Product Description
The LA 150-P is a closed-loop (compensated) current transducer utilizing the Hall effect. It is designed for the electronic measurement of currents including DC, AC, and pulsed currents, providing galvanic separation between the primary and secondary circuits. Key advantages include excellent accuracy, very good linearity, low temperature drift, optimized response time, and a wide frequency bandwidth. It offers no insertion losses and high immunity to external interference, along with current overload capability. This transducer is ideal for applications such as AC variable speed drives, static converters for DC motor drives, battery-supplied applications, Uninterruptible Power Supplies (UPS), Switched Mode Power Supplies (SMPS), and power supplies for welding applications within the industrial domain.
Product Attributes
- Brand: LEM
- Certifications: UL 508, CSA C22.2 NO. 14, EN 50178, IEC 61010-1
- Material: Insulating plastic case recognized according to UL 94-V0
Technical Specifications
| Parameter | Symbol | Unit | Value | Notes |
| Primary nominal rms current | IPN | A | 150 | |
| Primary current, measuring range | IPM | A | 0 .. 212 | |
| Measuring resistance @ 85 C | RM | 0 - 40 (@ 150 A max), 0 - 3 (@ 212 A max) with 12 V; 0 - 78 (@ 150 A max), 0 - 30 (@ 212 A max) with 15 V | ||
| Secondary nominal rms current | ISN | mA | 75 | |
| Conversion ratio | KN | 1 : 2000 | ||
| Supply voltage | UC | V DC | 12 .. 15 | (5 %) |
| Current consumption | IC | mA | 10 (@ 15 V) + IS | |
| Accuracy @ IPN, TA = 25 C | % | <0.5 | ||
| Linearity error | % | <0.1 | Typ | |
| Electrical offset current @ IP = 0, TA = 25 C | IOE | mA | 0.10 | |
| Magnetic offset current @ IP = 0 and specified RM, after an overload of 3 IPN | IOM | mA | 0.25 | |
| Temperature variation of IO | IOT | mA | 0.15 (Typ), 0.30 (Max) | -40 C .. +85 C |
| Reaction time | tra | ns | <300 | |
| Step response time (1) to 90 % of IPN | tr | ns | <500 | With a di/dt of 100 A/s. |
| di/dt accurately followed | di/dt | A/s | >100 | |
| Frequency bandwidth (-1 dB) | BW | kHz | DC .. 150 | |
| Ambient operating temperature | TA | C | -40 .. +85 | |
| Ambient storage temperature | TS | C | -40 .. +90 | |
| Resistance of secondary winding @ TA = 25 C | RS | 642 | ||
| Mass | g | <25 | ||
| Rms voltage for AC insulation test, 50 Hz/1 min | Ud | kV | 4.3 | |
| Impulse withstand voltage 1.2/50 s | W | kV | 8 | |
| Partial discharge extinction rms voltage @ 10 pC | Ue | kV | 1.3 | |
| Min creepage distance | dCp | mm | 8 | |
| Clearance | dCI | mm | 8 | |
| Comparative tracking index (group I) | CTI | 600 | ||
| Primary potential involved | V AC/DC | 600 | ||
| Max surrounding air temperature | TA | C | 85 | |
| Secondary supply voltage | UC | V DC | 12 .. 15 | |
| Output signal | ISN | mA | 75 |
2410121717_LEM-LA150-P_C5891287.pdf
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