ENGINEERING & DESIGN SERVICES

Design
Grubb Engineering personnel are highly experienced in utility and industrial design. Our experience allows us to produce sound operating philosophy complemented with clear fabrication drawings and field support. The result is a cost effective and reliable product.

Computer Aided Study
Engineering services include computer aided planning and design studies of transmission and distribution facilities for utilities and industrial plants. In house software includes network fault analysis and load flow, structural analysis and sag and tension programs.

Coordination Study
A coordination study will determine protective relay settings to selectively coordinate the tripping of equipment, minimize damage for faults and protect personnel from the effects of faults. A comprehensive report contains our professional recommendations for device settings along with a copy of all graphs involved.

Predominant Kilowatt Usage Study
Electricity used for manufacturing purposes is considered non-taxable under the State of Texas, Sales and Use Tax Code 151.317. Where a single meter is used for manufacturing and commercial (taxable) purposes, a study must be performed and submitted to the utility for sales tax exemption. Grubb Engineering is able to provide this study, which is certified by a Registered Professional Engineer in the State of Texas.

Panel Design and/or Assembly
A cooperative effort of the Engineering and Technical Services Divisions provides custom products ranging from state-of-the art annunciation equipment to sophisticated relay and control panels. Each component is acceptance tested upon receipt from the vendor and completed panels are tested for proper circuitry and insulation integrity. Complete documentation of test results and reproducible drawings are supplied with each panel assembly.

Energy Management
Depending upon your utility you may be paying too much for your electricity. An evaluation of overall power consumption can be performed to determine ways to correct power factor, limit peak demands and shed load in an effort to reduce utility costs. The result will be reduced utility bills, which quickly pay back and continue to save you money for years to come.

Computer Aided Drafting
Our CAD services consist of experienced draftsmen operating on the latest versions of Microstation and Autocad software. All of our designs are produced on CAD to reduce the cost and time required to complete a project. Reproducible drawings are produced on a Hewlett Packard 450C plotter.

POWER QUALITY ANALYSIS
Grubb Engineering, Inc. (GEI) utilizes a Reliable Power Meters, RPM Omega recorder to monitor and capture the electrical parameters on a power system, including loads, voltage events, power consumption and overall power quality. Industry now recognizes power quality engineering as an important discipline. GEI is no exception. That is why we have a group of engineers that review all of the data collected by our field service technicians and make observations and recommendations. The power measurement instrument, power treatment methods, and an information base is now available to permit companies, as yours, not only to determine the level of vulnerability to power disturbances but to influence their rate of occurrence as well. The electrical utility company, or electrical supplier, has long been viewed as the major source of power disturbances. This is not generally true. Electrical problems within the facility, large switching loads (i.e. VFD’s, UPS systems, rectifiers, computer servers), and the stress placed upon the electrical system by nonlinear loads, are responsible for most power disturbances. Finding solutions for power problems is not simply desirable, it is mandatory. The economic survival of the facility depends in the reliable operation of its equipment.

The monitor can be installed and left to monitor for an extended and predetermined amount of time. The RPM has its own internal hard drive, which continuously samples data and records the information on the hard drive for later retrieval by a technician using a laptop computer. In most cases, the monitor can be setup without power interruption to the loads being monitored. Split-core current transformers are used to allow the connection to the circuit being monitored without causing loss of power to the load. After installation of the monitoring equipment, protective panels are reinstalled and all precautions are taken to leave the work area as safe as possible during monitoring.

A comprehensive report is generated for you, the customer, and a cover letter detailing points of interest is attached to allow for easier interpretation of the data reported. Assistance, by a GEI employee, is supplied in the interpretation of the data if necessary. Don’t let poor power quality keep your equipment from working efficiently, reducing your companies profitability.