Dovers 250
Series: Other models
The Dovers 250 is a three-phase induction motor built by Dovers. The rated output is 55 kW. The motor is two-pole, which at 50 Hz gives a synchronous speed of 3,000 rpm. The rated voltage is 415 V. The housing is frame size 250 M in foot-mounted form. The protection class is IP55. The efficiency is 93.4 per cent at full load, 92.6 per cent at 75 per cent load and 90.4 per cent at half load. The motor weighs 405 kg. Mounting arrangements to IEC 60034-7: B3, B35, B34, B5, B14 and V1. The motor is built in China. The values are recorded in the Australian MEPS registration under the GEMS Determination 2012; measured to AS/NZS 1359.102.3:2000. Rated output across the Dovers range ranges from 0.75 to 110 kW; the 250 sits in the middle of that range with 55 kW. Its immediate neighbours are the 225 below it with 45 kW and the 280 above it with 110 kW. 13 Dovers models are on record. The model is listed under Electric motors. 24 verified figures from 1 source are on file.
Technical data
Engine
| Rated output | 55 kWcorrect |
|---|
Dimensions and weights
| Weight | 405 kgcorrect |
|---|
Electrical data
| Rated voltage | 415 Vcorrect |
|---|---|
| Number of poles | 2correct |
| Protection class | IP55correct |
| Frame size | 250 M (foot)correct |
| Mounting (IEC 60034-7) | B3, B35, B34, B5, B14, V1correct |
| Efficiency at full load | 93.4 %correct |
| Efficiency at 75 % load | 92.6 %correct |
| Efficiency at half load | 90.4 %correct |
Origin and approval
| Country of manufacture | Chinacorrect |
|---|---|
| Standard applied | Greenhouse and Energy Minimum Standards (Three Phase Electric Motors) Determination 2012correct |
| Test method | AS/NZS 1359.102.3:2000correct |
Frequently asked questions
How much power does the Dovers 250 have?
The Dovers 250 delivers 55 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
Sources: [1]
Electric motor in 3D section
Turn the model, look inside and click an assembly — each one is explained.