110 VDC PSU capable of 100 AMP for 1 second repetitive. 1

[k1y9l8e7]

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 states the closing actuator in the Breakers can demand 100A for up to one second. We have some portable 110VDC batteries on site that arn't really up to the challenge of closing these breakers as much as is required during testing. We are not permitted to use the sub-station UPS batteries for testing/commissioning. These batteries have been used for LV switchgear control circuits and some other HV switchgear control circuits no problem but they are stuggling with these NDC 6 breakers.

After talks with HSS i found the equipment they use but this is £8-9000, i was hoping someone was aware of a cheaper alternative or any purpose designed equipment.

My calcs show a 15kW PSU @ 110V should be able to give 136Amps ish. Please correct me if i am wrong and any suggestions on where i can get this equipmentare greatly appreciated.

Kyle

 

[k1y9l8e7]

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.

 

[ScottyUK]

Matrix Power by any chance?

Bad luck on working in the Smoke, I did it for two years and that's more than enough for this lifetime. I'm a Geordie lad but living among the Smoggies. I think of myself as a missionary in this dark and godless place.


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If we learn from our mistakes I'm getting a great education!

 

[k1y9l8e7]

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 site work in the petro-chemical industry, South Hook LNG and Isle of Grain LNG and been to a couple of rigs off aberdeen but currently working on the London Underground which brings DC switchgear into the equation so always learning and having fun... sad I know Oh and as for the Smoke,...well anything is better than Bradford!

Kyle