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原FMD系列產品已升級換代為FML系列,國內常用的原FMD4050的替代型號為FML4460,本公司常備FML4460現貨,歡迎有該產品需求的客戶隨時與我們聯系。同一產品適用于不同電壓等級,為客戶提供更多便利;產品尺寸與原來相同,便于用戶替換原使用產品,重量比原來產品有所下降;產品顏色由原來的藍色改變為灰白色(RAL7035),詳細產品資料請點擊這里瀏覽或來信來電咨詢。點擊下載產品樣本

HAF ABSORPTION FILTER
Description
Harmonic absorption filters are used when it is necessary to reduce the harmonic voltage and current distortion in the supply system. Absorption filters are formed by capacitors connected in series with reactors, tuned to the frequency of the harmonic to be suppressed. Filters are assembled in metal cabinets and include contactors and high rupture capacity fuses for short circuit protection. Thermal protection of the filter is achieved by means of thermal sensors located in the core of the reactors.
Technical Characteristics
Tensión nominal/Rated voltages......230, 400, 415, 480 V
Frecuencia de red/ ............................50 Hz (60 Hz)
Network frequency
Sintonización filtros/Filter tuning .....5 o, 7o , 11o, 13o
Regulación/Regulation ...................... by current or by harmonics
Grado de protección/ ......................
Degree of protection
Construcción/Construccion ................Armario metálico/Metal cabinet
Color armario/Cabinet colour ........Gris/Grey RAL 7035
Instalación/Installation...................... Indoor (floor mounting)
Normas/Standards ............................, ,

Standard steps


50 Hz 400V

Absorption Filter tuning

Maximum harmonic current

QN (kvar)

Irms (A)

5o, 7o, 11o, 13o

40

20

50

5o, 7o, 11o, 13o

80

41

100

Harmonic Filters
These filters are used when the main objective is not the reactive power compensation at the fundamental frequency, but to reduce the harmonic distortion in the supply system.
Among the problems caused by harmonics and which may make their suppression necessary, are the following:
Interferences in telecommunications.
Distortion on the mains voltage.
Disturbances in electronic systems.
Erratic operation of control and protection relays .
Failures in transformers and motors, due to overheating caused by losses on the core.
Overheating of protective fuses to the point where a minor spike on the line causes them to blow.
It should be pointed out that the impedance of all the filters is capacitive below its tuning frequency, whereby they also contribute, even if in a small scale, to the reactive power compensation at the fundamental frequency.
Installation of filters produces a modification on the topology of the electrical supply system. For this reason, the design of filters must be done with regard to an accurate analysis and study of the whole system.
According to the application, there are different types of filters:
3rd harmonic filter HBF-T
Isolation filter
Absortion filter HAF
High pass filter HPF
Active filter SINAF 2.0

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