They do come in higher voltages, for testing transformers and high voltage cables - The one I have been using recently does 2.5kV and 5kV. Also we use an 80kV test set, and if we need more than that, we have a truck with a 250kV transformer on the back :twisted:. u must also use double the normal voltage (thats why u have 250v, 500v and 1000v)
I always tell the work experience lads to hold the leads as tight as they can - but they never believe you 8)spuffock said:The Megger is current limited, it will give about 8 milliamps into a short circuit. If you have a good contact with the skin, it is just possible to show no obvious reaction to it. One of the younger electricians tried the old "Hold these wires,mate" routine on me. I washed my hands first, and held the croc clips tightly with wet hands while he wound the handle like fury. Afterwards, I walked away from him thinking "wait for it!"
Think 'short circuit', how many volts are across a short? zilch, the resistance is too low.grrr_arrghh said:why does holding it tighter reduce the shock?
It's a high impedance source, so the lower the resistance on the output the lower the voltage - by holding the leads as tight as you can, particularly if you have damp or sweating hands, it pulls the voltage too low to feel.grrr_arrghh said:why does holding it tighter reduce the shock?
It's a Record 5G/203, I presume it probably dates from the 2nd World War, it's got War Department marks on it - and it's in a nicely sewn leather case.Phasor said:That's pretty poor performance - Aussie requirements are that the output voltage is 500V +/- 10% when loaded with 1 megohm (ie, 450-550V). What model are you using?Nigel Goodwin said:A 10 megaohm digital meter pulls the voltage output down to about 350V from 500V.