I am looking at the Megger DCM305E Earth Leakage Clamp Meter.
For general domestic fault tracing.
Has anyone got opinions on this meter or a better alternative?
Regards,
Mike.
As a well known test equipment nut I have a battery of clamp meters. I am having treatment for this chronic illness so if you would like to send a bid was of cash it will help with my treatment and long term recovery!
For ordinary clamp meters any of the big 3 will do Megger, Fluke or Kewtech. Just make sure you get one with a True RMS function so you can see the 50HZ current and switch to wide band to see the harmonic current.
The most useful mini earth leakage clamp meter is the Megger DCM 300E because it is thin small jaws and can get around conductors in awkward places but on the downside you cant switch to True RMS. he jaws on this one are around 40mm diameter.
Next up in the dinky range is the new Megger DCM305E also with 40mm jaws but they are slightly thicker but you can do a 50Hz to wide band compare. Auto ranging and goes way down to sub 1mA (0.001mA) but in the power world not that useful. So a good all round clamp meter.
Next my trusty old Robin K2413F switchable between 50Hz and wide band . 70mm jaws for getting around big groups of cables but sometimes difficult to get in to tight spaces. No longer made so command a good price second hand. Kewtech who came out of the Robin stable when it ceased to exist do the same instrument re-badged at a tasty price.
Then my Martindale CM100 which has a current loop which is great for getting around a group of large 3 phase and neutral conductors that are widely spaced. True RMS so it can see harmonics. Resolution only down to 10mA which is fine for big distribution circuits, you can wrap the loop around the conductors twice to have the sensitivity.
All of the above earth leakage clamp meters will work as an ordinary high current clamp meter up to several hundred amps.
If I needed to buy a new earth leakage clamp meter to take to a desert island I would ask Kirsty for 2, and they would be the Megger DCM 305E and the Kyoritsu KEW 2413F from Kewtech for the big jaws. I would take Kirsty as my luxury item.
For my book it would have to be BS7671 but to quote Captain Black Adder, " perhaps with a Harrods Lingerie catalog tucked discreetly between the covers".
As a well known test equipment nut I have a battery of clamp meters. I am having treatment for this chronic illness so if you would like to send a bid was of cash it will help with my treatment and long term recovery!
For ordinary clamp meters any of the big 3 will do Megger, Fluke or Kewtech. Just make sure you get one with a True RMS function so you can see the 50HZ current and switch to wide band to see the harmonic current.
The most useful mini earth leakage clamp meter is the Megger DCM 300E because it is thin small jaws and can get around conductors in awkward places but on the downside you cant switch to True RMS. he jaws on this one are around 40mm diameter.
Next up in the dinky range is the new Megger DCM305E also with 40mm jaws but they are slightly thicker but you can do a 50Hz to wide band compare. Auto ranging and goes way down to sub 1mA (0.001mA) but in the power world not that useful. So a good all round clamp meter.
Next my trusty old Robin K2413F switchable between 50Hz and wide band . 70mm jaws for getting around big groups of cables but sometimes difficult to get in to tight spaces. No longer made so command a good price second hand. Kewtech who came out of the Robin stable when it ceased to exist do the same instrument re-badged at a tasty price.
Then my Martindale CM100 which has a current loop which is great for getting around a group of large 3 phase and neutral conductors that are widely spaced. True RMS so it can see harmonics. Resolution only down to 10mA which is fine for big distribution circuits, you can wrap the loop around the conductors twice to have the sensitivity.
All of the above earth leakage clamp meters will work as an ordinary high current clamp meter up to several hundred amps.
If I needed to buy a new earth leakage clamp meter to take to a desert island I would ask Kirsty for 2, and they would be the Megger DCM 305E and the Kyoritsu KEW 2413F from Kewtech for the big jaws. I would take Kirsty as my luxury item.
For my book it would have to be BS7671 but to quote Captain Black Adder, " perhaps with a Harrods Lingerie catalog tucked discreetly between the covers".
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