The LV100/SP67 belongs to LEM’s LV100 series of voltage transducers. It is a cost-effective, high-performance closed-loop Hall effect device. Even in environments with strong interference, it maintains accurate voltage measurement and signal conversion, making it widely used in industrial automation, energy storage systems, electric locomotives, power transmission & distribution, and renewable energy generation.
This transducer supports userselectable external resistors (R1), allowing the rated voltage to be flexibly adapted from 100 V up to 2500 V for DC, AC, or pulsed voltages, meeting the design requirements of diverse applications.
Compared with traditional voltage dividers or isolated amplifiers, the LV100/SP67 employs advanced closedloop Hall effect technology. Its operating principle uses a compensation current to minimise errors in the primary voltage signal, delivering extremely high linearity and very low temperature drift. Key advantages include:
|
Technical Advantage |
Description |
|
High accuracy & linearity |
Maintains stable gain over the full measurement range, eliminating nonlinear uncertainties |
|
Excellent temperature stability |
Minimal performance variation across the entire operating temperature range, reducing calibration and maintenance |
|
Fast response |
Delivers instantaneous 50 mA secondary current output – ideal for dynamic voltage/current monitoring |
|
Strong galvanic isolation |
Complete electrical isolation between primary and secondary circuits, ensuring safety for downstream equipment and operators |
Accuracy up to 0.7% – faithfully reproduces the measured voltage signal and effectively reduces system control errors. In automated production lines or highprecision power equipment, this level of accuracy ensures that the control system receives reliable, realtime voltage feedback.
Supports -40℃ to 80℃ – reliable operation in both severe cold (northern winters) and intense heat (southern summers). This makes the sensor particularly advantageous in demanding environments such as outdoor wind power installations and electric locomotives.
Thanks to closedloop Hall effect technology, the primary circuit (voltage under test) is completely electrically isolated from the secondary output signal. This prevents high voltages from entering the lowvoltage control system, ensuring the safety of both the measurement system and personnel.
Panelmount design allows engineers to quickly integrate the sensor into cabinets or distribution boxes, reducing electrical design time and assembly effort.
Operating voltage: ±15 V DC bipolar external supply – compatible with standard industrial power systems, enabling seamless integration into existing electrical control architectures.
|
Parameter |
Value |
|
Series / Model |
LV100/SP67 |
|
Type |
Voltage transducer |
|
Rated input current |
10 mA (rated voltage is set by external resistor R1) |
|
Measuring range |
20 mA |
|
Rated voltage range (adjustable) |
100 V – 2500 V (via userselected R1) |
|
Output signal type |
Instantaneous secondary current |
|
Secondary output signal |
50 mA |
|
Accuracy |
0.7% |
|
Technology |
Closedloop Hall effect |
|
Supply voltage |
±15 V DC (bipolar external) |
|
Operating temperature range |
-40℃ to 80℃ |
|
Mounting type |
Panel mount |
The LV100/SP67 is widely used in the following key areas:
Energy storage & power generation systems – precise monitoring of battery pack and power conversion module voltages
Power T&D systems – longterm stable operation in substations, wind farms, and photovoltaic plants under harsh electrical conditions
Electric locomotives & traction systems – onboard highvoltage detection in rail applications
Industrial automation – voltage closedloop control in inverters, servo drives, and other power electronics
Renewable gridconnected equipment – realtime voltage monitoring in PV inverters and energy storage converters (PCS)
| Our advantage is that we not only low prices, but we more suited to you. Our Keywords is New and original parts Fast Delivery Instock & available Short Leadtime 30-Days returns ISO9001 Certification 1 Year Warranty |
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