Special Electrical Services

The offering involves visit of Electrical Expert and collection of switch gear & actual relay settings and electrical data using Analysers from site on various load conditions. The collected data of switchgear & protection relay settings is the facility is fed to conduct Load flow study followed by short circuit analysis & Protection Relay coordination study.

The offering involves visit of Electrical Expert and data collection from site on various load conditions of the facility. The collected data is then used to conduct Load flow study for various load conditions & then short circuit Analysis is conducted to generate report as per load.

Reality check of existing short circuit protection system. Short circuit & Fault Current ratings at HT, LT, PCC & MCC levels are calculated by the system precisely.Short circuit protection can be redesigned as per findings. Enhancement of facility uptime by ensuring fault is isolated by the nearest protection.

When a short circuit occurs in an electrical network between two live conductors, whether by direct or indirect contact, it causes a massive fault in the network. This fault will cause an electric arc, which will result in a flash, which is commonly referred to as an electric arc flash in the industry. Arc flash hazard analysis or arc flash risk assessment is the process of identifying the fault, analyzing the risk, and mitigating the hazards of arc flash in an electrical network. The Arc Flash Risk Assessment or arc flash analysis service is to protect employees from electric arc flash hazards in the industrial premises.

When an electrical discharge arcs from one piece of equipment to the ground or another piece of equipment through the air, it can cause serious injury or death. Temperatures in excess of 35,000 degrees Celsius can result in severe burns. The risk increases if workers get to work with highly energized equipment.

OSHA, NEC, IEEE-1584, and NFPA-70E guidelines must be strictly followed when conducting an arc flash study. To reduce accidents in their facilities, all industries will conduct arc flash risk assessments in order to implement proper safety methodologies prior to any loss or risk.

An arc flash hazard analysis is performed by a trained safety expert in order to determine whether an arc flash will happen or how much energy will be released. Companies can use this data to effectively train employees on the hazards associated with their job responsibilities and to identify the Personal Protective Equipment (PPE) required to keep workers safe in the event of an arc flash incident. Employers in the electric power generation, transmission, distribution, and related fields were required to complete an arc flash risk assessment as part of OSHA’s final rule for 29 CFR 1910.269 in 2014. This work is also required by NFPA 70E.

In power system networks, protection must be designed so that protective relays isolate the faulted portion of the network, preventing equipment damage and operator injury, and ensuring minimal system disruption, allowing service to the healthy portion of the network to continue.

To achieve proper fault identification and fault clearance sequence, relay coordination is used. These relays must be able to distinguish between normal operating currents and short-term overcurrents caused by normal equipment operation, such as motor starting currents, transformer inrush currents, and sustained overcurrent caused by fault conditions. Power system relaying and overcurrent protection are concepts that are mutually dependent and contribute to the plant’s smooth operation. Protection coordination or protective device coordination research will include the calculation of protection relay settings as well as power system protection and switchgear such as MCB, Fuse, ACB, VCB, and so on.

As protection is a major concern in any industry, and they rely on protective devices for the same, a relay coordination study and analysis is performed to ensure that the system’s safety operations are functioning correctly and to avoid nuisance tripping. The cause of nuisance tripping is the modification of protective devices and their settings during maintenance without appropriate study and analysis.

A coordination study’s goal is to determine the characteristics, ratings, and settings of overcurrent protective devices that will ensure that the minimum unfaulty load is interrupted when protective devices isolate a fault or overload anywhere in the system. A coordination study should be carried out.

Short-Circuit Currents are currents that introduce large amounts of destructive energy into a power system in the form of heat and magnetic force. A short circuit is also known as a fault. It is a type of current that introduces a significant amount of energy into a power system. It can take the form of either heat or magnetic force. It is a low-resistance energy path that bypasses part of a circuit and causes the bypassed part of the circuit to stop working. The reliability and safety of electric power distribution systems are dependent on an accurate and thorough understanding of the short-circuit fault currents that can exist, as well as the ability of protective devices to interrupt these currents satisfactorily.

Short circuit currents pose the most serious general hazard to power distribution system components and are the primary concern in the development and application of protection systems. Short circuit currents, fortunately, are relatively simple to calculate. The basic nature of short circuit currents can be determined by applying three or four fundamental circuit analysis concepts. These ideas will be stated and applied in a step-by-step progression.

To correctly apply equipment in accordance with NEC and ANSI standards, short-circuit calculations are required. The amount of detail required to perform these calculations varies greatly depending on the size and utility connection.

A Short Circuit study is a thorough examination, analysis, or evaluation of an electrical system to determine the magnitude of currents that can flow during an electrical fault and correlate with those values to the ratings of installations of equipment and short circuit protection devices.

It addresses short-circuit analysis activities such as design considerations for new systems, analytical studies for existing systems, and operational and model validation considerations for industrial and commercial power systems. In power systems, a short circuit protection fault study is critical.

The offering requires collecting Electrical infrastructure details and Electrical data collection using Power Quality Analysers by team of experienced Engineers. The collected data is then simulated in ETAP for conducting validation & load flow study. This service provides exact quantum of Loss with load & branch losses. Component wise loss can be identified viz. X’mer/ Cables. Solutions pertaining to correction & loss reduction can be designed & implemented to reduce losses

The offering involves Site Electrical data collection & running various simulation modules to check compliance to standards mentioned CEA 2010, Electricity Act (GOM/ GOI), IS 732, IS 3043, IS 60909, IS 62305, IEEE 1584 (2018), NFPA 70E, IEEE 519 (1992/ 2014)

Service offering provided to plants having large Internal Electrical network or having Co-generation to understand the impact of electrical disturbances on internal distribution as well as on Grid. To identify the causes of these disturbances & solutions to ensure trouble free generation & supply of power.

The study involves validation of a prepared design through ETAP software. Usually designers are not motivated to reduce overall project cost and mostly design based on assumptions provided by the users. The selection of component is based on the availability & features suggested by manufacturers rather than validation & sizing.

Through this service the design is validated for various load simulations & we are able to optimize the component sizes to enhance Electrical Safety of the design. This service can reduce Electrical infrastructure costs in a project by 20% – 30%.

This is a unique offering from SASPPL & involves detailed data collection of the distribution inclusive of cables, switch gears, relay’s & data recording using PQ Analysers by team of experienced Engineers. The collected data is then entered in Etap to Electrical generate a live electrical SLD of the facility. Documentation with precise Electrical characteristics is available for user teams & complies to EHS requirements. The live SLD can be updated as well as proposed changes can be simulated to see effects & for designing best combination. A reference Electrical Manual can be created as a reference document for EHS compliance.