EN 50470-1 PDF
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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Current transformers IEC The auxiliary circuits with a reference voltage below or equal to 40 V shall be connected to earth. For testing purposes, it shall be possible to increase the resolution to 0,01 times the principal unit. For electromechanical registers, register markings shall be indelible and easily readable. The terminal cover shall enclose the actual terminals, the conductor fixing screws and, unless otherwise specified, a suitable length of the external conductors and their insulation.
Dr aft for vo 3. NOTE 2 A voltage dip is a two-dimensional electromagnetic disturbance, the level of which is determined by both voltage and time duration.
EN – Electricity metering equipment (a.c.) — Part 1: General req –
The test shall be carried out according to ENunder the following conditions: The standard values of the rated secondary current of the current transformers are 1 A, 2 A and 5 A, but the preferred value is 5 A. Dr If for any reason the insulation tests have to be repeated, then they may eh performed on a new specimen.
The terminals of the circuits, which are not subjected to impulse voltage shall be connected to earth. General requirements, tests and test conditions em Metering equipment class indexes A, B and C. Stationary use at weatherprotected locations IEC The damp heat test also serves as a corrosion test.
Dr The type test defined in 3. Tests — Test Ka: Electricity metering equipment a. Other requirements and other EC Directives may be applicable to the products falling within the scope of this standard. Electricity metering – Payment systems – Part Testing and measurement techniques — Electrostatic discharge immunity test IEC Electrical connections shall be so designed that contact pressure is not transmitted through insulating material.
Testing and measurement techniques — Power frequency magnetic field 504470-1 test IEC NOTE 2 Values higher than 4 h should be subject of purchase contract. The principal unit shall be shown adjacent to the measured value. During the test, the quality of the insulation shall not be impaired by dust or abnormal humidity.
If the meter is of a special type e. In this case, the adjustment of the amplifier must be controlled by a field sensor. Classification of groups of environmental parameters and their severities — Section 1: Information on cookies usage.
EN – European Standards
Testing and measurement techniques — Radiated, radio-frequency, electromagnetic field immunity test IEC Unless otherwise specified, the normal 05470-1 for insulation tests are: The insulating properties of lacquer, enamel, ordinary paper, cotton, oxide film on metal parts, adhesive film and sealing compound, or similar unsure materials, shall not be regarded as sufficient for supplementary insulation.
It also applies to operation indicator s and test output s. Class II equipment Information under a to d may be marked on an external plate permanently attached to the meter cover.
Messeinrichtungen Genauigkeitsklassen A, B und C.
BS EN 50470-1:2006
It does not apply to: The protective earth terminal, if any: The ne of the meter shall not be impaired. It may be a single-position socket for one meter or a multiple-position socket for two or more meters [IEV modified] aft 3. Electrical testing, Electricity supply meters, Power measurement electricElectromechanical devices, Electric power wattageEnvironmental testing, Electrostatic devices, Wattmeters, Alternating current, Electrically-operated devices, Mechanical testing, Meters, Type testing.
After the test, the meter shall show no damage, nor change of the information and shall operate correctly in accordance with the requirements of the relevant standard. If the terminal block is integral with the meter base, it is sufficient to carry out the test only on the terminal block.
For special applications, other test levels might be necessary and should be agreed on between the user and the manufacturer.