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Open Loop transducer using the Hall effect
| Primary Current, Measuring Range | ± 100 A / ± 350 A |
| Supply Voltage | 4.75 .. 5.25 V |
| Sensitivity | 20 / 5.7 mV/A |
| Operating Temperature Range | −10 .. 65 °C / −40 .. 125 °C |
| Isolation Test Voltage | 2.5 kV |
| Primary Nominal Current (IPN) | ± 100 A / ± 350 A |
Output voltage: full ratio-metric (in sensitivity and offset). H P a constant b constant.
The DHAB S/157 is an open loop current transducer from LEM for the electronic measurement of DC, AC, or pulsed currents, with galvanic isolation, delivering an instantaneous output voltage of 2.5 V.
Typical applications include Output voltage: full ratio-metric (in sensitivity and offset). H P a constant b constant.
Key characteristics from the official datasheet: frequency bandwidth 1.1 kHz; operating temperature −10 .. 65 °C / −40 .. 125 °C.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | DHAB |
| Product Reference | DHAB S/157 |
| Primary Nominal Current | ± 100 A / ± 350 A |
| Supply Voltage | 4.75 .. 5.25 V |
| Measurement | DC, AC, or pulsed currents |
| Mounting | Busbar Mount |
| Application Domain | Output voltage: full ratio-metric (in sensitivity and offset) |
| Electrical Data — DHAB S/157 | |
|---|---|
| Primary Nominal Current (IPN) | ± 100 A / ± 350 A |
| Primary Current, Measuring Range (IPM) | ± 100 A / ± 350 A |
| Supply Voltage (UC) | 4.75 .. 5.25 V |
| Current Consumption (IC) | 15 .. 20 mA |
| Sensitivity | 20 / 5.7 mV/A |
| Output Offset Voltage (VO E) | 2.5 V |
| Load Resistance (RL) | 10 kOhm |
| Insulation Resistance (RINS) | 500 MOhm |
| Accuracy & Dynamic Performance | |
|---|---|
| Ratiometricity Error | ± 0.6 % |
| Frequency Bandwidth | 1.1 kHz |
| Output Noise | ± 10 mV |
| Insulation Coordination | |
|---|---|
| RMS Voltage for AC Insulation Test (50 Hz, 1 min) Ud | 2.5 kV |
| Creepage Distance (dCp) | 3.1 mm |
| Clearance (dCI) | 3.1 mm |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | −10 .. 65 °C / −40 .. 125 °C |
| Ambient Storage Temperature (TA st) | −40 .. 125 °C |
| Mass (m) | 82 g |
Note: Specifications are taken from the official DHAB S/157 datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the DHAB S/157.
Outline dimensions, pin layout and connection diagrams of the DHAB S/157 are shown below.
| Outline Dimensions & Mechanical Data | |
|---|---|
| Mass | 82 g |
Note: All dimensions are in millimetres. Refer to the official datasheet for the complete dimension drawing.
Typical applications of the DHAB S/157.
The characteristic curves of the DHAB S/157 from the official datasheet are shown below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Sensitivity | 20 / 5.7 mV/A |
| Frequency Bandwidth | 1.1 kHz |
| Reference Conditions | |
|---|---|
| Ambient Temperature (TA) | 25 °C, unless otherwise noted |
| Output Load Resistance (RL) | 10 kOhm |
Note: Refer to the datasheet for the complete set of characteristic curves.
Other models of the DHAB Series share the same measurement principle, mounting concept and output interface family.
