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SA2005PSA 데이터시트(PDF) 7 Page - Sames |
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SA2005PSA 데이터시트(HTML) 7 Page - Sames |
7 / 16 page Phase Voltages During normal conditions, the LEDs are continuously switched on. Phase Failure, no voltage The SA2005P will record the energy consumption accurately under this condition Phase Sequence Error Method Result The SA2005P will record the energy consumption accurately under this condition Input / Output Terminals Interchanged The SA2005P will record the energy consumption accurately under this condition Missing Neutral Connection In this case, the meter would register the energy consumption correct. Return through Earth A indication for this condition could be realized external to the IC. Load Imbalance The SA2005P will record the energy consumption accurately under this condition Calibration The meter can not be re-adjusted, only reprogrammed. One LED is provided for each phase to indicate abnormal operating conditions. In case of a phase failure, the corresponding LED is switched off. In case of phase sequence error, all LEDs are flashing with a re- petition rate of approximately 1 Hz. A connection of a line voltage to the neutral terminal would be indicated in the same way. Description One LED is provided for each current sensor to indicate reverse energy flow. If detected, the corresponding LED is switched on. The SA2005P can be configured to accumulate the absolute energy consumption for each phase measured, irrespective of the direction of the energy flow. The architecture of the meter should provide for a good "phantom neutral" in cases where the neutral is disconnected from the meter. The SA2005P will therefore record the energy consumption accurately under this condition. The calibration data is stored in an EEPROM. There are no trim-pots required in this design. http://www.sames.co.za 7/16 sames sames SA2005P ANTI-TAMPER CONDITIONS The SA2005P cater for the following meter tamper conditions and are indicated as follows: |
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