Zoned Approach to Power Quality
A Power Quality Solutions focus ensures continued performance and less maintenance on your microprocessor-based equipment.
Power Line Irregularities Happen! Problems such as surges, noise, overvoltage, brown-outs, harmonics and blackouts can, at a minimum cause data disruptions and in some cases can even cause damage to sensitive equipment. Conducting a power quality check-up on your facility and providing a power quality solution for continued performance of microprocessor type equipment using the zoned approach is explained here.
Why a Zoned Approach? A zoned power/data quality systems approach should be applied for multiple systems or problems.
Zone 1: Main Service
Zone 2: Branch Panels
Zone 3+: Point of Use
Before we begin with a general analysis, think for a minute about the solution you desire. At zone 1 where main service enters your facility you desire high energy handling. At zone 3, point of use or workstation, youre looking for a tight waveform shape to nominal sine wave.
Follow These Steps
1. Analyze your environment for its effect on electronic equipment.
Have you experienced nuisance failures, brownouts or other problems?
2. Review the mechanical integrity of all systems.
Check for proper grounding, floating grounds or multiple grounds.
Use thermal scanning equipment to locate troubled areas.
3. Identify the problem.
4. Evaluate what systems need to be protected in each zone.
Select power/data quality equipment to address the specific problems.
Zone 0: If experiencing lightning related spikes, strong RF signals, under-voltages, brownouts or blackouts, provide first level of transient control on all cables (power, voice, data) entering the building.
Zone 1: Surge voltage and currents from outside the building can appear on all conductive paths. Install hard-wired surge protection devices -- all incoming conductors, connect all system ground conductors to a common ground point, and connect all surge protection devices to the same common ground.
Zone 2: Residual spikes from service entrance and surges/noise originating within the building can be solved by providing supplemental layers of power/data quality protection in the form of surge protection devices or line conditioners.
Zone 3 thru end: Additional surges and noise surrounding point-of-use equipment can be solved by protecting distinct pieces of equipment via surge protection devices, line conditioners, isolation transformers, line/load reactors, stand-by power systems, or uninterruptible power supplies.
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