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  • Wanlida High Voltage Frequency Converter - China

    price: contact company for price

    It is very suitable for motor speed

    regulation and energy saving solutions,

    especially for high voltage motor of fans,


    Product Structure

    1. Bypass Cabinet (Optional)

    The by-pass cabinet or switching cabinet may

    employ isolating breaker, vacuum contactor or

    the combination, depending on the user’s

    working conditions. The function of by-pass

    cabinet is to put the motor into operation in

    industry frequency grid after the WLD-HVF

    exits, so as to ensure the continuity of

    user’s production. The switching cabinet is

    designed to divert the WLD-HVF output to

    different motors.

    2. Transformer Cabinet

    Used for installation of Phase-shift

    transformer, it is dry type transformer with

    functions of temperature display and over-

    heat protection, also with insulation grade

    of H. The secondary multi-winding output

    provides phase-shift power supply to the

    power unit. This can greatly improve the

    current waveform on grid side and reduce the

    harmonic interference of the equipment to

    power grid lower of the National Criterion.

    3. Power Unit Cabinet

    Used for installation of power units, which

    adopted imported high quality components

    inside, all power units are installed on the

    sliding seat, it is very easy to replace.

    4. Control Cabinet

    Used for installation of low voltage control

    components, there are controller, PLC, UPS,

    Electric siren, DC 24V power supply, Control

    Power Source Switch, Wiring Terminals, Touch

    Screen, Operation Button etc.

    The equipment adopted fiber optical

    communications, which has a very good EMI

    restraining performance; The transformer,

    control cabinet and all power units, are

    built in temperature protection, so it will

    be maintenance free.

    Technical Features

    Voltage source High-high frequency inverter,

    it can realize No-step speed regulation,

    which makes the typical motors into

    intelligent motors.

    Low harmonics input and high power factor,

    the typical value for power factor is 0.95

    through whole speed regulation, even more

    higher, no need for power factor


    WLD-HVF output few harmonics, the motor does

    not generate extra heat and noise.

    Modularized design of power units,

    interchangeable and easy to produce and

    repair, the equipment can find any fault

    exactly based on advanced diagnostic

    procedures in MPU.

    The inverter still can operate even the

    faults for part of power units exists, if

    there are faults happen for inverter, the

    system can switch to power frequency through

    bypass function.

    Applicable to all kinds of power grid at home

    and abroad and suitable for typical high

    voltage motor.

    Colorful touch screen, easy to operate and


    Able to realize remote control, DCS operation

    and communications with Host, and support all

    kinds of communications interfaces such as

    CAN, Profibus, Modbus, RS232, RS485 etc.

    Applied latest components, master control

    chip adopted TI’s DSP F28335 and ALTERA’s

    FPGA of EP3C to realize powerful processing

    capacity; Sampling adopted AD’s AD7606 with

    16 bit to ensure control accuracy of the


    The switchgear can satisfy safety

    requirements, and the pressure-relief channel

    of high voltage switch can ensure safe use of


    Technical Parameters

    Series No




    HVF Capacity(KVA)



    Power of adaptive motor(KW)



    Input Frequency(Hz)



    Harmonics contents injected to power grid



    Rated input voltage(KV)

    3KV/6KV/10KV ±10%


    Input power factor

    >0.95%(>20% of rated load)



    >96%(under a rated load)


    Output frequency(Hz)



    Precision of output frequency



    Rated output current(A)



    Overload capability

    120%(1min), 150%(3s), 200%(Immediate



    Control mode

    V/F control or Vector control


    Analog input



    Analog output

    0~10V/4~20mA Optional (2 channels)


    Boolean input/output

    Communications/Default point (expandable)


    Acc & Dec time (S)






    Protection grade



    Cooling mode

    Forced air cooling


    Operation environment temperature






    Communication with host

    CAN, Profibus, Modbus, RS232, RS485 etc


    1. Perfect quality and service system

    The company complies with ISO9001:2008

    strictly to carry out production, process


    2. Pre-sale Service

    Investigate and Survey onsite; Provide

    Feasibility study report; Assist in equipment

    specification selection; Analyse estimated

    energy saving effect etc

    3. In-sale Service

    Provide onsite installation and debugging

    training, Operator training, design

    paper&corresponding program, energy saving

    estimation and measuring etc

    4. After-sale Service

    The 24-hour timely and all-round service is

    available for all WLD-HVF users; Providing

    lifetime maintenance, onsite fault diagnosis,

    remote diagnosis etc.

    Company Contact:

    • Phone: 867563395623

    • Address: Wanlida Relay Protection Industrial Park, No. 1 Te, Zhuhai, China

    • Email: Email

    Published date: August 22, 2013 -

    • Business Description: Incorporated in 1991, Zhuhai Wanlida Electric Co., Ltd. (www.zhwld.com)

      ('the Company'), is located in Relay Protection Industrial Park, No.1

      Technology Road, Science and Technology Innovation Coast, High tech

      Zone, Zhuhai City, coving a land area of approximately 60 thousand

      square meters (including Park 1 and Park2). The Company was listed for

      equity financing on November 13, 2007 (equity securities abbreviated as:

      Wanlida stock certificates, code: 002180), with a registered capital of

      124,980,000 Yuan. The Company keeps on her aggressive 'production,

      study, research and application' co operation with the famous academies

      such as Tsinghua University, Chinese Academy of Sciences and Central

      China University of Science and Technology and carries out relevant

      technology innovation. It is a national high tech enterprise that deals

      with specialized development, production and sales of substation

      integrated automation systems and Medium voltage variable frequency

      drives, Medium voltage magnetically controlled soft starters, Static

      synchronous compensator(STATCOM/SVG), Static VAR compensator(SVC),

      Active power filter(APF/AHF), Thyristor switched capacitor bank

      (TSC/TSF), High voltage direct current light transmission systems etc

      power electronic equipments. In addition, the Company is known as a

      famous manufacturer and backbone enterprise of transformer substation

      integrated automation and power electronic equipments fields in China,

      and it also acts as fresh blood in the field of energy conservation and

      emission reduction.

      Wanlida passed the ISO9001 quality system certification, ISO14001 Environment Management System Certification and OHSMS18001 Occupation Health &Safety Management System Certification; All products passed the test of sated authoritative inspection bureau. And it had been rated as 'National High and New Technology Enterprise', 'Enterprise Recommended by State Economic and Trade Commission for Reconstruction of Urban and Rural Electric Grids', 'Key Software Enterprise Covered by National Program', 'Excellent enterprise of China', 'First choice Manufacturer for Electric Framework Protocol Sponsored by CNPC', 'Excellent Enterprise of Guangdong Province', 'Optimum Good faith Enterprise of Guangdong Province', 'Contract honoring Enterprise of Guangdong Province', 'Top 10 Private Enterprises of Zhuhai City', and 'Enterprise with Grade AAA Bank Credit '.

      Wanlida has a very strong R&D teamwork which has a population of over 100 with doctor's degree, postgraduate degree and bachelor's degree etc, and all of the products are designed strictly according to IEC standards; Wanlida has modern standard workshops, it brought advanced SMT production lines and wave soldering machines into company from abroad, and built the first class high voltage and big capacity power electronic equipments assembling and test platform, which is able to realize full load test and ensure that all of products have exquisite technics and reliable quality; At present, Wanlida covers all of domestic areas except Hongkong, Macau and Taiwan, and it also sells the products to Southeast Asia, Middle East, South America, Africa etc over 20 countries.

      The Company aims to grow into the most dedicated electric automation enterprise in the world, and commits itself to building the aircraft carrier of power electronic energy efficiency products.

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