UPS for Elevator

Elevators have become an integral part of modern life and are one of the fundamental transportation systems in high-rise buildings, business centers, hospitals, and residential projects. Failure of such critical equipment during situations such as power outages can create both safety risks and serious operational problems. The most effective solution to prevent elevators from suddenly stopping when the power goes out, to prevent passengers from being trapped, and to eliminate damage to elevator equipment is UPS (Uninterruptible Power Supply) systems designed specifically for elevators.

Why is it necessary to use UPS in elevators?

In the event of a power outage, voltage drop, power surge, or grid fluctuations, elevators inevitably come to a halt. In such situations, passengers being trapped in the elevator cabin poses a significant risk not only in terms of comfort but also in terms of safety. The UPS system kicks in the moment the power goes out, ensuring the elevator safely travels to the nearest floor and opens its doors.

The main reasons for using UPS in elevators are as follows:

• Prevent passengers from being trapped inside in the event of a power outage
• Protect elevator motors, control panels, and control systems from voltage fluctuations
• Ensuring safe evacuation in emergencies
• Ensuring the longevity of machine room equipment
• Compliance with regulations and safety standards

How Do Elevator UPS Systems Work?

Elevator UPS systems are specially designed for motorized systems requiring high starting currents, unlike conventional UPS models. When the elevator motor demands sudden power, the UPS is equipped to meet this demand. The system, which activates immediately upon a power outage to keep the elevator running without stopping, transfers the energy it receives from the battery bank to the elevator power supply via an inverter.

The working principle is as follows:

• During normal operation, the UPS regulates the mains electricity and keeps the batteries continuously charged.
• It activates immediately when the power goes out and supplies the elevator with energy from the batteries.
• The elevator is directed to a safe floor and passengers are evacuated.
• When power is restored, the UPS automatically switches back to the mains and recharges the batteries.

Thanks to this rapid transition mechanism, the elevator does not stop abruptly, does not shake, and users are not inconvenienced.

How is Elevator UPS Capacity Determined?

When determining elevator UPS capacity, many technical details must be taken into account. Factors such as elevator power consumption, motor type, control panel, inverter technology used, and elevator carrying capacity directly affect the correct UPS selection.

Criteria to be considered:

• Motor power (kW) and starting current: The elevator motor draws high current when operating. The UPS must be able to handle this current.
• Elevator usage type: Different types such as passenger elevators, freight elevators, or panoramic elevators have varying power requirements.
• Number of floors in the building: As the number of floors increases, the motor power and UPS capacity requirements also increase.
• UPS output type: Elevator UPSs should generally have a pure sine wave output.
• Emergency operation time: Sufficient backup time is required to ensure passengers can evacuate safely.

Therefore, UPS selection requires professional calculation, and a randomly selected UPS may not only fail to operate the elevator but also damage the equipment.

Advantages of Using UPS in Elevators

The advantages provided by elevator UPS systems are not limited to energy continuity. UPS also protects equipment, reduces maintenance costs, and significantly increases building safety.

Key advantages:

• Provides safe discharge during power outages
• Extends the life of machine room equipment
• Extends the life of machine room equipment
• Prevents elevator cards from burning
• Provides smooth and stable operation
• Enhances the safety and comfort of building residents

The use of UPS systems has become mandatory by regulation, especially in large sites and commercial buildings.

Elevator UPS Models and Differences

Elevator UPS systems are generally divided into two main categories:

1. Line-Interactive Elevator UPS Systems

They are frequently preferred in medium-sized buildings and apartments. They offer both economical and stable performance. They provide protection against voltage fluctuations and provide an effective solution during short-term outages.

2. Online (Double Conversion) Elevator UPS Systems

These systems offer uninterrupted and maximum protection. They are preferred for large sites, shopping malls, hospitals, and high-rise business centers. They provide the cleanest and most stable electricity thanks to continuous AC-DC-AC conversion.

These models provide maximum safety, especially in sensitive inverter-driven elevators.

How to Install an Elevator UPS?

Elevator UPS installation requires expertise. Proper design and installation of the system is important for both the health of the elevator motor and the efficient operation of the UPS.

The installation steps are generally as follows:

• The power requirement of the elevator is determined
• UPS capacity is selected based on technical calculations.
• The battery pack is placed in the appropriate area.
• UPS – Elevator control panel connections are made
• Testing is conducted
• Delivered to the user with a report and warranty information

Delivered to the user with a report and warranty information