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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These windows shall be of transparent material, which cannot be removed undamaged without breaking the seal s. It also applies to operation indicator s and test 504701- s. Click to learn more. The specified measuring range of the meter may dn the specified measuring ranges of current transformers with different rated currents.
It is permissible to indicate the connection diagram by an identification figure in accordance with national standards. IP51, but without suction in the meter; IP 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.
The other terminal of this current circuit shall be open.
EN – European Standards
You may find similar items within these categories by selecting from the choices below:. The tests shall be carried out according to ENunder the following conditions: 504770-1 dated references, only the edition cited applies. No trace of corrosion likely to affect the functional properties of the meter shall be apparent.
It is submitted to the Unique Acceptance Procedure. For electromechanical registers, register markings shall be indelible and easily readable. NOTE 2 A voltage dip is a two-dimensional electromagnetic disturbance, the level of which is determined by both voltage and time duration.
BS EN 50470-1:2006
een Any protective coating shall not be liable sn damage by ordinary handling nor damage due to exposure to air, under normal working conditions. The protective earth terminal, if any: Any ingress of dust shall be only in a quantity not impairing the operation of the meter. It is usually designed and operated to obtain the highest accuracy and stability in a controlled laboratory environment [IEC3.
They should not be ignited by thermal overload of live parts in contact with them. If the terminal block is integral with the meter base, it is sufficient to carry out the test only on the terminal block.
Mechanical requirements em tests General mechanical requirements The manufacturer shall specify the mechanical environment the meter is intended for.
EN – Electricity metering equipment (a.c.) — Part 1: General req –
Tests — Test Fc: 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.
The drums, which indicate a decimal fraction of the unit shall be marked differently when they are visible. Testing and measurement techniques — Radiated, radio-frequency, electromagnetic field immunity test IEC Immunity to electrostatic discharges This test is not applicable to electromechanical meters.
Electromechanical meters for active energy class indexes A and B. For example of test set-up see Figure D. An influence quantity is a disturbance if for that influence quantity the rated operating conditions are not specified 3.
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. NOTE For meters for special use in corrosive atmospheres, additional requirements shall be fixed in the purchase contract e. See also Figure C. NOTE 3 The regular roll over of the register is not considered as a reset. The test levels are regarded as minimum values to guarantee the proper functioning of the meter under normal working conditions.
In the case of an electronic register the corresponding non-volatile memory shall have a minimum retention time of four months. After the test, the meter shall show no damage and shall comply with the dielectric strength tests of 7.
General requirements, tests and test conditions – Metering equipment class indexes A, B and C – This European Standard applies to newly manufactured watt-hour meters, measuring active electrical energy, intended for residential, commercial and light industrial use, for use on 50 Hz electrical networks. The principal unit shall be shown adjacent to the measured value.