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Splend Electric (Beijing) Co., Ltd

Tel:+86  10  50842888               
Fax:+86  10  50842886
E-mail:
splend@splendpower.com

Http:www.splendpower.com

Add:52A, No.17 Jing Sheng South 4th Street, Zhongguancun Science and

          Tec hnology Park, Tongzhou District, Beijing-China

 

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                             Copyright: Splend Electric (Beijing) Co., LtdBeijing ICP:110301000273  

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ACTIVE HARMONIC FILTERS

ACTIVE HARMONIC FILTERS

Splend Electric Series APF is connected in parallel with non-linear loads, and uses one set of current transformers (CT) to detect the load current. It calculates each order harmonic current by FFT algorithms in its DSP microchips, and then generates a compensating current with the same amplitude but opposite phase angles to the detected harmonic current, which cancels out the original load harmonics. The Splend Electric series APF not only eliminates harmonic current from the load side, but it also mitigates harmonic voltage caused by harmonic currents. The APF system can also improve power factor (PF) and correct load imbalances in the power system.
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Product description

APF Principle

Splend Electric Series APF is connected in parallel with non-linear loads, and uses one set of current transformers (CT) to detect the load current. It calculates each order harmonic current by FFT algorithms in its DSP microchips, and then generates a compensating current with the same amplitude but opposite phase angles to the detected harmonic current, which cancels out the original load harmonics.

The Splend Electric series APF not only eliminates harmonic current from the load side, but it also mitigates harmonic voltage caused by harmonic currents. The APF system can also improve power factor (PF) and correct load imbalances in the power system.

 

APF Structure

Splend Electric Series APF has a modular design. Usually the Delta active power filter system consists of one or several APF modules and an optional Liquid Crystal Monitor & Control Panel (SD-8T). Each APF module is an independent harmonic filtering system, and users can change the harmonic filtering system rating by adding or removing APF modules.

According to the mounting type, Splend Electric series APF can be divided into Modular APF and Wall-mounted APF.

 

Modular APF

APF modules and an SD-8T panel can be embedded in Splend's standard APF cabinet or a customized cabinet. There are breakers, cable terminals and Surge Protection Device (SPD) in the APF cabinet.

According to cable terminal type, a modular APF can be divided into two types:

  • Draw type modular APF (hot-swappable)
  • Fixed type modular APF (not hot-swappable)

 

Wall-mounted APF

Splend's Wall-mounted APF can be installed on a wall, which is suitable for low rating applications, and an optional SD-8T panel can be fixed on the all-mounted APF according to customer requirements.

 

Design

  • Multifunctional: Harmonic, reactive power and imbalance compensation
  • High harmonic filtering rate: Up to 98%
  • Excellent reactive compensation: High speed, Precise (-0.99≤PF≤0.99), Step-less, Bi-directional (capacitive and inductance) compensation
  • Excellent imbalance correction: Both negative and zero sequence, mitigates neutral current
  • Wide input voltage & frequency range, adapts to tough electrical environments
  • Low thermal loss (≤3% of rated APF kVA), efficiency ≥ 97%
  • High stability: Infinite impedance to grid, avoids harmonic resonance problems
  • Flexible application: Modular design, embedded in standard or customized cabinet
  • Easy installation and maintenance: Plug-in installation for APF module replacement and expansion
  • Wide capacity range: 30A~600A for a single cabinet, up 10 cabinets in parallel
  • Environmental adaptability: -10~50°C temperature, compatible with diesel generator
  • Complete protection: Grid Over/Under voltage, APF over current, over temperature, and more. All faults are recorded in the event log, which is convenient for failure analysis

 

Technical Data

Product Type

SD-ADF-***M/3L

SD-ADF-***M/4L

Rated voltage

220VAC±10%

400VAC±10%

690VAC±10%

Rated frequency

50(60)Hz±3%,With automatic frequency sweeping function

Plant type / number of phases

3 phases, 3 wires or 3 phases, 4 wires

Main network distribution

TN or TT

Harmonic compensation

up to 52th , individually selectable

Cosφ  pfc

from 0.7 inductive to 0.7 capacitive

Dynamic load balancing between phases

prevents neutral overloading

Rated current

30A -50A-100A-150A for each module

Parallel units

 

up to 5 in the same cabinet, 600 A total

possibility of operation of several units in parallel

Response time

< 200μs

Overload capability

2.5 In (x 10ms)

Switching frequency

20kHz or 24kHz

Inverter topology

3 levels IGBT switch for low losses

Current limit

rated current

Protections

protections against overload, shortcircuit, overheating, overvoltage and undervoltage

Grid resonancy detection

with blocking resonancy currents

Transformers current

 

no. 3 CTs rated from 100A/1A and 2500A/1A (not supplied)

no. 3 CTs rated from 100A/5A and 6000A/5A (not supplied)

Graphic interface

7”display touch screen unit for commissioning and monitoring. Includes Ethernet interface

Operation mode

Automatic or Manual

APF module capacity

Modular system

400V: 30A□ 50A□ 75A□ 100A□ 125A□ 150A□  

690V: 50A□ 75A□ 100A□ 125A□  

Multiple modules can be used in parallel

APF Cabinet capacity

400V:30~600A;   690V:50~500A;

Protection degree

IP32 (for floor mount cabinet)

IP20 (for wall mount version)

IP54 (optional for floor mount)

Colour

Optional

Cooling

forced ventilation

Ambient temperature

from -15°C to +45°C full performance, derating up to 55°C

Relative humidity

<95%, non condensing

Altitude

2000m, 4000m max with derating

Certificates

CE, ROHS

 

Technical parameter

Inquire about the company or Email:splend@splendpower.com

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暂未实现,敬请期待
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