Authorized Distributor
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AC Current Transducer
| Supply Voltage | self-powered |
| Operating Temperature Range | −20 … +60 °C |
| Isolation Test Voltage | 3.5 kV |
| Frequency Bandwidth (BW) | 50/60 Hz |
| RMS Voltage for AC Insulation Test (50 Hz, 1 min) Ud | 3.5 kV |
| Creepage Distance (dCp) | 6 mm |
Automation and Supervision Current measurement for process regulation by distributed PLCs software), Safety and Condition Monitoring Load monitoring for protection systems and predictive maintenance (e.g. conveyers, pumps or HVAC motors).
The AT 20 B5 is a None current transducer from LEM.
Typical applications include Automation and Supervision Current measurement for process regulation by distributed PLCs software) and Safety and Condition Monitoring Load monitoring for protection systems and predictive maintenance (e.g. conveyers, pumps or HVAC motors).
Key characteristics from the official datasheet: frequency bandwidth 50/60 Hz; operating temperature −20 … +60 °C.
| General Information | |
|---|---|
| Manufacturer | LEM |
| Product Series | AT |
| Product Reference | AT 20 B5 |
| Supply Voltage | self-powered |
| Measurement | — |
| Mounting | — |
| Application Domain | Energy, Automation |
| Electrical Data — AT 20 B5 | |
|---|---|
| Supply Voltage (UC) | self-powered |
| Accuracy & Dynamic Performance | |
|---|---|
| Frequency Bandwidth (BW) | 50/60 Hz |
| Insulation Coordination | |
|---|---|
| RMS Voltage for AC Insulation Test (50 Hz, 1 min) Ud | 3.5 kV |
| Creepage Distance (dCp) | 6 mm |
| Clearance (dCI) | 6 mm |
| Comparative Tracking Index (CTI) | 600 |
| Overvoltage Category / Pollution Degree | Over voltage category CAT · Pollution degree PD2 |
| Environmental & Mechanical Characteristics | |
|---|---|
| Ambient Operating Temperature (TA) | −20 … +60 °C |
| Ambient Storage Temperature (TA st) | −20 … +85 °C |
| Mass (m) | 90 g |
| Case Material | Insulating plastic case recognized according to UL 94-V0. |
Note: Specifications are taken from the official AT 20 B5 datasheet. Parameters that could not be confirmed from the datasheet are marked UNVERIFIED.
Official technical documentation for the AT 20 B5.
Outline dimensions, pin layout and connection diagrams of the AT 20 B5 are shown below.
| Outline Dimensions & Mechanical Data | |
|---|---|
| Mass | 90 g |
| Case Material | Insulating plastic case recognized according to UL 94-V0. |
Note: All dimensions are in millimetres. Refer to the official datasheet for the complete dimension drawing.
Typical applications of the AT 20 B5.
Characteristic curve diagrams are not included in the AT 20 B5 datasheet; the relevant characteristics are the accuracy and dynamic performance data listed below.
| Accuracy & Dynamic Characteristics | |
|---|---|
| Frequency Bandwidth (BW) | 50/60 Hz |
Note: For the full set of performance data, refer to the datasheet.
Other models of the AT Series share the same measurement principle, mounting concept and output interface family.
