Colossal 3P 30 KVA Solar PCU: a patented three-phase power plant — sized for the clinic and the workshop

The Colossal 3P 30 KVA / 360V Solar PCU is part of the same three-phase Colossal family as our 40 KVA and 80 KVA machines — the right-sized member for a busy clinic, a dental practice or a small workshop that needs serious, clean, solar-first power.

1 A patented three-phase Solar PCU

This is a true Power Conditioning Unit, protected by Indian Patent No. 2651/DEL/2007 — part of the three-phase technology an Indian company built first. When the grid is present, it does two jobs at once: it runs your active load and charges the battery bank simultaneously. When the grid fails, it switches automatically and runs all your three-phase loads on battery, without a flicker.

2 How it is built

The power comes from a substantial battery bank: 30 batteries in series, each a 150 Ah / 12V (1.8 kWh) module — a 360V bank holding around 54 kWh of energy. The PCU sits between the grid, the solar array and that bank, deciding intelligently which source should feed the load and when the battery should charge. One floor-standing machine, behaving like a small private power station.

3 What 30 KVA can actually run

A single Colossal 3P 30 KVA can carry an entire clinic or shop floor — for example, any one of these (plus baseline equipment):

4 Solar, built in

The unit has native solar readiness, so through the day it leans on free solar energy to run the load and replenish the battery before it ever touches the grid. It connects to the array through a dedicated Solar Charge Controller, configured with 15 panels in series across 8 parallel rows of 250W / 24V panels — that is 120 panels, roughly a 30 kW solar field feeding the machine. Every unit the sun provides is a unit you do not buy from the grid or burn as diesel.

5 The core capabilities

6 Part of a family that went around the world

The 30 KVA is one rung on a ladder that runs from this unit up through the 40 KVA to the 80 KVA — the same patented three-phase technology, scaled to the job. These machines became one of our proudest exports, going out across Africa and the Middle East, to places where the public grid is more a hope than a guarantee. Su-Kam went on to supply power-backup products to more than 70 countries — and a solar-first three-phase PCU was exactly the kind of machine that earns its keep where electricity is scarce. You can read the human side of how we built this in our profiles of Vikas Garg and CTO Sivarajan Ramachandran.

7 The next step: Solar Online UPS Intelli S 30 KVA

From a patented three-phase Solar PCU to a fully galvanically-isolated online UPS — this is the range we built so that an Indian clinic, workshop or fuel station never had to choose between clean power and reliable power. You can read the wider story in our pieces on how Su-Kam turned the inverter into a solar power plant and why efficiency standards still matter. — Kunwer Sachdev

8 A note from me — it sold like a hot cake

I will be honest about this machine, because the honest version is the better story. When we first put the 30 KVA on the test bench, it fought us. A three-phase PCU that has to run the load, charge a 360V bank and juggle solar all at the same time is not a simple box — and in those early weeks we hit hiccup after hiccup. There were nights when the team and I stood around a unit that simply would not behave, arguing about whether the trouble sat in the charging logic, the static bypass or the solar handover.

We refused to ship it until it was right. We chased every fault, re-tested, and re-tested again. And once we cracked it, the market answered in a way that still makes me smile — this product sold like a hot cake. Word travelled fast among clinics, dental setups and small workshops: here was an Indian three-phase machine that took free solar first, switched to battery without a flicker, and sat silently in the corner of the room. The early hiccups were forgotten; the orders just kept coming.