Calibrating voltage indicators

[golfpaul]

Im getting everything setup for my part p assessment and am wondering if i need to get the voltage indicator calibrated, its the dilog combivolt 2.

Ta.

 

[Simonslimline]

Did it come with a calibration certificate?

 

[golfpaul]

Hmm not too sure, i don't think so, its about 18 months old.

 

[Plonker 3]

Simply buy a proving unit if you are that concerned

 

[golfpaul]

Im not concerned.
Does it need to be calibrated as part of a part p assessment?

 

[Plonker 3]

No, just needs to work, so either using a proving unit or a know source is satisfactory.

 

[Knobhead]

Simply buy a proving unit if you are that concerned

A grand total of 86p cheaper than a new unit.

 

[Lucien Nunes]

But you can use the proving unit on a dead site to verify your tester, which you can't do with another tester. One of each for me.

 

[golfpaul]

... And then calibrate the proving unit

 

[Lucien Nunes]

True, but it is in the nature of proving units that they don't tend to give out excessive output. A faulty indicator will often fail to indicate the presence of a hazardous voltage, which is not a fail-safe condition. A faulty proving unit would make you infer that your voltage indicator is faulty even when it is OK, rather than the other way around, so this is a fail-safe condition.

 

[GLENNSPARK]

jesus wept what a ridiculous thread

just prove the chuffin thing on a known source of supply....such as the incoming side of the incomer...

any part pis assessor will accept that....caus its perfectly acceptable to prove it using this method...

 

[Richard Burns]

A voltage indicator is an indicator, it is not precise so it does not need calibrating, it just need to work.

 

[shanky887614]

dont like the combi volts myself, I pmsl when my workmate opened his toolbox to find his tin snips had cut through cable.

I prefer testers with replaceable leads

 

[GLENNSPARK]

i`v got...oh about 5 proving units knockin about...
several campbell york`s...a couple of seawards and a martindale..

i`v got several AVIs...

A Martindale phase rotation tester and a Martindale voltage indicator...

loads of stuff like that...lockout gear n all...

 

[golfpaul]

jesus wept what a ridiculous thread

just prove the chuffin thing on a known source of supply....such as the incoming side of the incomer...

any part pis assessor will accept that....caus its perfectly acceptable to prove it using this method...

Sorry mate - just needed to know if it had to be calibrated or not, i'll get me' coat...

 

[ipf]

i`v got...oh about 5 proving units knockin about...
several campbell york`s...a couple of seawards and a martindale..

i`v got several AVIs...

A Martindale phase rotation tester and a Martindale voltage indicator...

loads of stuff like that...lockout gear n all...

Even calibrated that , too......:wink_smile:

 

[GLENNSPARK]

Sorry mate - just needed to know if it had to be calibrated or not, i'll get me' coat...

tek no notice of me mate..

i were just moanin....

 

[GLENNSPARK]

Sorry mate - just needed to know if it had to be calibrated or not, i'll get me' coat...

like i says....the incomer (incoming side) will be enough...

dont forget to re-prove the instrument AFTER you have tested for dead...if he asks you to show him a safe isolation....

remember about how to carry out polarity live as well....should he want to see you do this..

its unlikely though that he will ask for anything more than tea n biscuits, a loop test (Ze or Zs)..and maybe your 1/2, 1 & 5...

 

[GLENNSPARK]

if he asks you to carry out an RCD test...then dont forget to press the test button for the manual test..this is AFTER you have done the 1/2, 1 & 5 both half cycles...

 

[telectrix]

Sorry mate - just needed to know if it had to be calibrated or not, i'll get me' coat...

is your coat calibrated? must have sufficient thermal insulation for going out in the cold.