Here is the full list of salient features:
· continuous current rating 75 A
· 24 VDC
· Open Transition
· Marine duty
· 50°C temp ambient
· Enclosure rating IP 34 (totally enclosed, dripproof)
· Withstand rating 200 A
· “Power Available” indicator lights for each source
· Alarm signal on switch...
nbucska,
The 24 VDC load is for controls so it consists mostly of a number of relays and indicator lights. I don't think there is any inrush to speak of. The load variation would be caused by how many of the 7 systems fed from the 24 VDC panel are energized. The minimum load is about 2 A and...
I need a 24 VDC automatic transfer switch for a shipboard application. It has to switch to an alternate power source upon loss of the normal power source. I can't use a "best voltage" diode arrangement because the normal source is not necessarily the best voltage. This switchover has to...
I've already looked at a couple of IEC sites. Their history doesn't seem to go that far back. I was hoping there was someone on this forum that had some history and would know whether IEC 92-501 was replaced with IEC 60146.
Thanks, everybody, for the input. I see that nobody knows a magic fool-proof method, but it is good to know that it's not just me, and that there are methods that work. As expected, persistence is the best tool!
Hello, everyone,
I am replacing some Silicon Controlled Rectifier units that convert 600 VAC to 750 VDC for some DC propulsion motors. I would like to reference specifications for performance and testing. IEEE 45 (2002 edition) says it should comply with IEC 60146 and 61136. Somebody gave me...
I am trying to evaluate vendor components and all I can get from them is "sure, it'll do that!" For instance, I am trying to replace the field contactors for a large DC motor. Vendor says they have something better but has provided nothing but a part number. I need to know what...
I have only worked for the federal gov't, rhodie, but I know people who have worked for state gov't. About your concerns:
"lazy bums" vs. "dynamic and energetic"
- The pace depends A LOT on the position. If you are only one or two engineers of your "type"...
Anode,
I have done some research into this in the last year for several installations. I had an application where I had to change a 200 hp pump from steam driven to electric driven. Normally for shipboard use you would get a motor specified for 50 degree C temperature rise and this is...
Sorry for jumping in so late here, I just joined. Navy uses green for motor running, blue and yellow for circuit breaker open or closed.
ASTM F 1166 section 9.19 has color coding for indicator lights.
I'm looking at a picture of a ship's control console and the only red lights are alarm...
