For a Yueqing VFD manufacturer shortlist, compare CHINT, PEOPLE, DELIXI, CHZIRI, SAIKONG, Chuanken, NENA, Loka, Lenz and VIOX. The first nine publish variable-frequency drives or drive families on an official website, with a Yueqing connection stated on the reviewed pages. VIOX is included as a local source for the motor-control and protection components around a VFD cabinet; it is not presented here as a standalone VFD manufacturer. The useful next step is not to ask for “the best VFD,” but to send the same motor and load schedule to each supplier and compare model-specific current, overload, control mode, installation data and, where relevant, the component boundary.
A VFD is not a soft starter. A soft starter controls the motor during starting and stopping at the supply frequency; a VFD changes output frequency and voltage to control running speed. If you only need a controlled start, compare our Yueqing soft starter guide. If you need a contactor-plus-overload starter rather than a drive, see the motor starter guide.
How this list was selected: Official product, catalogue and contact pages were reviewed on 23 October 2026. The order is a research shortlist, not a quality, price, certification, export or “best” ranking. Confirm the legal entity, factory, exact model and current supporting documents before ordering. Listing a company does not mean BottomRace has audited its production or verified every published rating. Some groups manufacture at more than one site; the Yueqing connection does not by itself prove that every model is made there.
Ten Yueqing VFD manufacturers to compare
Use the published focus to decide which suppliers deserve the first technical enquiry. Keep the product family and the legal seller separate from the final production-site check.
| Manufacturer | Published location | Published VFD focus | Useful first question |
|---|---|---|---|
| CHINT Electrics | CHINT Industrial Zone, North Baixiang, Yueqing | NVF2G general-purpose open-loop vector and V/F drives | Does the quotation use the S2 220 V or S4 380 V NVF2G model? |
| People Electrical Appliance Group Co., Ltd. | No. 555 Liule Road, Liushi, Yueqing | RD580 high-performance vector and RDI67 fan/pump VFDs | Which RD580 or RDI67 family, rating and overload type are quoted? |
| DELIXI Electric | DELIXI High-Tech Industrial Park, Liushi, Yueqing; confirm the quoted product entity | CDI-E100 compact VFDs with RS-485 Modbus-RTU | Which CDI-E100 voltage, frame and brake-unit option are in the quote? |
| ZIRI Electrical Technology Co., Ltd. (CHZIRI) | Building 2, Phase II, CHINT IoT Sense Industrial Park, Yueqing | ZVF510 compact drives and ZVF600-G IP54 general drives | Do you need the compact ZVF510 or the protected ZVF600-G installation? |
| Zhejiang Saikong Electrical Technology Co., Ltd. | No. 22 Liujiang Avenue, Liushi, Yueqing | SN200G, SN200MN, SN300 and SN360 solar-pump VFD families | Is the application a grid motor drive or a solar-pump system? |
| Zhejiang Chuanken Electric Co., Ltd. | Wengyang Town, Yueqing | SCK200 universal, SCK300 general and SCK500 high-power VFDs | Which SCK family matches the required current and control duty? |
| Zhejiang Xinhang Electric Co., Ltd. (NENA) | No. 23 Huaping Road, Shuguang Industrial Zone, Wengyang, Yueqing | 820, 860S, 820D, 860E, 510 and photovoltaic 133 VFD families | Which NENA series and motor-control mode are being offered? |
| Zhejiang Loka Electric Co., Ltd. | Wenzhou Daqiao Industrial Park, Beibaixiang, Yueqing | CPF8000-C universal vector and CPF9000-H high-performance drives | Is the duty a general machine load or a high-performance vector application? |
| Zhejiang Lenz Electronic Technology Co., Ltd. | Xitantou Industrial Zone, Liushi, Yueqing | LC680 general and application-specific VFD ranges; LC600A medium-voltage vector drives | Which LC680 or LC600A series addresses the actual machine duty? |
| VIOX Electric | 1st Building, East Innovation Zone, Wengyang Town, Yueqing | Motor-control components for VFD cabinets: AC contactors, overload relays and related protection | Which contactor, overload relay and protection components are needed around the drive? |
Manufacturer profiles and sourcing questions
1. CHINT Electrics
Short name: CHINT
Published location: CHINT Industrial Zone, North Baixiang, Yueqing
CHINT publishes the NVF2G as a general-purpose variable frequency drive with open-loop vector and V/F control. The official page lists three-phase 220 V S2 and three-phase 380 V S4 families, 0–500 Hz output, 150% current for one minute, RS-485 Modbus-RTU, IP20, and references IEC/EN 61800-2 and IEC/EN 61800-5-1. These are family-level statements, so the selected frame, current rating and overload duty still need to be checked against the motor and load. CHINT's corporate base is in Yueqing, but the company operates multiple manufacturing sites. Ask the quotation and product documents to identify the legal seller and the site that will make the offered NVF2G.
Before requesting a quote: Provide the motor nameplate, supply voltage, driven load, starting torque, acceleration time and ambient conditions. Request the exact NVF2G model and frame, rated input/output current, overload rating, brake unit or resistor requirement, EMC arrangement, control I/O and communication options. Confirm the legal seller, production site and document set for the offered model.
Official sources: NVF2G general-purpose VFD · company contact details.
2. People Electrical Appliance Group Co., Ltd.
Short name: PEOPLE
Published location: No. 555 Liule Road, Liushi, Yueqing
PEOPLE publishes two useful but different VFD routes. The RD580 series is described as a high-performance vector AC drive with open-loop vector, V/F and torque-control modes. Its published table covers single-phase 220 V, three-phase 220 V and three-phase 380 V inputs, with G-type and P-type overload ratings shown separately. RDI67 is presented as a fan and water-pump general-control drive covering 220 V and 380 V variants. Do not use the RD580 input-current table for an RDI67 enquiry, and do not choose a model from motor kW alone. The contact page gives the Liushi, Yueqing address.
Before requesting a quote: State the motor full-load current, voltage, load torque curve and required speed range. Ask for the exact RD580 G/P or RDI67 model, input and output current, overload duration, brake and DC-reactor configuration, control terminals, communication options and enclosure. Confirm the legal manufacturer and production site for the selected family.
Official sources: RD580 high-performance vector VFD · RDI67 fan and pump VFD · company contact details.
3. DELIXI Electric
Short name: DELIXI
Published location: DELIXI High-Tech Industrial Park, Liushi, Yueqing; confirm the quoted product entity
DELIXI publishes the CDI-E100 series as a compact, low-power VFD range with an internal RS-485 module supporting Modbus-RTU. The official table separates single-phase 220 V, three-phase 220 V and three-phase 380 V models, and lists rated input current, rated output current and matching motor power for each frame. It also states that 15 kW and below models have a built-in brake unit, while 18.5–22 kW units can have an optional one. The page targets low-power non-vector applications and is not a substitute for a high-starting-torque drive. DELIXI's group contact page gives the Liushi industrial park; verify the exact selling entity in the quotation.
Before requesting a quote: Send the motor current, voltage, load type and required starting torque. Ask for the exact CDI-E100 model, frame, rated input and output current, overload capability, brake resistor requirement, DC reactor option, control terminals and enclosure rating. Confirm the legal manufacturer, seller and factory for the offered model.
Official sources: CDI-E100 VFD · company contact details.
4. ZIRI Electrical Technology Co., Ltd. (CHZIRI)
Short name: CHZIRI
Published location: Building 2, Phase II, CHINT IoT Sense Industrial Park, Yueqing
CHZIRI publishes multiple VFD families rather than a single generic box. ZVF510 is described as a compact economic inverter with V/F, simple vector and advanced vector control modes, side-by-side installation and standard Modbus communication. ZVF600-G is a separate IP54 general inverter designed for dusty or splash-prone environments and pump control. The protection level and installation method belong to the selected family, not to every CHZIRI drive. The contact page gives a Yueqing industrial-park address; confirm the workshop and seller for the offered model.
Before requesting a quote: Specify indoor panel mounting or a protected outdoor installation, motor current, voltage, load type and required control mode. Ask for the selected ZVF510 or ZVF600-G model, power and current ratings, starting torque, overload schedule, enclosure rating, brake arrangement, I/O and communication options. Request the manual for the exact model.
Official sources: ZVF510 compact VFD · ZVF600-G IP54 VFD · company contact details.
5. Zhejiang Saikong Electrical Technology Co., Ltd.
Short name: SAIKONG / SAFESAV
Published location: No. 22 Liujiang Avenue, Liushi, Yueqing
Saikong publishes several VFD families under the SAFESAV brand. SN300 is described for general-purpose asynchronous motors with single-phase 220 V, three-phase 220 V, three-phase 380 V and three-phase 460 V options, open-loop vector, V/F and closed-loop vector control. SN360 is a separate solar-pump inverter family intended for locations with weak or unavailable grid power. The product category also includes SN200G and SN200MN general-purpose families. These are not interchangeable by power rating alone. The contact page gives the Liushi, Yueqing address.
Before requesting a quote: State whether the input is grid AC or a photovoltaic array, and provide motor current, voltage, pump head/flow or load torque, required speed range and daily operating cycle. Ask for the exact SN model, DC/AC input limits, MPPT or motor-control functions, enclosure, cooling, brake option and communication interfaces.
Official sources: SN300 general-purpose VFD · Frequency-inverter range · company contact details.
6. Zhejiang Chuanken Electric Co., Ltd.
Short name: CHUANKEN
Published location: Wengyang Town, Yueqing
Chuanken publishes SCK200, SCK300, SCK500 and other inverter families. The SCK200 page lists single-phase models from 0.4–2.2 kW and three-phase models from 0.75–400 kW, with open-loop vector or V/F control and 0–400 Hz output. SCK500 is a different high-power range, published as 1.5–710 kW with a stated 150% current for 60 seconds, 180% for 10 seconds and 200% for 0.5 seconds. Those ratings belong to SCK500 and must not be copied onto another family. The contact page gives Wengyang, Yueqing.
Before requesting a quote: Provide the motor nameplate current, supply voltage, driven load, starting torque and daily duty. Ask for the exact SCK200, SCK300 or SCK500 model, rated input/output current, overload schedule, DC reactor and brake arrangement, analogue/digital I/O, pulse input and communication cards. Request the model manual rather than a range-level catalogue only.
Official sources: SCK500 high-power VFD · SCK200 universal VFD · company contact details.
7. Zhejiang Xinhang Electric Co., Ltd. (NENA)
Short name: NENA / XINHANG
Published location: No. 23 Huaping Road, Shuguang Industrial Zone, Wengyang, Yueqing
NENA's official frequency-converter category separates the 820, 860S, 820D, 860E, 510 and photovoltaic 133 series. The 820 family is further presented as vector-control, micro-size, torque-boost, energy-efficient, heavy-overload and built-in-EMC-filter options. These labels help frame an enquiry but do not replace the model table. The 860E family is separately associated with permanent-magnet motor-control functions, while the solar 133 family addresses photovoltaic input. Confirm the exact series, input type and factory document for the selected drive. The contact page gives a Yueqing Wengyang address.
Before requesting a quote: Send the motor or PV input details, motor current, load curve, speed range and required overload. Ask for the exact 820, 860E, 510 or 133 model, rated input/output current, control mode, starting torque, enclosure, cooling, brake/chopper arrangement, EMC filter and communication interface. Confirm the production site and legal seller named on the quotation.
Official sources: 820 series VFD · 860E series VFD · Frequency-converter range · company contact details.
8. Zhejiang Loka Electric Co., Ltd.
Short name: LOKA
Published location: Wenzhou Daqiao Industrial Park, Beibaixiang, Yueqing
Zhejiang Loka Electric publishes the CPF8000-C universal vector VFD and CPF9000-H high-performance vector VFD as separate product families. CPF8000-C is listed from 0.75–500 kW at a nominal 380 V ±15% 50 Hz supply, with custom voltage options and a range of frame sizes. CPF9000-H uses the same broad power span but is positioned for PG vector and higher-performance motor control. The exact frame, current and option list still require the model table. The company's contact page gives the Daqiao Industrial Park address in Beibaixiang, Yueqing.
Before requesting a quote: Provide the motor nameplate, maximum load torque, required speed accuracy, starting condition and ambient temperature. Ask for the exact CPF8000-C or CPF9000-H frame, rated input and output current, overload schedule, encoder requirement, brake resistor, reactor, filter, I/O and communication cards. Confirm the production site and model-specific manual.
Official sources: CPF8000-C universal vector VFD · CPF9000-H high-performance VFD · company contact details.
9. Zhejiang Lenz Electronic Technology Co., Ltd.
Short name: LENZ / CHLCKG
Published location: Xitantou Industrial Zone, Liushi, Yueqing
Zhejiang Lenz's official site publishes LC680 general VFDs and application-specific LC680 variants for water supply, tension control, ball mills, food processing and veneer cutting. It also lists LC600A series alternatives for medium-voltage vector, air compressor, oil-pumping, lifting, textile and other duties. The range structure is useful for identifying an application-specific enquiry, but the page does not make every model interchangeable. Request the exact LC680 or LC600A model, manual and supply configuration. The contact page gives the Xitantou Industrial Zone address in Liushi, Yueqing.
Before requesting a quote: Describe the machine, load torque, required speed range, starting method and environmental conditions. Ask for the exact LC680 or LC600A model, input voltage and current, output current, overload schedule, vector mode, brake and reactor requirements, I/O and communication options. Confirm whether the offered model is a standard drive or an application-specific configuration.
Official sources: LC680 VFD series · LC600A VFD series · company contact details.
10. VIOX Electric
Short name: VIOX
Published location: 1st Building, East Innovation Zone, Wengyang Town, Yueqing
VIOX is a useful local source for the motor-control and protection components around a VFD cabinet, not a company whose reviewed catalogue currently presents a standalone VFD family. Its official Motor Control & Protection category covers AC contactors, modular contactors and thermal overload relays. The AC-contactor range includes CJX2 frames from 0911 through 9511, while the overload range includes JR28, JR36 and LR2-D models. Use VIOX for the bypass, isolation, switching and overload scope only after confirming that each component is coordinated with the selected drive and panel design. VIOX states that it has operated from Yueqing since 2010; confirm the legal seller and production site in the quotation.
Before requesting a quote: Provide the VFD model, motor full-load current, bypass arrangement, control voltage, fault-output logic and panel ambient conditions. Ask which contactor frame, coil voltage, auxiliary contacts and thermal-overload range are being offered, how they are coordinated with the drive and upstream protection, and whether the components are supplied loose or assembled in a tested panel. Request the model datasheet and confirm the legal seller and production site.
Official sources: Motor control and protection range · AC contactors · Thermal overload relays · company contact details.
VFD quotation and selection checklist
Send every supplier the same motor, load and installation schedule. Ask for a written model selection with any exceptions or required external components. “kW matches” is not a complete selection.
| Include in your enquiry | Ask each supplier to confirm |
|---|---|
| Motor nameplate | Rated power, voltage, frequency, full-load current, poles, insulation, duty, service factor and whether the motor is induction or permanent-magnet synchronous. |
| Load behaviour | Constant-torque or variable-torque duty, breakaway torque, load inertia, friction, starting condition, overhauling load and required acceleration/deceleration time. |
| Operating speed | Minimum and maximum speed, continuous operating points, speed accuracy, speed regulation, reversal, jogging and the safe behaviour at zero speed or during a controlled stop. |
| Overload schedule | Required overload percentage and duration, starts per hour, thermal recovery between starts, ambient temperature and the exact G/P or heavy/light-duty convention used by the supplier. |
| Control mode | V/F, open-loop vector, closed-loop vector, torque control or application-specific mode; encoder requirement, motor auto-tuning, low-speed torque and speed-tracking behaviour. |
| Electrical supply | Input phases and voltage, tolerance, frequency, prospective short-circuit current, required upstream fuse or breaker, isolation method and whether a line reactor or DC reactor is required. |
| Output current | Rated output current, maximum short-time current, output voltage, maximum frequency, carrier frequency, derating for ambient or altitude and permitted motor-cable length. |
| Braking and regeneration | Brake chopper or brake unit included or external, resistor rating and duty, DC-bus arrangement, regenerative capability and overvoltage behaviour during a fast stop. |
| EMC and installation | Built-in or external EMC filter, shielded-cable requirements, earthing and bonding, enclosure or IP rating, cooling air, clearances, cabinet heat load and pollution degree. |
| I/O and controls | Analogue and digital inputs, relay and transistor outputs, pulse I/O, reference supplies, local keypad, parameter backup, fault log and behaviour after power restoration. |
| Communications | Modbus or other fieldbus, physical interface, supported function codes, register map, baud-rate settings, option-card part number and firmware compatibility. |
| Protection and coordination | Overcurrent, overload, phase loss, overvoltage, undervoltage, overtemperature, short circuit, earth fault, stall prevention and the specified upstream protective device. |
| Application fitness | Pump/fan, conveyor, HVAC, machine tool, compressor, lifting or solar-pump duty; relevant application macros, PID loops, sleep/wake, multi-pump control and motor-type restrictions. |
| Documents and factory scope | Current manual and datasheet, model-level declaration or test evidence, applicable IEC 61800 series documents, production site, legal seller, firmware version, warranty and spare parts. |
Select against current and duty, not the kW headline. A 7.5 kW drive from one family can have a different rated output current, overload schedule and permissible ambient from a 7.5 kW model in another. The motor nameplate current at the actual supply voltage is the first cross-check. Then compare the supplier’s heavy-duty and light-duty definitions, the required acceleration torque and the actual starts per hour. If the load needs high breakaway torque or accurate low-speed control, ask for the vector-control evidence and encoder requirement.
Make the installation boundary explicit. A drive unit, a wired VFD cabinet and a complete motor-control panel are different purchases. Ask who supplies the enclosure, cooling fans, input protection, contactor, line reactor, EMC filter, brake resistor, control transformer, terminals, labels and final routine tests. If the supplier offers a cabinet, request the assembly drawings, calculated heat load, short-circuit coordination and internal-separation details. Do not assume a drive’s IP20 open-frame rating applies to the finished cabinet.
Match the standard and evidence to the model. IEC 61800-2 covers general requirements for adjustable-speed electrical power drive systems; IEC 61800-3 addresses EMC and IEC 61800-5-1 addresses safety. A page that names these standards is not by itself proof that every frame, option card or cabinet configuration is covered. Ask for the declaration, test summary or certificate that identifies the exact model and configuration you intend to buy. For a solar-pump system, also require the PV input, motor and protection documentation for that application.
For the surrounding motor-control decision, the MPCB guide and contactor guide can help you define the upstream protection and switching scope. Final protection coordination remains the responsibility of the drive manufacturer and the panel designer.
What to check during a VFD factory visit
Agree the exact model family, power frame, firmware and delivery boundary before the visit. Ask the supplier to identify the work it performs in-house: PCB assembly, power-module assembly, heatsink preparation, magnetic components, final assembly, parameter loading, functional testing and cabinet integration.
- Trace the power path: compare the rectifier, DC-bus capacitors, IGBT or power module, current sensors, heatsink, fans and terminals with the approved bill of materials. Ask how component substitutions and incoming inspection are controlled.
- Review thermal construction: check heatsink flatness and mounting, thermal-interface material, terminal torque, busbar insulation, air ducts, fan direction and the clearance needed for the specified enclosure.
- Inspect the control assembly: review PCB revision, conformal coating where claimed, connector locking, keypad interface, option-card fit and separation between power and signal wiring.
- Link firmware to parameters: record the firmware version, model code, motor nameplate data, control mode, overload setting, carrier frequency, acceleration/deceleration and digital I/O assignment for the tested unit.
- Watch functional tests: ask how the factory verifies output waveform, current sensing, keypad control, analogue and digital I/O, relay outputs, communications, fault trips and restart behaviour.
- Understand the load test: identify the motor or dynamometer, test voltage, load points, duration, ambient temperature and acceptance criteria. A no-load spin test does not prove the claimed low-speed torque or overload schedule.
- Check the cabinet boundary: for a VFD panel, verify incoming isolation, fuse or breaker, contactor, reactor, filter, brake resistor, cooling, cable entries, earth bar, labels and the routine-test record against the approved drawings.
- Follow the records: connect serial numbers, component batches, firmware, parameter files, calibration and test results to the finished drive, manual, packing list and warranty.
A factory visit helps you understand the assembly process and ask better technical questions. Use the model-specific manual, test records and certification evidence to evaluate the declared performance and destination-market requirements separately.
BottomRace coordinates electrical sourcing and purchasing in Yueqing. Pro: $0 separate service fee; procurement service costs are included in the product quotation. Basic: 5% of product value, with a minimum service fee of $100, for your existing Yueqing suppliers. Compare our Pro and Basic services. For on-site meetings, see our factory visit services. The quotation confirms the scope, inspections, payment terms and any additional costs.
Questions VFD buyers ask
Can I choose a VFD by motor kW alone?
No. kW is only an initial catalogue reference. Check motor full-load current at the actual voltage, the load torque curve, acceleration time, starts per hour, ambient temperature and the drive’s heavy-duty or light-duty rating. Two drives with the same kW label can have different rated output current and overload capability.
Is a VFD the same as a soft starter?
No. A soft starter controls voltage during starting and then normally runs the motor at supply frequency. A VFD rectifies the incoming supply and generates a variable-frequency output to control running speed. A VFD can usually provide a controlled start as part of its function, but its selection must be based on continuous speed and torque duty, not only starting current.
Does a built-in brake unit mean I do not need a brake resistor?
No. The brake unit provides a path for regenerated energy, but the resistor absorbs that energy. The resistor’s resistance, power rating and duty cycle must match the drive and the stopping cycle. Some small models include a brake unit as standard while others require an external option. Confirm the exact configuration and whether the resistor is included.
What does G-type or P-type overload mean?
Supplier definitions vary. In many catalogues, G indicates a heavier constant-torque duty and P indicates a lighter variable-torque duty such as a fan or pump. Do not apply the letters across brands without reading the model table. Confirm the overload percentage, duration, ambient temperature and permissible starts per hour for the exact model. The same frame may be offered under both conventions with different current ratings.
Can I use a 50 Hz motor with a 60 Hz supply?
Only after checking the motor’s voltage-frequency relationship, insulation, cooling, bearings and permitted speed. A VFD can change output frequency, but it cannot make an unsuitable motor suitable for every speed. Above base speed, the available torque normally falls unless the motor and drive are designed for the higher speed. Give the supplier the motor nameplate and the actual operating-speed range.
Do I need an EMC filter for every installation?
The requirement depends on the drive, cable length, earthing arrangement, nearby equipment and the destination market’s EMC rules. Some drives have a built-in filter; others need an external optional filter. Specify the installation environment and ask for the filter part number, leakage-current implications and the manufacturer’s installation instructions.
Are the ten companies ranked by quality or price?
The numbered order is a research shortlist based on official product and location information. Compare the same motor duty, supply scope, technical evidence and commercial terms across suppliers, then verify the factory and sample. The article does not establish a quality, price, certification, export or “best” ranking.
Planning a Yueqing VFD sourcing trip?
Email your motor nameplate, required speed and torque, supply voltage, load profile, quantity and visit dates. We can discuss supplier screening and agreed local support.