Oldfieldguy,
Being with the other company with the same initials as davidbeach's company, we are dealing with the same issues. Most of our technicians have limited power experience since most of their work involves instrumentation, PLCs, battery system, valve actuators, regulators and all of...
Fargo and Asbury are place names. The instructions are to tie into an existing ground loop. Fargo & Asbury could be street names, buildings, vaults, etc.
We are not ignoring the issue. The reason I brought up the subject is that we are installing new metering, pressure limiting and regulating stations on existing pipelines that have active cathodic protection. Most of the older stations used zinc beds. As new electrical power is brought in for...
We have many miles of gas transmission and distribution pipelines that share right of ways with electrical T&D lines. My concern is with induced currents on the pipelines caused by faults on the electrical lines and specifically, the shock hazards that personnel could be exposed to at...
jwparker, I am reviewing a design by a Canadian vendor for installation in the US and trying to determine if they were following Canadian standards. The engineer followed the vendor's design but we caught it in time and installed 1-3/0 per phase.
Thanks.
We have an 8000 HP Ross Hill 12 pulse drive at one of our sites and recorded the attached waveform at a 120 volt receptacle. There is a 1000 kVA xfmr stepping down to 480 volt and a 30 kVA stepping down to 120/208 volt before the receptacle. With the thyristor front-end, notching is expected...
I want to preface my remarks by saying that I am no expert in pumping system but I have designed a few complex control schemes. This is strictly my own opinion of the situation.
Assuming that all 3 pumps have similar pump curves and problems of stability can be overcome, the closest pump will...
