Industrial Backup
Three-phase power for workshops, small factories and cold rooms, whether the grid fails now and then or every day.
- Three-phase sets from 5.5 to 55 kVA at 50 Hz
- Water-cooled silent sets at 60 to 62 dB(A) for long hours
- CE marking and EU Stage V engine emissions
The challenge
Factories and commercial facilities can't afford unplanned downtime. Standby and prime power must start reliably, run quietly enough for occupied sites, and hold stable voltage for sensitive equipment. HTX silent generator sets deliver dependable backup with low noise and Euro V–compliant operation.
What a workshop or small factory asks of a generator
A workshop or small factory runs three-phase motors: compressors, lathes, mills, pumps and refrigeration. Lights, offices and computers sit on single-phase circuits of the same supply.
The generator has to start the largest motor while everything else is already running. It also has to carry a load that changes all day, as machines switch on and off.
The first question is how often the grid fails. If cuts are rare and short, the set is a standby machine. If the grid fails every day for hours, or there is no grid, the set works as the main supply and must be sized on its prime rating.
Matching the set to the operation
Typical running loads. List your machines and use the generator size calculator for the starting surge.
| Operation | Typical running load | HTX models |
|---|---|---|
| Workshop: lathe, drill press, compressor, lights | 10 to 20 kVA, three-phase | HTX-G20K-S, HTX-G24K-S |
| Cold room or refrigeration plus a small shop | 15 to 25 kVA | HTX-G19K-WS3, HTX-G24K-S |
| Small factory with daily outages of several hours | 20 to 35 kVA | HTX-G31K-WS3 |
| Several production machines, long running hours | 40 to 55 kVA | HTX-G55K-WS3 |
| Office, servers and lights only | 8 to 10 kVA | HTX-G10K-WS, HTX-G12K-S |
Recommended equipment
Matched to your operation
Recommended HTX equipment for this application:
2.8kVA Open Frame Diesel Generator Set
2.8 kVA
Request Quote
4.5kVA Silent Diesel Generator Set
4.5 kVA
Request Quote 3kVA Inverter Diesel Generator Set
3 kVA
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10kVA Single-Phase Water-Cooled Silent Diesel Generator Set
10 kVA
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4.5kVA Open Frame Diesel Generator Set
4.5 kVA
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5.3kVA Silent Diesel Generator Set
5.3 kVA
Request QuoteWhat to decide before you order
- Prime or standby rating. Standby is for outages only, with limited hours a year. If the set runs every day, compare prime ratings and keep the average load around 70% of prime. See prime vs standby power.
- Air-cooled or water-cooled. Our air-cooled silent sets go up to 21.2 kVA three-phase and measure 72 to 74 dB(A) at 7 m. Our water-cooled silent sets go from 10 to 55 kVA and measure 60 to 62 dB(A) at 7 m (50 Hz). For long daily hours, water-cooled is the better choice.
- Automatic start. An automatic transfer switch (ATS) starts the set when the grid fails and moves the load back when it returns. ATS and remote start are available on our electric-start models. See what an ATS does.
- Phase balance. Spread single-phase loads evenly across the three phases. A heavily unbalanced load overheats the alternator.
- Installation. The set needs air in, hot air out and an exhaust pipe away from the building. See how to install a diesel generator.
Questions industrial buyers ask
Should I size a factory generator on prime or standby power?
On prime if the set runs every day or the grid is unreliable. Standby ratings allow only limited hours a year. Keep the average load around 70% of the prime rating, and make sure the largest motor can start with everything else running.
Is a water-cooled generator better than an air-cooled one for daily use?
For long daily hours, yes. Water-cooled engines run cooler and quieter: our water-cooled silent sets measure 60 to 62 dB(A) at 7 m, against 72 to 74 dB(A) for our air-cooled silent sets. Air-cooled sets are lighter and simpler for shorter duty.
Can the generator start by itself when the power fails?
Yes, with an automatic transfer switch. It is available on our electric-start models. The ATS detects the outage, starts the set, moves the load, and returns it to the grid when power comes back.
What voltage and frequency do your three-phase sets supply?
At 50 Hz our three-phase sets supply 400/230 V, and most are also available at 60 Hz. Other voltages depend on the model. Tell us the supply at your site and we will confirm the configuration.
Related guides
Need help choosing?
Our engineering team will match the right unit to your duty cycle and conditions.