Waross,
You are correct in that I am referring to Lock Washers.
melspuds,
No, this gear is not Arc Resistant gear.
Attached is a photo of the installation. It is a basic single nut and lock washer, which I will recommend re-installing with locktite!
Thanks for the...
Good Afternoon!
I'm working with a customer and their contractor mounted a strut to a piece of switchgear to guide feeder cables into a piece of switchgear, opposed to continuing the cable tray (Canada). My questions is in regard to the bolts and nuts, which are anchoring the strut to the gear...
Transformer is a 13.2kv to 480v SqrD, 3 phase transformer. We found deterioration of insulation in the coils and core. This is at one of my remote locations, therefore I'm waiting on the meter history to determine the load at the time. This transformer supplies power to a standard mixture of...
One of our transformers began to exhibit excessive vibrating and noise. We shut it down, and this is what we found (see photos). Has anyone ever experienced this before and what could be the cause...
FreddyNurk, thanks for the information and I was not aware of this as I have been in the project management side of the field and have not had too much experience in the maintenance troubleshooting end of the business. I will follow up with the onsite guys, as well as the contractor to...
VTer, that is exactly what happened, as I am slowly receiving more info because this is a remote site. The breaker tripped and the site called it a failed (@flexoprinting) breaker because it would not close when trying to reset. They replaced the breaker with a spare and the spare closed...
Attached is the only photo of the breaker that I have. The event happened back in August '14 and I've just been tasked with finding the possible root cause for the failure. All I know is that it tripped and would not reset. I'm not sure what condition it tripped under. I was not sure if...
I am new to the maintenance side of power systems and I'm trying to learn some quick steps for troubleshooting MCCB failures, i.e. square d 2000 RK1 failure. I'm trying to determine what could be the causes of this breaker failure. Any help is appreciated!
