John (Trovato), You might want to read the following ETSI standards which describe Telecommunications Power Systems Interface Requirements :-
ETS 300 132-1 : Equipment Engineering (EE); Power supply interface at the input to telecommunications equipment interface Part 1: Interface operated by Alternating Current (AC) ETS 300 322-2 : Equipment Engineering (EE); Power supply interface at the input to telecommunications equipment interface Part 2: Interface operated by Direct Current (DC) Also British Telecom have a specific requirement for PSUs in Telecom Equipment connecting to their DC pwr systems within exchanges... BTNR 2511 : This is a procurement std. I hope you find this a good starting place for your designs. Best regards, Edward Fitzgerald (International Approvals Consultancy) European Technology Services - UK GSM : +44-4685-33-100 Internet : [email protected] X.400 : G=Edward; S=Fitzgerald; A=400net; P=itu; C=ch > > From: IN%"[email protected]" 28-JUN-1996 11:01:17.24 > To: IN%"[email protected]" > Subj: 60 VDC Systems > > Date: Fri, 28 Jun 1996 10:43:10 -0500 > From: [email protected] (John Trovato) > Subject: 60 VDC Systems > Sender: [email protected] > X-Sender: trovato@pop > To: [email protected] > > Does anyone have experience in designing systems that operate off of > 60VDC CO batteries? I am specifically interested in isolation > requirements, standards that define dc powered co equipment, circuit > definition (SELV,TNV, Haz Volt.) and the countries which utilize 60vdc. > > Regards, > > John >
