I
ITSME.ULTIMATE
- Jan 1, 1970
- 0
Lets say one is sizing a transformer powering a computer lab housing 200
computers.
Let's say each work station draws 150W/230VA for computer + LCD combined
with the CPU fully loaded.
The 200 workstations will add up to 30kW, but do not add up to 46kVA,
because harmonic loads cancel eachother out to some degree.
When you add them all together, the answer is 46kVA, but harmonic loads
cancel each other out to a certain degree so it will be less than that.
When sizing a transformer, do you assume the VA rating of all loads add
up?
computers.
Let's say each work station draws 150W/230VA for computer + LCD combined
with the CPU fully loaded.
The 200 workstations will add up to 30kW, but do not add up to 46kVA,
because harmonic loads cancel eachother out to some degree.
When you add them all together, the answer is 46kVA, but harmonic loads
cancel each other out to a certain degree so it will be less than that.
When sizing a transformer, do you assume the VA rating of all loads add
up?