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Open Loop transducer using the Hall effect
| Primary Current, Measuring Range | ± 250 A |
| Supply Voltage | 4.75 .. 5.25 V |
| Sensitivity | 8 mV/A |
| Operating Temperature Range | −40 .. 125 °C |
| Isolation Test Voltage | 2.5 kV |
| Primary Nominal Current (IPN) | ± 250 A |
Ferrite material magnetic core allowing high frequency primary current ripple with low self-heating.
The HAM 250-S04 is an open loop current transducer from LEM delivering an instantaneous output voltage of 2.5 V.
It offers excellent accuracy and very good linearity. Typical applications include Ferrite material magnetic core allowing high frequency primary current ripple with low self-heating.
Key characteristics from the official datasheet: linearity error ± 1 %; operating temperature −40 .. 125 °C.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | HAM |
| Product Reference | HAM 250-S04 |
| Primary Nominal Current | ± 250 A |
| Supply Voltage | 4.75 .. 5.25 V |
| Measurement | — |
| Mounting | Busbar Mount |
| Application Domain | Ferrite material magnetic core allowing high frequency primary current ripple with low self-heating |
| Electrical Data — HAM 250-S04 | |
|---|---|
| Primary Nominal Current (IPN) | ± 250 A |
| Primary Current, Measuring Range (IPM) | ± 250 A |
| Supply Voltage (UC) | 4.75 .. 5.25 V |
| Current Consumption (IC) | 15 .. 20 mA |
| Sensitivity | 8 mV/A |
| Output Offset Voltage (VO E) | 2.5 V |
| Accuracy & Dynamic Performance | |
|---|---|
| Ratiometricity Error | ± 0.5 % |
| Sensitivity Error | ± 0.6 % |
| Linearity Error | ± 1 % |
| Delay Time (tD) | 2 µs |
| Output Noise | 14 mV |
| Insulation Coordination | |
|---|---|
| RMS Voltage for AC Insulation Test (50 Hz, 1 min) Ud | 2.5 kV |
| Creepage Distance (dCp) | 4 mm |
| Clearance (dCI) | 4 mm |
| Comparative Tracking Index (CTI) | PLC3 |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | −40 .. 125 °C |
| Ambient Storage Temperature (TA st) | −40 .. 125 °C |
Note: Specifications are taken from the official HAM 250-S04 datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the HAM 250-S04.
Outline dimensions, pin layout and connection diagrams of the HAM 250-S04 are shown below.
Note: All dimensions are in millimetres. Refer to the official datasheet for the complete dimension drawing.
Typical applications of the HAM 250-S04.
The characteristic curves of the HAM 250-S04 from the official datasheet are shown below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Sensitivity | 8 mV/A |
| Sensitivity Error | ± 0.6 % |
| Linearity Error | ± 1 % |
Note: Refer to the datasheet for the complete set of characteristic curves.
