Powering a commercial hotel elevator usually requires a robust industrial power grid.
But what happens when the hotel runs entirely on solar energy?
Recently, a client building a 6-story eco-hotel in Nigeria approached us with a unique electrical challenge.
They had a standard 1800mm × 1800mm shaft ready for a Machine Room-Less (MRL) passenger elevator.
However:
- The hotel was powered by a solar energy system
- Only 220V single-phase power was available
Standard 630kg passenger elevators require:
- 380V power
- Or 220V 3-phase power
Running a commercial-grade system on single-phase solar power is extremely rare and technically challenging.
Here is how our electrical engineering team made it possible.
Overcoming the 220V Single-Phase Barrier
Most manufacturers would either reject this project or require a full electrical system upgrade.
As a direct manufacturer with an in-house electrical R&D team, we engineered a custom solution.
We:
- Customized the frequency inverter
- Optimized the control system
This allowed:
- Stable operation on 220V single-phase power
- Smooth lifting of a 630kg cabin (approx. 8 passengers)
- Full compatibility with the hotel’s solar power system
Engineered for Grid Instability
In solar-powered environments or unstable grids, electrical protection is critical.
We integrated two key safeguards to ensure system stability and passenger safety.
Heavy-Duty Voltage Stabilizer
Solar output can fluctuate due to environmental conditions.
Our solution:
- Integrated a custom voltage regulator
- Filtered power spikes and drops
This ensures:
- Clean and stable power supply
- Protection for the elevator control system
ARD (Automatic Rescue Device)
In the event of full power loss:
- The ARD system activates immediately
- The elevator moves to the nearest floor
- Doors open safely
This guarantees:
- No passengers are trapped
- Safe evacuation under all conditions
Maximizing the 1800 × 1800mm Shaft (MRL Design)
In addition to electrical innovation, the mechanical layout was optimized.
Using a Machine Room-Less (MRL) design, we:
- Installed the compact motor inside the shaft
- Eliminated the need for a rooftop machine room
Benefits:
- Reduced construction cost
- Maximized usable building space
- Maintained a spacious 630kg cabin
Project Specs at a Glance
| Feature | Custom Project Details |
|---|---|
| Building Type | 6-Story Hotel (Nigeria) |
| Capacity & Type | 630kg MRL Passenger Elevator |
| Shaft Dimensions | 1800mm × 1800mm |
| Power Supply | 220V Single-Phase (Solar Compatible) |
| Safety & Stability | Voltage Stabilizer + ARD System |
Need a Custom Electrical Solution for Your Project?
Whether you are dealing with:
- Off-grid buildings
- Solar-powered systems
- Unstable power supply
Our engineering team can design a solution tailored to your conditions.
We don’t just supply elevators — we engineer systems that match real-world constraints.
