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1.    產(chǎn)品選用須知（Product selection notice）：

1. HFL特別適用于VFD或其它6 脈沖整流器電源的輸入端，幾乎消除了諧波畸變；

   HFL is especially suitable for the input of VFD or other 6-pulse rectifier

   power supplies, almost eliminating harmonic distortion

 2. HFL實(shí)現(xiàn)更優(yōu)秀的THDI性能，提高電能效率，會(huì)讓您的系統(tǒng)完全滿足諧波標(biāo)準(zhǔn)

  （IEEE-519、EN61000-3-2等）要求

     HFL achieves better THDI performance and improves power efficiency, 

     allowing your system to fully meet harmonic standards (IEEE-519, EN61000-3-2, etc；

 3. HFL的所有電氣安裝和維護(hù)工作應(yīng)該由具備資格的電氣工程師操作，HFL和連接裝置必須接地；

     All electrical installation and maintenance work at the HFL should be performed by a 

     qualified electrical engineer, and the HFL and connection devices must be grounded

 4. HFL切斷電源后，需要等中間回路電容自行放電3分鐘，對(duì)前后級(jí)操作前，請(qǐng)使用萬用表確認(rèn)

     HFL進(jìn)出端子是否已經(jīng)放電完畢；

     After the HFL is powered off, wait for the capacitor in the middle loop to discharge for 

     3 minutes. Before performing operations on the front and rear stages, use a multimeter

     to check whether the inlet and outlet terminals of the HFL are discharged

 5. HFL與負(fù)載功率匹配使用時(shí)可以獲得最佳的濾波效果，功率較大的HFL可以用于功率較小的負(fù)載，

     但濾波效果會(huì)降低；

     The best filtering effect can be obtained when the HFL is matched with the load power. 

     The HFL with higher power can be used for the load with lower power, but the filtering effect will be reduced.

 6. HFL可為多臺(tái)VFD供電，但總負(fù)荷不得超過 HFL 的額定功率值

     The HFL can supply power to multiple VFDS, but the total load must not

     exceed the rated power value of the HFL

2.    技術(shù)數(shù)據(jù)（Technical data）：

2.    產(chǎn)品型號(hào)定義（Product model definition）：

3.電氣原理圖(Electrical schematic diagram)：

4.    典型性能曲線(Typical performance curve)：

5.    HFL使用前后電流波形&FFT解析對(duì)比

（Analysis and comparison of current waveforms &FFT before and after HFL use）：

6.    HFL選擇指導(dǎo)：(HFL Selection Guide)

1）HFL額定電流（HFLRated current）：

為了發(fā)揮HFL的最優(yōu)濾波性能，在選擇合適的HFL時(shí)，請(qǐng)根據(jù)變頻器所帶負(fù)載功率來選，以確定HFL的額定電流。

In order to play the optimal filtering performance of HFL, when selecting the appropriate HFL, please 

select according to the load power of the inverter to determine the rated current of HFL

 計(jì)算式（Calculation formula）：Irms=Pload/(Urms* EM * EVFD * EHFL *√3)

例（example）：

     電網(wǎng)電壓(Urms): 380V

     電網(wǎng)頻率（F）: 50Hz      

     電機(jī)功率(Pload): 160kW   

      電機(jī)效率(EM): 92%

      變頻器效率(EVFD): 95%

      HFL最低效率（EHFL）: 96%

      根據(jù)上述計(jì)算式得：290A，選擇大于或等于290A諧波濾波器（HFL05-0304A4005，額定電流304A）,

      實(shí)測(cè)結(jié)果如下：

      According to the above calculation formula: 290A, select more than or equal to 290A harmonic 

      filter (HFL05-0304A4005, rated current 304A), measured results are as follows

1）電容投切用接觸器(Capacitive switching contactor)：

       HFL濾波器在無負(fù)載的情況下，功率因數(shù)為0，電容器將產(chǎn)生約30%的超前無功電流。在無功電流不可

       接受的應(yīng)用情況下，可將交付默認(rèn)短接端子X1/Y1/Z1與X2/Y2/Z2斷開。另外，直接由發(fā)電機(jī)供電的系統(tǒng)，

       在設(shè)計(jì)中考慮無功電流非常重要，因?yàn)樵跓o負(fù)載或低負(fù)載運(yùn)行時(shí)，無功電流可使發(fā)電機(jī)過勵(lì)磁以致發(fā)電機(jī)

      輸出電壓升高，超過HFL和變頻器的允許電壓值。因此，在發(fā)電機(jī)直供電源電路中務(wù)必使用電容斷路接觸器。

      HFL filters in the case of no load, the power factor is 0, the capacitor will produce about 30% of the 

      lead reactive current. The delivery default shorting terminals X1/Y1/Z1 and X2/Y2/Z2 can be disconnected

      in an application where the reactive current is unacceptable. In addition, it is important to consider reactive 

     current in the design of systems powered directly by the generator, because during no-load or low-load 

     reactive current can overexcite the generator so that the output voltage of the generator increases beyond  

     the allowable voltage values of the HFL and frequency converter. Therefore, it is necessary to use capacitive  

     break contactors in the generator direct supply source circuit.

 建議：10%-20%負(fù)載時(shí)投切電容模組，重新投入電容時(shí)須間隔最少30S。

           Suggestion: Switch the capacitor module when the load is 10%-20%, and reinsert the capacitor at 

           least 30 seconds

 接觸器額定電流選擇：HFL額定電流50%以上（AC3型）

 Selection of rated current of contactor：HFL rated current above 50% (AC3 type)

 例：HFL05-0304A4005選擇接觸器的額定電流最小值為304*0.5=152A

       HFL05-0304A4005 Select a minimum rated current of the contactor of 152A

注意：使用接觸器投&切電容模組時(shí)，絕不能在全負(fù)載時(shí)連接電容，或在無負(fù)載時(shí)斷開電容。

         When using a contactor to cast and cut a capacitor module, the capacitor should never 

          be connected at full load or disconnected at no load.

 2）電流保險(xiǎn)絲（Current fuse）：

       電流保險(xiǎn)絲額定電流選擇范圍：1.8~2.5倍HFL額定電流

      Current Rated current range of the fuse：1.8~2.5 times HFL rated current

例：HFL05-0304A4H5選擇電流保險(xiǎn)絲額定電流范圍為304*1.8~2.5=547~760A

Fxample ：HFL05-0304A4H5 Select current The rated current of the fuse ranges from 547 to 760A