We measure and calculate the right size for your needs and help you to find the right supplier.
The Power of Generator, UPS and Inverter is most labeled with KVA.. It depends on the efficienci factor but roughly KVA x 0.7 = KW
Generators with more Power coming most with Diesel Motors
If you need a 5-10KVA generator for remaining power (mobile snack-bar, weekend house, farm work, ..) you should decide for a Diesel Generator or a Petrol Generator with 2 cylinder. A NO-NAME Generator is here not always the best solution.
Latest by a supply with 3x150A or more you should go for an Change-Over Switch operating with contactors.
An AUTOMATIC Change-Over Switch is always and for each Generator possible. The Generator starts in this moment automaticly when the Power trips.
A common size to bridge the power-supply for some hours (Power-Failure) in a Household or small Business is a 5 to 7.5 KVA petrol (1-Cylinder Motor) Generator
This size is enough to run your lights, fridge, TV, computers, etc. and a kettle or 1-2 plates on your stove.
Just switch off the geyser and pumps at the DB (elec. Distribution Board)
To reduce the noise there a sound-damping boxes on the market or you fix your own.
Standard is a Manual Change-Over Switch installed close to your DB. But of course a more expensive Automatic Change-Over is possible as well.
We deliver and install Single or 3-Phase Generators for Household and small Business
UPS & Inverter
To recommend for Computers, TV’s & decoder, and moveable/pluggable lamps.
But as a Power-Supply by a Power-Failure or Load-Shedding to compare with a Generator expensive and only for small applications.
Even a legal installation with Certificate of Compliance is with this small units most more expensive as the installation of a generator. It can’t operate with a change-over switch. You have to split the different circuits or install new circuits
The price of special batteries and the life-time of this batteries makes it expensive
But the noise pollution is undisturbing.
Runtime Guide for Inverter with one 12V and 100A/h Battery
Runtime Full Load
Runtime Half Load
600W/1KVA
60 min / 600W
120 min / 300W
1KW/1.65KVA
45 min / 1000W
90 min / 500W
1.5KW/2.4KVA
30 min / 1500W
60 min / 750W
2KW/3.3KVA
15 min / 2000W
30 min / 1000W
You increase the Runtime with a second or third Battery by 12V Invertes
By 24V Inverters (from 2KW up recommended) you need from the beginning 2x 12V Batteries (or 1x 24V Battery)
By 24V Inverters you have to double with 2x12V Batteries (or 1x24V Battery)
Power Usage Guide
LED Down Light
5Watt
Energy Saver Lamp
10Watt
Alarm System
20Watt
LED Spot Lights
10-50Watt
Cell Phone Charger
5Watt
Satellite & Decoder
30Watt
Flat Screen TV
50-150Watt
DVD Player
50-200Watt
Tablet
20Watt
Computer & Modem
+/- 200Watt
Fan
+/-100Watt
The Power of Generator, UPS and Inverter is most labeled with KVA.. It depends on the efficienci factor but roughly KVA x 0.7 = KW