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WEG K21A ALE2

Series: Other models

Source: https://www.weg.net/institutional/BN/en/news/products-and-so

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The WEG K21A ALE2 is a three-phase induction motor built by WEG. The rated output is 5.5 kW. The motor is six-pole, which at 50 Hz gives a synchronous speed of 1,000 rpm. The rated voltage is 415 V. The housing is frame size 132 M in foot-mounted form. The protection class is IP55. The efficiency is 88.1 per cent at full load, 87.9 per cent at 75 per cent load and 84 per cent at half load. The motor weighs 79 kg. At full load it delivers 54.59 Nm. The motor is built in Brazil. The values are recorded in the Australian MEPS registration under standard AS/NZS 1359.5:2004; measured to IEC 60034-2-1 (Edition 2.0). Rated output across the WEG range ranges from 0.75 to 160 kW; the K21A ALE2 sits at the bottom of that range with 5.5 kW. Its immediate neighbours are the KTE198 PHEM below it with 4 kW and the K24 ALE2 above it with 7.5 kW. 433 WEG models are on record. The model is listed under Electric motors. 24 verified figures from 1 source are on file.

WEG – other models: the collective page of three-phase motors outside the named ranges from the Australian GEMS/MEPS register, 0.75 to 160 kW, 2- to 8-pole, IEC frame sizes 80 to 355, efficiencies up to 96.3%

This page gathers the WEG three-phase motors the register could not assign to a named range, recording them individually from the Australian GEMS/MEPS registration database for electric motors. WEG was founded in 1961 in Jaraguá do Sul, Brazil, the name taken from the initials of its three founders, and the manufacturer is today one of the world's largest builders of electric motors. The models recorded here come almost entirely from Brazilian production. The type plates follow noticeably different schemes: codes such as 160M appear to name the IEC frame size directly, while ranges such as K10A or K11 seem more likely to mark a product family with protection- and ignition-safety variants (ALE, EXNE, EXDE, STDE) – this cannot be inferred from the codes alone with certainty.

Read on 3 more paragraphs

The register lists here 375 versions from 0.75 to 160 kW, 2- to 8-pole, with efficiencies from 76 to 96.3% at full load and 73.5 to 96.3% at 75% load, protection classes from IP55 to IP66 and frame sizes from 80 to 355 (IEC). For 106 of the models the register shows the classification "2005 High Efficiency Level", roughly equivalent to class IE2; the majority carry no such classification.

Alongside ABB and Siemens, WEG is one of the volume manufacturers of industrial three-phase motors, and this collective page covers the broad middle ground of standard motors not assigned to any separately maintained range – from small units for pumps and fans to motors for compressors and conveying plant.

For used WEG standard motors the rating plate comes first: frame size, pole count, efficiency class and protection class must match the intended application. Beyond that comes an insulation resistance test of the winding, the condition of the bearings (running noise, bearing play, re-greasing ability on larger frames), free running of the shaft, the condition of the fan and fan cowl, and – for planned inverter operation – whether the winding insulation and bearings are rated for operation on a variable-frequency drive.

Sources: Kennwerte der Modelle WEG (weitere Modelle), WEG (Hersteller)

Technical data

Engine

Rated output5.5 kWcorrect

Dimensions and weights

Weight79 kgcorrect

Electrical data

Rated voltage415 Vcorrect
Number of poles6correct
Protection class55correct
Frame size132 M (foot)correct
Mounting (IEC 60034-7)B3, B5, B35, B34, B14, B6, B7, B8, V5, V6, V1, V3, V15, V36, V18, V19correct
Efficiency at full load88.1 %correct
Efficiency at 75 % load87.9 %correct
Efficiency at half load84 %correct

Origin and approval

Country of manufactureBrazilcorrect

Other data

Standard appliedAS/NZS 1359.5:2004correct
Test methodIEC 60034-2-1 (Edition 2.0)correct

Frequently asked questions

How much power does the WEG K21A ALE2 have?

The WEG K21A ALE2 delivers 5.5 kW.

What to check before buying

  • Match the data plate against the order: frame size, mounting and rating have to agree.
  • Check the ingress rating against the installation site — outdoors or in dust the demands differ.
  • Hold the mounting form and dimensions against the existing seat before ordering.
  • The pole count sets the speed — when replacing an older unit, compare this first.
  • For used units, ask about winding condition and bearing play.
  • Ask about parts availability for this series — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 24 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.

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Other models in this series

02018ET3ER256TC-W22

04036ET3E324TSC-W22

05036ET3E326TSC-W22

160M

20373936

5.5KW2P

A020873936

A070529946

A070556678

K10A ALE2

K10A EXNE2

K10A STDE2

Sources: [1]

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