Post by smokensparks on Sept 9, 2018 8:36:49 GMT -5
HELP! I just purchased an ABB D5S-8 120 VAC Single Phase watthour meter to rig up a test jig so I can monitor energy consumption of individual appliances. The meter does not have its mounting socket so I must hard wire/solder the connections to the back. Does anyone have an idea of the connecting scheme for this meter? Thanks so much. This is a great forum.
Post by mikeymeter on Sept 9, 2018 11:37:13 GMT -5
Hi, What Form is this meter? I use to have a website saved on my favorites that had all the wiring and socket diagrams for all the Forms of watt hour meters. Is your meter transformer rated? I will try to find that website again and I'll send you the link.
Post by smokensparks on Sept 9, 2018 12:24:26 GMT -5
Mike, Thank you for your helpful information. I think I am about to learn something new. I've been working in electronics for many years but never did very much with a device such as a watthour meter so my education is about to begin!
I am attaching side and front photos of the meter. Having just purchased the meter it has not yet arrived but I suspect I purchased only part of what I need to measure kWh and that the current transformers would be found inside the meter mount. Is this correct? If so, other than finding a mating meter mount is there a "workaround" so I can sense current such as the clamp found on an AC current meter?
I should have done more research before buying this but fortunately my investment is very small.
Post by mikeymeter on Sept 9, 2018 16:01:47 GMT -5
Hi, Are you looking for a standard type meter? I have lots of A-base (bottom connected) meters in my collection. I have several that are 120 volt, 100 amp max capacity and very easy to wire-up. If you like, I can send you one, just pay for the packing and shipping. I have restored these meters and they work great. The meter shown is a Duncan MK-A that is selectable between 120 volts or 240 volts. Presently, it is set at 120 volts. The 15 Amp rating is for Test Amps. This meter has a 667% overload compensation which allows it to handle up to and including 100 amps safely. 15 amps x 667% overload comp / 100 (%) = 100 amp max capacity. This meter also has a cyclometer register or I can change it to a pointer style register, your choice. Both styles of registers have Rr = 27 & 7/9th's. Rr stands for register ratio. It is the number of times the first register gear has to rotate for the 10's pointer or drum to make one complete rotation back to zero.
Last Edit: Sept 9, 2018 16:28:56 GMT -5 by mikeymeter
Post by mikeymeter on Sept 9, 2018 16:34:35 GMT -5
Hi, Yes, your meter would require 200:5 current transformers for proper operation. These transformers are usually contained within a circuit box coming directly off a drop line. They are basically a coil that surrounds each of the drop lines. The transformer's lines would then connect directly to the meter's current coils. To be performed by a skilled lineman or electrician.
Do you have an email address? I can send you lots more pictures of the Duncan meter and wire-up, very easy.
Mine is firstname.lastname@example.org
Last Edit: Sept 9, 2018 16:36:29 GMT -5 by mikeymeter
Post by Meter Repair on Sept 9, 2018 22:41:53 GMT -5
hi and welcome to the forum! yes that would be a complex meter to set up for tinkering with monitoring consumption from home appliances. i have MANY home appliances monitored by dedicated watthour meters, see my collections page.
as others suggest, a 120v A BASE watthour meter would be the simplest AND QUICKEST to wire up.
i too have been in electronics for many years, i worked at a factory for 5 years test/troubleshoot and repairing circuit boards. now electronics is a hobby