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QEED Split-Core Hall Effect Current Sensor
QI-HSC Split-Core Hall Effect AC/DC Current Sensor
The QEED QI-HSC series is a split-core Hall effect current sensor for measuring both AC and DC current. The split-core design allows installation around an existing conductor without disconnecting the cable, making it suitable for retrofit monitoring and commissioning work.
QI-HSC is available in 50A and 100A AC/DC versions. It provides an analogue voltage output proportional to the measured current and is suitable for integration with current / voltage converters, monitoring systems, data loggers, PLC analogue inputs and energy monitoring platforms.
Measurement
AC and DC current
Models
50A and 100A AC/DC
Output
±4V at nominal current
Frequency
DC up to 20kHz
Overview
QI-HSC uses Hall effect measurement technology to measure current without direct electrical contact with the primary conductor. This makes it useful for applications where both AC and DC current must be monitored and where conventional AC-only current transformers are not suitable.
The openable split-core construction simplifies retrofit installation. Engineers can clamp the sensor around the conductor without removing cable lugs or interrupting the circuit, reducing installation time and site disruption.
Positioning: Split-core Hall effect AC/DC current sensor for retrofit current measurement, DC systems, inverter outputs, battery systems, UPS, PV, DC motor and industrial monitoring applications.
Key Features
AC/DC Measurement
Measures both alternating current and direct current using Hall effect sensing technology.
Split-Core Design
Openable core allows installation on existing conductors without disconnecting the cable.
Wide Frequency Range
Measures from DC up to 20kHz, making it suitable for inverter and variable waveform applications.
Fast Response
10µs response time supports dynamic current measurement and fast signal response.
Analogue Voltage Output
Provides ±4V output at nominal primary current for integration with measurement equipment.
Primary / Secondary Isolation
3kV isolation between primary and secondary side for safer measurement integration.
Model Selection
| Model |
Nominal Current Measurement |
Output |
Typical Application |
| QI-HSC-50 |
50A AC/DC |
±4V ±1% at nominal current |
Small DC systems, machine monitoring, battery branch circuits, low-current inverter circuits |
| QI-HSC-100 |
100A AC/DC |
±4V ±1% at nominal current |
UPS, battery systems, DC motor circuits, inverter output monitoring and industrial current measurement |
Technical Specifications
| Parameter |
QI-HSC-50 / QI-HSC-100 Specification |
| Nominal Current |
QI-HSC-50: 50A AC/DC
QI-HSC-100: 100A AC/DC |
| Auxiliary Power Supply |
±12 to ±15 Vdc |
| Working Frequency |
From DC up to 20kHz |
| Load Resistance |
Minimum 10kΩ |
| Absorption @ 15Vdc |
25mA |
| Voltage Output at Ip = 0 |
±25mV |
| Voltage Output at Nominal Current Ipn |
±4V ±1% |
| Accuracy |
±1% |
| Linearity |
< 1% |
| Thermal Drift |
±1mV / °C |
| Response Time |
10µs, 0...90% |
| Isolation Primary / Secondary |
3kV |
| Working Temperature |
-25°C to +85°C |
| Storage Temperature |
-40°C to +100°C |
| Connection |
Removable connector for cable section 0.2 to 2.5mm² |
| Weight |
80g |
Terminal and Signal Reference
| Marking |
Description |
| Ip |
Primary current |
| Ipn |
Nominal primary current |
| 0V |
Measurement reference and auxiliary power supply reference |
| V+ |
Positive auxiliary power supply, +12 to +15Vdc |
| V- |
Negative auxiliary power supply, -12 to -15Vdc |
| Vout |
Nominal analogue output, ±4V |
Typical Applications
Battery Systems
Measure charge and discharge current in low-voltage DC battery applications.
UPS and DC Power
Monitor DC bus, UPS battery current and telecom DC power circuits.
Inverters and Drives
Measure AC/DC current where waveform shape and frequency may vary.
PV Systems
Suitable for selected DC current monitoring points in photovoltaic systems.
DC Motor Control
Useful for monitoring motor current in DC drive and control applications.
Energy Monitoring
Can be connected to compatible converters, data loggers and monitoring systems.
Integration with Converters and Monitoring Systems
QI-HSC provides an analogue voltage output and requires an auxiliary ±12 to ±15Vdc supply. For Modbus or cloud monitoring applications, the sensor can be connected to a compatible signal converter or analyser such as QE-CURRENT-485, PLC analogue input, data acquisition module or industrial monitoring system.
- Use with compatible analogue input modules or signal converters
- Suitable for AC/DC current monitoring where normal CTs cannot measure DC
- Useful for retrofit applications because the conductor does not need to be disconnected
- Can be integrated into EMS, SCADA, BMS, IoT gateway or IoTWatt 4.0 architectures through a compatible interface
Selection note: Confirm the current range, cable size, power supply availability and required output interface before ordering. Hall effect sensors need auxiliary power supply and correct signal input compatibility.
QI-HSC Supply and Integration
Saturn Pyro supports QEED QI-HSC split-core Hall effect current sensors for AC/DC current measurement, battery monitoring, UPS, DC power, inverter, PV, DC motor, RS485 converter integration and IoTWatt 4.0 energy monitoring projects in Malaysia.
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Measurement
AC and DC current
Models
50A and 100A AC/DC
Output
±4V at nominal current
Frequency
DC up to 20kHz
Malaysia
