Electrical installations. From design to long-term operation.

01 / DATPOL

Survey, concept and electrical design

We start with how the site operates, planned expansion and critical loads. Electrical design considers automation, ventilation, IT and fire safety interfaces. Responsibilities and the required design documentation are agreed before installation begins.

• Survey, drawing review and identification of the TN, TT or IT earthing arrangement.
• Load schedules, diversity, starting currents and capacity for future expansion.
• Fault calculations, cable sizing, voltage drop and protective device coordination.
• Cable routes, fire compartments, maintenance access, environmental conditions and approvals.
• Design by professionals holding the required Polish construction qualifications where applicable; agreement on statutory procedures.

02 / DATPOL

Installations for factories, offices, warehouses and public buildings

We install new systems and alter existing circuits around the process, operating hours and site access. The agreed scope may cover a complete installation or a defined stage of an upgrade.

• Main and submain distribution, socket circuits, fixed equipment and process loads.
• Supplies for production workstations, kitchens, pumps, ventilation, refrigeration and IT.
• Offices, hotels, retail premises, public buildings and technical facilities.
• External cabling and supplies for gates, car parks and outdoor equipment.
• Circuit identification, organised routes, distribution board schedules and as-built records.

03 / DATPOL

Switchboards, distribution boards and power distribution

An assembly must be assessed as a complete system. Enclosures, devices and connections are selected for loading, fault conditions, temperature and intended operation. Alterations require an assessment of their effect on the original assembly.

• Main, floor and process distribution boards, including essential power circuits.
• IP/IK ratings, spare space, ventilation and operating access.
• Selectivity, breaking capacity, surge protection and electrical monitoring.
• Design verification and routine verification under the applicable parts of PN-EN IEC 61439.
• Single-line diagrams, device schedules, identification, instructions and applicable assembly documentation.

04 / DATPOL

Protection against electric shock and protective device selection

Protection is selected for the earthing arrangement, prospective fault currents and load characteristics. Drives, chargers and UPS systems require consideration of current waveforms and manufacturer instructions. Installing an RCD alone does not demonstrate effective protection.

• Basic protection, fault protection and additional protection where required.
• RCD/RCBO, overcurrent protection and isolation selected for the circuit.
• Protective conductor continuity, bonding and automatic disconnection conditions.
• SPD coordination with lightning protection and equipment withstand levels.
• Assessment of PEN separation, legacy two-wire circuits and staged upgrade options.

05 / DATPOL

Cable routes, fire stopping and installation quality

Routing affects current-carrying capacity, maintainability and fire performance. We coordinate with other building services and establish cable and support requirements.

• Cable trays, ladders, conduits and busbar trunking selected for the environment and loading.
• Cable grouping, ambient temperature, mechanical loads and electromagnetic compatibility.
• Cable reaction-to-fire performance and product documentation appropriate to the application and applicable rules.
• Fire-stopped compartment penetrations using complete, appropriately classified systems.
• Safety circuits: operating duration, supply arrangements and supports established in the design.

06 / DATPOL

Normal lighting, emergency lighting and controls

Lighting design addresses working conditions and use rather than luminaire wattage alone. Visual comfort is considered alongside maintenance, cleaning and zone controls.

• Factories, workstations, offices, circulation routes and outdoor areas.
• Illuminance, uniformity, glare, colour rendering and task-specific requirements.
• LED upgrades with agreed calculations and measurements.
• DALI control, schedules, occupancy sensing and daylight use.
• Emergency and escape lighting, monitoring panels and central batteries within a separately designed scope.

07 / DATPOL

UPS, generators and automatic transfer — continuity of supply

We establish which loads can wait for a generator to start and which require uninterrupted support. Autonomy and transfer arrangements follow process needs and actual loads.

• Identification of critical, priority and interruptible loads.
• UPS, generator, maintenance bypass and automatic transfer selection.
• Starting currents, overloads, earthing and protection under standby supply.
• Interlocks preventing unintended energisation of the network or an isolated circuit.
• Supply failure and restoration tests, load tests and agreed operating procedures.

Explore industrial backup power and generator hire

08 / DATPOL

Machine supplies and automation interfaces

When moving a production line or adding machinery, we assess the supply installation and manufacturer requirements. The boundary between building services, machine equipment and safety functions is explicitly agreed.

• Supplies for motors, drives, pumps, compressors and process equipment.
• Maintenance isolation, status indication and agreed signal interfaces.
• Interference, screening, protective conductors and reactive power compensation.
• PN-EN 60204-1 requirements where work covers electrical equipment of machinery.
• Changes to safety functions and machinery conformity assessment as a separately defined responsibility.

09 / DATPOL

Submetering, energy monitoring and DATPOL Control

Metering identifies where costs arise and helps verify upgrade results. We define measurement points for buildings, tenants, production lines or groups of loads, together with clear access rules.

• Energy meters, network analysers, instrument transformers and device communications.
• Consumption history, peak demand, reactive energy, imbalance and agreed power quality analysis.
• DATPOL Control integration for available data: charts, alerts, reports and assigned-site views.
• Interfaces to automation and metering solutions agreed before implementation.
• Billing requires assessment of metrological rules and meter suitability; a portal reading alone does not constitute a billing system.

10 / DATPOL

Solar PV, battery storage and electric vehicle charging

New sources and loads change installation operating conditions. We assess available capacity, connection arrangements, protection, fire safety interfaces and effects on the rest of the site.

• Agreed AC/DC installation work and infrastructure for PV and battery storage.
• Assessment of island operation, source transfer and prevention of unintended energisation.
• EV charging circuits, load management and device-specific protection.
• Network operator requirements and applicable connection procedures.
• Technical supervision and fire safety approval obligations assessed for the specific installation.

11 / DATPOL

Sites requiring specialist design

Operating conditions may require additional protection and specialist approvals. We establish these requirements before pricing rather than applying a standard office solution.

• Cold stores, wet locations, wash facilities, agricultural premises and corrosive environments.
• Medical locations: classification and applicable PN-HD 60364 part 7-710 requirements.
• Explosive atmospheres: zone documentation, Ex selection and applicable PN-EN IEC 60079 parts.
• Construction sites, temporary premises and outdoor installations.
• Server rooms and infrastructure with agreed redundancy and access control.

12 / DATPOL

Electrical and fire safety coordination

Electrical work is coordinated with the fire safety design and cause-and-effect arrangements. Isolation must account for alternative sources and equipment required to operate during a fire.

• Fire emergency power isolation as an actuation, switching and indication system suited to the site.
• Interfaces with PV, UPS, generators, storage and automatic transfer.
• Supplies to fire safety equipment with appropriate cable routes and supports.
• Fire alarm and technical monitoring interfaces established by the design.
• Functional testing, status confirmations and documented results.

13 / DATPOL

Upgrading an operating site

Work is planned around permitted outages, access and process risks. Downtime reduction is assessed after surveying the installation; not every change can be carried out without isolation.

• Circuit survey and identification of critical load supplies.
• Staged schedule, outage windows and temporary power where appropriate.
• Isolation, prevention of reconnection and proving dead procedures.
• Post-alteration circuit verification and an agreed return-to-service plan.
• Updates to drawings, labels and instructions after each stage.

14 / DATPOL

Initial verification, diagnostics and test reports

Handover includes inspection and tests appropriate to the installation. Results include an assessment, scope and limitations, with records identifying the tested circuit and relevant conditions.

• Protective conductor and bonding continuity, and insulation resistance.
• Automatic disconnection and RCD operation checks appropriate to the system.
• Earthing, polarity, phase sequence and required functional tests.
• Lighting measurements, power quality analysis and thermal imaging as additional scopes.
• Reports identifying circuits, instruments, personnel, results, assessment criteria and defects.

15 / DATPOL

Periodic inspections and ongoing maintenance

Polish Construction Law requires electrical and lightning protection installations to be inspected at least every five years within the scope of Article 62(1)(2). This includes connections, equipment, protective measures, insulation and earthing. It is not a universal interval for every maintenance activity.

• Shorter intervals consider environment, condition, instructions and risk assessment.
• Additional checks after faults, flooding, fire or alterations depend on the circumstances.
• Defect register, repair priorities and recommendations for continued use.
• Records for the property manager and agreed assistance with required building log entries.
• DATPOL CARE: inspection schedules, maintenance plans and contractual response arrangements.

16 / DATPOL

What is included at handover?

Documentation forms part of the agreed scope. Before quotation, we establish what will be created, what must be updated and which information must be supplied by the client or equipment manufacturer.

• As-built drawings, distribution board schedules and circuit lists.
• Inspection, measurement and agreed functional test reports.
• Equipment documentation, declarations and applicable product instructions.
• Defects, limitations, recommendations and follow-up dates.
• Operator briefing, safe isolation arrangements and agreed configuration handover.

17 / DATPOL

Qualifications, responsibility and work organisation

Personnel and working arrangements are matched to the task. Polish operation or supervision qualification certificates do not replace construction qualifications required for regulated professional functions.

• Verification of equipment groups, voltage ranges and authorised activities, including inspection and testing.
• Article 62 inspections by persons authorised under Polish law, including appropriate supervision qualifications for electrical inspections.
• Clear responsibilities for the client, designer, installer, assembly manufacturer and maintenance team.
• Operating instructions, worksite preparation and work authorisation arrangements.
• Live working requires separate procedures and qualifications and is not the default method.

LEGAL FRAMEWORK / POLAND

Requirements are assessed for the specific project.

Before design, we establish the type of work, building use, existing condition and statutory procedures. New construction, alterations, repairs and changes of use may have different requirements. Approvals, notifications or permits depend on the project classification.

• Prawo budowlane — the Polish Construction Law: duties in construction, maintenance and inspections, particularly Articles 5, 61 and 62.
• GUNB — official guidance on periodic inspections and owner or manager responsibilities.
• Previous building technical conditions — including electrical installations and safety supplies, subject to the transitional provisions above.
• Qualifications for operating equipment, installations and networks — operation, supervision and inspection or testing activities.

The scope also considers fire safety, occupational safety for electrical equipment, manufacturer instructions, network operator conditions and product documentation. Applicable legislation and standards are established for the scope and delivery date.

This English version describes services and regulatory requirements for projects in Poland. It does not establish compliance with UK regulations or BS 7671.

TECHNICAL PRACTICE

Standards selected for the work and its documentation.

Polish Standards are generally voluntary. Legal, design and contractual requirements and the chosen means of demonstrating conformity must be assessed separately. A new edition does not by itself require every existing installation to be rebuilt. PKN explanation

This is an indicative selection, not an exhaustive list. PV, vehicle charging, medical locations, machinery and explosive atmospheres need additional applicable parts and documents. Before design, we check PKN edition status, amendments, corrections, transition periods and dated references in the project documents. Full standards are licensed documents; this overview does not replace them.

Frequently asked questions before commissioning work