sames

THREE PHASE POWER/ENERGY METERING MODULE

PULSE OUTPUT

1/10

7184

PDS038-SA9105-002

Rev. A

07-01-97

FEATURES

n

Performs one, two or three phase power

and energy measurement

n

Meets the accuracy requirements for

Class 1 AC Watt hour meters

n

Operates over a wide Temperature

Range

n

Uses current transformers for current

sensing

n

Three pulse rate outputs available

n

Protected agianst ESD

SA9105 APPLICATION NOTE

PM9105AP

DESCRIPTION

The SAMES three phase power/energy metering module, the PM9105AP provides three

pulse rate output options, the frequency of which are proportional to the active power

consumption.

Energy consumption can be determined by the power measurement being integrated

over time.

The method of calculation takes the power factor into account.

The output of this innovative universal three phase power/energy metering circuit is

ideally suited for energy calculations in applications using a µ-controller or mechanical

counter.

The application utilises the SAMES SA9105APA, SA9105EPA or SA9105FPA three

phase power metering integrated circuits for power measurement.

The module is supplied configured to operate on 3 x 230V, 3 x 80A mains system. This

can be adapted to operate on 3 x 115V, 3 x 80A mains system. Please refer to the resistor

selection table shown at the end of the Application Circuit parts list.