Summary Highlights
- Periodic inspection of Bursa grounding installation; It covers protection grounding, operational grounding, lightning protection (lightning rod) grounding and visual inspection of equipotential installation, grounding resistance measurement, grounding continuity test and, when necessary, grounding test (grounding performance tests).
- Electrical grounding measurement and grounding test; It is carried out in accordance with the Grounding in Electrical Installations Regulation and relevant TS EN standards in terms of grounding resistance, soil specific resistance (Wenner method), grounding continuity, step-touch voltage and whether the fault current flows safely to the ground according to the TN/TT/IT structure of the system.
- Within the scope of Bursa grounding periodic inspection service; Panel and machine body groundings, switchyards and transformer centers, lightning rod grounding, internal installation grounding bars and equipotential bars are evaluated holistically; Periodic inspection of protection grounding and periodic inspection of operating grounding are handled in the same report set, and deficiencies that can be considered serious defects are specifically marked.
- Grounding measurement report, grounding compliance report and grounding installation periodic inspection report; It is prepared together with the resistance values of the measurement points, the comparison of the grounding resistance measurement results with the limit values, the risk levels of non-conformities, the corrective-preventive actions to be taken and the periodic inspection form structure in accordance with the legislation.
- Periodic grounding controls in OIZs and industrial zones in Bursa (Nilüfer OIZ, DOSAB, Hasanağa, Kayapa, Kestel, Gürsu, İnegöl OIZ, etc.); "Grounding periodic inspection period" is planned at least once a year in accordance with the provisions of the regulation, grounding measurement periods are monitored and reporting is made in accordance with the Equipmentnet / OHS-KATIP documentation.
- By planning grounding periodic inspection, electrical internal installation periodic inspection, lightning rod tests, thermal camera measurements and MV/HV operation-transformer maintenance tests together; We offer an integrated, legislation-compliant and cost-effective solution for periodic inspections of electrical installations and grounding installations.
Service Details
Periodic inspection of grounding installation; It is the process of periodically measuring and inspecting the protection grounding, operational grounding, lightning protection (lightning rod) grounding and equipotential installation of a facility. In businesses in Bursa, this process is often expressed as "grounding periodic inspection", "grounding installation periodic inspection", "grounding measurement", "grounding test" or "grounding report". But the common goal of all of them is; To verify the effectiveness and continuity of the grounding system to reduce the risk of electric shock, arc explosion and fire.
It should not be forgotten that periodic inspection and periodic maintenance are different concepts. Periodic inspection of grounding installation; It is an official periodic inspection that certifies the compliance of grounding with the legislation through independent measurements, tests and visual controls. Periodic maintenance covers interventions such as connection tightening, corrosion cleaning, conductor renewal and does not replace the grounding installation periodic inspection report. What is requested during the inspection of the labor inspector, insurance company or certification body; It is a periodic inspection report issued by an authorized engineer or an accredited type A inspection organization.
Legal basis of grounding periodic inspection; It is the Occupational Health and Safety Law No. 6331 and the "Regulation on Health and Safety Conditions in the Use of Work Equipment" dated 25.04.2013 and numbered 28628, published pursuant to this law. This text in the field; It is referred to as "periodic inspection regulation of work equipment", "periodic inspection of electrical grounding regulation", "periodical control of grounding period" or simply "grounding regulation". In addition, the Grounding Regulation in Electrical Installations, EMO Grounding Regulation and relevant TS EN standards; Defines grounding resistance limit values, measurement methods, soil specific resistance measurement and report format.
Grounding installation; It includes main grounding busbar (ATB), basic grounding, ring grounders, local ground electrodes, internal electrical installation grounding bars, panel and machine body grounding, lightning rod grounding and equipotential connections. Metal bodies of all electrical machines and equipment in factories in Bursa, production facilities in OIZs, logistics warehouses, shopping malls, hospitals, hotels and office buildings must be connected to a suitable protective grounding. Periodic grounding checks verify whether this whole operates as an uninterrupted, low impedance and safe system.
Periodic grounding control in the field is usually carried out in three steps: preliminary preparation and survey, visual inspection and electrical measurements. During the discovery phase, the grounding installation diagram is drawn; It is determined which panel, which machine, which lightning rod is connected to which grounding device or main grounding bar. At this stage, previously issued grounding measurement reports, electrical internal installation conformity reports, projects and soil specific resistance measurement report, if any, are examined; Measurement points, test methods to be used and grounding periodic inspection form details are clarified.
During the visual inspection phase; Cross-sections of grounding conductors, terminal connections, corrosion and mechanical damage, cable and busbar routes, arrangement of ATB and equipotential busbars, lightning rod down conductors and connection points, panel body grounding connections, labeling and warning signs are checked. In periodic inspection of protection grounding; Grounding continuity of machine bodies and panels, coordination with residual current relays (RCD) and suitability of thermal-magnetic protection elements are evaluated. Corrosion, loose connection, broken conductor, wrong cross-section selection or non-standard connections are stated as serious defects in the report.
During the electrical measurement and testing phase; grounding resistance measurement (methods such as 3-point method, 62% rule, measurement with a clamp meter), grounding continuity test, step and touch voltage evaluations, soil specific resistance measurement (Wenner method) and, when necessary, grounding performance tests with the SELVAZ method are applied in switchyards. Thus, not only the size of the grounding resistance is analyzed, but also whether it can safely transmit the fault current that may pass through it to the ground in the event of a fault.
Grounding measurement results; It is evaluated by taking into account the Groundings in Electrical Installations Regulation, relevant standards (e.g. TS EN 62305, TS EN 60364-4-41 etc.) and distribution company/distribution company practices. Permissible limit values and safety criteria may vary for different facility types (residential, commercial building, industrial facility, explosive atmosphere, hospital, etc.). For this reason, the grounding measurement report only asks “how many ohms did you get?” does not answer the question; “Is this value safe under current conditions? Will the protection mechanisms open in the required time?” It also answers your questions.
Grounding periodic inspection period is one of the most frequently asked issues in businesses. The Regulation on Health and Safety Conditions in the Use of Work Equipment generally defines the maximum control period for electrical installations and grounding installations as 1 year. For this reason, "How often are grounding measurements made?" The practical answer to the question is at least once a year for most Bursa businesses. This period should be made more frequent in facilities that are humid, corrosive, exposed to chemical effects, excessively dusty, have high mechanical vibration or contain an explosive environment (Ex zone); Risk analysis, manufacturer's recommendations and business grounding periodic inspection results should be evaluated together.
Who performs the periodic grounding control? According to the regulation; electrical grounding measurements and periodic inspection of grounding installations; It must be carried out by electrical/electrical-electronic engineers or accredited type A inspection bodies with the necessary qualifications. Measurements must be made with calibrated devices, the method used must be stated in the report, measurement dates and device calibration information must be included, and the results must be delivered as a signed, sealed periodic inspection report.
As Pow-Sys, we provide Bursa grounding periodic inspection and Bursa grounding measurement services; We offer it throughout Bursa, especially in Nilüfer OIZ, Demirtaş OIZ (DOSAB), Hasanağa, Kayapa, Kestel, Gürsu, İnegöl and surrounding OIZs. For businesses looking for "Bursa grounding measurement", "Bursa grounding report", "Bursa electricity and grounding measurements" or "Bursa grounding installation periodic inspection", we first inventory the existing grounding system and plan the measurement periods and your next periodic inspection date together.
During the grounding periodic inspection process; Starting from the main grounding bar, ring grounders, column and panel groundings, machine body groundings, operating and protection groundings and the lightning rod system are monitored end to end. The values of each measurement point are recorded and clearly shown in the grounding measurement report. For resistance values that are critically high; Technical solutions such as adding new electrodes, increasing the conductor cross-section, renewing connection points, or additional grounding projects in areas with high soil specific resistance are recommended.
Equipnet; It is an online system where periodic inspections of work equipment are monitored by the Ministry of Labor and Social Security. Whether or not your grounding installation periodic inspection reports will be entered into Fikirnet should be evaluated according to the equipment type and current legislation. Your occupational safety expert assigned through İSG-KATIP; Uses grounding periodic inspection reports when preparing risk assessment, annual work plan, emergency plan and explosion protection document. We also present our reports; We configure it to provide input to your Fikirnet and OHS-KATIP processes.
Bursa grounding periodic inspection prices; The size of your facility, grounding point and number of measurements, number of lightning rods, whether it is a switchyard/transformer center or not, additional tests to be performed (soil specific resistance measurement, SELVAZ test, thermal camera shooting, etc.), requested report language and delivery time are determined by location. After preliminary discovery or project review, we offer clear pricing and, if you wish, alternative bid scenarios for different scopes.
Whenever possible, we organize our Bursa grounding installation periodic inspection service in an annual contractual structure, rather than a one-time contract. Thus, your grounding measurement history is kept, point-based trends can be monitored, and you can more systematically manage the improvement steps that need to be completed until the next periodic inspection date. This model; It turns the safety of the grounding system, periodic inspections of your electrical and grounding installations, and your occupational health and safety management into a sustainable whole.
Frequently Asked Questions
What is the periodic inspection of grounding installation? What does the grounding periodic inspection cover?
Periodic inspection of grounding installation; It is the technical inspection of the protection grounding, operational grounding, lightning protection (lightning rod) grounding and equipotential installation of a facility at regular intervals. In grounding periodic inspection; grounding resistance measurement, grounding continuity tests, soil specific resistance measurement, step-touch voltage evaluations, if necessary, switchyard grounding performance tests and visual controls are performed with the SELVAZ method. Aim; It is to certify that you have a grounding system that complies with regulations and standards to minimize the risk of electric shock and fire.
What is the grounding periodic inspection period? How often should grounding measurements be made?
The grounding periodic inspection period is generally defined as 1 year for electrical installations and grounding installations in the Regulation on Health and Safety Conditions in the Use of Work Equipment. For this reason, it is considered a legal obligation to carry out grounding measurements and periodic inspection of grounding installations in workplaces at least once a year. In businesses that are humid, exposed to chemical effects, contain explosive atmospheres or have heavy industrial conditions; More frequent periods should be preferred, taking into account risk analysis, manufacturer's instructions and operation grounding periodic inspection results.
What is grounding measurement? How to measure grounding resistance?
Grounding measurement; It is the measurement of the resistance encountered by the electric current flowing to the ground through a grounding device, that is, the grounding resistance. Generally, measurements are made using the 3-point method and the 62% rule with a soil megger (ground measuring device); In some cases, grounding measurement and grounding continuity testing can be done with a current clamp (clamp meter) without breaking the circuit. In measurement; Test current is applied to the grounder and the resulting voltage drop is measured and grounding resistance is calculated using Ohm's law. The obtained value is compared with the limits specified in the Grounding Regulation in Electrical Installations and relevant standards.
How many ohms should the grounding measurement value be?
There is no single fixed limit value for earthing resistance; The maximum allowable value may vary depending on the type of facility, voltage level, grounding scheme, whether the system is TN/TT/IT, the magnitude of the fault current and the characteristics of the protection devices (fuse, breaker, leakage current relay, etc.). While a level of 1–2 Ω is targeted in some facilities, in some cases higher values may be accepted according to regulations, project specifications and distribution company criteria. The important thing is to obtain a grounding resistance that will allow a sufficient fault current to flow in the event of a fault and enable the protection devices to open in a safe time.
Who performs the periodic grounding control? Who is authorized?
Periodic inspection of grounding installation and grounding measurements; It must be carried out by electrical/electrical-electronic engineers or accredited Type A inspection bodies who have the qualifications specified in the Regulation on Health and Safety Conditions in the Use of Work Equipment. Persons and organizations performing grounding measurements; He/she must be knowledgeable about the Grounding Regulation in Electrical Installations, relevant TS EN standards and correct measurement methods, use up-to-date test equipment for calibration, and prepare the results into a signed grounding measurement report and grounding compliance report that will be accepted in official inspections.
What measurements and tests are performed during the periodic grounding control?
Within the scope of grounding periodic inspection; grounding resistance measurement (3-point method, measurement with a clamp meter, etc.), grounding continuity tests, soil specific resistance measurement (Wenner method), step and touch voltage evaluations, panel and machine body grounding control, internal installation grounding bars and equipotential connections are tested. In facilities with a substation or switchyard, switchyard grounding performance tests can also be applied using the SELVAZ method when necessary.
What are grounding measurement report and grounding compliance report?
Grounding measurement report; It is a technical report containing the results of grounding measurements, description of measurement points, device and method used, measurement date and evaluation results. The grounding compliance report is; It is a document that shows whether the grounding installation complies with the relevant regulations and standards, and is often evaluated together with the electrical internal installation conformity report. In practice, these reports; It may also be referred to as “grounding periodic inspection report”, “grounding installation periodic inspection report”, “Bursa grounding report” or simply “grounding report”.
What is the relationship between Gençliknet and İSG-KATIP and grounding periodic inspections?
Equipnet; It is an information system belonging to the Ministry of Labor and Social Security where periodic inspection information of work equipment is recorded. Which equipment and which periodic inspection reports will be entered into Equipment is determined by the documents and announcements published by the Ministry. Whether or not your grounding installation periodic inspection reports will be recorded in Equipment should be evaluated in this context. Occupational safety specialist assigned through İSG-KATIP; It uses your grounding periodic inspection reports as a basis document in the risk assessment, annual plan and emergency plans it prepares.
How are grounding periodic inspection prices determined in Bursa?
Bursa grounding periodic inspection price; It is determined according to the size of the facility, the number of grounding points to be measured, whether or not there is a lightning rod and transformer center, additional tests requested (soil specific resistance measurement, SELVAZ test, thermal camera shooting, etc.), report language and delivery time, and the location of the facility. It makes a clear pricing after the discovery or project review; We offer alternative quote packages for different scopes such as “grounding measurement and report only”, “internal electrical installation + grounding” or “HV maintenance + transformer + grounding”.
Can I get both electrical internal installation and grounding periodic inspections in Bursa?
Yes. As Pow-Sys, we can plan electrical internal installation periodic inspection, grounding installation periodic inspection, lightning rod tests and MV/HV maintenance-test services in an integrated manner in Bursa. Thus, both your internal installation and grounding system are checked at once in the same field, and your reports are collected under a single roof in compliance with Equipnet and OHS-KATIP processes. This approach; It provides significant advantages to businesses in terms of both cost and planning and allows you to manage your Bursa periodic inspection needs from a single source.