

Packaged Transformer Substations (PTS)
A Packaged Transformer Substation from Radiy is an ideal solution for industrial facilities.
A packaged transformer substation (PTS) is designed for the reception, transformation, and distribution of three-phase alternating current electrical power at 6–10 kV and 50 Hz, with capacities ranging from 63 kVA to 3000 kVA, to supply the auxiliary needs of nuclear, thermal, and hydroelectric power plants, as well as other electrical consumers.
Radiy Transformer Substation: Advantages for the Customer
Stable
Power Supply
The packaged transformer substation (PTS) enables efficient transformation and distribution of electrical energy in accordance with the needs of a specific enterprise, preventing interruptions in the operation of production equipment.
Protection Against
Overloads and Emergency Situations
Built-in protection mechanisms prevent short circuits, overvoltage, and other faults that may lead to equipment malfunctions and pose a danger to personnel.
Energy Efficiency and
Resource Savings
Thanks to the ability to monitor electricity consumption, enterprises can optimize costs and reduce energy losses.
Flexibility
in Use
PTS units are adapted for operation in various conditions, which makes them suitable for facilities in the heavy, chemical, metallurgical, machine-building, and power industries.
Automation
and Remote Control
Modern PTS units are equipped with monitoring and remote control systems, allowing prompt response to changes in power network parameters and prevention of emergency situations.

Control and Diagnostic System
The packaged transformer substation is equipped with a modern monitoring system for switchgear parameters, including:
- Real-time monitoring of the status of switching equipment.
- Monitoring of current consumption for the entire section as well as individual consumers.
- Remote setting of electronic trip units.
- Diagnostics of switching equipment faults.
- Monitoring of equipment service life.
- Event logging, including emergency events.
Operation and Reliability
The following factors are considered key operating conditions:
- Ambient temperature: from −40 to +50 °C.
- Relative humidity: from 5% to 100% (at +35 °C).
Key Features of Radiy's Packaged Transformer Substations
- Packaged transformer substations are manufactured in accordance with the customer’s technical specifications.
- A diagnostic system with parameter transmission via communication lines can be integrated into the PTS.
- The use of components from leading global manufacturers ensures high reliability.
- Service life: not less than 30 years.
Types of Packaged Transformer Substations
By purpose, the following types are distinguished:
- PTS for auxiliary needs – used at power plants (NPPs, TPPs, HPPs) to supply internal consumers.
- Distribution PTS – designed to supply power to consumers in industrial, commercial, and residential areas.
- Agricultural PTS – provide power for farms, livestock complexes, irrigation systems, and similar facilities.

Application of Radiy Packaged Transformer Substations for Industry
Packaged transformer substations (PTS), like control panels, play a critically important role in ensuring the stable operation of industrial equipment and energy facilities. They provide uninterrupted power supply to electrical equipment, maintain grid reliability, and ensure the safety of power distribution.
Radiy’s Experience with Packaged Transformer Substations
Radiy packaged transformer substations have been successfully tested and commissioned for industrial operation at nuclear power facilities, where increased requirements for reliability, safety, and operational performance apply.
In 2015, a two-transformer sectionalized PTS for auxiliary needs was manufactured for the expansion of the 750 kV switchyard at Zaporizhzhia NPP. The PTS was commissioned in December 2017.
In 2018, Radiy won an EBRD tender for the supply of 24 packaged transformer substations (514 cabinets) for Unit 3 of the South Ukraine NPP.
Radiy packaged transformer substations are reliable equipment for industrial applications.
Main Functions of a Packaged Transformer Substation
- Power supply to consumers in accordance with their electrical parameters.
- Protection against current overloads, single-phase and phase-to-phase short circuits in the network, ground faults, and other protection functions as required by the customer.
- Monitoring of voltage parameters of all phases of the main circuit.
- Generation of alarm signals in the event of faults or parameter deviations beyond set limits.
- Measurement and display of: line-to-line voltage on busbars, current of each phase of each feeder, power supply parameters, frequency, total harmonic distortion, and power (active, reactive, and apparent).
