EN 62054-11-2004 pdf download.Electricity metering (a.c.) —Tariff and load control Part 11: Particular requirements for electronic ripple control receivers (IEC 62054-11:2004).
7.6.5 Fast transient burst test
In addition to IEC 62052-21, the following applies.
The receiver shall be tested in a quiescent state and during transmission cycles, each time for 1 mm and each time for both positive and negative polarities.
If the bursts are applied while the receiver is in a quiescent state, it shall be verified that the receiver does not start as an effect of the bursts. For this purpose, 3 s after the bursts have been applied a message is transmitted with operate voltage (]. The output elements shall operate correctly according to the commands of the message.
If the bursts are applied in such a way that bursts occur during a transmission cycle, it shall be verified that bursts did not impede the operation capability of the receiver. For this purpose, the receiver is started by a message with the operate voltage U. It shall be verified that, despite the application of the bursts, no wrong operation occurs. In cases where the disturbance coincides with the start bit or an information pulse related to this command, or is adjacent to it. It is accepted that no operation Is carried out. In all other cases, the command must be carried out.
However, in non-operation or even with some kinds of codes, a malfunction may be accepted if the transient coincides with a pulse position or is adjacent to it.
The application of the bursts shall not affect the internal timers. It shall be verified that after the test, operations carried out based on such internal timers are correctly executed.
7.6.6 Test of immunity to conducted disturbances, induced by r.f. fields
In addition to IEC 62052-21, the following applies.
The receiver shall be tested in a quiescent state and during transmission cycles.
If the conducted r.f. disturbances are applied while the receiver is in a quiescent state, it shall be verified that the receiver does not start as an effect of the conducted r.f. disturbances. For this purpose, 3 s after removing the conducted r.f. disturbances, a message is transmitted with operate voltage U. The output elements shall operate correctly according to the commands of the message.
If the conducted r.f. disturbances are applied during a transmission cycle, it shall be verified that the conducted r.f. disturbances did not impede the operation capability of the receiver. For this purpose, the receiver is started by a message with the operate voltage (if. It shall be verified that, despite the application of the conducted r.f. disturbances, no wrong operation occurs.
If the surges are applied in such a way that surges occur during a transmission cycle, it shall be verified that the surges did not impede the operation capability of the receiver. For this purpose, the receiver is started by a message with the operate voltage (Jr. It shall be verified that, despite the application of the surges. no wrong operation occurs. In cases where the disturbance coincides with the start bit or an information pulse related to this command, or is adjacent to It. it is accepted that no operation is carried out. In all other cases, the command must be carried out.
However, in non-operation or even with some kinds of codes, a malfunction may be accepted if the transient coincides with a pulse position or is adjacent to it.
The application of the surges shall not affect the internal timers. It shall be verified that after the test, the operations carried out based on such internal timers are correctly executed.
7.6.8 Test of Immunity to voltage dips and short Interruptions
7.6.8.1 Requirements
When the receiver is in quiescent state, voltage dips or short interruptions lower than 500 ms shall not affect, or initiate the starting of the receiver. For short interruptions longer than 500 ms, the receiver and its internal timers may stop and are re-initialized.
When the receiver is receiving a transmission cycle, voltage dips or short interruptions lower than 500 ms must not impede the operation capability of the receiver. For short interruptions longer than 500 ms. it is accepted that the receiver and its timers stop and are re-initialized.
If the receiver is equipped with a back-up power supply, voltage dips and short interruptions shall not affect the timers.
7.6.8.2 Test of effect of short interruptions of supply and voltage dips In operation
The aim of the test is to check that the operation of the receiver is not unduly disturbed by a voltage interruption of maximum 0,5 s ± 20 ms and that nothing other than the reset of the receiver occurs when the voltage interruption is longer than 0,5 s. Two situations have to be considered:
the interruption takes place while the receiver is connected to the network in a quiescent state;
the interruption takes place during a transmission cycle.
a) The 0.5 s interruption takes place while the receiver is in a quiescent state. EN 62054-11-2004 pdf download.