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.

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SA2005P

ANTI-TAMPER CONDITIONS

The SA2005P cater for the following meter tamper conditions and are indicated as follows: