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Steady, Reliable, Efficient, Resilient and Safe Electrical Power Distribution  

 

Our goal is to help businesses improve power distribution for operations & understanding:

 

  • Minimize down time and power outages 

  • Identify potentially faulty and dangerous equipment 

  • Develop strategic predictive and preventative maintenance programs 

  • Develop electrical safety programs and procedures 

  • Trouble-shooting 

  • Verify compliance to the electrical code 

  • Design system to support electrical requirements

  • Educate where needed

 

Distributing Electric Throughout Your Building

Protect the Power Distribution System and Lifeline to all Operations with Proactive Evaluation, Continuous Improvement and Electrical Safety Programs. 

Conducting Power System Planning, Analysis and Protection Services 

For Over 20 Years

Electrical Distribution Systems 
 

Engineering Knowledge of Power Systems as a Whole for Analysis, Planning, Design, Operation and Trouble Shooting 

Developing and Having an Updated 

One Line Diagram

The Road Map for The Buildings Electrical Elements Representing the Entire

Electrical Power Distribution System.

A Key Element for Planning,

Power Studies, Electrical Safety, Emergency Preparedness & Design.

Arc Flash Hazard Analysis, Labeling & Training

 

Arc Flash incidents are an extremely hazardous situation for any worker and needs to be considered by facilities management, building owners, design professionals and practicing electricians. 

 

The arc flash hazard analysis is only as good as a comprehensive and practiced electrical safety program including the labeling and training of employees.

 

Current Solutions has a solid resume, with thousands of completed buildings and electrical safety programs, for cities, companies, and facilities across the U.S. 

 

Have any questions, please 

 

Protective Device & Coordination

Short Circuit Analysis

Equipment Labeling

Personal Protective Equipment (PPE)

 

Short Circuit Calculations & Analysis

Fault Currents Can Injure & Cause Equipment Damage

 

Short-Circuit Currents introduce large amounts of destructive energy in the forms of heat and magnetic force into a power system.

The analysis is used to determine the magnitude of the short circuit current and compares that magnitude to the standard interrupting rating of the over current protective device.

 

The reliability and safety of the electric power distribution system depend on understanding the short circuit fault currents that may be present in the system and understanding the protective devices capability to interrupt those currents.

 

Short Circuit Analysis Advantages
 

  • Provides recommended solutions

  • Identifies problem areas in the system

  • Evaluates the application of protective devices and equipment

  • Increases the safety and reliability of the power system and related equipment

  • Reduces the risk a facility could face and help avoid catastrophic losses

Short Circuit Current Risks 

 

If improperly protected, short-circuit currents can injure or kill maintenance personnel and can damage or deteriorate equipment.

Protective Device Setting & Coordination Studies

 

As an electrical “system” each piece of the system needs to be interconnected, to perform holistically, and must have settings that coordinate the functionality.


Correct setting values can only be determined by a system study based on all the pertinent electrical characteristics of the equipment within the system.
 

Protective Device Coordination Studies for coordination and correct settings to ensure safety and to ensure that equipment is not damaged under fault conditions.

  • Event analysis

  • Isolate faults and trips

  • Evaluate fault conditions

  • A sequence of events and equipment reporting

  • Protective device/relay evaluation & coordination

  • Tabulations of the circuit breaker, fuse, and other equipment ratings versus calculated short-circuit duties and commentary

Coordination to minimize or eliminate losses, and to ensure that faults (short circuits) affect the least possible portion of the electrical distribution system.

  • Protective device time versus current coordination curves, tabulations of relay and circuit breaker trip settings, fuse selection and commentary

  • Fault-current tabulations including a definition of terms and a guide for interpretation

  • Tabulation of appropriate tap settings for relay seal-in units

  • Relay settings and configurations

  • Determine the correct protective device settings

  • SCADA

Power Quality Analysis & Studies

 

Electrical energy enters equipment in the form that will allow the system to operate properly, efficiently and minimize long-term risk to that equipment. 

 

Most computer equipment will operate within certain tolerance. 

 

Analysis can verify specific equipment tolerances, as specified by the manufacturer, and verify if the power quality is adequate for the equipment to run properly.

Troubleshooting Power Quality Problems 

 

Determining Which Category:

1) Grounding   

2) Transient  

3) Harmonics   

4) No power quality problem at all.  

There are ways to control and monitor these events via a temporary solution or to install a permanent system that will send all data to a central computer within the facility. 

 

Power Quality Studies, Metering, Monitoring and Onsite Measurements:

  • Power monitors capture voltage and current harmonic distortion and disturbances that can adversely impact electronic equipment

  • Temporary and permanent metering and monitoring of the electrical system to analyze power system disturbances and interruptions that will decrease productivity, reliability, and efficiency 

  • Testing for each floor in a building to detect harmonic issues, power quality and determine the load per floor These tests can be done over time. It can be performed in a few hours or up to a few weeks, depending on the level of data detail required. 

  • Harmonic analysis, and harmonic filter design

  • Documenting and trending system performance to increase system reliability

Harmonic Analysis

 

Harmonic Distortion Has Adverse Effects on Electrical Equipment

  • Overheating 

  • Overloading 

  • Perturbation of Sensitive Control & Electronic Equipment 

  • Capacitor Failure 

  • Communication Interference 

  • Motor Vibration

  • Low Power Factor

 

Harmonic Analysis Studies are required to ensure that problems will not be introduced into the electrical distribution system due to non-linear loads.

Harmonic Analysis Studies are a prime aid in designing and implementing corrective filter systems for harmonic effect minimization. Study considerations include harmonic effects from power factor correction capacitors, resonance condition.

 

Suggested Services:

  • Identify excessive harmonic loading and poor power factor

  • Evaluate and identify harmonic mitigating savings opportunities

  • Identify problems due to mis-operation of electronic-computer based equipment

  • Our goal is to optimize the existing electrical distribution system. This study alone is based on the calculations only. This does not include the data from the power quality report. It is recommended that you also conduct the power quality and monitoring in conjunction with this report.

Grounding Analysis

 

Protection Against Electrical Faults Through Grounding

 

Earthing / Grounding defines the electrical potential of the conductors relative to the Earth’s conductive surface.

Ground faults can destroy human life and the facilities electrical equipment, in seconds.  A well-designed ground fault protection system will ensure safety from 
over voltages, faults, and lightning and minimize damage due to the fault.  Grounding of electrical equipment serves several purposes.

 

If a fault within an electrical device connects an ungrounded supply conductor to an exposed conductive surface, anyone touching it while electrically connected to the earth will complete a circuit back to the ungrounded supply conductor and receive an electric shock.

Grounding provides stability of system voltages by providing a solid reference to earth and establishing a reference to control electrical “noise” that might interfere with the proper operation of electronic equipment.

 

Find out more about any of these topics:

 

  • Improve safety of the workers 

  • Reduce damage and maintain process continuity during a ground fault

  • Decrease voltage transients and limit damage due to arcing ground faults 

  • How and where neutrals should be bonded, adequate current sensor installation, causes of failure trips or lack of protective device trip, voltage drop, fault currents, fuse or circuit breaker protection, high impedance line-to-ground faults

  • Understand what adequate protection is required. Including: over current protection, residual-current device, ground fault circuit interrupters, surge suppressors, electromagnetic interference filters, antennas and measurement instruments

  • Updated standards to meet NEC code

Electrical Load Flow Analysis Studies

 

The Load Flow and Voltage Drop study is the most basic and commonly needed electrical study.

Load Flow Study is to help analyze the electrical system under given load conditions.  

Voltage Drop Calculations is for each bus and will indicate if equipment supply voltages are at levels which will adversely affect equipment life or performance.

Load Flow / Voltage Drop studies may cover conventional voltage drop analysis, loss analysis, power factor considerations, capacitor placement, long line charging effects, impact loading for motor starting and co-generation analysis. A base-line Load Flow / Voltage Drop study should be performed anytime major changes are made to the power distribution system.

 

Suggested Services for the Study:

  • Voltage drop studies and voltage flicker analysis

  • Power factor correction studies and corrective design

  • Evaluate electrical circuits, including loading, power factor voltage and current parameters

  • Determine adequacy of circuit to serve sensitive loads

Transient Motor Starting Analysis

 

Starting large motors can cause disturbances to the motor and other loads on other buses.  In worst cases the starting motor may stall and be unable to start the driven load.    

Motor starting studies can vary from basic voltage drop on the system to a detailed waveform presentation of motor bus voltage, motor speed and motor torque, acceleration torque, load torque, power factor, rotor and stator currents, motor slip, real, reactive, and total power.  

One of the most common side effects of starting large motors is a serious voltage dip on the buses throughout the facility.

 

This voltage dip will cause other motors to slow down.  

In severe cases other motors may reach the stall point causing a domino effect to the voltage drop. Control relays may not hold, and auxiliary equipment may be affected. In addition, the life of all motors on the system may be shortened.

 

 

Ideally a transient motor starting study should be performed to show a time/voltage waveform for the motor bus.

 

Motor starting studies should be performed prior to the ordering of large motors to help ensure the motor’s life and applications performance will be satisfactory, and the remainder of the power distribution system will not be adversely affected.

 

 

Dynamic Transient Analysis For System Stability

 

Dynamic Simulation Studies for Transient Conditions 

Parameters which are analyzed typically include – absolute or relative machine angle, machine speed, machine mechanical power, machine electrical power, machine terminal voltage, exciter field voltage, bus frequency, branch power flow (real and reactive), branch current, branch apparent resistance and reactance.

Ensure the electrical distribution system will remain stable or quickly recover from disturbances  

Faults switching, load changes, motor starting, loss of generation, loss of excitation and blocked governors.

Infrared Thermography Testing

 

Hot spots can cause a fire, explosion, or service interruption threats.  

Infrared testing scans of designated electrical equipment, to pinpoint defective components and elevated temperatures and “hot spots” within your electrical power distribution system.

 

These hot spots are typically caused by unbalanced or overloaded electrical circuits, loose electrical connections, or broken equipment and conditions are often overlooked during routine evaluations of facilities.

 

The testing report typically includes hot spot locations, data, and identified problems in a well-organized detailed report with recommendations for corrective action.