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When the power fails, a lift stopping between floors is frightening and potentially dangerous for passengers — especially the elderly, children, patients and anyone with claustrophobia. An elevator rescue UPS brings the car to the nearest floor during an outage and opens the doors so passengers can leave safely.
What Is an Elevator UPS and What Does It Do?
An elevator UPS keeps its batteries charged from the mains and, during an outage, powers the lift controller and rescue circuit. Its purpose is not to keep the lift in service but to bring the car to the nearest floor. That is why it differs from a general-purpose UPS:
- Special software for the motor's peak start-up current
- Cold start from battery with no mains present
- Automatic shutdown after the rescue to protect the batteries
- Input/output arrangement ready for connection to the lift panel
How Does the Rescue System Work?
- The outage is detected and the UPS switches to battery instantly.
- The lift controller enters rescue mode.
- The car moves at low speed, usually in the lighter-load direction, to the nearest floor.
- The doors open and passengers exit.
- The UPS shuts itself down after a set time to protect the batteries.
The rescue system must be compatible with the lift controller, so installation should be coordinated with your lift maintenance company.
How Many Rescues Can It Perform?
This depends on motor power, car load, floor height and battery condition. With fully charged batteries the ELSIPOWER 1,500 VA elevator UPS typically performs:
| Lift motor power | Typical rescues |
|---|---|
| 5.5 kW | 5 |
| 7.5 kW | 4 |
| 11 kW | 2 |
What to Look For
- Suitability for the motor power and start-up current
- Cold start from battery
- Compatibility with the lift controller's rescue input
- Deep-discharge and overcharge protection
- Clear status indicators and alarms
- Accessible service for battery replacement and checks
When Should Elevator UPS Batteries Be Replaced?
Maintenance-free batteries in rescue UPS units are typically replaced every 3–5 years, sooner in hot machine rooms. A rescue test during periodic lift maintenance is the most reliable way to ensure the system works when needed.
Frequently Asked Questions
Does an elevator UPS keep the lift running normally?
No — it is designed to bring the car to the nearest floor and release passengers, not to provide normal service.
Does it replace a generator?
A generator supplies the building for longer but takes time to start and is not present in every building. The elevator UPS acts instantly. The two complement each other.
An elevator rescue UPS for your building
Send us your lift motor power and number of floors, and we will recommend the right ELSIPOWER elevator UPS. +90 212 210 75 51 · WhatsApp
