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Low Voltage VFD
WD400 High-Performance General-Purpose AC Drive, 0.75-1000 kW
Wolong WD400 vector AC drive for induction and permanent-magnet motors: 0.75 - 1000 kW, 200 - 690 V, SVC / FVC / V/F, STO, built-in DC reactor, CE, UL and EAC. Quote within 24 hours.
- Genuine Wolong NanyangOriginal factory nameplate, test report and documents
- Certified for hazardous areasATEX, IECEx, CSA, EAC, CNEX and CCC certificates held by Wolong Nanyang
- Model check in 24 hoursEngineers match power, voltage, Ex marking and mounting
- Worldwide deliverySeaworthy export packing, CIF or with your forwarder
Product Description
The WD400 is Wolong's new-generation high-performance general-purpose vector AC drive. It controls induction motors, permanent-magnet synchronous motors and synchronous reluctance motors, and is matched to Wolong motors for the best system efficiency. Compared with the previous generation it improves speed range, torque accuracy and low-frequency performance, and adds Safe Torque Off (STO).
It complies with CE, UL, EAC and KC requirements (some models still in certification), so it can be used in export machinery and overseas projects.
Key Specifications
| Supply | Single-phase 200 - 240 V (0.75 - 4 kW); three-phase 200 - 240 V; three-phase 380 - 480 V (0.75 - 710 kW); three-phase 660 - 690 V |
|---|---|
| Power range | 0.75 - 1000 kW |
| Supply frequency | 50 / 60 Hz ±5 % |
| Overload | 150 % rated current for 60 s |
| Motor types | Induction (IM), permanent-magnet synchronous (PMSM), synchronous reluctance |
| Control | Sensorless vector (SVC), closed-loop vector (FVC), V/F |
| Analogue I/O | 2 inputs and 2 outputs, 0 - 10 V / 0 - 20 mA / 4 - 20 mA (1 output on frame 5 and smaller) |
| Digital I/O | 7 inputs up to 1 kHz (5 on frame 5 and smaller), 1 open-collector output, 1 pulse output up to 100 kHz, 2 relay outputs |
| Communication | Modbus RTU standard; PROFIBUS-DP, PROFINET, EtherNet, CANopen optional |
| Expansion | 2 slots: I/O, encoder (ABZ, resolver), fieldbus and IoT modules |
| Braking | Built-in brake unit 0.75 - 22 kW, external from 30 kW |
| Mounting | DIN rail (0.75 - 5.5 kW), wall (0.75 - 630 kW), flange (75 - 160 kW), floor-standing (220 - 710 kW) |
| Grid side | Built-in DC reactor, THDi 40 % or lower, power factor 92 % or higher at rated load |
| Cooling | Forced air |
| Ambient | -10 to +50 °C, up to 3000 m, humidity below 95 % non-condensing |
Design Features
- Speed range 1:500 (induction motor, FVC) and 1:200 (PM motor, SVC)
- 200 % starting torque, torque step response within 2 ms
- Speed stability 0.02 %, torque accuracy ±2 % (FVC) or ±3 % above 5 Hz (SVC)
- Up to 5 × field weakening; MTPA control for PM motors
- Energy-saving control, droop and master-slave control, voltage-dip ride-through, overvoltage and overcurrent suppression, oscillation suppression, DC braking, speed tracking
- Slim design with integrated DC reactor saves cabinet space
- LED keypad standard, LCD keypad with multilingual display and parameter copy optional
Applications
Conveyors, crushers, pumps, fans and compressors, injection-moulding machines, cranes and hoists, rolling mills, marine propulsion, metallurgy, cement, chemical and petrochemical plants, water treatment, pulp and paper, food and beverage, HVAC and mining.
Common Questions
What power range does the WD400 cover?
The WD400 covers 0.75 - 1000 kW.
How is the WD400 cooled?
Cooling method: Forced air.
Documents Supplied with the Motor
For each order we can provide the technical data sheet, outline drawing, routine test report and, for explosion-proof motors, a copy of the Ex certificate that matches the nameplate marking. Tell us in the inquiry which documents your project or your inspector requires, so they are prepared before shipment.
Related Products
How to Order
For a fast, accurate quotation please send: rated power (kW), voltage and frequency, number of poles or speed, Ex marking or hazardous zone, mounting type, quantity and destination port. For a replacement, a photo of the old motor nameplate is the quickest way to match it.
Frequently Asked Questions
Do your explosion-proof motors have ATEX and IECEx certificates?
Yes. Wolong Nanyang explosion-proof motors, both low-voltage and high-voltage, are available with ATEX and IECEx certificates for Europe and international projects, and GOST for the Russian market. Tell us which certificate you need when you ask for a quote.
Can this motor replace my existing motor?
Yes. For new projects we quote and select the model to your requirements. For a replacement, please send a nameplate photo or outline drawing of the old motor, and we will match the shaft height, mounting and installation dimensions.
Can you supply replacements for Schorch, Brook Crompton or Morley motors?
Yes. Schorch, Brook Crompton and Morley belong to the Wolong Electric Group, and we can supply Wolong motors built to replace them, matched to your mounting dimensions.
Can you ship to my country, and what is the lead time?
Yes. We ship worldwide on CIF terms, or you can use your own forwarder. The usual production time is about 3 months, depending on the model and quantity.
What information do you need for a quotation?
Rated power (kW), voltage and frequency, number of poles or speed, Ex marking or hazardous zone, mounting type (e.g. B3, B35, V1), quantity and destination port. A nameplate photo of the old motor helps if it is a replacement.
Get a Quote for WD400 High-Performance General-Purpose AC Drive, 0.75-1000 kW
Send us your requirements. An engineer will reply with a model check and price within 24 hours.
