DHR Family
Compact and versatile transducers for high AC and DC currents
DHR - Compact Current sensors
The DHR product family is engineered for the measurement of DC, AC, and pulse currents, featuring nominal values ranging from 100 to 1000 A True RMS with signal conditioning.
The range of DHR current sensors includes various output types, such as 4-20 mA, 0-5 V, or 0-10 V. Specifically, DHR C5 and DHR C10 offer a 0-5 V and 0-10 V output, while DHR C420 provides a 4-20 mA current output.
Irrespective of the specific model, DHR current transducers are designed to cover a broad bandwidth range, spanning from DC 20 to 6000 Hz.
Leveraging Hall effect sensor technology (open loop), DHR ensures dependable and precise current measurements in applications related to smart grids and automation.
DHR – Features and benefits
Main characteristics
- VFD and SCR waveforms current measurement
- True RMS output
- Panel mounting
- Eliminates insertion loss
- Insulating plastic case recognized according to UL 94-V0
Benefits
- Large aperture for cable up to ⌀ 32 mm
- High insulation between primary and secondary circuits
- Easy installation
Typical applications
DHR sensors, known for their capability to measure DC, AC, and pulse currents, are frequently employed in a variety of smart grid and automation applications. Some instances of these applications include:
- VFD Controlled Loads: VFD output indicates how the motor and attached load are operating
- SCR Controlled Loads: Accurate measurement of phase angle fired or burst fired (time proportioned) SCRs. Current measurement gives faster response than temperature measurement
- Switching Power Supplies and Electronic Ballasts: True RMS sensing is the most accurate way to measure power supply or ballast input power
LEM DHR – Download & Technical Characteristic
| Product | Document | Primary nominal RMS voltage | Secondary Nominal Signal Value | Op. Temperature |
|---|---|---|---|---|
| DHR 100 C10 | Datasheet | 100 A | 0-10V | -40 to 70° C |
| DHR 100 C420 | Datasheet 3D | 100 A | 4-20mA | -40 to 70° C |
| DHR 200 C10 | Datasheet | 200 A | 0-10V | -40 to 70° C |
| DHR 200 C420 | Datasheet 3D | 200 A | 4-20mA | -40 to 70° C |
| DHR 200 C5 | Datasheet | 200 A | 0-5V | -40 to 70° C |
| DHR 300 C10 | Datasheet 3D | 300 A | 0-10V | -40 to 70° C |
| DHR 300 C420 | Datasheet 3D | 300 A | 4-20mA | -40 to 70° C |
| DHR 300 C5 | Datasheet | 300 A | 0-5V | -40 to 70° C |
| DHR 400 C10 | Datasheet | 400 A | 0-10V | -40 to 70° C |
| DHR 400 C420 | Datasheet 3D | 500 A | 4-20mA | -40 to 70° C |
| DHR 500 C10 | Datasheet | 500 A | 0-10V | -40 to 70° C |
| DHR 500 C420 | Datasheet 3D | 500 A | 4-20mA | -40 to 70° C |
| DHR 600 C10 | Datasheet 3D | 600 A | 0-10V | -40 to 70° C |
| DHR 600 C420 | Datasheet 3D | 600 A | 4-20mA | -40 to 70° C |
| DHR 600 C5 | Datasheet | 600 A | 0-5V | -40 to 70° C |
| DHR 1000 C10 | Datasheet | 1000 A | 0-10V | -40 to 70° C |
| DHR 1000 C420 | Datasheet 3D | 1000 A | 4-20mA | -40 to 70° C |
DHR Sensors – ASK FOR SAMPLES / QUOTATIONS
Looking to receive samples or a quotation? Please click on the contact button below and provide us with the information you need on this product series. Our sales team will get back to you shortly.