PM9105AP
THREE PHASE POWER/ENERGY METERING MODULE
PULSE OUTPUT
FEATURES
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SA9105 APPLICATION NOTE
Performs one, two or three phase power
and energy measurement
Meets the accuracy requirements for
Class 1 AC Watt hour meters
Operates over a wide Temperature
Range
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Uses current transformers for current
sensing
Three pulse rate outputs available
Protected agianst ESD
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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.
1/10
7184
PDS038-SA9105-002
Rev. A
07-01-97
SAMES [ SAMES ]
