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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Thus, when the voltage and the current circuits of a measuring element are connected together in normal use the test shall be made on the whole. Inductive voltage transformers IEC These windows shall be of transparent material, which cannot be removed undamaged without breaking the seal s. For examples of test set-up see Figure D. It is distributed for review and comments.
This standard distinguishes between: The function of the meter shall not be impaired. The construction of meters shall be such as to minimize the risks of short-circuiting of the insulation between live dn and accessible conductive parts due to accidental loosening or unscrewing of the wiring, screws, etc. Vibration sinusoidal IEC For dated references, only the edition cited applies. The result is judged visually.
For the terminal block and terminal cover of such 54070-1 meter, reinforced insulation is sufficient.
EN – European Standards
NOTE Meters are generally used in locations where levels of vibration and shock are of low significance. Testing and measurement techniques — Electrostatic discharge immunity test IEC The test levels are regarded as minimum values to guarantee the proper functioning of the meter under normal working conditions.
NOTE 3 The ratio of the highest to the lowest reference speed of the rotors of each of sn meters of the same type shall not exceed 1,5. 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.
Protective earth ground After installation, it shall not be possible to loosen the protective earth terminal without the use of a tool. Any ingress of dust shall be only in a quantity not impairing the operation of the meter.
EN – Electricity metering equipment (a.c.) — Part 1: General req –
Tests — Test Eh: The test shall be carried out according to ENunder the following conditions: For undated references, the latest edition of the referenced document including 50470–1 amendments applies.
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. You may find similar items within these categories by selecting from the choices below:.
During the test, the quality of the insulation shall not be impaired by dust or abnormal humidity.
EN EN Electricity metering equipment a. The protective earth terminal, if any: Dry heat IEC Tests — Test Sa: Meters are designated by the manufacturer by one or more groups of letters or numbers, or a combination of letters and numbers.
General requirements, tests and test conditions. When the voltage and the current circuits of the same measuring element are separated and appropriately insulated in normal use for example each circuit connected to a measuring transformerthe test shall be made separately on each circuit. Stationary use at weatherprotected locations IEC Particular requirements – Static payment meters for active energy classes 1 and 2.
It shall be easily readable under normal conditions of use. For requirements and testing, see 7. General definitions and test requirements IEC Mechanical requirements and tests General mechanical requirements The manufacturer shall specify the mechanical environment the meter is intended for.