I am starting a new remote current monitoring product which has short timescales, so I wanted to start that design from one your reference designs.
The unit is an add-on to an existing piece of industrial equipment and the main requirement is to measure current into 3 seperate parts of the equipment. Each of these are driven from one of the 3 incoming phases!
The new design has to connect to the equipment using current sense coils (3off); there will also be connection for a temperate sensor and some alarms. The design also needs to support a GPRS modem for sending the data and receiving incoming request and configurations
The customer does not (at the moment) need a power measurement, just current - but we would like to add a voltage measurement anyway
Many thanks
Ashley