What are the Benefits of Lift Inverters/ERD for Buildings and Owners? Have you experienced a power outage in a moving lift/elevator that stopped with a sudden jerk at society, hospital or business house or listened to it? What panic did you observe there? I was trapped once in the cabin of our society’s lift with […]
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The Latest Lithium battery Technology will change the paradigm of storage solutions in the long run as today, and people are using a different type of Lead Acid batteries for storage which is SMF, Tubular or Gel based tubular or SMF technologies which have a lot of challenges and limitations.https://suvastika.wordpress.com/2023/01/21/the-lithium-battery-technology-going-to-change-the-battery-storage-solutions/#comments The first limitation is cycle […]
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What are the Benefits of Lift Inverters/ERD for Buildings and Owners? Have you experienced a power outage in a moving lift/elevator that stopped with a sudden jerk at society, hospital or business house or listened to it? What panic did you observe there? I was trapped once in the cabin of our society’s lift with […]
https://i0.wp.com/suvastika.com/wp-content/uploads/2023/06/41621ccc-6e24-48dd-9f97-9194ee9291c8.jpg?fit=1200%2C1600&ssl=116001200Kunwer Sachdevhttps://suvastika.com/new/wp-content/uploads/2024/02/Suvastika.pngKunwer Sachdev2023-07-08 18:54:492024-05-30 01:23:15The Benefits of Lift Inverters/ERD for Buildings and Owners
The Latest Lithium battery Technology will change the paradigm of storage solutions in the long run as today, and people are using a different type of Lead Acid batteries for storage which is SMF, Tubular or Gel based tubular or SMF technologies which have a lot of challenges and limitations.https://suvastika.wordpress.com/2023/01/21/the-lithium-battery-technology-going-to-change-the-battery-storage-solutions/#comments The first limitation is cycle […]
https://i0.wp.com/suvastika.com/wp-content/uploads/2024/01/6b8e4bad-d138-4f22-9253-74e4246ebfe9.jpg?fit=1164%2C1600&ssl=116001164Kunwer Sachdevhttps://suvastika.com/new/wp-content/uploads/2024/02/Suvastika.pngKunwer Sachdev2023-07-08 17:18:052024-03-11 05:55:46Lithium battery is going to replace Lead Acid Battery Technology
What are the Benefits of Lift Inverters/ERD for Buildings and Owners? Have you experienced a power outage in a moving lift/elevator that stopped with a sudden jerk at society, hospital or business house or listened to it? What panic did you observe there? I was trapped once in the cabin of our society’s lift with my little daughter. She was terrified when the lift stopped suddenly, with darkness between the two floors. And the situation can become worse in the closed lift if there are pregnant women, children, senior citizens, and patients with high blood pressure, heart disease, etc.https://www.quora.com/What-are-the-benefits-of-a-lift-inverter
But there is a foolproof solution to this horrifying situation and claustrophobia of people if lifts/elevators are attached to Lift inverters/Lift UPS/Emergency Rescue Devices (ERD). An Emergency Rescue Device (ERD) is an electronic and electrical apparatus that provides emergency power backup to the lift or elevators with almost zero switching time when the input power source or mains power supply fails suddenly. The power supply outage can be due to a fault, shortage of power, Natural Disaster, or Fire.https://suvastika.wordpress.com/2021/05/17/how-power-backup-makes-lift-elevators-users-tension-free-in-case-of-power-failures/#comments
An Emergency Rescue Device (ERD) https://suvastika.com/how-does-an-emergency-rescue-device-erd-in-lifts-save-passengers-from-mishaps/differs from an auxiliary or power backup system like Generator and Automatic Rescue Device(ARD). No Generator or existing ARD system available in the market can provide smooth operation of elevators like an Emergency Power System for lift back up, which works on the storage battery system and is called lift Inverter/Lift UPS/ERD during a critical period of a power failure, Fire, or earthquake. This Emergency power System for lifts saves the passenger by keeping the lift moving. https://en.wikipedia.org/wiki/Emergency_power_system
Generator as Power Backup for Lift
Lift Inverter with SMF battery bank
Two generator sets, Automatic Genset & Manual Genset, are attached to the Control Panel that supplies current to the motor for moving the Lift/Elevator upward and downward. If the power supply fails for any reason like power shortage, Fire, or Natural disaster, the Automatic Genset takes 45 Sec to 1 minute to provide power to the lift. In the same situation, Manual Genset takes 2 to 5 minutes to restore the power supply. Here we can think of a horrible and terrifying situation if there are Children, Pregnant women, Sr. Citizens, or critical patients on the 11th Floor and the lift stops suddenly with a waiting time of 45 Sec to 5 Minutes to resume power by a Generator.
Automatic Rescue Device (ARD) as Power Backup for Lift
An Automatic Rescue Device (ARD) stops the lift when the main power supply is cut suddenly and rechecks all the circuits to confirm if everything is okay. This process takes at least 45 Sec, and then it moves the lift to the next lower or upper Floor with a lot of jerks and turbulence. It causes heart patients different problems, and pregnant women can have long-term issues in that state. It also damages the electronic mechanism of the device and becomes one of the major causes of the lift’s costly maintenance.
What is Emergency Rescue Device (ERD) or Emergency Power System & how it differs from ARD and DG?
An Emergency Rescue Device (ERD) is an electronic and electrical apparatus based on future technology developed by collective efforts of qualified and experienced electronic, electrical, and computer hardware & software engineers. WHEN THE MAINS POWER FAILS, an ERD provides emergency power to the lifts/elevators with a 3-phase power supply. It differs from any other emergency power system, like a generator or ARD, because it provides near-instantaneous protection from input power cuts by supplying electric current stored in batteries with zero switching time.
The technology used in the development of ERD is different from inverter technology. The ERD technology is specially designed for lift loads only. It takes care of the regenerative load, and the switching time is almost zero. As a result, the lift/ elevator does not know about switching from one load to another. The price of the Lift Inverter can be checked Online.
What are the features of the Emergency Power System/Emergency Rescue Device (ERD)?
In a nutshell, the ERD has different features like a lift emergency power backup, for example:
It provides smooth running if the power supply goes off suddenly.
It gets off any floor without any sudden jerk.
There is no fear and claustrophobia in the mind of lift users inside the cabin.
A panel inside the lift shows the status of power and its backup.
There is no chance of damage to elevators for the sudden stop or excess current at the start. And finally
It provides peace of mind to lift users whether they use it in high-rise apartments, hospitals, or business offices.
What are the key benefits of EPS/ERD?
There are various benefits of ERD if it is attached to a control panel which supplies current to the electric motor to move the lift up or down:
1. EPS/ERD Protects Lift User’s Life
When people are stuck in closed lifts/elevators due to a sudden power outage, it creates a fear psychosis through claustrophobia, and they feel choked despite proper ventilation in the lift. According to the American Journal of Psychology, this can aggravate serious and life-threatening situations for the lifts’ occupants, especially kids, pregnant women, elders, disabled, and serious patients. This small time-lapse of 30 to 45 seconds can lead to panic and horrible situations like fainting of occupants to such a situation that can trigger cardiac arrest.
2. EPS/ERD Prevents Apparatus Damages
The switching time of most Diesel Generators to provide backup current to the lift control panel is relatively sluggish, from 90 seconds to 5 minutes or more, which causes lift electronic parts damage. But in the case of ERD, the switching time is almost zero, which prevents damage to the lift’s electronic mechanisms in the long run.
3. EPS/ERD Saves Lift Users from Disaster
An ERD provides an uninterruptible electronically controlled software program-based power supply to the lifts in all scenarios. It includes natural disasters like Fire, Earthquake, and Grid Failure, especially for high risers in urban areas. For example, in case of fire main power supply is cut, survivors on the upper floors can come down with the help of the ERD power supply and save them from any untoward happenings.https://suvastika.com/erd-lift-inverter-lift-ups-for-back-up-of-lifts-in-case-of-power-failure/
4. ERD will be the only power backup in future
ERD will become the only option for power backup because generators emit particulate matter containing burnt hydrocarbons and nitrogen oxides (NO2). These hydrocarbons and NO2 add to air pollution. If the generator is in bad condition, it can emit unburnt hydrocarbons, which are even worse for the environment. They also produce noise. So generators are getting banned in most of the cities in future as pollution is a big challenge for the future generations. Moreover, ERD can provide as much power backup as the generator requires without rest. The Price of the Lift Inverter is available on request.
Thus ERD-enabled lifts eliminate the most horrible situation while providing disaster resilience to the buildings, users, and operators. And it saves the lives of lift users in an economical and environmentally friendly manner that no generator or existing ARD system can provide.
Advantages of EPS/ERD in Brief
ERD is environment-friendly as it does not produce air pollution, noise pollution, or vibration, and it can be solar-powered.
ERD is developed and based on Disaster Response Management System. It maintains Fire Safety norms for the lifts and protects against Lift accidents due to power failure and earthquakes.
ERD is cost-effective in the market compared to the size and load of UPS’s cost. It has less running cost of electricity and longer life of its Batteries.
It can provide the backup time to run the lifts from 10 cycles of lift operations to 2,000 cycles depending on the load capacity of ERD attached to the control panel. And the one cycle counts for the complete process of the lifts from ground to top Floor and top Floor to ground Floor.
Lithium batteries can also be used in ERD to save space, maintain the longevity of battery life, and reduce the battery’s weight.
The ERD is technologically designed to install a solar charge controller externally to save electricity costs and provide a completely green solution prescribed by the green building norms.
Thus, lift inverter/UPS/ERD is the “All in One” Power Backup Solution for Lifts and Elevators that works with minimal human intervention and saves lives, apparatus, lifts, cost, and environment.
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The first limitation is cycle life, as Lead Acid based batteries cannot match the Cycle life of a Lithium battery. In literal terms, the Lead Acid battery life is defined by various parameters. One of them is refilling of battery water which is a big challenge for the user as they are not able to fill the water in time and what kind of water they are supposed to fill is another challenge as they fill with any RO water or normal water which destroys even the normal cycle life. The Gel battery has the challenge of higher temperatures, so the performance goes down if the temperature is higher than a certain defined value.
Whereas Lithium battery is a very stable technology which has been proven for almost two decades now, specially LifePO4, which is a very well-accepted technology and the cycle life varies on the good BMS, which regulates proper charging and discharging so that battery is minimal heating inside than we can get anywhere between 2000 to 3000 cycles. In contrast, Lead Acid cannot perform more than 400-500 cycles. So clear edge in terms of cycle life.
Another important factor is capacity at different discharge levels. So Lead Acid batteries are generally designed at C20 design, meaning you can discharge 5% of the storm, and only you will get rated capacity. This is also unavailable as making Lead Acid is crude, and consistent power is challenging. If you discharge at the 50% rating of the battery, generally speaking, it gives you 50% of its rated capacity. Lithium is a C1 battery, so the capacity remains 100% at any load. This is a big difference when we use these batteries for storage purposes like inverters, UPS, and Solar solutions; the Lead Acid backup time can’t match the Lithium battery pack.https://en.wikipedia.org/wiki/Lithium-ion_battery
Another major challenge is the cell balancing option available in the Lithium battery pack in the BMS, which is one reason that battery life can be achieved as the Lead Acid battery has six cells that cannot be balanced as there is no provision inside the battery. If we need to operate higher DC voltages, then we need the balancing between the batteries, and that’s also not done by the user. So if we need to put 120 V DC, then we need 10 Lead Acid batteries, which take up a big space and can’t be balanced with each other and. Internal cells of each battery pack is also impossible. The connecting wires take a longer route which becomes another challenge as each battery takes its own space, and we need to keep them at a distance which creates wire losses. The Lithium is a single pack and one-fourth of the size of the Lead Acid battery bank. So there are hardly any losses between the battery cells, which keeps minimum losses and cell balancing for each cell is balanced through the BMS. So, in the end, there is no comparison between Lead Acid batteries and Lithium batteries. The industry will be revolutionised in the next five years, and Lead Acid will be out of the storage business. So all the storage devices like Inverters, UPS, Solar inverters, Lift inverters/UPS, Energy Storage Systems etc., where the Lead Acid battery like Tubular, VRLA, Gel etc., will be replaced by the Lithium battery in future.https://suvastika.com/the-lithium-battery-technology-is-going-to-change-the-battery-storage-solutions/
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