Three-phase energy meter EK-MS1-TP-TA

single-phasedigitalmulti-circuit

Description
The Ekinex KNX three-phase secondary electricity meter measures active and reactive energy with bidirectional counting (import/export) and provides a range of electrical parameters for energy monitoring and management. It accepts three measurement circuits via external current transformers and each circuit can also function as an independent single-phase input. The unit is designed for DIN-rail mounting (EN 60715) in electrical panels and cabinets and includes an integrated KNX communication module and an OLED display for measured and diagnostic data.

Functional overview
The meter publishes measured parameters on the KNX bus and offers total and partial counters, comparators and logic functions suitable for load control and threshold monitoring. Device parameters and communication objects are configurable via ETS for integration into building or industrial energy management systems.

Supply
The device includes a KNX terminal for bus connection. External current transformers (EK-MST-…A series) are required and supplied separately to complete the measuring circuits.

Configuration and commissioning
Configuration and commissioning require ETS5 or later. Application program for ETS: APEKMSXTP##.knxprod

Functions / Features

• OLED display for measured and diagnostic information
• Bidirectional measurement of active and reactive energy for single-phase and three-phase circuits
• Three measurement circuits for connection to external CTs; each can operate as an independent single-phase input
• Screw terminals for CT connections accepting conductors up to 4 mm²
• Measurement accuracy better than 2%
• Integrated KNX communication module with KNX terminal for bus connection
• 4 UM modular plastic housing (1 UM = 18 mm) for DIN-rail mounting

Technical specifications

• Measured quantities: active and reactive energy (bidirectional), current, voltage, active/reactive power, power factor and other electrical parameters
• Measurement circuits: 3 circuits for external CTs; convertible to independent single-phase circuits
• Nominal voltage Un: 3x230/400 V AC (±20%)
• Nominal frequency fn: 50 Hz
• Compatible CTs: from Imax 5 A up to Imax 120 A (CTs not included)
• Accuracy: <2%
• Display: OLED for measured and diagnostic information
• Housing: 4 UM modular plastic housing (1 UM = 18 mm)
• Mounting: DIN-rail mounting according to EN 60715
• Bus: integrated KNX communication module; KNX terminal included
• Bus functions: publishes electrical parameters, total/partial counters, comparators and logic functions for load control and threshold monitoring
• CT connection: screw terminals, cable cross-section up to 4 mm²