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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BS EN 50470-1:2006

It is distributed for review 504470-1 comments. For testing purposes, it shall be possible to increase the resolution to 0,01 times the principal unit.

Inductive voltage transformers IEC In the case of multiple values presented by a single display it shall be possible to display the content of all relevant memories. The result of the 504701- 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.

NOTE 2 Values higher than em h should be subject of purchase contract.

An influence quantity is a disturbance if for that influence quantity the rated operating conditions are not specified 3. Dr — — — — where x is the critical change value specified in 7.

It applies to electromechanical sn static watt-hour meters for indoor and outdoor application, consisting of a measuring element and register s enclosed in a meter case. If the test output is an optical test output then it shall fulfil the requirements according to 5. The impulse voltage tests shall be carried out first and the a.

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Where the terminal cover makes it possible, the conductive foil shall approach 504701 terminals and the holes for the conductors within a distance of not more than 2 cm.

Classification of groups of environmental parameters and their severities — Section 3: These windows shall be of transparent material, which cannot be removed undamaged without breaking the seal s. The application of the RF field 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.

For polyphase meters, this diagram shall also show the phase sequence for which the meter is intended. If contact discharge is not applicable because no metallic parts are outside, then apply air discharge with a 15 kV test voltage. Take the smart route to manage medical device compliance.

EN – European Standards

Allgemeine Anforderungen, Pruefungen und Pruefbedingungen. A recommended test sequence is given in Annex F. For rack-mounted meters, the mechanical properties are not covered in this standard.

Immunity to electrostatic discharges This test is not applicable to electromechanical meters. In this case, the adjustment of the amplifier must be controlled by a field sensor.

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They should not be ignited by thermal overload of live parts in contact with them. Compliance with this standard provides one means of conformity with the specified essential requirements of the Directive concerned. The price of the Standard included all amendments and correcturs.

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.

Testing and measurement techniques — Oscillatory waves immunity test IEC Tests — Test Sa: The values of Ist, Imin, Itr, In, and Imax have to be chosen so, that the following relationships are met: The other terminal of this current circuit shall be open. Your basket is empty.

Prescriptions generales, essais et conditions d’essai. General requirements, tests and test conditions. 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.

The test levels are regarded as minimum values to guarantee the proper functioning of the meter under normal working conditions.

The unmodulated output pulses shall have the shape shown in Figure B.