HIGH-PRECISION THREE-PHASE CURRENT MEASUREMENT
Walk inside the application field of the Series Digital Three-phase Ammeter. Designed for power distribution, motor control centers, and industrial automation, this instrument delivers stable, accurate three-phase current measurement. With RS-485 communication and Modbus-RTU protocol, it seamlessly connects to PLCs, SCADA, and energy management systems for remote monitoring and control.
Flexible Inputs for Any System
Supports both three-phase four-wire (3P4W) and three-phase three-wire (3P3W) connections. Rated current inputs: AC 1A and AC 5A – compatible with standard CTs worldwide. Handles 1.2× continuous overload and 10× instantaneous overload (5 seconds), ideal for motor starts and surge conditions. Current accuracy reaches Class 0.5, meeting demanding industrial requirements.
All-in-One Function Modules
Why buy separate devices? This meter integrates everything:
• RS-485 communication – Modbus-RTU, baud rate 1200–9600bps
• Digital inputs (4 channels) – Dry contact for status monitoring
• Relay outputs (3 channels) – AC 250V/5A, DC 30V/5A for alarm or control
• Analog outputs (3 channels) – 0/4–20mA or 0–5/10V for legacy systems
One device handles measurement, transmission, control, and alarming – reducing panel space and wiring costs.
Wide-Range Power Supply
Features AC/DC 80V–270V wide-range auxiliary power, plus AC220V compatibility. Works in control panels with DC supplies or field locations with AC power – no extra converters needed. Total consumption below 4VA for cool, reliable 24/7 operation.
Built for Harsh Environments
Engineered to industrial-grade standards:
• Operating temperature: -10℃ to +55℃
• Storage temperature: -25℃ to +70℃
• Humidity: ≤93% (non-condensing)
• Altitude: ≤2500m
• Insulation resistance: >100MΩ
• Dielectric strength: AC 2kV
Delivers EMC Level 4 performance (ESD, EFT, surge) – install confidently next to VFDs, contactors, and power factor correction banks.
Multiple Sizes for Any Panel
Available in standard dimensions to fit existing cutouts:
- Frame 120×120mm / Cutout 111×111mm
- Frame 96×96mm / Cutout 92×92mm
- Frame 80×80mm / Cutout 76×76mm
- Frame 72×72mm / Cutout 68×68mm
- Frame 96×48mm / Cutout 92×45mm
- Frame 48×48mm / Cutout 45×45mm
All versions feature a clear digital tube display for easy local reading.
Programmable CT Ratio
Program the CT ratio directly from the front panel or via Modbus. The display shows actual primary current – no mental math required. Change a CT in the field? Simply update the setting.
Typical Applications
• Power distribution panels – Real-time feeder monitoring, overload alarms
• Motor control centers – Phase balance checking, relay-based pump control
• Building automation – Modbus integration to BMS
• Retrofit projects – Wide power range, multiple CT compatibility
Efficiency Through Smart Design
By combining measurement, I/O, and communication in one unit, this ammeter reduces separate meters, transducers, and PLC input cards. The result: less panel space, lower installation cost, simpler troubleshooting, and reliable real-time current data exactly where you need it.
