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High Voltage Explosion-Proof Motors
YBS High-Voltage Flameproof Water-Cooled Motor, 160-6300 kW
Wolong Nanyang YBS high-voltage flameproof motor with air-to-water cooler (IC81W): frames 500 - 710, 160 - 6300 kW, 3 - 11 kV, Ex db IIB T4 Gb. 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 YBS is Wolong Nanyang's high-voltage flameproof induction motor with an air-to-water cooler. Moving the heat out through water instead of air lets a flameproof motor carry far more power in the same frame: compared with an air-to-air cooled flameproof motor, the YBS is about two frame sizes smaller for the same rating, so it is lighter, easier to place and less expensive to install.
It was developed for plants that need large flameproof drives where cooling water is available: compressors, pumps and fans in refineries, chemical plants, gas processing and coal handling. Efficiency, power factor and temperature rise are optimised across the range, and the whole series meets an 80 K temperature rise.
Key Specifications
| Frame size | 500 - 710 |
|---|---|
| Rated power | 160 - 6300 kW |
| Rated voltage | 3 - 11 kV |
| Frequency | 50 Hz, 60 Hz |
| Poles | 2 - 8 |
| Explosion protection | Ex db IIB T4 Gb; Ex d IIC T4 and Ex d I versions available |
| Insulation | 155 (F), temperature rise 80 K (B) |
| Cooling | IC81W (air-to-water) |
| Mounting | IM B3 |
| Protection | IP54, IP55, IP56 |
| Efficiency | Grade 2 of GB 30254 |
| Vibration | 2.0 mm/s (1.5 mm/s on request) |
| Noise | Lp 85 dB(A) or lower |
| Ambient | -15 to +40 °C, relative humidity up to 90 % at 25 °C, up to 1000 m |
| Environment | Indoor as standard; outdoor (W), outdoor anti-corrosion (WF1 / WF2), indoor anti-corrosion (F1 / F2), humid tropical (TH), dry tropical (TA) and outdoor tropical (THW / TAW) versions on request |
Design Features
- Box-type welded steel frame with two water coolers: light and rigid, and the frame and end shields are strong enough to withstand the explosion pressure
- Class F insulation with mica-tape coils and solvent-free vacuum-pressure impregnation
- Die-cast aluminium or copper-bar cage rotor, precision balanced
- Sleeve bearings (usually forced lubrication, insulated against shaft currents) or rolling bearings, depending on power and speed
- Pt100 sensors in the stator winding, anti-condensation heater; star-point terminals for differential protection on frames 630 and above
- Large terminal box; larger grease space extends relubrication intervals by 1.5 times
- Strong overload capacity, low vibration and noise
Not the Mining Conveyor Motor
The same letters are used for the low-voltage YBS conveyor motors in coal mines (Ex d I Mb, water jacket). This page is the high-voltage industrial YBS with an air-to-water cooler on top. If you are looking for a conveyor motor, see the YBS mining conveyor motor.
Applications
Compressors, pumps, fans and other large drives in petrochemical, chemical, oil and gas, and coal-handling plants with cooling water, in Zone 1 and Zone 2 gas atmospheres of group IIA / IIB.
Model Code
Example YBS630-2: YBS = flameproof motor with water cooling, 630 = shaft height (mm), 2 = poles.
Explosion Protection Explained
A flameproof enclosure ("d") withstands an internal explosion and cools the escaping gas in the flame paths, so the surrounding atmosphere is not ignited. Gas group IIA, IIB or IIC (hydrogen and acetylene) and the temperature class (T1 - T6) must match the site; EPL Gb allows Zone 1 and Zone 2.
Common Questions
What power range does the YBS cover?
The YBS covers 160 - 6300 kW.
Which voltages are available for the YBS?
Rated voltage: 3 - 11 kV. Other voltages can be checked on request.
Which explosion protection does the YBS have?
The marking is Ex db IIB T4 Gb; Ex d IIC T4 and Ex d I versions available. Tell us the zone, gas group and temperature class of your site and we confirm the right version.
How is the YBS cooled?
Cooling method: IC81W (air-to-water).
What is the degree of protection?
Standard protection is IP54, IP55, IP56.
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
- YBXKK High-Voltage High-Efficiency Explosion-Proof Motor
- YB3 High Voltage Three-phase Asynchronous Motor
- YWKK / YWKS Non-Sparking HV Motor, Ex nA, 6/10 kV
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 YBS High-Voltage Flameproof Water-Cooled Motor, 160-6300 kW
Send us your requirements. An engineer will reply with a model check and price within 24 hours.
