Technical Deep Dives
ERD Technology Explained
Inside the engineering that makes zero-break lift backup possible — IGBT switching, bi-directional power architecture, solar integration, and IoT monitoring. Written for engineers, not marketing teams.
Why 3 Milliseconds Changes Everything
A standard ARD reacts to failure in 20–30 seconds. An ERD switches in under one AC cycle — 3ms at 50Hz. The motor never sees a power interruption. Here's the physics.
Inside the IGBT Inverter — How It Works
IGBT (Insulated Gate Bipolar Transistor) switching delivers clean 3-phase pure sine wave output with sub-cycle response. Why IGBT replaced relay-based switching in ERDs.
Bi-Directional Power Architecture — The Patent
Su-vastika's patented bi-directional power flow allows the ERD to simultaneously accept grid input, charge batteries, and supply the lift motor. How it differs from standard UPS.
GSM / WiFi Monitoring — Real-Time Lift Intelligence
Su-vastika's patented monitoring system tracks ERD uptime, battery health, fault logs, and lift movement. Automatic complaint logging, remote diagnostics, digital warranty.
Solar-Powered ERD — Run Your Lift on Sunlight
Patented green-energy integration. Run your lift on grid, solar, or both — seamlessly. HAREDA mandates solar-capable ERDs for all new Haryana installations.