IBA ibaMS3xAI-1A Precision AC Current Measurement Module
IBA ibaMS3xAI-1A: Precision AC Current Measurement Module
The ibaMS3xAI-1A is a specialized analog input module within the ibaMS (Modular System) family.
It is specifically engineered for high-precision, direct measurement of AC currents up to 1 A, making it a vital component for power quality monitoring and electrical asset diagnostics.
Technical Parameter Table
| Parameter | Specification |
| Number of Inputs | 3 Analog Inputs (isolated) |
| Input Signal | 1 A AC (Nominal) |
| Measurement Type | True RMS or Instantaneous Values (via ibaPDA) |
| Input Range | Designed for secondary current of current transformers (CTs) |
| Sampling Rate | Up to 40 kHz per channel (depending on backplane CPU) |
| Resolution | 16-bit A/D converter |
| Galvanic Isolation | Channel-to-channel and channel-to-backplane |
| Connection Technology | Screw-terminals or pluggable connectors |
Product Advantages and Features
Direct CT Connection: Specifically designed to interface with the secondary side of standard current transformers (1 A output), eliminating the need for external transducers.
Phase-Synchronous Sampling: When used within the ibaMS rack, all three phases are sampled simultaneously, which is critical for accurate power factor and harmonic calculations.
High Electrical Safety: Robust galvanic isolation ensures that high-voltage surges on the primary side do not damage the sensitive data acquisition hardware.
Seamless Integration: Fully supported by ibaPDA, allowing for real-time visualization of waveforms and automated reporting of energy metrics.
Related Models & Same Series
The ibaMS (Modular System) allows you to mix and match various input types in a single rack:
ibaMS3xAI-5A: The high-current variant designed for 5 A AC secondary currents.
ibaMS4xAI-V: Standard voltage input module for DC and AC signals.
ibaMS8xDI: Digital input module for status and event monitoring.
ibaMS-Central: The head station/CPU required to power and manage the AI modules.
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Energy Monitoring: Monitoring the power consumption of large industrial motors by measuring the three-phase currents via existing 1 A current transformers.
Fault Recording: Acting as a high-speed “black box” to capture current spikes or phase imbalances during electrical faults.
Preventive Maintenance: Analyzing the harmonic content of currents to detect early signs of insulation failure or bearing wear in large pumps and fans.
Installation and Maintenance
Installation: The module must be snapped into an ibaMS subrack. Ensure that the 1 A current transformer circuit is never opened while the primary side is live (always short-circuit the CT before removing the module).
Wiring: Use twisted-pair cabling for the 1 A signals to minimize electromagnetic interference in high-current environments.
Maintenance: No recalibration is typically required in the field. Check terminal tightness annually, especially in high-vibration industrial settings.
Unique Product Description
The ibaMS3xAI-1A provides a clear, high-resolution heartbeat for your electrical systems. By capturing AC currents at the source with 16-bit precision, it turns raw electricity into actionable data.
Whether you are hunting for elusive harmonics or calculating precise energy costs, this module provides the industrial-grade reliability needed to bridge the gap between high-power electrical racks and digital analytics.