Energy meter EM4T

LEM has developed the EM4T - an energy meter designed for use across all rail networks.

In its basic single-phase version, the EM4T energy meter can be used in all existing rail networks (600V to 3000V DC, 15kV / 16,7Hz and 25kV / 50Hz AC). It is the only multi-network energy meter able to measure both AC and DC currents and can therefore be used for cross-border traffic.

The EM4T obtained the PTB approval as designed and tested in accordance with any valid traction and accounting standards. The input variables(current and voltage) are connected to the EM4T measuring circuits via differential input designed for connection of all current and voltage transducers/transformers currently available on the market.

The energy values are collected and stored in load profiles. The measured data recordings contain details such as date, time, events such as network change, train numbers, frequency… The EM4T is available in accuracy classes 1%, 0,5%, and 0,2%.