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Page 13 on the attached document suggests a 3.3kV system should be tested at 5 kV phase to phase (if your cables arn't screened) and 3 kV phase to earth/armour, although this is for new cables. Hope this is of help. Regards...

Not sure what voltage levels they can be used up to but the easiest and simplest relay range iv'e found is the GE Multilin range, Although I have imited experience, micoms seem to be all i see on the jobs im doing a the mo. You lost me on the siemens relays you quoted I only know of a siprotec...

Excellent thanks for this, at least now I should be able to stick some final service settings in without doing it all by hand. Regards, Kyle

Hi, Im looking to get the following software, "ABB REF542plus Configuration Tool VD4.02a" I need to communicate with an ABB REF 542plus Feeder Protection Relay tomorrow (short notice job) and have been all over ABB's site and eleswhere on the internet but cannot seem to find it to download...

Have worked as Matrix Power in the past with my firm, not sure if I should say the firm I'm at now?? Potential politics involved as I'm kind of subbed out within this firm I'm at, sorry. I worked for Switchgear & Instrumentation, based in Bradford, for 6 years, served my time there and did some...

Batteries still going strong, sitting around 120V after a full charge so all good. Scotty UK, yeah i work for a North England based firm but am working in London, if im up that way it's my round. Kyle.

Scotty UK & itSmoked, we have a working system!! Found the trim pot you mentioned after ringing the company that made the charger, charger output is now 124VDC. Added the extra battery back in so we now have two strings of 9 x 12V batteries in parallel. Charged them for a few hours and they...

PS i have just realised I should be calling them batteries not cells. I can't seem to see on the data sheet how many cells there are per battery but it does say "charged at 2.275V per cell", so does this mean 6 cells per battery? (6 x 2.275 = 13.65V) Thanks.

ScottyUk and itsmoked thanks, this would explain a lot. The exact battery is "YUASA NP7 - 12, 12V, 7AH, valve regulated, lead acid battery", data sheet attached. Just to let you know i have changed the set up (again) in a bid to share the load on the batteries. I have made up 3 banks in...

Smallgreek, thanks for this, we have a Programma B10-E with us on site but the DC output currnet is <10A @ 110VDC so is a no go for this aplication. Unfortunatley as you mentioned we have Protection Relays and sensitive Breaker Control Modules on the same 110VDC supply circuit in this board and...

Thanks will look look into this, not sure it will be an option but maybe for future works, much appreciated.

thanks davidbeach for this suggestion, unfortunatley there is a strict proceedure in place for the testing of these boards generated by the customer. The breakers have several auxillaies that require testing to SCADA and then the breakers also contain mechanical and electrical interlocks with...

itsmoked, thanks for this, worse case is usually a few seconds between the pulses a few times and then a minute or so rest while looking at/highlighting the drawing etc. they get the most stick during the functional checking of the control circuit, open/close protection trips etc. Also these are...

Thanks Scotty UK, we were thinking this would work but unfortunatley we are rotating about 3 substations, 2 weeks in each repeating, there are also COSHH restrictions in place regarding open batteries. At the moment we have a set up of 9 12V 7AH, two sets in parrallel, these are relativley...

Hi, I'm looking for information on where i can get a 110VDC PSU that will deliver 100A for a second repetitivley (as required during testing/commissioning?) I am currently pre-commissioning some Hawker Siddeley Switchgear (HSS), the DC Lighning range with NDC 6 circuit breakers, the literature...

Thanks Scotty UK for trting to help, as mentioned by Ohmly it is called a mouthorgan (Only just discovered that myself) and yes your right posting that invoice was naive. Again if anybody hears of anyone selling any it would be appreciated. Thanks Kyle

Hi to all, Brand new to this so hope i'm getting it right... I've recently started a new job at a firm who conduct HV Switchgear services, maintainence, testing commissioning etc. I require some old style test blocks for GEC Alsthom electromechanical relays that I have never worked with...