LA 55-P current transducer is designed for the electronic measurement of currents: DC, AC, pulsed., with a galvanic isolation between the primary circuit (high power) and the secondary circuit (electronic circuit).
The LA55-P is a Hall‑effect based current transducer offering galvanic isolation between a high‑power primary circuit and a low‑power secondary circuit. It supports DC, AC and pulsed currents with a primary nominal RMS current of 50 A and a measuring range up to 70 A.
The manual details electrical data, mechanical dimensions, mounting instructions, and application examples such as variable‑speed drives, UPS systems, and welding power supplies. Features include closed‑loop compensation, high accuracy, low temperature drift, and wide frequency bandwidth.
| Primary nominal RMS current | 50 A |
|---|---|
| Primary current measuring range | 0 .. +70 A |
| Secondary nominal RMS current | 50 mA |
| Conversion ratio | 1:1000 |
| Supply voltage | +12..15 V |
| Current consumption | 10 µA @+15 V |
| Accuracy (typical) | ±0.65 % |
| Linearity | < 0.15 % |
| Frequency bandwidth (‑1 dB) | DC .. 200 kHz |
| Mass | 18 g |
The device measures primary currents from 0 A up to +70 A.
It operates from a supply voltage of +12 V to +15 V.
The transducer provides a 1:1000 conversion ratio.
Typical accuracy is ±0.65 % at 25 °C.