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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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