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Rototech Hu280S-2

Series: Other models

Source: https://rototech.sg/news/rototech-pte-ltd-demonstrates-roto-

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The Rototech Hu280S-2 is a three-phase induction motor. The rated output is 75 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 280. The protection class is IP55. The efficiency is 94.6 per cent at full load, 94.6 per cent at 75 per cent load and 90.4 per cent at half load. The motor weighs 544 kg. At full load it delivers 241.1 Nm. Mounting arrangements to IEC 60034-7: B3, B5 and B35. The motor is built in China. The data is based on the Australian MEPS registration under standard AS/NZS 1359.5:2000 (Legacy); measured to AS 1359.102.1:1997. Rated output across the Rototech range ranges from 0.75 to 160 kW; the Hu280S-2 sits in the middle of that range with 75 kW. Its immediate neighbours are the Hu315S-8 below it with 55 kW and the Hu280M-2 above it with 90 kW. 83 Rototech models are on record. The model is listed under Electric motors. 24 verified figures from 1 source are on file.

Rototech – other models: the collective page of MEPS-registered three-phase motors outside the named ranges, frame sizes 80 to 355, 0.75 to 160 kW, 2- to 8-pole, 415 V, IP55

This page gathers the three-phase motors carried in the Australian energy-efficiency register under the Rototech brand, which the register does not assign to a named range. No reliable information is available on Rototech's headquarters or group ownership. The type designations follow the scheme Hu with IEC frame size, a foot-form letter and pole count, e.g. Hu100L-2 or Hu160M-6; the further meaning of the Hu code cannot be established from the dump.

Read on 3 more paragraphs

The register lists here 83 versions with 0.75 to 160 kW, two- to eight-pole, all rated for 415 V. Full-load efficiencies run between 71 and 95.4%, and at 75% load between 69 and 95.3%. All 83 motors are built to protection rating IP55, frame sizes run from 80 to 355 under IEC, manufactured consistently in China and tested under the older 2000 Legacy standard with test method B. None of the 83 motors is classified under the Australian High Efficiency Level. The mounting code is consistently the combination B3/B5/B35.

The page thus covers a uniformly built IEC standard-motor programme without efficiency certification, common in the spares trade and retrofitting of older plant; the wide spread of frame sizes up to 355 shows that Rototech also carries larger industrial drives in its programme.

When buying used, what matters is 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 efficiency class; since none of the motors carries a High Efficiency Level certification, for continuous duty it is worth comparing against IE2/IE3 alternatives. Spares depend on the distribution channel.

Sources: Kennwerte der Modelle Rototech (weitere Modelle, MEPS-Registrierungen)

Technical data

Engine

Rated output75 kWcorrect

Dimensions and weights

Weight544 kgcorrect

Electrical data

Rated voltage415 Vcorrect
Number of poles2correct
Protection class55correct
Frame size280correct
Mounting (IEC 60034-7)B3, B5, B35correct
Efficiency at full load94.6 %correct
Efficiency at 75 % load94.6 %correct
Efficiency at half load90.4 %correct

Origin and approval

Country of manufactureChinacorrect

Other data

Standard appliedAS/NZS 1359.5:2000 (Legacy)correct
Test methodAS 1359.102.1:1997correct

Frequently asked questions

How much power does the Rototech Hu280S-2 have?

The Rototech Hu280S-2 delivers 75 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

Hu100L-2

Hu100L-6

Hu100LA-4

Hu100LA-8

Hu100LB-4

Hu100LB-8

Hu112M-2

Hu112M-4

Hu112M-6

Hu112M-8

Hu132M-4

Hu132M-8

Sources: [1]

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