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Text and images c orrespond to t he current state of techn ology at the t ime of printing. Subject to mo dificat ions.
All info rmation is w ithout gua rantee in spite of carefu l editing - liabilit y excluded. C opyright © 2 022 Fronius™. All r ights reser ved.
Perfect Welding / Solar Energy / Perfect Charging
FRONIUS SMART METER WR
Bi-directional energy meter for feed-in management
and energy consumption monitoring
Introducing the Fronius Smart Meter WR, a bidirectional energy meter. Thanks to its high accuracy and fast communication
speed via Modbus RTU, the meter is suitable for dynamic feed-in management and grid-tied zero export PV systems. Together
with Fronius Solar.web monitoring, the Smart Meter offers a detailed overview of a home or business’ energy consumption.
TECHNICAL DATA FRONIUS SMART METER WR
FRONIUS SMART METER WR
Operating voltage range (line to line) 85 - 690 V
Frequency 45 - 65 Hz
Connections Euroblock style pluggable terminal blocks (12 AWG / 2.5 mm²)
Self-consumption 1.75 W
Maximum rated apparent power 3.75 W
Accuracy ± 0.5 % (see manual for details)
Mounting
Temperature range -40°C to 80°C
Dimensions (H x W x D) 6.02 in. × 3.35 in. × 1.50 in. (153 mm × 85.1 mm × 38.0 mm)
Weight 233 g (8.2 oz)
Interface to inverter Modbus RTU (RS 485)
Certifi cates / listings
Current transformers Primary: 1 – 6000 A / secondary: use only CTs with voltage output 333 mV
Supported grid types
Power supply Self-supplied, No external power supply required
UL 61010-1, CAN/CSA-C22.2 No. 61010-1-04, IEC 61010-1, EN 61326: 2002, EN61000-4-2, EN61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6, EN
Outdoor: If mounted inside an electrical enclosure that is rated NEMA 3R or 4 / IP 66
61000-4-11, FCC Part 15 Class B, EN 55022: 1994 Class B
4-wire (WYE), 3-phase 3-wire without N (Delta), 3-phase 4-wire delta (High-leg delta / stinger grid)
1-phase 3-wire (split-phase), 1-phase 2-wire without N, 3-phase
100-600V - 3
Indoor: Wall-mounted
CONFIGURATION DIAGRAM
PV GENERATOR
FRONIUS
INVERTER
Modbus RTU
1-phase / 3-phase
HOUSEHOLD
LOADS
FRONIUS
SMART METER WR
GRID
Communication path
Power path
EN v01 Jul 2022
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