ELECTRIC WAY FINLAND OY — LAIHIA 66400
HV Main Circuits – Precision Engineering (110kV–400kV)
Millimetre-precise switching expertise at the heart of the high-voltage grid (110kV–400kV). We are responsible for the technical implementation of critical electrical infrastructure.
EWF - ELECTRIC WAY FINLAND
Chief Circuit Engineer – Rare Iron on the Construction Site
Main circuit installation is not just an installation, it is the foundation of the substation's operational reliability. With high voltage, there is no margin for error – connections must withstand load, thermal expansion and time.
EWF offers the in-depth technical expertise required for 110 kV, 220 kV and 400 kV systems. We are known as the people who understand the soul of a substation, beyond the wiring diagrams and torque wrench. When it comes to the main circuits, EWF is the name professionals trust.
WHAT does our service include?
110–400 kV Main circuit connections
Critical high-voltage connections at 110–400 kV levels. We master the cleaning of connection surfaces and the correct tightening torques to ensure uninterrupted power transmission.
High voltage connections of power transformers
Connecting power transformers to the national grid. We carry out high-voltage side penetrations and circuit installations with technical precision.
Technical installation of busbars
Professional installation of pipe and cable track systems. We take into account electrical requirements and thermal expansion, ensuring seamless electrical continuity.
Installation of measuring and protection devices
Connections of instrument transformers and surge protectors. Accurate installation ensures that monitoring systems have accurate information about the network status 24/7.
Fine-tuning of circuit breakers and disconnectors
Mechanical and electrical fine-tuning of circuit breakers and disconnectors. We ensure correct response times and reliable operation of the equipment as part of the protection system.
QUALITY ASSURANCE
Technical analysis
We review the main circuit diagrams and wiring diagrams, ensuring that the installation environment is ready for technical work.
Component inspection
We ensure the cleanliness and integrity of all fittings and components before the connection phase.
Connection and installation
We perform installations in strict accordance with the manufacturer's instructions, standards, and specified tightening torques.
Documentation and handover
Every critical connection is documented. We hand over a technically verified and inspected entity.
REFERENCES
EWF acts as a credit partner
For Finland's largest energy companies
We have been involved in ensuring the security of supply of the electricity grid in numerous critical locations.
LET'S GET TO WORK!
Do you need solid expertise for main circuit installations?
When technical accuracy and on-time delivery are critical, EWF is the right partner to choose.