Fronius Smart Meter 50kA-3

Wiring Diagrams

1N1E (Single-Phase, Neutral)

Wiring diagram for Fronius Smart Meter 50kA-3, 1-phase (1N1E) connection. Shows INPUT terminals for CURRENT, connected to GRID (L, N) and LOAD. Includes S1 and P1 terminals.

Connections:

• INPUT: CURRENT
• GRID: L, N
• LOAD: S1, P1

3-2E (1-2) (Three-Phase, Two-Wire)

Wiring diagram for Fronius Smart Meter 50kA-3, 3-phase, 2-wire (3-2E 1-2) connection. Shows INPUT terminals for CURRENT, connected to GRID (L1, L2) and LOAD. Includes S1 and P1 terminals.

Connections:

• INPUT: CURRENT
• GRID: L1, L2
• LOAD: S1, P1

3-2E (1-3) (Three-Phase, Two-Wire)

Wiring diagram for Fronius Smart Meter 50kA-3, 3-phase, 2-wire (3-2E 1-3) connection. Shows INPUT terminals for CURRENT, connected to GRID (L1, L2, L3) and LOAD. Includes S1 and P1 terminals.

Connections:

• INPUT: CURRENT
• GRID: L1, L2, L3
• LOAD: S1, P1

3-2E (2-3) (Three-Phase, Two-Wire)

Wiring diagram for Fronius Smart Meter 50kA-3, 3-phase, 2-wire (3-2E 2-3) connection. Shows INPUT terminals for VOLTAGE and CURRENT, connected to GRID (L1, L2, L3) and LOAD. Includes S1 and P1 terminals.

Connections:

• INPUT: VOLTAGE, CURRENT
• GRID: L1, L2, L3
• LOAD: S1, P1

3-3E (Three-Phase, Three-Wire)

Wiring diagram for Fronius Smart Meter 50kA-3, 3-phase, 3-wire (3-3E) connection. Shows INPUT terminals for VOLTAGE and CURRENT, connected to GRID (L1, L2, L3) and LOAD. Includes S1 and P1 terminals.

Connections:

• INPUT: VOLTAGE, CURRENT
• GRID: L1, L2, L3
• LOAD: S1, P1

3N3E (Three-Phase, Three-Wire with Neutral)

Wiring diagram for Fronius Smart Meter 50kA-3, 3-phase, 3-wire with Neutral (3N3E) connection. Shows INPUT terminals for VOLTAGE and CURRENT, connected to GRID (L1, L2, L3, N) and LOAD. Includes S1 and P1 terminals.

Connections:

• INPUT: VOLTAGE, CURRENT
• GRID: L1, L2, L3, N
• LOAD: S1, P1

Output Connections

RS485 Communication:

• Terminals: Rx/Tx, GND, D+, D-
• Note: Includes 120 Ohm termination resistor. Max cable length: 300m.

Inverter Connections:

• Fronius Inverter Type 1: GND, D+, D-
• Fronius Inverter Type 2: GND, M1+, M1-, Shield

* Supplied with the device.

Technical Specifications & Operation

Product Name

Fronius Smart Meter 50kA-3

Model Number

42,0410,2169

Document Code

002/27082021

Primary Function

Optimized for 400V grid measurements with current transformers. Can be configured for voltage transformers, but voltage range is not compatible with standard market voltage transformers.

Modbus Transmission Speed

9600 baud

Modbus Address

1

Modbus Parity Bit

None

Minimum Software Version

Datamanager 3.7.2 / Energypackage 1.3.3

Terminal Capacity

0.05 - 4 mm²

Specified Operating Range

-5 °C to +55 °C

Power Consumption

2.5 W

Measurements Displayed

• Total Active Energy Consumed (kWh)
• Total Reactive Energy (varh)
• Total Active Energy Produced (kWh)
• Partial Reactive Energy (varh)
• Active Power Max. Demand (kW)
• Active Power Demand (kW)
• Current L1, L2, L3 (A)
• Linked Voltage L1-L2, L2-L3, L3-L1 (V)
• Active Power (kW)
• Reactive Power (var)
• Apparent Power (kVA)

Operation Notes

• For hybrid applications, refer to the Fronius Symo Hybrid operating manual.
• Resetting counters: Wait for 2 seconds. To perform a reset, keep the key pressed for 5 seconds.

Programming

Only the transformation ratio of the current and voltage transformers needs to be set. All other parameters are pre-set.

Default Password

0001

CT Transformation Ratio

Range: 0001 - 9999

VT Transformation Ratio

Range: 001.0 - 500.0

Important Notes on Programming:

• Changing transformation ratios will reset the counters in the Fronius Smart Meter to 0.
• The product of CT Transformation ratio and VT Transformation ratio must not exceed 1,000,000.
• Conversion is only supported when using voltage converters (Direct voltage measurement VT = 1).

Users are advised to change and remember the password for security.