Fluke 1663 questions.

Attilio Rossitt · Tuesday at 2:25 AM

I emailed FLUKE and they didn't even respond, so much for SUPPORT.

Firstly when using the Continuity function ( Low Ohms) the options include

test current 10ma/250ma, which the manual suggest 10ma if rcd tripping is to be prevented. Who test continuity on live circuits ????????.
test current polarity. The only application that I see it being used is for diode applications and being equivalent to lead reversal.

If checking the settings for test current with resistors of known values the two options provide different results. The users manual does not provide any usable information . Can anyone shed some light on these options.

Secondly the Earth Stake resistance function " Re" which requires fly leads which will have resistance but unlike other options do not need zeroing or have the option.??????????

Any members with any tips, tricks or advice are welcome to reply

Pretty Mouth · Tuesday at 7:38 AM

Attilio Rossitt said:
test current 10ma/250ma, which the manual suggest 10ma if rcd tripping is to be prevented. Who test continuity on live circuits ????????.

The circuit you're working on may be dead, but the RCD may be live, serving several other circuits. Unless you disconnect the circuit N at the CU, it may be possible to trip the RCD.

PS Electrics · Tuesday at 12:24 PM

Attilio Rossitt said:
Secondly the Earth Stake resistance function " Re" which requires fly leads which will have resistance but unlike other options do not need zeroing or have the option.??????????

If you look at the diagram for this test it is only measuring the resistance between each stake. So as long as all the leads are of the same length and type it won't matter what the lead resistance is.