Ganja Switchyard serves regional power transmission and distribution in Ganja, Azerbaijan’s second-largest city. Devpan supplied the Dev24/36 medium-voltage switchgear and the low-voltage auxiliary distribution for the project.
Electrical Profile of the Project
- LocationGanja, Azerbaijan
- Building typeSwitchyard and substation
- Installed power≈ 2,500 kVA
- Transformer configuration2 × 1,250 kVA
- Main busbar rated current2 × 1,600 A
- Short-time withstand current (Icw)50 kA / 1 s
- Devpan scopeMedium voltage switchgear, low voltage switchboards and engineering
- Verification standardIEC 61439-1, IEC 61439-2
About the Project
In a switchyard, switchboards do more than distribute power: protection relays, circuit-breaker operating mechanisms, DC system chargers and SCADA equipment all depend on the auxiliary supply. If that supply fails, breakers may not be operable at the very moment a fault occurs. Ganja’s hot summers and cold winters make temperature and humidity control important in control buildings close to the open yard, and dust is a decisive factor in enclosure selection.
In a typical configuration, Dev24/36 modular switchgear at 10 kV feeds approximately 2 × 1,250 kVA distribution and station service transformers. On the low-voltage side, DevPanel boards with a 2 × 1,600 A main busbar and Form 3b segregation operate with two independent busbars, so auxiliary services continue if one source is lost. DevBox boards supply the control building, relay rooms, yard lighting and ancillary services. A generator of around 800 kVA supports DC systems and critical control loads during a total loss of supply.
Devpan Scope and Switchboard Architecture
Devpan’s scope runs from the 10 kV switchgear to the switchyard’s auxiliary and ancillary service distribution.
- MV switchgear (Dev24/36): 10 kV incomer, bus section, metering and transformer feeder panels; metal-enclosed modular design with 24 kV rated insulation.
- Auxiliary main boards (DevPanel): 2 × 1,600 A main busbar, 50 kA / 1 s, Form 3b, dual source and generator changeover.
- Sub-distribution boards (DevBox): relay and control rooms, DC chargers, yard lighting and HVAC supplies, IP54-IP55.
- Power factor correction (DevComp): automatic compensation to balance the power factor of auxiliary loads.
Technical Configuration
| Installed power | ≈ 2,500 kVA |
|---|---|
| Transformer configuration | 2 × 1,250 kVA |
| Medium voltage level | 10 kV (Dev24/36) |
| Low voltage / frequency | 400 / 230 V, 50 Hz |
| Main busbar rated current | 2 × 1,600 A |
| Short-time withstand current (Icw) | 50 kA / 1 s |
| Form of internal separation | Form 3b |
| Degree of protection (IP) | IP54 – IP55 |
| Generator back-up | 1 × 800 kVA |
| Verification standard | IEC 61439-1, IEC 61439-2 |
Devpan Products Used in This Project
Project-Specific Engineering Topics
Auxiliary supply continuity
Protection, control and DC system feeds come from two independent sources plus generator-backed circuits, securing breaker operation during faults.
MV switchgear safety
Mechanical interlocks and earthing switches in the Dev24/36 panels prevent incorrect switching during operation and maintenance.
Yard environmental conditions
IP54-IP55 enclosures, anti-condensation heaters and ventilation limit the effects of temperature and dust on boards near the open yard.
Remote monitoring
Breaker status and measurement data are passed to the SCADA system, making central supervision of the switchyard easier.
Frequently Asked Questions
What is the distribution power of a facility on the scale of Ganja Switchyard?
For a switchyard of this scale the installed distribution and auxiliary power is approximately 2,500 kVA, with a typical transformer configuration of 2 × 1,250 kVA. The low-voltage main busbar is typically rated 2 × 1,600 A with a withstand of 50 kA / 1 s, and the medium-voltage level is 10 kV.
Why is the auxiliary supply critical in a switchyard?
Protection relays, breaker motors and DC system chargers are all fed from the auxiliary supply; if it fails, breaker operation during a fault is put at risk.
What does the 24 kV insulation level of Dev24/36 panels provide?
It gives a wide insulation margin over the 10 kV operating voltage, improving reliability against overvoltages and harsh ambient conditions.
Similar Reference Projects
Mary SwitchyardSwitchyard and substation · Mary, Turkmenistan
Kiffa SubstationSwitchyard and substation · Kiffa, Mauritania
Shamakhi Resort ProjectHotel and hospitality · Shamakhi, AzerbaijanDo you have a project of a similar scale?
Send us your single-line diagram, your transformer rating or simply your load list. Our engineering team runs the short-circuit and discrimination study and defines the form of separation and busbar cross-section with you.
Request a quotation