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Sundar2015... with the equipment you have, I suggest 2oo4! If you want a copy of my JSSS Paper, "Probabilistic Risk Assessment of Equipment Safety Systems", contact me at: [email protected] Regards, Phil Corso

Ak... sorry, my earlier Ref, http://www.control.com/thread/1026224380 was wrong! It should be: http://www.control.com/thread/1026225966 Phil

Valen... you're welcome! Were you able to come to an amicable agreement with your client? Phil Corso

Ak... found earlier reference: http://www.control.com/thread/1026224380 Phil

Ak... Found a second: http://www.control.com/thread/1026225830 Phil

ET12K... if you did not find a solution to your problem please contact me at: [email protected] Regards, Phil Corso

Irfan.. the term wetted-contact originated when extremely small relay contacts were used to switch minute electrical currents. They were coated with Mercury. Don't confuse them with the Mercury-pool contacts, that are contained in glass-vials. The mercury-pool has the mass to absorb the...

ET12K... Use Control.Com's "Search The Site" Box. For example, type in +Motor +Brake , and you will find over 200 threads, including several on DeWalt! Regards, Phil Corso

Irfan ... Use Control.Com's "Search The Site" Box. For example, type in +"Dry Contact" Regards, Phil Corso

Barinda... has the problem been solved? If not, I would like to propose a tried and true method. But first, answer one question: Have you observed if hunting occurs for specific load-ratios? Regards, Phil Corso

Valen... If I have correctly interpreted your query, I can present a legal argument that will illustrate why the external EGC-conductor does not have to be connected to the internal grounding-lug. Please contact me at [email protected] to discuss details. Phil

Controlcat... send your E-mail address to [email protected] Phil

Valen... pic(s) will help. Send to: [email protected] Phil

Valen, please provide some construction detail. Cable size, insulation,rubber-sheathing, metal-shield, termination-fitting, EGC size in tray, periodic bonding to EGC, etc? Phil

Valen... the grounding lug within the motor's JB, is a just a convenient means of grounding the frame when the GroundING conductor is installed with the "TEE" leads! If the conduit is a legit "GroundING" method, the the lug is superfluous! Regards, Phil Corso

Willy... 575V is not a USA Std, but it is about 5% lower than 600V, which is a Std! And, 575V is equal to the 5% tap on step-down transformers! Furthermore, Xfmr mfg's will furnish a 575V secondary when requested! I suggest that you contact one for their knowledge! There are pockets of areas...

GPK... here are the ones I found: http://www.control.com/thread/1026241251 http://www.control.com/thread/1240942296 http://www.control.com/thread/1301720340 http://www.control.com/thread/1362173773 http://www.control.com/thread/1387222204 Phil

Gpk... I suggest you search Control.com Archives, using their "Search The Site" box! Regards, Phil Corso

Naveed, first a caveat: it is essential that the protection system first determine the direction of current flow! In general, differential-protection for Power-cable and Transformer are similar when the Power-cable is relatively short (say a few hundred mts/yds)! Then, in this case, CT...

Rukevwe... I purposely omitted detail regarding the effect of paralleled alternators having dissimilar design features, winding-pitch being just one. I thought you should first deal with the most costly factor; i.e., Switch-gear Fault-Duty. The information to answer this concern is more...