Megger 1730 MFT. Not tripping on any RCD tests on known good circuit. | Page 2 | on ElectriciansForums
Guest viewing is limited

Discuss Megger 1730 MFT. Not tripping on any RCD tests on known good circuit. in the UK Electrical Forum area at ElectriciansForums.net

Marti

-
Arms
Joined
Jun 2, 2017
Messages
289
Reaction score
244
Location
Poole, Dorset
G'd Evening Lads an' Lasses,
I've got a Megger 1730 MFT; lovely bit of kit normally. Ex-demo - not had a hard life and was calibrated about eight weeks ago. I normally run it over a Cal-Card and a captive test RCD about once a month and this time it failed to trip the 30ma RCD on 1x, 5x and ramp. Tested all the RCD's in the house - same result. Reset everything to default - same result.

Has anyone seen anything like this? Really appreciate your thoughts. just started out on my own so the timing is ERR...unfortunate if it's terminal.
 
Hi Pete,
Tried both. The meter skips from test straight into the timer. Our 1720 comparison unit on 1/2 delta tested for 3 - 4 seconds then counted. Mine went straight to count. The 1720 then tripped on 1x and 5x delta. Mine just counted so it's going to Alpha.
 
Hi Pete,
Tried both. The meter skips from test straight into the timer. Our 1720 comparison unit on 1/2 delta tested for 3 - 4 seconds then counted. Mine went straight to count. The 1720 then tripped on 1x and 5x delta. Mine just counted so it's going to Alpha.
OK thanks, are the outgoing circuits still energised?
 
Update on the poorly Megger.
Took it into Barking and Dagenham College (did my C&G there) They tested my MFT and leads on a college rig with a known good 1720. Definitely a faulty unit. The only question is whether I caused this switching between functions whilst powered? Don't know but probably worth bearing in mind. Thanks for all the input guys.


Hi Marti,

Have you tried dropping it in to these guys.......

Test Instrument Calibration - Electronic Instrument Calibration Repair - Essex, UK - http://www.capitalcalibration.co.uk/

They are pretty helpful and calibrate and repair our testers all the time.
 
Hi Pete,
Tried both. The meter skips from test straight into the timer. Our 1720 comparison unit on 1/2 delta tested for 3 - 4 seconds then counted. Mine went straight to count. The 1720 then tripped on 1x and 5x delta. Mine just counted so it's going to Alpha.
 

Reply to Megger 1730 MFT. Not tripping on any RCD tests on known good circuit. in the UK Electrical Forum area at ElectriciansForums.net

News and Offers from Sponsors

  • Sticky
  • Article
Wicked I've just actually looked through it and it's very smart. Some good stuff in it. There's a tile association company that do a magazine...
Replies
2
Views
303
  • Article
OFFICIAL SPONSORS These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then...
Replies
0
Views
284
  • Article
Hi everyone, Another weekend, another sale! Get ready for colder days with Haverland Radiators, combining efficiency with modern design. Keep...
Replies
0
Views
356

OFFICIAL SPONSORS

Electrical Goods - Electrical Tools - Brand Names Electrician Courses Green Electrical Goods PCB Way Electrical Goods - Electrical Tools - Brand Names Pushfit Wire Connectors Electric Underfloor Heating Electrician Courses
These Official Forum Sponsors May Provide Discounts to Regular Forum Members - If you would like to sponsor us then CLICK HERE and post a thread with who you are, and we'll send you some stats etc

YOUR Unread Posts

This website was designed, optimised and is hosted by untold.media Operating under the name Untold Media since 2001.
Back
Top