SEM Three
The world's smallest three-phase analyzer
SEM Three is the first three-phase analyzer that fits in 1 DIN rail module.
4 quadrants energy metering and operating time counting to manage with precision how long an asset works
REACTIVE AND POWER PENALTIES
RELIABLE
COST-EFFECTIVE
Avoid reactive penalties and power excess
Combined with our billing simulation you'll avoid surprises in your electricity bill
There isn't a more versatile consumption analyzer
SEM Three has four working modes that will allow you to read three single-phase systems, one three-phase and up to three balanced three-phase.
SEM Three - Three phase Modbus energy meter
SEM Three is a three-phase 4 quadrants energy meter that allows to monitor the electrical parameters of your installation including active energy, reactive energy, voltage, current, power, maximum demand and more. These parameters are measured separately for each phase, what gives SEM Three high versatility to work as a three-phase analyzer or a triple single-phase analyzer.
In addition, the module of operating hours counting will allow to manage with precision how long an asset works to ease tasks of predictive maintenance, production control or energy efficiency. This feature allows to configure the electrical parameter that will start the counter, including all voltages, currents and powers, a threshold value and a delay time to start counting.
The design, occupying a single DIN rail module, allows that SEM Three can be placed easily at any installation.
The device has removal connectors for power supply (85-265 Vac), external current transformers (250 mA output) and RS-485 communications.
The communication of measured data works over Modbus RTU standard protocol.
SEM Three - Three phase Modbus energy meter
- 4 Quadrants
- Operating hours counting
- RS-485 slave
- Modbus RTU protocol
- Remote configuration
- Status LEDs
- Manual reset
- Compact dimensions. 1 DIN rail module
- 230 Vac input voltage
- PC self-extinguishing box
Single-phase split-core transformers
TRA1 20A
- Maximum current 20 A
- Secondary 250 mA
- Inner diameter 16 mm
- Class 3
TRA1 80A
- Maximum current 80 A
- Secondary 250 mA
- Inner diameter 10 mm
- Class 3
TRA1 100A
- Maximum current 100 A
- Secondary 250 mA
- Inner diameter 16 mm
- Class 3
TRA1 250A
- Maximum current 250 A
- Secondary 250 mA
- Inner diameter 25 mm
- Class 3
Single-phase closed core transformers
TRC1 20A
- Maximum current 20 A
- Secondary 250 mA
- Inner diameter 13 mm
- Class 0.5
TRC1 100A
- Maximum current 100 A
- Secondary 250 mA
- Inner diameter 12 mm
- Class 0.5
TRC1 250A
- Maximum current 250 A
- Secondary 250 mA
- Inner diameter 19 mm
- Class 0.5
SEM Three - Three phase Modbus energy meter
Datasheet SEM Three 
Manual SEM Three 
User manual SEM Three 
PC Configuration Software 
Single-phase split-core transformers
Manual TRA1 20A
Manual TRA1 80A
Manual TRA1 100A
Manual TRA1 250A
Single-phase closed-core transformers
Manual TRC1 20A
Manual TRC1 100A
Manual TRC1 250A