What is Lift Inverter/Lift UPS/ERD
A Lift inverter, also known as an Elevator inverter, is a device that provides backup power to Lifts/Elevators in the event of a power outage. It does this by converting DC power from batteries into AC power.
https://www.quora.com/What-are-the-benefits-of-a-lift-inverter
Su-vastika has designed an innovative and advanced Lift UPS and named it an ERD (Emergency Rescue Device) for power backup of the lift & escalator.
https://suvastika.com/what-is-emergency-rescue-device/
ERD is a better device than the Lift Inverter and Lift UPS as it has more features than the Lift Inverter and Lift UPS.
Su-vastika is one of the largest Indian manufacturers and suppliers of lift inverters/UPS/ERD and has Patented the technology in its name.
Why Emergency Rescue Device (ERD) is important for Lifts?
Switching time of 2ms checked on power analyzer
Nowadays, people experience power failures in the lift invariably, which is horrifying most of the time. The scenario is like when the power fails, you get a sudden big jerk, the lights are switched off, and the lift is stopped. The heart pounds heavily as the elevator moves up or down, so the oxygen level changes in the heart and suddenly, the lift stops. There is a sinking feeling, and on top of that, lights are turned off, and darkness in the lift for the next 30 seconds is a big vacuum where you don’t know whether you will be able to see life again. Then suddenly, lights are switched on, and the lift comes to the next floor with a lot of noise, and the door opens. Now the generator starts, and the lift operates, and it straight away takes you to the basement and starts afresh journey, which takes the next 10 minutes or more of your life as it gets reset and has to start from the beginning.
Considering this problem, Su-vastika has developed a High Capacity 3 PHASE Lift UPS “Emergency Rescue Device (ERD)”, a Patented Technology of Su-vastika. Su-vastika ERD has been designed with A high-capacity inbuilt isolation transformer to provide dedicated power backup to lifts/elevators in case of power failure. The switching time of ERD is in milliseconds. Hence, customers do not feel any jerks/interruptions in the working of Lifts in case of power failure, providing them with a smooth and safe experience.
Features of Lift UPS/ Emergency Rescue Device
Lift phobia is officially not recognized as a fear, but it still makes countless people uncomfortable daily. Many people try to avoid lifts because they feel unsure about their safety. Ensuring higher safety standards for lifts by installing ERD is one way to make lifts less appalling.
Risk/Causes at the time of Power failure in Lifts
- Trembling
- Nausea
- Difficulty breathing
- Dry mouth
- Feeling faint
- Dizziness
- Confusion
- Hyperventilation
- Blood pressure spike
- Feeling butterflies in the stomach
- Sweating
- Palpitations
- Upset stomach
- Shaking
- Pain in the chest
- Chills
- Hot flushes
- Headaches
Risk of Failure of Power back up in Lifts
Haryana government takes lead in prioritizing its public’s safety by mandating ERD in Lifts
The Haryana government has exhibited foresight and demonstrated that it is the responsibility of every government (state, centre) to adopt measures to ensure the public’s safety. Outpacing other states, it has recently amended the “Haryana Lifts and Escalators Act, 2008”.
After the changes in the Act, the owners of high-rise buildings (above 15 meters in height) are obligated to install Emergency Rescue Devices (ERD) in their lifts, ensuring no mishap happens due to people getting stuck in lifts. The amendment was made with the safety of the passengers stuck in the lift during a sudden power failure.
Refer to Bill no 22-HLA of 2020 of Haryana Lifts and Escalators Act, 2008, issued by the Government of Haryana.
What is ARD and How ERD is better than ARD?
ARD, which is called an automatic rescue device, is an old technology that is generally used today. ARD starts only when the lift is stopped after a power failure, and it activates after 30 seconds to 1 minute. ARD is not made for lift backup applications. It’s made for door-opening purposes in case of power failure. The lift door should be opened on the floor only, so this takes the lift to the nearest door so that passengers can be rescued in case of power failure.
However, with lift inverter/Lift UPS/ERD, the switching time is almost zero, so the lifts do not stop occasionally, and the generators are not required. Whenever the power goes, the lifts work smoothly without any jerks, keeping the lift electronics and electrical systems running without any breaks.
The power quality supplied by the ERD is better than that provided by the Electricity companies as it is a pure sine wave power and the frequency is exactly 50Hz. The voltage supplied has high stability compared to that supplied by the utility supplier. Since there is no break in the power, the smooth functioning removes the chances of lift failures. The power quality provided by the generator cannot be compared to the Lift inverter/lift UPS/ERD as it has a very stable and clean power and only caters to the lift load.
No Generator or existing ARD system can provide smooth operation of elevators like a lift Inverter/ERD during the critical period of a power failure, saving people’s lives in an economical and environmentally friendly fashion.
Understanding Lift Power Circuit With ERD
How ERD is better than Online UPS
Generally, High-Frequency Online UPS is being used for power backup of Lifts, which is a completely wrong practice. Lifts work with inductive motors and need technology to support Mechanical and Inductive loads, while Online UPS are meant for Computer/IT loads. The isolation transformer is a must in the UPS to support Mechanical and Inductive loads, such as Lifts, to protect the UPS and equipment.
Su-vastika Bluetooth/WiFi monitoring App
Su-vastika has developed Bluetooth and wifi app for all its Inverters/UPS/Home UPS/ Solar Hybrid PCU/ERD/ESS that helps to monitor and control UPS through a Mobile app or direct PC and is loaded with the patented software.
This feature offers many advantages over regular Inverters/UPS.
- Ease of installation: Bluetooth and WiFi-enabled inverters can be installed without any extraordinary changes. Su-vastika, all UPS have the USB port at the back for Bluetooth/wifi compatibility.
- Remote monitoring: With Bluetooth and wifi, you can monitor your inverter from anywhere worldwide, as long as you have an internet connection. This is ideal for homeowners who want to monitor the power situation at home or office while away.
- Real-time data: Bluetooth and WiFi-enabled inverters can provide real-time data on your Inverter/UPS system performance. This data can be used to optimise your system’s performance and troubleshoot any problems.
- Digital Warranty: The Digital Warranty gives you peace of mind; you don’t need to keep any documents, and it works inside the microprocessor. The warranty works with the usage of the Inverter/UPS and not from the day you purchase the product.
- Voltage and frequency: In case of low or high Voltage, one can have the data recorded for the high and low voltages.
- Shows the charging percentage of the battery
Digital Warranty
Su-vastika brings in a Digital warranty for Inverters, a remarkable, revolutionary, and mindful innovation by Su-vastika Systems. Su-vastika’s Digital warranty is linked with the microprocessor in the PCB Mains card of its complete range of UPS.
The warranty shall start only when Inverter is connected to Battery, and when the Battery is disconnected from Inverter, the warranty stops.
Su-vastika Digital warranty provides consumers and dealers/ Distributors complete peace of mind.
This is even more beneficial in projects where site readiness takes time and inverter installation is delayed. Don’t worry; your warranty won’t be lapsed due to project delays, ensuring that customers receive the complete coverage they are entitled to.
By linking the warranty with the microprocessor in the PCB card of the inverters, Su-vastika has found a unique way to ensure warranty coverage that aligns with the actual usage of the Inverter.
Works Best with Lithium Ion and LifePO4 Batteries
Su-vastika lifts inverter/lift UPS/ERD is compatible with all types of batteries viz Lead-acid and Lithium Ion batteries. Lithium-ion/LifePO4 batteries are compact and have three times higher efficiency in handling Lifts’ mechanical load than Lead acid batteries. Since the discharge current is very high in the Lift Inverter/Lift UPS/ERD, the SMF Lead Acid or tubular batteries have a C20 rating, so the discharge current is too high for them to take. Since a Lithium battery comes with a C1 rating, this is the best battery for the Lift Inverter application as the life it will get is around 7 to 10 years compared to a Lead Acid battery which will last a maximum of 2 years.
The price of the Lift inverter or the price of lift UPS will be cheaper in the case of lead Acid battery, but in the long run, the Price Of Lift inverter or the price of Lift UPS will be more affordable with the Lithium battery pack. Also, the space taken by the Lead acid battery bank is another important parameter to consider, as the space in the lift room is very limited to install the Lift Inverter with such a heavy Lead Acid Battery Bank.
ERD brings Tailormade Solution
Su-vastika ERD can be tailor made as per specific requirement of customer:-
- ERD can be designed for small to big lifts up to 500 KVA load
- ERD can run on lead-Acid as well as lithium batteries
- Works on Bypass mode hence protects battery from continuous charging as in case of Online UPS
- Make to order for Regenerative lifts
- Does not require any air conditioner.
ERD is Solar Enabled
ERD is a green & clean technology which can make it solar enabled system by adding a charge controller and solar panels, which can charge the ERD power bank through solar energy. We have developed a technology where solar can be added at any stage.
The extra electronic board of charge controller is inserted and that talks to the controller board of the ERD and these two work in a synchronized manner. As when solar is available the battery charging is happening through solar or if solar is less than the charging is happening through the sharing of solar and grid both. But the priority is always through the solar. When the batteries are charged and solar is available then the system switch off the mains and works on the solar and battery power to save the power bill completely. Since the battery is charged through the solar the battery life increases to 20 to 40 percent. Also, in this case, the generator may not be required at all because solar power takes care of a long backup time as well.
ERD Display / Electronic Control Unit
ECU as the name is Electronic Control Unit which is installed inside the lift which act as a Display and gives indication to the people traveling in the lift that lift is working on the Mains power or on the ERD power. Since there is no feeling comes to the passenger travelling in the lift of power outage so it’s important to give the idea to the passenger that lift is working on the emergency backup. So, this ECU has the announcement facility as well so there is a memory card inside the ECU which can be used as a recorder to record the announcement messages in different languages and that can be programmed on the site itself. In case of battery getting low or completely discharged it give the indication along with the announcements to the passenger travelling in the lift. It will save the space as well as cost and maintenance.
Central ERD System
Su-vastika has designed 10 KVA to 500 KVA ERD system which can run 4 to 20 lifts together of different capacities and can be placed in a ground position in the Area which can save the costing, space and maintenance cost. This central unit can be used as a back- up for common lights of the building as well. Since there are no switching time so common areas lights will also keep functioning without any flicker along with the continuous operation of lifts in case of power failure.
We have already completed a project of Chintels Paradiso where we have operated 18 lifts with one central ERD system. We have specially designed two ERD’s of 150 KVA & 200 KVA to run the 18 lifts of the capacity of 11.5 KV along with the 20 motors which are working in the complex situation for various other applications (Photo enclosed)
These ERD’s have no switching time so the motors & other load connected to it has no inrush current requirements & every load is working without any switching time so people can’t feel any break in services.
These ERD’s can also be designed as per the customer specifications and requirements like common lighting loads, motors or any other common loads required by the cluster of building whether commercial or residential as per the requirement of the individual customer.
Customised ERD for Regenerative Load
For conventional lifts, the power generated by the traction machine is dissipated as heat in the building, which wastes energy and creates unwanted heat in the machine rooms.
Lifts with a regenerative function obtain power from the electrical
supply network; when it travels downwards with a heavy load or upwards with a light load, the traction machine will act as a power generator. These Regenerative Lifts, the new technology is, used to feedback this Regenerative energy coming from the lifts to the grid, and the grid reutilise this energy. Compared to conventional lifts, regenerative lifts are 20% to 30% more energy efficient.
https://www.emsd.gov.hk/filemanager/en/content_764/applctn_lift_rgnrt_pwr.pdf
Su-vastika also manufactures premium regenerative lift backup Lift Inverters/UPS/ERD. We at Su-vastika are continuously improving the technology so that we can improve our technology as per the lift manufacturers’ expectations.
Su-vastika ERD is tested compatible with all top Elevator manufacturing companies in India
Su-vastika ERD is Certified by BIS India
Electrical Contractual License owned by Su-vastika
ERD is PATENTED TECHNOLOGY BY SU-VASTIKA
Su-vastika has done more than 250+ installations with many Major Builders. List of few Esteemed customers of Su-vastika as given
Su-vastika