WEG K20 ALE2
Series: K20
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WEG K20 – electric motor frame family for Australian MEPS registration: seven Ex and standard versions of 5.5 kW, 2-pole, 415 V, efficiency 88.6 to 90.3%
The K20 frame size is a family of three-phase motors from the Brazilian maker WEG of Jaraguá do Sul, Santa Catarina, whose name is formed from the initials of its founders Werner Ricardo Voigt, Eggon João da Silva and Geraldo Werninghaus. Within the K20 frame size the register distinguishes standard versions (ST) from the two IEC 60079 standardised explosion-protection types Ex d (flameproof enclosure, DE) and Ex n (non-sparking, NE), plus the AL code for the aluminium-housing version; the K20/1 code marks a second build length of the same frame size.
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The register lists here 7 versions with 5.5 kW at two poles and 415 V, efficiencies at full load from 88.6 to 90.3% and at 75% load from 88.5 to 90.2%, protection class IP55 and frame sizes from 112 to 132 to IEC, in the B3, B5, B14 and B35 foot mountings and the V1 to V36 flange versions, manufactured in Brazil and tested to AS/NZS 1359.5:2004 with test method B.
The K20 motors are part of the filings WEG makes for the Australian-New Zealand GEMS/MEPS market, whose minimum efficiency standards makers such as WEG regularly supply with new frame sizes and efficiency steps; the Ex-protected variants are aimed at use in hazardous areas such as refineries, chemical plants and mines.
On these industrial motors, the condition of the winding insulation, bearing condition and play, the tightness of the terminal box – especially important on the Ex versions – and the connection data on the rating plate count; spares and equivalent replacement motors run through the WEG distribution network.
Sources: Kennwerte der Modelle WEG K20 (Elektromotoren, MEPS-Registrierung), WEG (Hersteller)
Technical data
Engine
| Rated output | 5.5 kWcorrect |
|---|
Dimensions and weights
| Weight | 60.5 kgcorrect |
|---|
Electrical data
| Rated voltage | 415 Vcorrect |
|---|---|
| Number of poles | 2correct |
| Protection class | 55correct |
| Frame size | 132 S (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 load | 90.3 %correct |
| Efficiency at 75 % load | 90.2 %correct |
| Efficiency at half load | 88.4 %correct |
Origin and approval
| Country of manufacture | Brazilcorrect |
|---|
Other data
| Standard applied | AS/NZS 1359.5:2004correct |
|---|---|
| Test method | IEC 60034-2-1 (Edition 2.0)correct |
Frequently asked questions
How much power does the WEG K20 ALE2 have?
The WEG K20 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 25 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
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