High reliability dv/dt Output Filter

 Product Introduction

When the PWM inverter will produce high common-mode voltage of dv/dt when directly driving the motor,  resulting in bearing current and common-mode leakage current as well as severe electromagnetic interference 
(EMI). Especially when the inverter is connected to the motor with a long cable, the in uence of the distribution parameters of the cable will result in voltage re ection, which will produce over-voltage of over two times 
at the motor terminal, causing failure of the coil insulation. However, Wone dv/dt lters can reduce the rate of decay due to increase of the e ect voltage during transmission of the motor cable, and minimize the peak voltage generated at the motor terminal.

Product Application

The dV/dT lters are designed to protect the motor lter as peak voltage disastrous to the motor will be generated if the cable between the inverter and the motor is too long. The cable length depends on the switching times of the power semiconductor in the inverter and the size of the motor. A cable as short as 2.5m will result in peak voltage of the motor exceeding the rated value of the motor insulation system. However, the problem is even greater if the cable is too long, in which case you need to use a dV/dT lter to protect the motor from the devastating impact of the peak voltage.

Technical Speci cations

• Work Voltage：400V AC-1140V AC  

• Work Current：5~500A 

• Work Frequency：50-60Hz  

• Switching frequency：2~8KHz 

• Protection class：IP00-IP20 

• Insulation Class：class F,H 

• Operation Environment:-10~+45 ℃,rated value wont  Up to+55 ℃, above 45 ℃, for every 1 ℃ increase, the rated current decreases by 2%

• Maximum cable length：1000m 

• Max Current：1.5 × Rated current,continuous 60S

• Noise：≤65dB

• Temperature Rise：≤85K

• Dielectric strength: Core Coil 3000VAC/50Hz/5mA/10s no electric arcing puncture (factory test

• Insulation Resistor：1000VDC insulation resistance value≥100MΩ

• Under seal level 2000m 

• Running ambient temperature -25 ℃ ~ +45 ℃, comparative moisture not over 90%.

• With well-ventilated condition,ventilation devices shall be mounted if installatioh in panels

Applicable Standards

• IEC289: 1987 Reactor 

• GB10229-88 Reactor (eqvIEC289: 1987) 

• JB9644-1999 Reactors used 

• for semiconductor electrical driving 

Product Size

Technical Parameters

Remark：Dimension can be customization

Product Identi cation Code