U181A

• Compact, double-tariff energy meter for 4 quadrants, import and export, partial and aggregate meter and up to 30 measured values for real-time quantities
• Variants for 2, 3 and 4-wire-systems with 80 A direct-connection, or 1A and 5A transformer connection
• Programmable current transformer ratio of 1 to 10000 and additionally displayable secondary value for energy
• Double-tariff measurement with input for tariff switching
• Partial meter can be started, stopped and reset
• Active energy measurement per EN50470-3, class B, for industrial and commercial applications, as well as demanding household applications
• Cost savings thanks to initial calibration at the factory in accordance with MID, conformity assessment procedure modules B and D
• Reactive energy measurement per EN 62053-23, class 2
• Phase sequence indicator and error detection for violation of voltage, current and frequency measuring ranges
• 2 programmable pulse outputs for energy values
• Flexible communication via infrared interface and optional interface modules for M-Bus, Modbus and Ethernet
• Large LCD panel with background illumination
• Tamper-proof covers, configuration disabling
• 3 year guarantee
• Made in EU

Energy Meters

System Voltage - Output of reactive energy (varh) For direct connection For transformer connection

via display and interface 80 A 1 (6) A and 5 (6) A

2-wire 230 - 240 V, 50 / 60 Hz U181A -

3-wire 3x 400 - 415 V, 50 / 60 Hz U187A U187B

4-wire 3x 230 / 400 - 240 / 415 V, 50 / 60 Hz U189A U189B

Voltage -

Output of reactive energy (varh)

via interface only

2-wire 230 - 240 V, 50 / 60 Hz U181D -

3-wire 3x 400 - 415 V, 50 / 60 Hz U187D U187W

4-wire 3x 230 / 400 - 240 / 415 V, 50 / 60 Hz U189D U189W