HAM - Automotive current sensors
The HAM series is for the electronic measurement of DC, AC or pulsed currents in automotive applications with galvanic separation between the primary circuit (high power) and the secondary circuit (electronic circuit).
The HAM series gives you the choice of having different current measuring ranges in the same housing (from ±100 A up to ±300 A).
The HAM 250-S04 is designed for high frequency applications current with high primary current ripple.
HAM automotive current sensors are hall effect open loop sensors.
HAM – Features and benefits
Main characteristics
- Hall Effect open loop sensors
- High voltage application
- Unipolar +5 V DC power supply
- Primary current measuring range up to ±250 A
- Maximum RMS primary admissible current: defined by busbar to have T < +150 °C
- Operating temperature range: −40 °C < T < +125 °C
- Output voltage: full ratio-metric (in sensitivity and offset)
- Ferrite material magnetic core allowing high frequency primary current ripple with low self-heating
Benefits
- Excellent accuracy
- Very good linearity
- Very low thermal offset drift
- Very low thermal sensitivity drift
- High frequency bandwidth
- Non insertion losses
- Very fast delay time
Typical applications
HAM current sensors are to be used on automotive applications, especially for automotive motor control:
- DC / DC converter for fuel cell, for xEV or PHEV
- DC / AC Inverter
LEM HAM – Download & Technical Characteristic
| Product | Order | Document | Primary nominal RMS voltage | Supply Voltage range | Op. Temperature |
|---|---|---|---|---|---|
| HAM 250-S04 | Datasheet 3D Application Note | -250 A, 250 A | 5 to 5 | -40 to 125 °C |
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