Ask: Accuracy on PowerTag Flex 160A (A9MEM1580) if installed on MCB 32A and recommendation for HMI Display?

[Parlindungan_Sitorus]

Dear Expert,

We kindly need your valuable support (urgent) for our question below:

Question 1,

On the datasheet PowerTag Flex 160A, there is information:

[Ib] basic current	25 A
starting current	100 mA

What does it means [Ib] basic current 25A?

The condition why we ask this question is, we want to measure electrical parameter on MCB 32A using this PowerTag Flex 160A (A9MEM1580) : https://www.se.com/sg/en/product/A9MEM1580/energy-sensor-powertag-flex-160a-3p-3p+n-top-and-bottom-p...

Normally, we want to propose using PowerTag A9MEM1542, but there is a condition where some of parameter requirement that needs to measure is not support by modbus register list on A9MEM1542 like:

Frequency,

Current Neutral,

Total Reactive Power,

Total Reactive Energy,

Total Apparent Energy

But those parameter above will support A9MEM1580.

We worried that there is an issue regarding the accuracy of parameter readings if we use A9MEM1580 and install on MCB 32A, even on the datasheet it is also say that this PowerTag can detect current starting from 100mA.

Question 2,

We want to propose for HMI Display to show the measurement from this PowerTag Flex 160A, can we use with Ethernet switchboard display FDM128 (LV434128) : https://www.se.com/us/en/product/LV434128/ethernet-switchboard-display-fdm128-up-to-8-connected-devi...

In this datasheet, it is state:

This FDM128 is an intelligent Ethernet switchboard display module and it is part of EnerlinX communication system. This display unit is compatible with Masterpact, Compact, PowerPact and PowerTag Link devices. It collects data from up to 8 devices over Ethernet, for a possibility of up to 160 PowerTag connected. FDM128 displays the measurements, alarms, and operating assistance data. 

Need the advice from the Experts,