产品特点 FEATURES

1 Brand: LEM (莱姆), Model: DHR200 C420

2 Function: Electronic measurement of DC and distorted AC waveform currents, with galvanic isolation between primary (power) and secondary (measurement) circuits

3 Output: True RMS 4-20mA DC signal

4 Primary electrical parameters: Nominal DC & AC current (I_pn) 200A, maximum peak AC current (I_pk)800A

5 Electrical specifications: Load resistance <300Ω, supply voltage range +20V DC to +50V DC, current consumption ≤30mA + output current, output current limitation <25mA

6 Performance indicators: Accuracy ±1% of I_pn at 25°C (excluding offset), linearity error ±1.0% of I_pn, output offset ±1.0mA at 25°C, frequency bandwidth DC to 20,000 Hz (±1dB)

7 Isolation characteristics: Rated isolation voltage300V (reinforced isolation per IEC61010-1), impulse withstand voltage4.0kV, creepage distance7.2mm, clearance distance7.3mm

8 Mechanical design: Large aperture compatible with cables up to0.52mm², panel mounting (M4 screws, torque0.75Nm ±20%), protection degree IP20

9 Certifications: CE, RoHS, UL recognized,5-year warranty

使用场景 APPLICATIONS

1 VFD controlled loads: Monitor the operation status of VFD outputs and attached loads (e.g., motors)

2 SCR controlled loads: Accurate measurement of phase angle fired or burst fired currents (faster response than average measurement)

3 Switching power supplies and electronic ballasts: True RMS sensing for precise power measurement

4 Energy and automation domain: Industrial energy management systems, factory automation equipment, building power monitoring systems

注意事项 PRECAUTIONS

1 Installation and operation must be performed by qualified personnel with appropriate training

2 Observe all relevant national regulations during installation and operation

3 Use the transducer in equipment complying with applicable standards and safety requirements

4 Beware of electrical shock: Some parts may carry hazardous live voltage; take necessary protective measures

5 Do not operate if the jaw opening (split core version) is open or the enclosure is not closed

6 Disconnect main power before installation/maintenance unless no live parts are nearby and regulations are followed

7 Optimal dynamic performance when primary busbar fully fills the aperture

8 Primary busbar temperature must not exceed80°C

DHR 200 C420-PDF数据手册-参考资料