In industrial automation and rail transportation, the accuracy and reliability of current measurement directly impact system safety and efficiency. LEM, a global leader in electrical measurement, introduces the LTC600-SF/SP5 closed-loop Hall-effect current sensor – a precise and dependable solution for high-current applications.
Wide Measuring Range for Accurate High-Current Measurement
Rated for 500 A nominal current and capable of measuring up to ±1500 A, the LTC600-SF/SP5 easily handles both rated and overload conditions. It accurately measures DC, AC, and pulsed currents.
High Accuracy & Excellent Linearity
Closed-loop Hall technology delivers an overall accuracy of ±0.7% and linearity of <±0.1%, ensuring stable and reliable data even in harsh industrial environments. Low thermal drift across the full temperature range maintains outstanding performance from -40°C to +105°C.
Fast Response for Dynamic Monitoring
A response time of 1 µs allows the system to capture transient current changes in real time. The wide frequency bandwidth from DC to 100 kHz covers the dominant frequency components in typical applications such as variable frequency drives and switched-mode power supplies.
Closed-Loop Hall Technology – Signal Integrity Assured
The closed-loop (compensated) Hall technology provides complete galvanic isolation between the primary high-power circuit and the secondary electronic circuit. This not only eliminates insertion loss but also delivers exceptional immunity to external interference, ensuring clean signal output in complex electromagnetic environments.
Flexible Power Supply & Easy Installation
Supports a wide dual-supply voltage range from ±15 V to ±24 V, compatible with various industrial power systems. Includes mounting feet for chassis mount installation. The modular design allows horizontal or vertical mounting, meeting the flexibility requirements of different markets including railway systems.
|
Parameter |
Value |
|
Rated primary current (IPN) |
500 A |
|
Measuring range (IPM @24V) |
0 ~ ±1500 A |
|
Secondary output signal |
100 mA (instantaneous current) |
|
Turns ratio |
1 : 5000 |
|
Accuracy (@IPN, TA=25°C) |
±0.7% |
|
Accuracy (full temperature range) |
±1.6% |
|
Linearity |
<±0.1% |
|
Response time (@90% IPN) |
<1 µs |
|
Frequency bandwidth (-1 dB) |
DC ~ 100 kHz |
|
Operating temperature |
-40°C ~ +105°C |
|
Supply voltage |
±15V ~ ±24V |
|
Case flammability rating |
UL 94-V0 |
|
Mass |
approx. 780 g |
Thanks to its outstanding performance and reliability, the LTC600-SF/SP5 is widely used in:
Industrial variable frequency drives – Current monitoring and feedback in AC variable speed drives and servo motor drives.
Power supplies – Closed-loop current control in UPS and switched-mode power supplies (SMPS).
DC motor drives – Current measurement and protection in static converters.
Welding equipment – Precise control of welding power sources.
Battery-powered applications – Monitoring charge/discharge currents in battery systems.
Railway traction systems – Onboard current measurement meeting railway equipment standards.
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