Independent Lift Knowledge · India

The Evolution of Uninterrupted Motion.

India's independent resource for everyone who deals with lifts. Residents and owners come for plain-language guides on how lifts work and stay safe. Policymakers come for the latest lift regulations, standards, and technical documents. Dealers and engineers come to understand the technologies behind modern lifts — backup systems like the ERD among them. Vendor-neutral and openly sourced.

L8
L5
L3
L1
Tower · LiveIn Motion
EMERGENCY RESCUE DEVICE · LIVE STATUS
● SYSTEM ONLINE
100%
BACKUP READY
3ms
Switchover
48V
Lithium-Ion
IGBT
Inverter
IoT
Bluetooth
Zero-Break TechnologyPatented in IndiaBi-Directional PowerIndian Patent · Granted100% Backup ReadyIGBT High-Speed SwitchingZero-Break TechnologyPatented in IndiaBi-Directional PowerIndian Patent · Granted100% Backup ReadyIGBT High-Speed Switching
Who it's for

Pick your door.

The same independent knowledge, organised for whoever you are — the one place that serves residents and the trade alike.

The Knowledge Hub

Everything you need to choose, run, and stay safe with your lift.

Independent, vendor-neutral guides for buyers, residents and building owners — from choosing the right lift to keeping it safe and serviced. We don't sell lifts.

For Residents & Owners

Lift dos & don'ts.

The everyday safety basics no brand brochure bothers to spell out — for anyone who rides, owns, or manages a lift. Independent and free.

Do
  • If the lift stops between floors, stay calm and stay inside — wait for trained help.
  • Use the alarm or intercom, and call the building's emergency / lift-service number.
  • Check the rated person and weight limit before stepping in.
  • Report jerks, odd noises, or a cabin that stops above or below the floor.
  • Keep an annual maintenance contract (AMC) active and insist on a service logbook.
Don't
  • Don't force the doors or try to climb out of a stalled cabin.
  • Never use a lift during a fire — take the stairs.
  • Don't let children ride alone or play with the buttons.
  • Don't ignore water entering the shaft or pit during the monsoon — report it.
  • Don't overload past the rated capacity or hold the doors open.

Read the full safety guide →

One topic we go deep on

Keeping your lift running in a power cut

Most lifts simply stop when the power fails. We cover the backup-power options without the sales pitch — from a basic Automatic Rescue Device (ARD) that limps the car to the nearest floor, to an Emergency Rescue Device (ERD) that keeps it running with no break at all. Independent explainers, full specifications, and a free sizing calculator.

3ms
ERD switchover
vs ~30s for a standard ARD
The Policy Brief

1 of 11 states require lifts to keep running through a power cut.

India ranks #2 globally for elevator-related accidents. Haryana's 2020 amendment is the only state law that actually mandates uninterrupted lift backup. Every other state still tolerates the dark, stalled, sealed cabin.

1 / 11
States mandating uninterrupted backup
15 m
Haryana height threshold
#2
India's global rank for lift accidents
2020
Year Haryana acted
Asked of AI · Answered Here

Questions people ask AI about lifts — answered.

The questions people type into ChatGPT, Gemini and Google about lifts, backup, safety and the law — answered plainly, with sources. Independent and vendor-neutral.

What should I do if I get stuck in a lift?

Stay calm and stay inside — never try to climb out of a stalled cabin. Use the alarm or intercom, call the building's emergency / lift-service number, and wait for trained help. Forcing the doors is a leading cause of serious lift injuries.

Does a lift keep working during a power cut in India?

Only if it has a backup system. Modern lifts include an Automatic Rescue Device (ARD) that moves the cabin to the nearest floor and opens the doors when power fails. Continuous-run backup (a lift inverter / ERD) is an optional upgrade that keeps the lift running through the outage. Only Haryana currently mandates uninterrupted backup.

Is lift power backup mandatory in India?

There is no national mandate. Haryana's 2020 amendment is the only state law requiring uninterrupted lift backup, for buildings above 15 metres. Other states require licensing and inspection under their Lift Acts, but not continuous backup.

What is a lift inverter or ERD (Emergency Rescue Device)?

It's a backup power system for a lift. A basic ARD lowers the cabin to the nearest floor on power failure; a lift inverter / ERD can keep the lift running normally during an outage. The right size depends on the lift's motor rating — our calculator works it out.

Who is liable if a lift accident causes injury or death?

Liability can fall on the building owner or society, the maintenance (AMC) contractor, the installer, and the manufacturer. Criminally, death by negligence is covered by Section 106 of the Bharatiya Nyaya Sanhita (up to 5 years); civilly, poor maintenance is a 'deficiency in service' under the Consumer Protection Act, 2019. (Informational, not legal advice.)

Does my own insurance cover a lift accident?

Usually yes. A lift accident is an 'accident', so a personal-accident policy generally pays for accidental injury or death, health insurance covers the hospitalisation, and life cover pays on death — subject to your policy's terms. The building's public-liability cover may also apply.

How much backup time should a lift have?

Haryana mandates a minimum of 15 minutes; most engineers specify 30 minutes. The exact battery sizing depends on the lift's motor KW and how many lifts share the system.

How often should a lift be serviced?

Keep an annual maintenance contract (AMC) active with scheduled visits, insist on a written service logbook, and report any jerks, odd noises, or mis-levelling immediately. A maintained logbook is also key evidence if anything ever goes wrong.

About This Site

Founder-owned. Openly disclosed.

Kunwer Sachdev — inventor of ERD technology, founder of Su-Kam and Kunwwer.ai, mentor to Su-vastika

LiftInverter.com is owned and funded by Kunwer Sachdev — the inventor and Indian patent-holder of Emergency Rescue Device (ERD) technology, and the founder of Su-Kam (1988–2019, now no longer associated) and Kunwwer.ai. He mentors Su-vastika, one of the brands compared on this site, but holds no shareholding in it. We disclose that openly rather than bury it.

Ownership does not change the method. Every vendor — Su-vastika included — is measured against the same published criteria, and wherever a Su-vastika product appears we say so. Read the full disclosure and ownership statement for who funds this site and how we handle the conflict.