Whether or not a Power Monitoring System is installed there is always an occasional need to perform on-the-spot power measurement to evaluate particular load parameters such as:
Local power measurements are typically required if there is a need to:
The Portable Power Monitoring Package based on PML ION 7500 meter provides all the necessary information within moments. The power monitors are typically installed in customer specified locations for a period of 1-7 days, but other arrangements are possible. When installing the power monitor power interruption is usually not required.
Power Quality is often called into question but, be it simple Power Factor correction capacitors or a complex harmonic filtering system, there is a solution to fit any budget or schedule.
PowerCore's in-house expertise along with its partners can resolve commonly experienced issues such as:
In addition, complex PQ Audits can be provided that will assess the entire facility power distribution system from the top down.
Typically, power quality is evaluated through a Power Monitoring System (if the facility has one) or a series of Power Quality Measurements are performed.
PowerCore Engineering can provide such customized PQ Solutions as:
To discover the options available to improve electrical power distribution system reliability and performance call PowerCore Engineering.
Considering load additions? Expanding or modifying power distribution systems? New construction project involving electrical systems?
PowerCore Engineering provides an extensive line-up of Professional Electrical Engineering services ranging from simple short circuit and protective coordination studies to complex power system modelling and system design. Some common wide range services for existing power systems are:
In addition, services for new power distribution systems are provided:
An Arc Flash is the result of a rapid release of energy due to an arcing fault between one phase bus bar and another, neutral or ground. The fault typically starts with something creating a path of conduction or a failure such as a breakdown in insulation.
The cause of the short normally burns away during the initial flash and the arc fault is then sustained by the establishment of a highly-conductive plasma. The massive Arc Flash energy discharge burns the bus bars, vaporizing the copper and thus causing an explosive volumetric increase, the arc blast conservatively estimated as an expansion of 40, 000 to 1.
The arc fault current is usually much less than the available bolted fault current and below the rating of circuit breakers. Unless these devices have been selected to handle the arc fault condition, they may not trip and the full force of an Arc Flash will occur. The challenge is to sense the arc fault current and shut off the supply in a timely manner before it develops into a serious Arc Flash condition.
Although OSHA does not directly state what to do concerning Arc Flash hazards, OSHA 29 CFR 1910.32 (d)(1) Based on these assessments the employer must select and require the use of appropriate personal protective equipment (PPE) for his/her employees.
The NFPA70E in the US and the Canadian CSA Z462 standard deals with the Arc Flash Hazard assessment, management, and safety procedures. Among other issues these standards deal with arc hazard categorization, appropriate PPE selection, and safe work procedure.
NFA70E offers some information on calculation of the incident energy level, but without much detail. The IEEE Std. 1584 method is typically used for precise determination of incident energy levels.
Although there are several Arc-Flash software programs that are currently available on the market, PowerCore Engineering currently uses the EDSA Paladin Power System Analysis software package for system modelling and Arc Flash calculations (see more information on AC and DC Arc Flash).
PowerCore Engineering offers services in performing Arc Flash analysis including the following:
The Arc Flash Analysis is merely a first step in implementing an Arc Flash Hazard Management Program. The results of the study shall be further utilized in steps such as: