Jump to content

ParsleyBill

Registered Users

Change your profile picture
  • Posts

    1
  • Joined

  • Last visited

Reputation

1 Neutral

1 Follower

  1. Hi, I work for a company that installs Electricity meters across the UK and as part of my role I carry out accuracy tests, I do not know how much the energy supplier charges for this, but I do this thoroughly and it takes me around an hour to do. The previous poster mentioned the test in a nutshell, what I do is take a fixed load heater with me, but first I need to test the voltage at the consumers equipment, bearing in mind that with the voltage fluctuations that occur across the grid the voltage that reaches your home can range from +10% or -6% so an accurate Voltage reading is essential. Once I have this reading then I turn on the fixed load and I record the current being drawn using my Clamp on Ammeter, from these two readings I can calculate the power (Watts) that is being instantaneously used. Then what I do next is record ten pulses/turn that the meter does and using a nifty formula I turn this into KW and this tells me what the meter was recording for the same fixed load. What I end up with is two measured loads, one from my Ammeter & Voltmeter and the other from the Meter, it is a simple comparison that allows you to find out what the accuracy is. I hope this explains what happens, personally I have carried out a few tests and so far the meter has been below 0.5% accurate and from here I spent an additional 30 mins going through the customers usage profile and this has made them appreciate what they are using at any time.
×
×
  • Create New...