Wonder ZWE

The register lists 16 versions with 14 to 110 kW rated output, two- to six-pole, at a supply voltage of 400/415/440/690 V. Full-load efficiencies range from 89.4 to 94.91%, and at 75% load from 89.82 to 94.83%. Protection ratings run from IP55 through IP56 to IP66, mounting codes from B3 through B5, B6, B7, B8 and B35 to the vertical forms V1, V3, V5, V6 and V36. Testing followed the 2012 GEMS determination (Three Phase Electric Motors) with test method A; none of the 16 versions reach a High Efficiency classification.

The range thus covers the mid to upper power band of classic three-phase standard motors for pumps, fans, conveyors and general industrial drives; registration under the Australian GEMS standard shows that the Chinese manufacturing programme is also certified for the Australian market, where it competes on price with established brands.

When buying used, bearing condition and a checked insulation resistance of the winding, visible overheating marks on the terminal box and fan cover, the condition of shaft and key, and a legible nameplate with frame size, pole count and voltage code matter; since none of the motors carry a High Efficiency classification, anyone running the motor on variable-speed control should separately check its inverter suitability.