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Product Advantage ▼
Below are the core technical strengths of VN2A 25 P02 closed-loop Hall voltage sensor, with verified performance parameters and standardized certifications to deliver reliable detection performance for power electronic equipment:
1. Closed-loop Hall Isolation Design for Safe Isolated Voltage Detection
VN2A 25 P02 is a compensated closed-loop voltage sensor based on Hall effect, delivering complete galvanic isolation between primary and secondary circuits. It brings zero insertion loss to tested circuits with negligible circuit disturbance, effectively blocking high-voltage crosstalk and electromagnetic interference to guarantee circuit safety for power equipment.
2. Flame-retardant Housing & Compact Miniature Structure for Easy Equipment Integration
The sensor shell is manufactured with UL94-V0 flame retardant material to resist open fire and high-temperature aging. Its tiny modular dimension saves plenty of PCB layout space, enabling seamless embedded assembly inside switching power supplies, UPS and industrial controllers for diversified equipment development.
3. Ultra-high Measuring Precision & Excellent Linear Output Performance
Boasting superior overall accuracy and extremely low non-linearity error, this transducer maintains consistent proportional output signals. It eliminates measurement deviation caused by magnetic hysteresis, ensuring reliable, repeatable voltage sampling data which is essential for precise closed-loop control of power conversion systems.
4. Ultra-low Thermal Drift & Full-range Stable Operation (-40℃ ~ 85℃)
With optimized temperature compensation circuit design, the sensor features outstanding low temperature drift characteristics. It runs stably across the wide temperature range from -40°C to 85°C without obvious accuracy attenuation, adapting to harsh industrial outdoor, high-temperature cabinet and cold storage working environments all year round.
5. Large Output Bandwidth & Ultra-fast Dynamic Response Speed
Equipped with wide frequency bandwidth and rapid signal tracking capability, its response time reaches only 25μs when capturing 90% rated input voltage. It can instantly track transient voltage surges and pulse waveforms, perfectly fitting high-frequency switching power supply, inverter and new energy equipment real-time monitoring demands.
6. Full International Standard Compliance with Global Export Certifications
This voltage transducer strictly complies with EN50178:1997, IEC61010-1:2000, UL508:2010 international safety standards. It has obtained CE and RoHS certification simultaneously, meeting electrical safety requirements for EU, North America and most global regions, supporting OEM mass export business smoothly.
Technical Parameters ▼
Working Principle | Closed-loop compensated Hall effect |
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Measurable Signal | DC / AC / Pulse voltage |
Galvanic Isolation | Complete electrical isolation between primary & secondary side |
Insertion Loss | Zero insertion loss, no impact on tested circuit |
Overall Accuracy | High precision measurement |
Non-linearity Error | Extremely low, great linear output characteristic |
Operating Temperature Range | -40℃ ~ +85℃ |
Temperature Drift | Ultra-low thermal drift |
Response Time (90% Rated Current) | 25 μs |
Bandwidth | Wide output bandwidth |
Housing Material | UL94-V0 flame retardant plastic |
Dimension | Compact miniature size |
Compliance Standards | EN50178:1997, IEC61010-1:2000, UL508:2010 |
Certifications | CE, RoHS compliant |
Product Uses ▼
This hall voltage sensor performs real-time voltage monitoring and signal feedback within frequency converters. Accurate voltage sampling effectively stabilizes motor rotation speed and raises speed control precision, reducing operation fluctuation and energy consumption for industrial drive equipment.
1. Uninterruptible Power Supply (UPS)
It continuously detects input, bus and output voltage of UPS devices. Once grid voltage fluctuates abnormally, the sensor feeds signals back rapidly to trigger battery switching, maintaining uninterrupted power supply for servers and precision electronic instruments all the time.
2. Static Converters for DC Motor Drives
Installed inside DC motor drive converters to collect real-time internal voltage parameters. The sampled signals are transmitted to control chips to adjust output torque and rotational speed, optimizing motor working efficiency and extending the service life of the whole drive system.
3. Switch Mode Power Supplies (SMPS)
It precisely samples output voltage of switching power supplies to build closed-loop voltage stabilization control. Thanks to fast response speed, it restrains voltage ripples and surges efficiently, improving power supply stability and load compatibility for various power adapter modules.
4. Welding Machine Power Equipment
The sensor tracks dynamic voltage changes throughout the welding process steadily. Constant voltage output is maintained via real-time feedback adjustment, avoiding defective welding spots caused by voltage instability and supporting stable work of inverter welding power sources.
5. Industrial Automation Equipment
Capable of measuring DC, AC as well as pulse voltage signals universally. With wide temperature adaptability and high linearity, it serves as a general voltage detection component for all kinds of automated machinery and industrial testing instruments.
6. Power Electronic Systems
Acts as the core voltage detection unit in various power electronic systems. It provides accurate voltage data for system logic judgment, supporting overvoltage, undervoltage protection and overall closed-loop control to secure safe operation of power conversion equipment.
Product Operate Guide ▼
Instructions for using the VN2A25P02 voltage sensor:
Selection of measuring resistor R1: The measurement accuracy is highest when the sensor operates at its rated primary current. In application, select a suitable measuring resistor R1 to ensure that the measured current corresponding to the measured voltage operates at 10mA. For example: Measured voltage Vn = 250V a) R1 = 25kΩ, = 10mA, measurement accuracy at 25°C is 0.8% b) R1 = 50kΩ, b = 5mA, measurement accuracy at 25°C is 1.6%
Recommended measurement range: Considering the resistance of the primary coil (the coil resistance must be less than the measuring resistor R1) and insulation characteristics, the voltage sensor's measurement range is from 10V to 1500V.
FAQ ▼
Q1: What voltage types can VN2A 25 P02 measure?
A: It supports DC, AC and pulse voltage measurement based on closed-loop Hall effect. With electrical isolation between primary and secondary sides, it avoids mutual interference between high-voltage tested circuits and low-voltage control boards for industrial power equipment.
Q2: What is the working temperature range and accuracy of this sensor?
A: Operating temperature ranges from -40℃ to 85℃ with total accuracy up to ±0.6%. Low temperature drift design keeps measuring error tiny under drastic ambient temperature changes, suitable for all-year-round industrial field application.
Q3: Does this voltage sensor have safety and export certifications?
A: Yes, it complies with CE, RoHS directives and meets EN50178, IEC61010-1 safety standards. Reinforced insulation design satisfies CAT III grade, fully qualified for overseas electronic equipment export and OEM customized projects.
Q4: Is it suitable for mass OEM production and PCB assembly?
A: Miniature modular structure is easy for direct PCB soldering. Standard pin layout simplifies assembly procedures, multiple batch packaging options are available to meet prototype trial production and large-volume order demands flexibly.
