Dv/Dt Filter

Dv/Dt filter

Production introduction
The high dv/dt common mode voltage will be generated by PWM inverter, and will bring bear current, common leakage current and series electromagnetic interface (EMI) problems. Especially when the inverter is connect to the motor with a long cable, the influence of distribution parameters of cable will result in voltage reflection in motor terminals, which will produce 2 times over voltage in motor, and causing failure of the coil insulation.
However drino Dv/Dt filter can reduce the rate of decay due to increase of the effect voltage during tramsmission of the motor cable, and minimize the peak voltage generated at the motor terminals.


Production Application
The Dv/Dt filer are designed to protect the motor, because the long cable connected between inverter and motor will generated peak voltage, which will cause damage in disastrous. Connecting with dv/dt filter can make motor avoiding damaging, which have long cable connecting.

Working condition:
1. Working voltage: 220V/1140V
2. Working frequency: 50/60Hz
3. Rated current: 3A to 1600A
4. Carrier frequency: 2 to 8KHz,
5. Insulation class: Class F. H
6. Operation environment: No need derated suing during -10℃to 45℃, if work in above 45℃, the rated current will be reduce 2% for every 1℃rising.
7. Protection class: IP00-IP22.
8. Voltage drop: < 4%, if large than this value, the output torque of inverter will be lower.
9. overload tolerance capability: 1.5% rated current for 60s.
10. Noise: ≤65DB.
11. Temperature rise：≤85K
12: Dielectric strength: Steel wire core 3000VAC/50Hz/5mA/10s no electric arcing puncture.
13: Insulation resistor: 1000VDC insulation resistance value ≥100MΩ.
14: working under sea level below 2000m
15. Running condition: temperature-25℃to 45℃, comparative moisture not over 90%.
16: No hazardous gas, no inflammable and explosive
17: Good ventilation.

Dimension