Malawi National Park is a protected park area in Malawi with visitor and operational facilities. Devpan supplied the main distribution board, sub-distribution for visitor and service buildings and external lighting panels.
Electrical Profile of the Project
- LocationMalawi
- Building typePublic realm
- Installed power≈ 1,000 kVA
- Transformer configuration1 × 1,000 kVA
- Main busbar rated current1 × 1,600 A
- Short-time withstand current (Icw)50 kA / 1 s
- Devpan scopeLow voltage switchboards, engineering and site coordination
- Verification standardIEC 61439-1, IEC 61439-2
About the Project
National parks usually sit at the far end of the grid. Supplied by long medium-voltage lines, such sites routinely face voltage fluctuations, frequent and prolonged outages and intense lightning activity in the rainy season. Visitor centres, lodges, water pumps, refrigeration and communications must still operate reliably under these conditions. To protect wildlife, external lighting has to be carefully controlled, and equipment must be sealed against humidity, insects and small animals.
For a site of this scale the typical solution is a single 1,000 kVA transformer fed at 11 kV and a 1,600 A main busbar. A generator of approximately 500 kVA, with automatic changeover, picks up water, refrigeration, communications and security loads. The main board includes surge protection and voltage-monitoring relays. A Form 2b – 3b construction keeps the installation simple and easy to maintain, a DevComp panel balances the power factor and DevPower panels manage outdoor lighting.
Devpan Scope and Switchboard Architecture
Devpan’s scope covers LV distribution from the transformer to visitor, lodge and service buildings and outdoor lighting.
- Main distribution board (DevPanel): typically 1 × 1,600 A, 50 kA / 1 s, Form 2b – Form 3b, with generator changeover and surge protection.
- Building boards (DevBox): sub-distribution for the visitor centre, lodges, workshop and staff buildings.
- Power factor correction (DevComp): automatic stepped compensation for pump and refrigeration loads.
- Lighting and power panels (DevPower): timer and photocell control of road, car park and perimeter lighting.
- Standby power: an approximately 1 × 500 kVA generator maintaining water, refrigeration, communications and security.
Technical Configuration
| Installed power | ≈ 1,000 kVA |
|---|---|
| Transformer configuration | 1 × 1,000 kVA |
| Medium voltage level | 11 kV |
| Low voltage / frequency | 400 / 230 V, 50 Hz |
| Main busbar rated current | 1 × 1,600 A |
| Short-time withstand current (Icw) | 50 kA / 1 s |
| Form of internal separation | Form 2b – Form 3b |
| Degree of protection (IP) | IP31 – IP41 |
| Generator back-up | 1 × 500 kVA |
| Verification standard | IEC 61439-1, IEC 61439-2 |
Devpan Products Used in This Project
Project-Specific Engineering Topics
Weak-grid conditions
Voltage-monitoring relays and automatic changeover transfer loads safely to the generator during fluctuations or outages.
Lightning and surges
Coordinated surge protective devices in main and sub-boards protect sensitive electronics.
Wildlife-friendly lighting
Outdoor lighting is limited by timer and photocell control to reduce its impact on wildlife.
Environmental sealing
Sealed cable entries and appropriate IP ratings keep humidity, insects and small animals out of the enclosures.
Frequently Asked Questions
What is the installed power at Malawi National Park?
For a national park facility of this scale the installed power is approximately 1,000 kVA, with a typical transformer configuration of 1 × 1,000 kVA. The main busbar is typically planned at 1 × 1,600 A and 50 kA / 1 s, with 11 kV medium voltage and a standby generator of around 1 × 500 kVA.
Which loads should a generator serve at a remote site?
First water pumps, cold storage, communications, security and emergency lighting; lodge loads are then brought in stages according to generator capacity.
Why is Form 2b – 3b sufficient?
At this scale and load profile, simpler segregation provides adequate safety while making maintenance by local teams easier and reducing cost.
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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.
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