address:No.10, Lane 669, Min Ta Road, Songjiang District, Shanghai, China
phone:189-1713-2726
email:qianghaibin@sh-yhcd.com
The voltage of the converter driving the motor is a pulse waveform (PWM waveform), which contains rich high-frequency components. When the connection between the converter and the motor exceeds 30 meters, high-frequency driving voltage pulses will have many adverse effects on the motor, including: shortening the life of the motor bearing, insulation breakdown of the motor stator winding, etc. For example, for an converter with a rated voltage of 380V, the spike amplitude of the pulse voltage can exceed 1200V. This spike voltage impacts the motor thousands of times per second, quickly causing damage to the motor's stator winding. In addition, the output pulse voltage of the converter will also generate bearing current in the bearing of the motor. If the bearing current flows for a long time, it will cause damage to the motor bearing.
尖峰電壓吸收原理 | 實時檢測尖峰電壓，將電能轉(zhuǎn)變成熱能，耗散到空間 |
軸承電流吸收方式 | 高頻共模電流旁路網(wǎng)絡(luò) |
額定電壓 | 變頻器的額定電壓為400VAC、690VAC |
變頻器載波頻率 | 小于12kHz |
變頻器最大頻率 | 1500kW |
允許電機電纜長度 | 300m |
工作時殼體溫度 | 小于90℃，環(huán)境溫度為50℃ |
絕緣電阻Insulation Resistance | ≥100MΩ |
抗電強度Dielectric Strength | 導(dǎo)電部分與外殼承受2000VAC,時間60s,無電弧擊穿 |
使用環(huán)境Operation Environment | -10 ~ +50℃，最高海拔3000米，最大相對濕度95% |
備注：如有超出上述參數(shù)，請于我公司聯(lián)系。Remark: Customized if necessary.
The VTA spike voltage absorber is an innovative product that protects motor stator winding insulation and bearings. HVT is installed in parallel on the power input terminal of the motor, which can effectively absorb the spike voltage and bearing current generated on the motor, which greatly extend the life of the motor.
Compared with the traditional dv/dt filter or sine wave filter, the advantages of VTA are:
1. It is easy to be installed in parallel with the motor
2. No voltage drop, no reducing torque, and no effect on the control of the converter to the motor
3. Small size, light weight, and high cost performance, especially for high-power motors, the advantages are more obvious
4. It is easy to choose, has nothing to do with the speed and carrier frequency of the motor, and do not need to match the motor with a specific power
5. Intelligent control, automatically adjust the absorption power according to the carrier frequency and cable length to ensure the best effect
6. Built -in insurance, automatically remove from the system when faulty happens, at the same time, the fault state is displayed on the panel
7. Full-seal design adapts to the harsh industrial site environment
1. Prevent harmonics from burning the stator winding
2. Quickly reduce circuit peak voltage
3. Intelligently control the energy absorption valve to play the maximum absorption ability
4. IGBT technology controls spike voltage energy absorption, by which spike voltage can be absorbed cleanly and thoroughly
5. Bearing current absorption circuit greatly extends the life of the bearings
6. Intelligent control module does not need external power supply
7. Work status panel display provide the working status at any time
8. Be installed in parallel with the motor make the wiring simple
