Passive Harmonic Filters THDi 5% Widely Used In Variable Frequency Drive System

Short Description:

The passive harmonic filter uses the principle of electromagnetic induction and reactor, selects the filter capacitor with high performance and the filter device with high linearity, and combines the filter compensation system to absorb the main harmonic components in the system and compensate the reactive power at the same time.

The function of dynamic reactive power compensation and filtering is integrated into one, which can quickly follow the load change, and has three main functions: suppressing current fluctuation, absorbing harmonic and compensating reactive power. It is used to reduce non-sine wave current generated by inverters, servo drives, UPS, etc., in industrial power grids.


Product Detail

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Features

Modern electrical equipment imposes stringent demands on voltage stability and power quality. The power network has to be free from harmonics and other electrical disturbances. This is why Noker passive harmonic filter has come into being. Noker harmonic filters have been specially designed to eliminate the harmonics from the current absorbed by 6-pulse power converters, such as frequency inverter for motors, UPS, etc.,

These are essentially passive filters based on a series-parallel combination of inductaces and capacitors, adapted to filter the input of power converters.

1. Rreduction of the current wave's distortion towards the network and the rest of the installation

2. Compliance with the IEC 61000-3-4, IEC 61000-3-12, IEC 61800-3 and IEEE-519

3. Energy savings with the reduction of the root mean square current(RMS), thus reducing the kV*A demand

4. Less strain on equipment and increase of the working life of units above this location with the corresponding reduction of thermal losses generated

5. Limits current transients, preventing damages caused to the converter and overvoltage trips that affect production processes

6. Lower maintenance costs and saving cost for replacing worn-out machines

passive filters

Specification

Main characteristics
Norminal system voltage(ph-ph) 3*380 to 500Vac,(Others on request)
Frequency 50hz(60hz on request)
Rated load power(P) See table
Overload 1.5 times rated current 1min
Rated current See table
Residual THD ≤5% at full load
Voltage drop at rated current <2%
 Degree of protection  IP00 indoor(IP20/54 on request)
Ventilation Natural
Mounting On the floor
Operating temperature Ambient:-25℃--50℃
Relative humidity  80%

Technical

Filter Model System Voltage Rated Power
@ 400VA
Rated Current
@400VAC
(A)
Insulation Class Weight
(kg)
NKS-OSK-0003-4A5/05 3x380 to 500VAC 1.5 3 H  9
NKS-OSK-0005-4A5/05 3x380 to 500VAC 2.2 5 H  11
NKS-OSK-0008-4A5/05 3x380 to 500VAC 3.7 8 H  18
NKS-OSK-0011-4A5/05 3x380 to 500VAC 5.5 11 H  23
NKS-OSK-0014-4A5/05 3x380 to 500VAC 7.5 14 H  24
NKS-OSK-0020-4A5/05 3x380 to 500VAC 11 20 H  38
NKS-OSK-0027-4A5/05 3x380 to 500VAC 15 27 H  40
NKS-OSK-0031-4A5/05 3x380 to 500VAC 18.5 31 H  52
NKS-OSK-0038-4A5/05 3x380 to 500VAC 22 38 H  57
NKS-OSK-0052-4A5/05 3x380 to 500VAC 30 52 H  66
NKS-OSK-0064-4A5/05 3x380 to 500VAC 37 64 H  72
NKS-OSK-0082-4A5/05 3x380 to 500VAC 45 82 H  89
NKS-OSK-0100-4A5/05 3x380 to 500VAC 55 100 H  105
NKS-OSK-0129-4A5/05 3x380 to 500VAC 75 129 H  154
NKS-OSK-0154-4A5/05 3x380 to 500VAC 90 154 H  158
NKS-OSK-0188-4A5/05 3x380 to 500VAC 110 188 H  194
NKS-OSK-0224-4A5/05 3x380 to 500VAC 132 224 H  209
NKS-OSK-0275-4A5/05 3x380 to 500VAC 160 275 H  210
NKS-OSK-0316-4A5/05 3x380 to 500VAC 185 316 H  218
NKS-OSK-0341-4A5/05 3x380 to 500VAC 200 341 H  255
NKS-OSK-0375-4A5/05 3x380 to 500VAC 220 375 H  275
NKS-OSK-0431-4A5/05 3x380 to 500VAC 250 431 H  295
NKS-OSK-0489-4A5/05 3x380 to 500VAC 280 489 H  325
NKS-OSK-0552-4A5/05 3x380 to 500VAC 315 552 H  335
NKS-OSK-0629-4A5/05 3x380 to 500VAC 355 629 H  385
NKS-OSK-0730-4A5/05 3x380 to 500VAC 400 730 H  410
NKS-OSK-0787-4A5/05 3x380 to 500VAC 450 787 H  495
NKS-OSK-0852-4A5/05 3x380 to 500VAC 500 852 H  503
NKS-OSK-0963-4A5/05 3x380 to 500VAC 560 963 H  572
NKS-OSK-1174-4A5/05 3x380 to 500VAC 630 1174 H  668

Application

Passive harmonic filter application

The passive harmonic filter can be widely used as below:

Dc fast charging device

Heating ventilation and air conditioning unit

Exhaust air and pump system

Industrial automation and robotics equipment

Ac and DC motor drives, inverters

A device with a front six-pulse rectifier

Customer service

1. ODM/OEM service is offered.

2. Quick order confirmation.

3. Fast delivery time.

4. Convenient payment term.

At present, the company is vigorously expanding overseas markets and global layout. We are committed to becoming one of the top ten export enterprises in China’s electrical automatic product, serving the world with high-quality products and achieving a win-win situation with more customers.

Noker SERVICE2
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