PM9102AP
Note 2: Isolation voltage may be specified, depending on customer requirements.
CONNECTION DESCRIPTION
Description
Voltage supply connection to Neutral line
Voltage supply connection to Live line
Neutral In
Connection to positive side of current sensor
Neutral Out
Connection to negative side of current sensor
JP1
SA9102/SA9602 output pin selector (Jumper)
SK1
Power measurement output
FUNCTIONAL DESCRIPTION
1. Power Calculation
In the Application Circuit (Figure 2), the output current from the current sensor will
be between 0 and 16µA (0 to 80A through a shunt resistor of 625µS). The current
input stage saturates at input currents greater than18µA
RMS
. The mains voltage
(230V + 15% -20%) is used to supply the circuitry with power and for the power
calculation, together with the current information from the current sensor (shunt
resistor).
The SA9102CP, SA9602EP (DIP-20), SA9602HP (DIP-20) and SA9602MP
integrated circuits may be adjusted to accommodate any voltage or current values.
The method of calculating external component values is described in paragraph 5
(Circuit Description).
SAMES offers evaluation module options, namely 230V/80A and 115V/80A.
The calculated power is integrated over time and converted into a corresponding
frequency. The frequency is transmitted as a pulse rate through an opto-coupler.
2.
Electrostatic Discharge (ESD) Protection
The device's inputs/outputs are protected against ESD according to Mil-Std 883C,
method 3015. The modules resistance to transients will be dependant upon the
protection components used.
Power Consumption
The overall power consumption rating for this power metering application (Figure
2), is under 500mW, excluding the current sensor, if a supply is taken directly from
the mains.
Isolation
The pulse output is isolated from the module, which is at mains potential, via an
opto-coupler. (In the event of the use of a current transformer for current sensing,
an opto-coupler would not be required.)
Designation
MAINS
3.
4.
sames
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SAMES [ SAMES ]
