Oxagon is an industrial development within NEOM on Saudi Arabia’s Red Sea coast. Devpan supplied motor control centres, main distribution boards and power factor correction for the facility.
Electrical Profile of the Project
- LocationNEOM, Saudi Arabia
- Building typeIndustrial facility
- Installed power≈ 10,000 kVA
- Transformer configuration4 × 2,500 kVA
- Main busbar rated current2 × 4,000 A
- Short-time withstand current (Icw)80 kA / 1 s
- Devpan scopeLow voltage switchboards, engineering and site coordination
- Verification standardIEC 61439-1, IEC 61439-2
About the Project
Industrial plants on the Red Sea coast have to cope with two stresses at once: summer ambient temperatures well above 45 °C and air laden with salt and fine dust. Heat accelerates temperature rise inside the enclosures, while the saline atmosphere attacks busbar joints and terminals. On top of that, process lines driven by large numbers of induction motors draw considerable reactive power and cause voltage dips during starting. The 60 Hz supply frequency also has to be reflected in every device selection.
For a facility of this scale, the distribution architecture is typically built around four 2,500 kVA transformers fed from a 13.8 kV network and two independent 4,000 A main busbars. A bus coupler lets one half pick up the load if a transformer is taken out of service. IP54 enclosures with Form 4b segregation allow individual functional units to be worked on while neighbouring feeders stay live. Motor loads are grouped in DevControl MCCs, and reactive power is balanced by stepped DevComp panels.
Devpan Scope and Switchboard Architecture
Devpan’s scope covers the low-voltage system from the transformer secondaries to the process motors and auxiliary distribution points.
- Main distribution boards (DevPanel): typically 2 × 4,000 A, 80 kA / 1 s, Form 4b, with bus coupler and generator changeover.
- Motor control centres (DevControl): withdrawable starter units with VSD and soft-starter outgoing feeders for process motors.
- Power factor correction (DevComp): detuned, stepped capacitor banks holding the power factor at its target value.
- Sub-distribution boards (DevBox): IP54 local distribution for workshops, storage and administration areas.
- Standby power integration: automatic transfer and load-shedding logic for approximately 2 × 1,500 kVA of generation.
Technical Configuration
| Installed power | ≈ 10,000 kVA |
|---|---|
| Transformer configuration | 4 × 2,500 kVA |
| Medium voltage level | 13.8 kV |
| Low voltage / frequency | 400 / 230 V, 60 Hz |
| Main busbar rated current | 2 × 4,000 A |
| Short-time withstand current (Icw) | 80 kA / 1 s |
| Form of internal separation | Form 4b |
| Degree of protection (IP) | IP54 |
| Generator back-up | 2 × 1,500 kVA |
| Verification standard | IEC 61439-1, IEC 61439-2 |
Devpan Products Used in This Project
Project-Specific Engineering Topics
High-ambient derating
Busbars and breakers are sized with derated currents for ambient temperatures above 45 °C, and internal heat dissipation is verified by calculation.
Motor starting control
Large drives are started via VSDs or soft starters to avoid voltage collapse on the main busbar and nuisance tripping.
Corrosion protection
Tin-plated copper busbars, sealed cable entries and IP54 enclosures protect against the coastal atmosphere.
Harmonic management
Drive harmonics are limited by detuning reactors in the correction panels, preserving capacitor life.
Frequently Asked Questions
What is the installed power at Oxagon?
For an industrial facility of this scale the installed power is approximately 10,000 kVA, with a typical transformer configuration of 4 × 2,500 kVA. The main busbars are typically rated 2 × 4,000 A with an 80 kA / 1 s withstand, fed from a 13.8 kV medium-voltage network.
How does a 60 Hz supply affect switchboard design?
Breakers, contactors and capacitors must be rated for 60 Hz, and correction steps and detuning reactors are calculated for that frequency.
Why is Form 4b segregation specified?
Form 4b places each functional unit and its terminals in a separate compartment, so one feeder can be maintained while the rest of a continuously running process stays energised.
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