Here's one for you. I am curious about the use of an MOV in parallel with a set of relay contacts as a form of arc suppresion for inductive loads. I have just discovered that the controller being used in an application is utilizing the arraingment that I have just mentioned. The MOVs are...
Just a friendly note to bring any further comments back on track with the original question. The application does not involve transfer switches. It is a small DG with a synchronous generator being paralleled to the utility using an Electrically held contactor. The genset manufacterer is...
Speaking from experience the Russelectric ATS is NOT a contactor type device. It is a mechanically held switch and utilized a motor operator. If anything the Russ switch resembles a Breaker more than a contactor. Asco and Zenith both at one time tried modified motor contactors as did even...
Thank You all for your responses. I honestly don't expect to end up with a documented reference to using a circuit breaker over the contactor for I have done quite an exhaustive search on the subject.
I do welcome any opinions or experiences that you could share on the subject though as I...
This requirement is to limit transient overvoltages (caused by generators interconnected to a utility's system) during fault conditions which could damage the utility's and/or your own equipment. For a more specific and detailed description you need to refer to IEEE C62.92.2-1989 (Guide for the...
I am involved in an application where a synchronous generator is being paralleled to the utility across an electrically held contactor. A manual circuit breaker is being used upstream of this contactor to provide overcurrent protection and fault clearing. In all of my experience I have never...
