Combining energy metering and communication in a single solution
TEMA4G integrates LEM’s EM4TII+ on-board energy meter, a reliable solution already in service on many trains, with an industrial modem that offers 4G and GPS connectivity.
Its web interface enables users to access detailed load profiles and various system parameters.
Compliant with all railway standards for vibration, shock, fire protection, and electromagnetic compatibility, TEMA4G is ideal for new projects and extensive retrofit programs.
It supports railway operators of all sizes in enhancing energy monitoring , management, and optimization.
TEMA4G – Features and benefits
Main characteristics
- Supports AC and DC rail networks
- Compliant with EN 50463:2017
- Mechanically compatible with previous TEMA4T
- 4 input channels for metering of both AC and DC signals of any existing traction network (600V DC to 3kV DC, 15kV AC 16,7Hz, 25kV AC 50Hz)
- Accuracy < 0.5R according to EN 50463-2
- EMV-06 EMC compliant
- Formatting of Compiled Energy Billing Data (CEBD)
- Connection available for GPS (NMEA) & 2G/4G Antenna
- Configuration via Ethernet port
- D-coded RJ45 connector, fixed on box
- Fixed IP address (by default: 10.63.255.117) or DHCP
- Web interface password protected.
- Power down
- Support up to 2min to send data package completely
- Alert sent via Modem
Typical applications
TEMA4G energy meters are specifically designed for the following rail applications:
TEMA4G’s on-board Energy Meter: EM4TII+
EM4TII+ is the energy meter inside the TEMA4G. It is complying to all the requirements of EN 50463-x & EN 50155 standards for metering and On-Board use, and thus satisfies the requirements of EC Decision 1302/2014 (TSI “Locomotives and passenger rolling stock”).
EM4TII+ processes signals from the transformer and electronic converter systems for current and voltage to calculate energy values which are stored as load profile information.
In this load profile (set and stored in intervals between 1 to 15 minutes), the primary energy values are recorded together with data such as:
- Date and time stamp
- Events
- Train identification numbers
- Absolute energy values for consumption and regeneration of active and reactive energy
- Frequency of the network (16.7 Hz, 50 Hz, 60 Hz or DC)
- Additional “user” load profile like the voltage with a shorter time interval (feature coming in a second design step)
- Position of the train at the time the load profile was stored and/or the event arose
- Further functions, such as voltage detection can be set.
TEMA4G Energy Meter – Standards compliance
| TEMA4G |
|---|
| EN 50463-x |
| EN 50155 |
| EN 50121-3-2 |
| EN 61373 |
| EN 50124-1 |
| IEC 62056-21 |
TEMA4G Meters – ASK FOR SAMPLES / QUOTATIONS
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