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Topic 7 - Alternative Supplies

What characteristics are required of UPS systems?
Reliable start up at loss of supply
Long life battery with low self discharge rate
Regulated output for supply to sensitive equipment
Feed back into the grid
Must be small and compact
PV Array with inverter
Fuel generator
Uninterrupted Power Supply
An UPS system is generally used:
Mains supply, battery and load
Battery charger, battery and inverter
Battery, inverter and load
Mains supply, inverter and load
An inverter:
Converts AC to DC
Converts DC to AC
Rectifies AC to DC
Rectifies DC to AC
Conductors for overcurrent protective devices for an electricity converter must be no longer than:
1.5 metres
2.5 metres
10 metres
15 metres
Is it necessary to earth the output of an electricity converter?
Yes
No
Which Australian Standard provides guidance on the selection, installation and control of grid connect inverter systems?
AS 3000
AS 3011
AS 4777
AS 3008
What system of earthing is used for electricity generation systems?
Direct
MEN
ELCB
Separated
What is the defined input voltage of a stand alone inverter connected to a bank of 24 volt batteries?
48 volts
24 volts
12 volts
6 volts
An IP rating is:
An Installation Protection requirement for electrical equipment
An Isolation Protection requirement for electrical equipment
An International (ingress) Protection rating for electrical equipment
An Internal Power rating for an inverter
What happens to an inverter that is supplying electricity to the electricity grid when a grid power outage occurs?
It supplies power to the grid
The over current device operates
It shuts down immediately
It continues to operate as normal
Select four WHS requirements when installing a gen-set.
Exhaust emissions
VA output
Exposure to weather
Operating frequency
Hazardous areas
Noise output
Power factor
Is it permissible to use a switch which incorporates both AC and DC switching functions for an electricity converter which has batteries incorporated within it, for the purpose of control and isolation?
Yes
No
What situation must be present in order for overcurrent devices need to be omitted from an electricity converter?
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