaviour of the equipment shall not be perturbed and the additional percentage error shall not 5047-01 the critical change values specified in the relevant standards.
Dr [IEV modified] 3. The damp heat test also serves as a corrosion test. This standard distinguishes between: This standard distinguishes between: It is usually designed and operated to obtain the highest accuracy and stability in a controlled laboratory environment [IEC3.
It is advisable to choose the next number immediately above or below in order to have whole numbers of turns. Tests — Test Eh: After these tests, there shall be no change at reference conditions in the percentage error of the meter greater than the repeatability of 5047-01 measurement and no mechanical damage to the equipment.
Testing and measurement techniques — Power frequency magnetic ej immunity test IEC Allgemeine Anforderungen, Pruefungen und Pruefbedingungen. IP51, but without suction in the meter; IP The holes in the insulating material, which form an extension of the terminal holes, shall be of sufficient size to accommodate also the insulation of the conductors.
It also applies to operation indicator s and test output s. Meters are designated by the manufacturer by one or more groups of letters or numbers, or a combination of letters and numbers. The 3-layer, connection-oriented HDLC based communication profile. Modulated and unmodulated output pulses are permitted. The test levels are regarded as minimum values to guarantee the proper functioning of the meter under normal working conditions.
EN – European Standards
Current transformers IEC The protective earth terminal, if any: In order to satisfy such requirements when choosing insulating materials for the terminal block s 5470-1, adequate testing of materials shall be taken into account. The display of the total quantity of electrical energy supplied or the displays from which the total quantity supplied can be derived, whole or partial reference to which is the basis for payment, shall not be able to be reset during use.
This website is best viewed with browser version of up to Microsoft Internet Explorer 8 or Firefox 3. NOTE The type is represented by the sample meter s 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 construction of meters shall be such as to minimize the risks of short-circuiting of the insulation between live parts and accessible conductive parts due to accidental loosening or unscrewing of the wiring, screws, etc. Instrument transformers — Part 1: The register shall be able to record and display, starting from zero, for a minimum of 4 h, the energy corresponding to maximum current at reference voltage and unity power factor.
It does not apply to: Testing and measurement techniques — Immunity to conducted disturbances, induced by radio-frequency fields Electricity metering equipment a. The preferred pairs of upper and lower temperature limits are shown in Table 8.
The impulse voltage shall be applied between all the electric circuits and earth. General requirements, tests and test conditions – Metering equipment class indexes A, B and C.
Individual instruction manuals are not necessarily required. Dr If the instrument transformers are taken into account in the meter constant, the transformer ratio s shall be marked.
The result of the test is satisfactory if the meter case and terminal cover do not sustain damage, which could affect the function of the meter and it is not possible to touch live parts. The unmodulated output pulses shall have the shape shown in Figure B.
Every numerical element of an electronic display shall be able to show all the numbers from “zero” to “nine”. The specified measuring range of the meter may cover the specified measuring ranges of current transformers with different rated currents. Dr — — — — where x is the critical change value specified in 7.
BS EN 50470-1:2006
General terms relating to electrical measurements — Part Your basket is empty. It is submitted to the Unique Acceptance Procedure.
During type tests, the dielectric strength tests are considered to be valid only for the terminal arrangement of the meter, which has undergone the tests. NOTE 2 A voltage dip is a two-dimensional electromagnetic disturbance, the level of which is determined by both voltage and time duration. It shall be easily readable under normal conditions of use. The meter shall show no damage or change of information and shall operate correctly.
To comply therewith they shall fulfil the following test. Dry heat IEC For the purpose of these tests, the term “earth” has the following meaning: The mechanical strength of the meter shall be tested with the following tests.
Immunity to electrostatic discharges This test is not applicable to electromechanical meters.