3 Phase Voltage Transmitter 4–20mA Output 24VDC for AC 0–500V Monitoring
Instrava Curated Instruments — Precision Three-Phase Voltage Measurement for Modern Power Systems
At Instrava, we go beyond simply supplying instruments. Through our Curated Instruments approach, every 3 phase voltage transmitter is carefully selected from trusted manufacturers to ensure superior accuracy, long-term stability, and dependable industrial performance.
Designed for demanding electrical applications, this three phase voltage transmitter with 4–20mA output and 24VDC power supply delivers accurate, isolated measurement of three-phase AC voltage in both 3-wire and 4-wire systems. It is ideal for power monitoring, industrial automation, and intelligent energy management.
With our Optimized Solutions philosophy, we help customers select and deploy the right voltage measurement technologies for real-world operating conditions—improving reliability, efficiency, and system intelligence.
Power Monitoring & Control Description
High-Accuracy 3 Phase Voltage Transmitter for AC 0–500V Measurement
This 3 phase voltage transmitter 4–20mA output uses advanced electromagnetic isolation technology to accurately measure three-phase star-connected AC voltage and convert it into standardized analog outputs.
Key Features & Benefits
- Supports 3-Wire and 4-Wire Systems
Ideal for measuring three-phase star-connected AC voltage in a wide range of electrical networks. - Wide Input Voltage Range
Supports AC 0–500V standard input, with custom ranges available up to 600V. - Flexible Analog Output Options
Available outputs include:- 4–20mA
- 0–20mA
- 1V / 2V / 5V / 10V
- Exceptional Accuracy
Optional precision levels:- ±0.1%
- ±0.2%
- ±0.5%
- Fast Response Time
Less than 250ms for real-time monitoring applications.
Typical Applications
- Three-phase power distribution systems
- Motor control centers
- Industrial automation systems
- Renewable energy systems
- Building energy management systems
- Data center electrical infrastructure
Reliable Isolation, Flexible Installation, and Smart Integration
This three phase AC voltage transmitter is engineered for stable operation in demanding industrial environments.
Advanced Performance Highlights
- New Electromagnetic Isolation Technology
Provides highly reliable signal isolation and excellent anti-interference performance. - High Isolation Protection
Withstands 3kV / 50Hz for 1 minute, ensuring operator and equipment safety. - Excellent Linearity
Outstanding linearity of 0.1% for precise signal conversion. - Low Temperature Drift
Temperature coefficient of ≤100ppm/°C ensures long-term stability. - Low Power Consumption
Minimal current draw for efficient continuous operation.
Flexible Installation Options
- 35mm DIN rail mounting
- Flat screw fixing
Smart Integration Capabilities
- Compatible with PLC, DCS, SCADA, and IoT systems
- Supports AI-based power analytics and predictive maintenance
- Ideal for remote monitoring and intelligent energy management
Power Monitoring & Control Parameter
| Parameter | Specification |
|---|---|
| Input Type | Three-Phase AC Voltage (Star Connection) |
| Wiring System | 3-Wire / 4-Wire |
| Input Voltage Range | AC 0–500V (Custom up to 600V) |
| Rated Input Options | 5V, 20V, 50V, 100V, 200V, 220V, 300V, 380V, 500V |
| Output Signal | 4–20mA, 0–20mA, 1V, 2V, 5V, 10V |
| Accuracy | ±0.1%, ±0.2%, ±0.5% |
| Linearity | 0.1% |
| Auxiliary Power Supply | DC 5V, DC 12V, DC 24V |
| Load Capacity | Voltage Output: 5mA; Current Output: 6V |
| Overload Capacity | 2× nominal input, continuous |
| Isolation Voltage | 3kV / 50Hz / 1min |
| Offset Voltage | ≤10mV |
| Temperature Drift | ≤100ppm/°C |
| Bandwidth | 20Hz–5kHz |
| Response Time | <250ms |
| Current Consumption | <5mA + output current |
| Operating Temperature | -10°C to +70°C |
| Storage Temperature | -25°C to +85°C |
| Installation | DIN Rail / Screw Mount |
Instrava OEM/ODM
Tailored Sourcing & Customization: Getting You the Exact Product You Need
As your trusted supplier and sourcing partner, we bridge the gap between your custom requirements and China’s vast manufacturing capabilities.
Finding the right product in a massive supply chain can be challenging. That is where we step in.
As a curated industrial supplier, our core value is simple: we stand in your shoes to help you procure the most optimal products. Whether you are an EPC contractor needing specialized technical compliance, an OEM equipment manufacturer looking for custom branding, or an industrial distributor/trader seeking competitive edge, we customize and tailor products to fit your exact procurement needs.
How We Customize to Fit Your Procurement Needs
For EPC Contractors & Engineers: We custom-configure instruments and devices to match your precise datasheets—tailoring process connections, exotic materials, signal protocols, and managing third-party calibration and testing so you get project-ready solutions.
For OEM Equipment Manufacturers: We provide comprehensive OEM/ODM customization, including custom housing, labeling, branding (private labeling), and tailored technical specifications to seamlessly integrate with your machinery.
For Industrial Distributors & Traders: We offer flexible customization in packaging, product ranges, and technical parameters, helping you differentiate your portfolio and win more local bids.
Why Partner with Us for Custom Sourcing?
One-Stop Engineering Alignment: You don’t have to deal with multiple factories. We translate your technical requirements into precise manufacturer blueprints.
Strict Quality & Compliance Safeguard: We oversee the entire customization and production process in China, ensuring the final customized product meets your local standards and certifications.
Our Ultimate Value: We don’t just sell what’s on the shelf. We find, customize, and deliver the most suitable and cost-effective product for your unique application.
What is a 3 phase voltage transmitter with 4–20mA output used for?
A 3 phase voltage transmitter is designed to continuously measure AC voltage across three phases (L1, L2, L3) and convert it into a standard 4–20mA output signal.
This allows seamless integration with PLC, DCS, and SCADA systems for real-time voltage monitoring, making it essential for power distribution, industrial automation, and data center infrastructure.
Why choose a 4–20mA output for 3 phase voltage monitoring?
The 4–20mA signal is highly resistant to electrical noise and signal loss, making it ideal for industrial environments and long-distance transmission.
Compared to voltage outputs (e.g., 0–10V), 4–20mA ensures more stable and accurate data transmission, especially in complex systems such as data centers and electrical substations.
What does AC 0–500V monitoring range mean in practical applications?
An AC 0–500V range means the transmitter can accurately measure low to high voltage levels within typical three-phase systems, including 220V, 380V, and 480V networks.
This wide range makes it suitable for various applications, from building power systems to industrial equipment and data center power distribution.
How is a 3 phase voltage transmitter powered by 24VDC?
The transmitter uses a 24VDC external power supply to operate its internal circuitry and signal processing functions.
This standard industrial power input ensures compatibility with most control systems and provides stable operation in automation environments.
How does a 3 phase voltage transmitter improve system reliability?
By providing continuous, real-time voltage data, the transmitter enables early detection of abnormal conditions such as:
- Voltage imbalance between phases
- Overvoltage or undervoltage
- Power instability
This allows operators to take preventive action, reducing the risk of equipment damage and unplanned downtime.
What should be considered when selecting a 3 phase voltage transmitter?
Key selection factors include:
- Measurement range (e.g., 0–500V AC)
- Output type (4–20mA for stability and long-distance transmission)
- Power supply (24VDC compatibility)
- Accuracy and response time
- System integration requirements (PLC, SCADA, BMS)
Choosing the right configuration ensures accurate monitoring and seamless integration into your power management system.
Why Trust Instrava?
We select manufacturers from a neutral, impartial standpoint, always with your best interests in mind.
Our very existence depends on helping you source the products that are the perfect fit for your needs.
Based in China, we are able to conduct on-site inspections of production environments and product quality firsthand.
We help you avoid intermediaries posing as factories.
We facilitate smoother after-sales support, eliminating time zone issues and the delays often associated with dealing directly with factories.
Our multilingual team ensures effective communication.
For a trading startup, every interaction with a client is a precious opportunity—a sign that you are willing to place your trust in us and give us the chance to prove ourselves.
In the digital age, while information is easily accessible, misconceptions often cloud the trust between people.
Instrava relies entirely on trust; it is our core philosophy and the foundation of our existence in society. It is the fundamental basis for our long-term growth and our commitment to serving the community.
Please place your trust in us.
