Technical Info about Generators

Generator Specials

Generators, What to know when buying a Diesel Generator.

Buying a Generator

To buy a generator can be a complicated task, as there is a lot to keep in consideration.
Here some things to keep in mind:

Electrical power needed Kw, Kva or Amps, Hz: 50 or 60, Volts, three phases or single phase.

Heavy duty or only stand by. (Duty cycle.)

Are you planning more equipment in the future to be installed at your factory, or office like air conditioners or more industrial equipment etc.?


Technologies, UPS, alternative energy, monthly costs etc.

Do you need remote starting and change over switching, or automatic change over switching and starting, or manual switching with manual start?

After sales service and parts.

silent diesel generators for sale.

How do you decide what generator to buy, and why should I choose a certain generator before another make generator. Let’s talk facts!


Power generators is complex machines, it consist of an engine and alternator coupled together mostly by means of a flex direct coupling. Other older means is V-belts and rubber couplings. Like any machine the engine is complex and can consist of an ecu to manage the fuel delivery to the engine, or by a mechanical pump. There is a lot of moving parts in the engine and therefore good workmanship is needed to ensure a good engine life.

Industrial generators runs at 1500 rpm also called the 4-pole generator. These generators require a larger output engine than the ordinary small 3000 rpm (2-pole) generators. Therefore the industrial generators are much more expensive than the 2-pole generators. The industrial generators can outlast the 2-pole generator by far and can run continuously. Also another benefit is that as the (4-pole) industrial generator runs only at 1500 rpm and therefore is much more silent then the high revving 3000rpm generator.

generator types


Today most machining is done by computerised machines, and therefore faults are mostly eliminated, by quality checks. What are we saying? The more you produce complex tolerance machined parts, the more is it important to use quality machines and tools to produce quality machined parts with the correct tolerances.  Trained and experienced personnel are needed to check machined parts and components for quality.

buying generators


Quality of parts and equipment used is important for the product to deliver what it is made for, here some examples.

  1. Any part requires a certain type and or composition of materials to perform at its best, mostly had been researched and tested for long periods of time. A part like an oil seal that work at 80 degrees Celsius, if the materials used does not comply with these tested parameters it will fail.

  2. Is that product tested in the country it is supplied, ambient temperatures, humidity, sea level ratings etc.?

  3. Machined tolerances and quality checks.



Employees that is experienced and trained in their work will deliver good results. Also do not forget the correct programing and set up of robots and cnc machines, to deliver parts and components at the correct tolerances. Therefore good results will be achieved.             

Power Pack range

Newtontech Power

We at Newtontech Power only use parts and components from leading brand name manufacturers, components like engines, alternators and electrical equipment etc.


Power supply switching and monitoring.

Auto Mains Control Module

(AMF) Auto mains failure: This is a module that control the engine and (ATS) Automatic transfer switches. There are several brands available in the market, and some with more features than the other. Also available is generator synchronization, this module can synchronize more than one generator with each other and therefore fuel is saved if the power demand is not that high. Generator controllers have different capabilities, like signal starting, monitoring of mains, engine, alternator and more. Also power output monitoring is available on most models.

Newtontech Power always fits generator controller PLC that is tested and reliable. Most of our diesel generator product range is equipped as standard with high quality Engine and ATS control and monitoring module, that protects the engine and generator set and monitors the power output.

A basic description of the different generator control modules is:

Auto Start control modules.

Auto Mains Failure control modules.

Manual Start control modules

Synchronizing and Load Sharing control modules

Remote Communication modules

Newtontech Power adds another extra fuel monitoring sensor, to show when there is a low fuel problem, and the diesel generator will be able to run at least another hour before it shut down when empty. This function can be easily customized to warn you by a buzzer or a remote light. The generator will shut down at an empty fuel state, and will easily start as the fuel is filled. This option is standard on all stationary models.

transfer switch

(ATS) Automatic Transfer Switching

These switches can be placed in two categories, motorized and magnetic. Automatic switches are all remote controlled, using a signal to do the change over from one power supply to another. The motorized change over switch can sometime also be override by a manual lever. The magnetic change over switch consists of magnetic contact ors that are connected to do the changeover switching.

Some switches can be repaired and have spare parts available, and other switches needs to be replaced when failed. Especially the larger more expensive switches have parts like motors, magnet coils, contact points etc.

The basic is that the contact ors must be able to withstand the required load, when switching. There always must be overload protection before the changeover switch on all the incoming power supplies.

Manual change over switches is the less expensive but requires a person to do the change over from one power supply to another manually. This option will work when there is a person on site, or when it is not needed to have an automatic change over system.

Newtontech generators have an option to integrate the changeover system into the generator, and make it easier to connect the generator to your mains distribution board. This option is available on the small and medium range generators up to 500Kva. This option is practical when the diesel generator is mounted near the mains distribution board.

High and low speed Generators

High speed 2 pole generators, 3000rpm @ 50Hz

High speed generator.

2 Pole generators. These generators use a 2 pole rotor that forms a magnet with a north and a south pole when energised. This generator only consists of 2 poles and needs to run at 3000 rpm to generate electricity at the right volts and frequency.

2 pole generators is most likely light duty. Sizes range from as low as 200W up to 10Kva.

high speed generators

Benefits of the 2 pole generators: First of all, it is much cheaper than the industrial 4 pole generators; the engines displacement is smaller and is lighter than the 4 pole generators. These generators can be easily moved around, and is ideal for lighter work where there is no electricity.

We at Newtontech Power stock a whole range of leading brand name generator sets. We can provide you with standby diesel generators for most uses. Included in our range are mobile welding generators, ideal for farms and mining. More products like lighting tower generators also available.

Brand Names include Yamaha, Hatz, Honda, Yanmar and more.

Low Speed 4 Pole generator set, 1500rpm @ 50Hz

Low speed gen set.

Industrial generators. These generators are designed to run continuously. Alternators consist of 4 poles, this machines runs at 1500 rpm for 50 Hz and 1800 rpm for 60 Hz. This ensures long running hours and reduces noise levels.

Power Pack Generators

Industrial diesel generator sizes from Newtontech Power starts from 10 Kva up to 2MW. For reliable alternative power solutions look no further. Newtontech Power industrial diesel generators include a 24 month or 2000 hours warrantee.