A review of shop drawings submittals for all major electrical equipment provides the design team and the commissioning agent with the opportunity to confirm that the manufacturers are providing the equipment as specified and that the systems meet the design intent. FAT report (If required). Some of the codes or standards that provide requirements or recommendations for commissioning include: U.S. Green Building Council LEED-rated facilities require fundamental commissioning. For electrical systems, this includes lighting, controls, daylight-harvesting controls, and any sustainable green power systems, like solar photovoltaic systems. Fundamental commissioning activities performed by the CxA include: LEED-rated facilities also offer additional credits for Enhanced Commissioning, which can provide additional points. It should be noted that enhanced commissioning is done by a third party independent of the design and construction teams. The third-party professional will: Both the IECC and ASHRAE 90.1: Energy Standard for Buildings Except Low-Rise Residential Buildings mandate the commissioning of lighting systems. ASHRAE 90.1 now requires lighting and controls functional testing, design documentation, submittals, operation manuals, complete narrative, and daylighting documentation. The functional testing can’t be performed by the design or construction team members. Participate and review in development of OPR and basis of design (BOD). Review building operation within 10 months after substantial completion. B. The ANSI/NETA ATS standard includes procedures for testing many parts of the electrical system including: While it is possible that some, or all, of these tests could be performed by the installing contractor, there is a benefit to the consulting engineer and the owner to use a third-party testing agency who can independently assess that electrical equipment complies with the engineer’s design and specification documents and has been installed to meet all codes. It is beneficial for the engineer to specify that this third-party testing firm is an accredited member with documented and verified experience and abilities to objectively validate the electrical system. It is also imperative that periodic testing and/or re-commissioning of an existing electrical system be performed to help ensure that it continues to operate per the design intent. Because the electrical system was commissioned, it operated as designed and the owner never lost power to the critical load. The purpose of this procedure is to define the step by step method to implement the correct practices for the precommissioning & commissioning of “Lighting Control System”through the guidelines contained herein so as to ensure that the job execution complies with the project requirements and serves the intended function to satisfactory level. However, consulting engineers may wish to specify additional “factory witness testing.” This additional witness testing permits the consulting engineer to perform preinstallation inspection of the equipment and request simulated functional testing performed by the manufacturer. Often, witness testing is only required for large or complicated electrical equipment and for mission critical projects. Witness inspections can include confirmation of equipment dimensions and weights, proper nameplates and labels, locations and sizes of conduit openings, communication wiring points, and cable lug configurations. Functional witness testing may include simulated sequences of operations, such as start-ups and load transfers, fault conditions, load loss, and alarms and display information. Figure 2: Contractors are preparing to perform partial discharges testing on underground medium-voltage cables to verify insulation integrity. In this phase, the commissioning scope and budget for the project are determined, and a preliminary commissioning plan is developed identifying the role of the commissioning agent. Rectify by checking the device continuity for short circuit if the required continuity is not achieved. Learn why testing and commissioning enhances building performance,and understand the benefits of third-party involvement. 3. Courtesy: SmithGroup. 4. Commissioning procedures and checklists were written. Motor nameplate details (Rated voltage, full load current, and rated RPM). The commissioning agent also may be responsible for overseeing the factory testing, confirming that the results meet the acceptance criteria, and documenting any deficiencies. The month after the facility was fully commissioned, the owner started a worldwide migration to the new facility. During this integrated system test, the mechanical, control, and life safety systems should be incorporated to evaluate the true operation of the facility’s combined systems. Search Products And Discover New Innovations In Your Industry!! The electrical system reacted properly and transferred the critical load to the redundant standby power system. In the second step they would be tested as a system to verify their compatibility under load and various operating conditions, such as on generator power, where harmonics can sometimes be an issue. It also discusses field testing of all the major components of an electrical system such as motors, generators, switchgear, protection and control, UPS and battery systems. Courtesy: SmithGroup. Critical facilities like data centers, call centers, and hospitals have more complex electrical distribution, standby, or emergency generation and other backup systems than a standard office facility, and therefore will require a more comprehensive commissioning scope. Motors including drives and controllers. Electrical monitoring systems are making even greater strides with leading-edge systems that are “aware” of occupant use and traffic, adjusting light levels to constant illumination levels and energy use. This is important, as CxAs should  be involved in the early development of the OPR, specification development, and reviews of design documents against owner’s requirements. The consulting engineer can request the owner hire a contractor to perform tests according to NETA MTS to verify the condition of the switchgear prior to new work. Witness at least a portion of the electrical system’s functional testing. Beyond testing individual electrical equipment components, there is a need to verify that installed electrical systems match design documents, construction submittals, and owner’s project requirements (OPR), and to document functional performance testing. Electrical commissioning may be optional or required depending on the code or certifications required by the project. Common challenges for the busy engineer and budget-constrained owner is the time and cost for the travel to the factory—and deciding who from the team should attend. Depending on the awarded manufacturer, the factory may even be located outside of the country where the engineer or project resides. In these cases, the option of “virtual factory witness testing” is a possibility using video conferencing. This allows engineers, owners, and contractors to participate remotely in witness testing and preinstallation inspections. Introduction: The safe and efficient operation of modern electrical equipment and control systems requires the successful testing, start-up and commissioning of this equipment, or system, to ensure correct operation, plus; Electrical Systems 1.0%-1.5% of electrical system cost Energy Efficiency Measures $0.23-$0.28 per square foot * Displays the individual average costs associated with Commissioning various scopes and systems with respect to the entire construction cost, system cost, or square footage. Commissioning of the Electrical Systems are an integral part of this Section. Power cables generate heat, and heat affects resistivity and current-carrying capacity. Develop or approve a monitoring-based commissioning plan. Information also is critical for future renovations and expansions, as consulting engineers can determine the ability to add new loads to existing systems. Maintaining, testing, and inspection a proper grounding system for the electrical power substation; What are the Goals? Factory testing provides the design team and commissioning agent with an opportunity to inspect and test the functional operation of the equipment before it arrives on-site. Load banks may be permanently installed or configured for temporary rental unit for regular testing. Knowledge of and experience with the operation of the electrical equipment. Electrical systems that meet the operational needs of the owner, Reduced downtime due to power outages caused by utility loss and/or failures within the electrical system, Coordinated electrical systems that balance protection with reliability and meet the recent code requirements and standards for critical facilities, Confidence that the electrical systems will operate correctly when required. For example, phased construction may require additional load bank connections and/or isolation breakers to allow for testing without affecting those portions of the facility already online. It does not include infrared scanning, power quality, switchgear, transformer, or low voltage system testing. 5. 1. Smaller facilities may not have any discrete systems. T&C Technology LLC offers a unique Hands on, Witnessing, Supervision, Verification and Commissioning Management for Electrical Systems including, but not limited to, Continuity Test, Polarity Test, Insulation Test, Live and Dead Test (Hot and Cold Test), Dielectric Test, Earth leakage test, Earth fault loop impedance test, RCD test, Primary & Secondary Injection test, Voltage, … By Brian Rener, PE, LEED AP, SmithGroup, Chicago March 14, 2019 Figure 3: Parallelling generators on switchgear requires careful testing and simulation of possible operating scenarios to confirm control sequences. Once the new primary systems were installed, they had to be tested and commissioned around a live data center. Load balancing is another electrical test that is specified by consulting engineers. In this phase, the commissioning procedures and acceptance criteria are outlined, and the contractor and manufacturer’s expectations are identified. Develop or approve system’s manual updates and delivery. It is important for those performing commissioning (commissioning agents, or CxA) to be involved in this phase so that they can understand the design objective and operational intent of the facility. Because the commissioning agent was involved in the pre-design discussions, he was aware of the owner’s expectations. • prestartup testing: All testing required prior to rotating the generating unit under power (hydraulic or electrical) which is unique to the unit and not associated with system testing. However, the origin of this number is unknown. The most common electrical integrated system test is a simulated site-wide power outage, also known as the “black start” test. This phase can be broken down into three steps for commissioning: Finalizing the on-site commissioning plan. Electric Power Systems is a NETA Certified, Independent Electrical Testing & Engineering Organization. Commonly in pre-energized new installs, PD involves the use of very low-frequency voltage, which is raised to a minimal level at which partial discharges would appear in insulation weakness, and sensors measure where this takes place. PD testing also has the benefit of being used on new, old, and live cables. Many share a common perception that commissioning is the final stage of a project, performed when a facility is complete or nearly complete. All of these problems were corrected and retested until the system operated per the design intent. The commissioning agent’s role in the design phase is to review and comment on the construction documents to verify that the goals and requirements set forth in the pre-design are being met. Design review prior to 50% construction documents. In addition to below precise method of statement, you can find many electrical and ELV system testing and commissioning method … The owner’s pre-design requirement was for a data center facility that had a concurrently maintainable infrastructure with fault-tolerant critical systems. Fire Alarm System Commissioning Activities I) Testing Procedure A) Continuity: Check the loop in and loop out continuity. Report findings directly to the owner throughout the process. Determining how a system will be constructed and commissioned/tested is important during this phase because it may have an impact on how the distribution system is designed. In the pre-design phase, the owner’s requirements and expectations for the facility are defined. Figure 4: Infrared testing on a panel board will identify issues in terminations, connection, and overloading that result in excess heat. Figure 1: Testing agents are shown communicating with remote chiller operations during commissioning of new medium-voltage switchgear to verify proper operations. The most common tests are functional tests and demonstrations for the owner and staff. GSEE01) Edition: 2007: Not Available For Sale: E-version:(PDF/2234 KB) More sophisticated power-quality monitoring can help owners avoid damage to equipment or to identify sources of poor power quality either inside the facility or from the utility. Common alarms from various systems can be collected and presented for instant remote decision-making and action plans. The following items shall be check without fail prior to energise the system: All pre commissioning tests are conducted for all equipments A visual check at CT (current transformer)circuits, not to be kept open. The data center commissioning process is commonly expressed in levels. Today we have numerous requirements and optional recommended practices for testing and commissioning electrical systems. Circuit breakers, relays, and switches of various types. Verify the delivery and effectiveness of operator and occupant training. Clamp meter. Field instrument … ), as well as converter stations. The commissioning scope will be dictated by the type and size of the facility. In the past, the primary focus of commissioning has been on HVAC systems, but because of the need for increased electrical system reliability and complexity, owners are now starting to realize the importance and benefits of commissioning on-site electrical systems. The commissioning agent (CxA) or commissioning provider (CxP) is a critical part of the design and construction team and should be engaged early in the design and construction process. The operational phase was split into multiple sections because of the phased construction. Figure 3: Parallelling generators on switchgear requires careful testing and simulation of possible operating scenarios to confirm control sequences. Commissioning of the HVAC system includes all systems, including fire, life, safety and controls. It is the responsibility of the commissioning agent to confirm that the factory testing procedures are adequate or develop additional testing procedures to ensure that the equipment operates as required to meet the design intent. We specialize in commissioning, start up, and maintenance testing for Utility, Industrial, Transit, Data Centers, and Commercial Facilities. All wiring system shall be tested for continuity of circuits, short …