C + C Flashcards
What does C+C stand for
Control and communication
Define a converted supply
A supply that’s had it’s voltage and/or it’s frequency changed
What voltages are used on a C+C switchboard
24DC + 115v 400Hz
What does TRU stand for?
Transformer rectifier Unit
2 categories of batteries
Primary n secondary
What’s battery capacity measured in?
Amp-hour
Where can we find the batteries capacity?
Supplied by the manufacturer
The nominal voltage of a single cell secondary battery?
2.1v
What’s the discharge voltage of a single cell secondary battery?
1.75v
What does RTR stand for?
Rationalised transformer rectifier
What does RICE stand for?
Rationalised internal communications equipment
What is a battery?
A number of cells connected in series
2 types of battery?
Portable and static
Primary battery characteristics
Not rechargeable
Known as “dry cells”
Once discharged they are thrown away
Normally small
Secondary batteries characteristics?
Rechargeable
“Wet cells”
Require specialist recharging equipment
Variety of sizes
