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Open loop
| Primary Current, Measuring Range | 125 A |
| Output Voltage Range | 1.15 V |
| Supply Voltage | 3.14 ... 3.46 V |
| Accuracy @ IPN | 1.45 % of IPN |
| Operating Temperature Range | −40 ... 105 °C |
| Isolation Test Voltage | 4.4 kV |
AC variable speed and servo motor drives, Static converters for DC motor drives, Battery supplied applications, Uninterruptible Power Supplies (UPS), Switched Mode Power Supplies (SMPS), Combiner box, Solar inverter on DC side of the inverter (MPPT), Plasma cutter, welding, Charging station.
The HOB 50-P/SP33 is an open loop current transducer from LEM for the electronic measurement of current: DC, AC, pulsed..., with galvanic isolation.
Typical applications include AC variable speed and servo motor drives, Static converters for DC motor drives, Battery supplied applications and Uninterruptible Power Supplies (UPS).
Key characteristics from the official datasheet: linearity error 0.70 % of IPN; frequency bandwidth 1000 kHz; operating temperature −40 ... 105 °C.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | HOB |
| Product Reference | HOB 50-P/SP33 |
| Primary Nominal Current | 50 A |
| Supply Voltage | 3.14 ... 3.46 V |
| Measurement | current: DC, AC, pulsed... |
| Mounting | PCB Mount |
| Application Domain | Industrial |
| Electrical Data — HOB 50-P/SP33 | |
|---|---|
| Primary Nominal RMS Current (IPN) | 50 A |
| Primary Current, Measuring Range (IPM) | 125 A |
| Supply Voltage (UC) | 3.14 ... 3.46 V |
| Current Consumption (IC) | 16 ... 24 mA (typ 20 mA) |
| Accuracy & Dynamic Performance | |
|---|---|
| Accuracy @ IPN | 1.45 % of IPN |
| Linearity Error (εL) | 0.70 % of IPN |
| Electrical Offset Voltage (VO E) @ IP = 0 | −5 ... 5 mV |
| Response Time to 90 % of IPN Step | 200 ns |
| Frequency Bandwidth | 1000 kHz |
| Insulation Coordination | |
|---|---|
| RMS Voltage for AC Insulation Test (50 Hz, 1 min) Ud | 4.4 kV |
| Impulse Withstand Voltage (1.2/50 µs) UNi | 9.6 kV |
| Comparative Tracking Index (CTI) | 600 |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | −40 ... 105 °C |
| Ambient Storage Temperature (TA st) | −40 ... 105 °C |
| Mass (m) | 30 g |
| Standards & Certifications | |
|---|---|
| IEC 61010-1 | Compliance |
| IEC 61010-2-30 | Compliance |
| IEC 61800-3 | Compliance |
| IEC 61800-5-1 | Compliance |
| IEC 62109-1 | Compliance |
| UL 508 | 2018. |
Note: Specifications are taken from the official HOB 50-P/SP33 datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the HOB 50-P/SP33.
Outline dimensions, pin layout and connection diagrams of the HOB 50-P/SP33 are shown below.
| Outline Dimensions & Mechanical Data | |
|---|---|
| Mass | 30 g |
Note: All dimensions are in millimetres. Refer to the official datasheet for the complete dimension drawing.
Typical applications of the HOB 50-P/SP33.
Characteristic curve diagrams are not included in the HOB 50-P/SP33 datasheet; the relevant characteristics are the accuracy and dynamic performance data listed below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Accuracy @ IPN | 1.45 % of IPN |
| Linearity Error (εL) | 0.70 % of IPN |
| Response Time to 90 % of IPN Step | 200 ns |
| Frequency Bandwidth | 1000 kHz |
Note: For the full set of performance data, refer to the datasheet.
Other models of the HO Series share the same measurement principle, mounting concept and output interface family.
