Chapter 3 · 2002–2008

The Inventions — the products that changed the market

A shock on a rainy day, the CHIC, the Fairy Queen, the Home UPS, the world’s first touch-screen inverter — the firsts a whole industry copied.

Innovation at Su-Kam was never a department — it was the whole company, and it almost always began with a real human moment. A customer told me his young daughter had been shocked wiping the metal body of an inverter on a rainy day. I couldn’t rewire every Indian home, so I decided to rewire the product: I would build it in plastic. My own R&D fought me — plastic can’t take the heat, they said — so we engineered a temperature sensor and a dozen safeguards, and with GE Plastics we made the CHIC in 2003: India’s first plastic-body inverter, in a PC-ABS that shrugged off 120°C. India Today called it the “Innovation of the Decade.” Some families used theirs for more than twenty years. I named it “Chic” because I wanted an inverter people were proud to display, not hide in a corner.

Not everything I loved survived. The Fairy Queen — a plastic inverter shaped like a heritage locomotive, made to sit proudly in a bedroom — was one of the most beautiful things we ever built, and it died on its very first shipment: the packaging failed and units reached dealers in pieces. A small, careless detail shattered a dream we never managed to revive. The lesson never left me — trust your team, but never take your eyes off the details that matter.

But the firsts kept coming, each one solving a real Indian problem. India’s first DSP sine-wave inverter in 2002. The Trendy — the first Indian inverter with a digital display. India’s first 5 KVA and 10 KVA home inverters, built to take on the diesel generator. The first Solar Online UPS and the first grid-feed hybrid inverter. The world’s first touch-screen, Bluetooth-enabled inverter you could watch from your phone. And the range scaled all the way up — to the 100 KVA Colossal, an inverter we turned into a full-blown solar power plant for factories and large institutions. We pioneered LED status indications, SMD-based boards, our own in-house battery testers, and even an aluminium-transformer design to cut cost without cutting quality. And we created an entire category: in 2005 we coined the “Home UPS” — within a year the whole industry was using our word.

“I didn’t want to build an appliance people merely tolerated. I wanted to build one a family would be proud to keep in their home.”

The CHIC — India’s first plastic-body inverter, India Today’s “Innovation of the Decade.”
The CHIC — India’s first plastic-body inverter, India Today’s “Innovation of the Decade.”
The Fairy Queen — beautiful, beloved, and undone by its packaging.
The Fairy Queen — beautiful, beloved, and undone by its packaging.
Trendy — the first Indian inverter with a digital display.
Trendy — the first Indian inverter with a digital display.
Engineering you could see through.
Engineering you could see through.
Falcon — high-frequency inverter, patented plastic body.
Falcon — high-frequency inverter, patented plastic body.
Brainy Eco — the intelligent solar home inverter.
Brainy Eco — the intelligent solar home inverter.
Intelli S — India’s first Solar Online UPS.
Intelli S — India’s first Solar Online UPS.
The 100 KVA Colossal — an inverter turned into a full solar power plant.
The 100 KVA Colossal — an inverter turned into a full solar power plant.
Brainy Hybrid-GTI — grid-tie, using 100% of your solar.
Brainy Hybrid-GTI — grid-tie, using 100% of your solar.
India’s first DSP-based high-voltage MPPT solar charge controller.
India’s first DSP-based high-voltage MPPT solar charge controller.
48V Battery Equalizer — longer life for battery banks.
48V Battery Equalizer — longer life for battery banks.
Sun Way — solar street light with GSM remote control.
Sun Way — solar street light with GSM remote control.

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Kunwer Sachdev exited Su-Kam in 2019 and is not responsible for any activity of the company since. Anyone dealing with Su-Kam does so solely with its current management. Full disclaimer →