[PSES] use of AC contactor in PV application in US/CAN

Dear Experts, Is anyone familiar if it is allowed to use a contactor instead of circuit breaker in PV application to disconnect inverter from the grid? NEC in Article 690 does not specify it precisely. What standard needs to comply this contactor? Best regards, Boštjan Glavič Safety and

[PSES] Australian EMC requirements for military equipment

All A client is looking to supply a radio spectrum monitoring and direction finding system to the Australian Army. I understand from http://www.acma.gov.au/webwr/aca_home/publications/reports/industry/manuals/emcbook.pdf that such equipment is exempt from ACMA EMC requirements and should meet

Re: [PSES] use of AC contactor in PV application in US/CAN

Clause 13.1 from UL 1741 and 690.17 from the 2011 NEC both require that disconnects consist of a manually operated switch or circuit breaker (this part of 2014 NEC has been modified). It may be a bit of a judgment call as to whether a contactor can meet the intent of these requirements. As

Re: [PSES] Australian EMC requirements for military equipment

Charlie -- I am not aware that Australia might be enforcing ACMA requirements at customs---that would be news to me. I've gotten excellent (same day) responses from ACMA by posting questions via the link on their website. Mike Sherman Product Safety and Compliance Engineer

Re: [PSES] Australian EMC requirements for military equipment

Charlie: I used to sell directly to the UK MoD and Australian Armed Forces. The sale is done by a contract with their respective government, which is typically exempt from going through customs. OTOH, you should read the contract very carefully, because they can invoke whatever they want, and

Re: [PSES] Critical Components definitions

Do not know, but in principle should be ok. The 'flagged' components in the company's document control system is typically a superset of the C/C table in safety report. The TF should probably reflect reality(red/blue pill inclusive); that is, tabulate the flagged stuff in the BoM, in addition

Re: [PSES] Critical Components definitions

Yeah, I'm already working on the critical component flag for SAP, but that's another thread, SAP does all our revision control, the doc archives are slaved off of that. I'm working with an outsource manufacturer (US based) on a product they are supplying us for integration. They are also