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Comparison Sigma 5710721 vs Sigma 5710821

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Sigma 5710721
Sigma 5710821
Sigma 5710721Sigma 5710821
Outdated ProductOutdated Product
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Fuelpetrolpetrol
Output voltage230 B230 B
Rated power2.2 kW2.2 kW
Max. power2.5 kW2.5 kW
Alternatorinverterinverter
Alternator windingcoppercopper
Engine
ICE type4-stroke4-stroke
Engine size212 cm³212 cm³
Power7 hp7 hp
Starter typemanualmanual
Fuel tank volume12 L7 L
Fuel level indicator
Motor coolingairair
Connection (sockets)
Total number of sockets22
Sockets 230 V16 A x216 A x2
Output 12 Vterminalsterminals
Features
Features
display
hour metre
voltmeter
display
hour metre
voltmeter
General
Sound level (7 m)72 dB72 dB
Dimensions530x450x550 mm450x370x470 mm
Weight26 kg25 kg
Added to E-Catalogjanuary 2023january 2023

Fuel tank volume

The volume of the fuel tank installed in the generator.

Knowing the fuel consumption (see above) and the capacity of the tank, you can calculate the operating time on one gas station (if it is not indicated in the specifications). However, a more capacious tank is also more bulky. Therefore, manufacturers choose tanks based on the general level and "voracity" of the generator — in order to provide an acceptable operating time without a significant increase in size and weight. So in general, this parameter is more of a reference than practically significant.

As for the numbers, in low-power models, tanks are installed for 5 – 10 liters, or even less ; in heavy professional equipment, this figure can exceed 50 liters.

Weight

The total weight of the unit - usually excluding fuel; the weight on full tank can be easily determined knowing the tank capacity.

In general, more powerful generators are inevitably heavier, but models with similar characteristics can differ significantly in weight. When assessing these differences and generally choosing an option based on weight, it is worth considering the specifics of the generator's use. So, if the device is often to be moved from place to place - for example, when used "on the road" - it may be worth paying attention to lighter units that are more convenient to transport. However, it is worth considering that the downside of a lightweight design is often an increased cost or a reduced degree of protection. But for stationary use, you can not pay special attention to this parameter - or even the opposite: choose a heavier (and, as a rule, more advanced and functional) option.

Regarding specific figures, it is worth noting that modern generators are generally quite massive. Thus, a small weight for such equipment is considered not only < 20 kg, but even 20-30 kg ; many units weigh 150-200 kg, or even more, and the weight of stationary industrial models is measured in tons.
Sigma 5710721 often compared
Sigma 5710821 often compared