APR Series
True RMS split core current sensors based on PRiME air-core technology.
APR Series – True RMS Split Core Current Transducers
The APR Series split?core current transducers are engineered for applications requiring True RMS measurement of AC currents, ensuring accurate results even with distorted or non?sinusoidal waveforms. Covering adjustable current ranges from 10 A to 400 A, APR sensors rely on PRiME (Rogowski) air?core technology and a split?core architecture for fast and non?intrusive installation.
APR sensors support multiple selectable output formats, including 0–5 V, 0–10 V, and 4–20 mA, and deliver an extended bandwidth of 30 Hz to 6 kHz, enabling precise measurement of fast?changing signals. Featuring an 18 mm aperture, APR devices are well adapted to demanding energy and automation applications where high?frequency components and waveform distortion must be measured accurately using True RMS sensing.
APR – Features and benefits
Main characteristics
- True RMS output, ensuring accurate measurement on distorted waveforms
- Split core design for non intrusive installation
- Selectable outputs, depending on the version:
- 0–5 V DC or 0–10 V DC (APR B10)
- 4–20 mA loop powered current output (APR B420L)
- Switch selectable measuring ranges
- DIN rail or panel mounting
- Insulating plastic case recognized according to UL 94 V0
- Designed to accurately measure VFD and SCR generated current waveforms
Benefits
- Large aperture for cables up to 18 mm diameter
- High insulation between primary and secondary circuits
- Eliminates insertion loss
- Accurate measurement of non?sinusoidal currents, thanks to True RMS sensing
- Easy installation
Typical applications
The APR Series is specifically engineered for demanding applications involving distorted or fast?changing waveforms, such as:
- VFD?controlled loads: Monitoring motor behavior and load conditions at the VFD output
- SCR?controlled loads: Accurate measurement of phase?angle?fired or burst?fired SCR systems
- Switching power supplies & electronic ballasts: True RMS sensing for precise input power measurement
LEM APR – Download & Technical Characteristic
| Product | Check stock | Document | Nominal value | Output Type | Secondary Nominal Signal Value | Op. Temperature |
|---|---|---|---|---|---|---|
| APR 50 B10 | Datasheet 3D | 10 A, 25 A, 50 A | Voltage | 0-5V | -20 to 60 °C | |
| APR 50 B420L | Datasheet 3D | 10 A, 25 A, 50 A | Current | 4-20mA | -20 to 60 °C | |
| APR 100 B10 | Datasheet 3D | 50 A, 75 A, 100 A | Voltage | 0-5V | -20 to 60 °C | |
| APR 100 B420L | Datasheet 3D | 50 A, 75 A, 100 A | Current | 4-20mA | -20 to 60 °C | |
| APR 200 B10 | Datasheet 3D | 100 A, 150 A, 200 A | Voltage | 0-5V | -20 to 60 °C | |
| APR 200 B420L | Datasheet 3D | 100 A, 150 A, 200 A | Current | 4-20mA | -20 to 60 °C | |
| APR 400 B10 | Datasheet 3D | 200 A, 300 A, 400 A | Voltage | 0-5V | -20 to 60 °C | |
| APR 400 B420L | Datasheet 3D | 200 A, 300 A, 400 A | Current | 4-20mA | -20 to 60 °C |
APR Sensors – ASK FOR SAMPLES / QUOTATIONS
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