PM9102AP

sames

3/10

Note 2: Isolation voltage may be specified, depending on customer requirements.

CONNECTION DESCRIPTION

Designation

Description

MAINS

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 625µ

S). The current

input stage saturates at input currents greater than18µA

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.

3.

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.

4.

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.)