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1.產(chǎn)品概述(Product Introduction)

PWM逆變器直接驅(qū)動電機(jī)時會產(chǎn)生較高dv/dt的共模電壓,并由此產(chǎn)生軸承電流和共模漏電流以及嚴(yán)重的電磁干擾(EMI).特別是當(dāng)逆變器通過長線電纜與電機(jī)連接時,由于電纜中分布參數(shù)的影響,會在電機(jī)端產(chǎn)生電壓反射現(xiàn)象,從而在電機(jī)端會產(chǎn)生2倍以上的過電壓,導(dǎo)致線圈絕緣失敗. dv/dt濾波器可以降低電機(jī)電纜傳輸線效應(yīng)電壓的增大而衰減率，并最大限度地減少在電機(jī)端子上所發(fā)生的峰值電壓。

When PWM inverter drives the motor directly, it produces a high common mode voltage of dv/dt, resulting in bearing current and common mode leakage current, as well as serious electromagnetic interference (EMI). Especially when the inverter is connected to the motor through the long line cable, due to the influence of the distribution parameters in the cable, the voltage reflection phenomenon will occur at the motor end, which will produce more than 2 times the overvoltage at the motor end, resulting in coil insulation failure. dv/dt filter can reduce the attenuation rate of the increase of the transmission line effect voltage of the motor cable. And minimize the peak voltage that occurs on the motor terminals

2.產(chǎn)品應(yīng)用(Product Application)

dv/dt濾波器是設(shè)計用于保護(hù)電機(jī)的濾波器，由于變頻器與電機(jī)之間運行電纜過長會引起對電機(jī)產(chǎn)生毀滅性影響峰值電壓。電纜的長度取決于用在變頻器中的電力半導(dǎo)體的開關(guān)次數(shù)和電機(jī)的大小，如果電纜短到2.5米則會導(dǎo)致電機(jī)承受的峰值電壓超過電機(jī)絕緣系統(tǒng)的額定值。然而，如果電纜太長則問題更大，在這種情況下就需要用dv/dt濾波器來保護(hù)電機(jī)不受峰值電壓的毀滅性影響。

The dv/dt filter is a filter designed to protect the motor, due to the length of the running cable between the inverter and the motor can cause a devastating effect on the motor peak voltage. The length of the cable depends on the number of switches of the power semiconductor used in the inverter and the size of the motor, if the cable

is short to 2.5 meters, it will cause the peak voltage of the motor to exceed the rating of the motor insulation system. However, the problem is even greater if the cable is too long, in which case dv/dt filters are needed to protect the motor from the devastating effects of peak voltages.

3.技術(shù)規(guī)格(TechnicalSpecifications)

1.最大工作電壓:400V AC-1140V AC

2.額定電流:5~500A

3.頻率:50-60Hz

4.開關(guān)頻率:2~8KHz

5.防護(hù)等級:IP00-P20

6.絕緣等級:class F,H

7.使用環(huán)境:-10…+45 ℃,額定值不會降低。最高可達(dá)+55℃，在45℃以上，每升高1℃，額定電流降低2%

8.最大電纜長度:1000m

9.最大電流:1.5x額定電流，持續(xù)60S

10.噪音:<65dB

11.溫升:<85K

12.抗電強(qiáng)度:鐵芯-繞組 3000VAC/50Hz/5mA/10s無飛弧擊穿(工廠測試)

13.絕緣電阻:1000VDC絕緣阻值≥100MΩ

14.海拔高度不超過2000米。

15.運行環(huán)境溫度-25℃~+45℃，相對漫度不超過90%。

16.周圍無有害氣體，無易燃易爆物品。

17.周圍環(huán)境應(yīng)有良好的通風(fēng)條件，如裝在柜內(nèi)，應(yīng)加裝通風(fēng)設(shè)備。

1. Maximum operating voltage :400V AC-1140V AC

2. Rated current :5~500A

3. Frequency :50-60Hz

4. Switching frequency :2~8KHz

5. Protection level :IP00-P20

6. Insulation class :class F,H

7. Use environment :-10... +45 ℃, the rating will not be reduced. Up to +55 ° C, above 45 ° C, each increase of 1 ° C, the rated current is reduced by 2%

8. Maximum cable length :1000m

9. Maximum current :1.5x rated current, lasting 60S

10. Noise :<65dB

11. Temperature rise :<85K

12. Electrical strength: Core - winding 3000VAC/50Hz/5mA/10s no flare breakdown (factory test)

13. Insulation resistance :1000VDC insulation resistance ≥100MΩ

14. The altitude does not exceed 2000 meters.

15. The operating environment temperature is -25℃~+45℃, and the relative diffuse is not more than 90%.

16. There are no harmful gases around, no inflammable and explosive materials.

17. The surrounding environment should have good ventilation conditions. If installed in the cabinet, ventilation equipment should be installed.

4.執(zhí)行標(biāo)準(zhǔn)(Applicable standards)

IEC289:1987 Reactor

GB10229-88 Reactor(eqvIEC289:1987)

JB9644-1999 Reactors used for semiconductor electrical driving

5.產(chǎn)品選型表（Product selection table）

6.產(chǎn)品尺寸圖(Product size)