11SC 20K-50KVA-S20 AC Voltage Stabilizer

· Main Control PCB adopts SMT patch process.

· 3 phase regulated independently, contactless, no abrasion, maintenance free.

· LCD screen display, easy setup with menu button.

· Response time ≤40ms, can be applied to any load.

· Overload, Under/Over Voltage, Short Circuit, Bypass protection.

· Remote control(Optional)

The No-Battery Fix for Dirty Grid Power

You know the pattern. The grid doesn't black out. It just misbehaves. Every time the factory down the road starts its big press, your lights dim for half a second. When the air conditioner kicks in at the office, the CNC machine throws a fault. Your voltage sags to 190V, then surges to 250V, and none of your equipment is getting the steady 220V it was designed for. Slowly, over months, those swings are cooking power supplies, wearing out motor windings, and corrupting data on your control systems.

A UPS would help, but you don't need batteries. You don't need backup runtime. What you need is someone to grab that swinging voltage by the throat and hold it steady. That's exactly what the 11SC Series does. It's a three-phase AC voltage stabilizer that takes messy, wandering input and delivers clean, regulated output—without a single battery cell in sight.

Real-Time Correction, No Switching Delays

The 11SC isn't a tap-changer that clunks between voltage steps. It's a continuously acting, contactless stabilizer with a response time of ≤40ms. In plain terms, it catches sags and surges almost as they happen, adjusting the output faster than most equipment can register the disturbance. Your motors, compressors, and control electronics see stable voltage even while the grid is having a tantrum. There's no battery to wear out, no inverter to maintain. Just a solid-state power conditioner that runs for years without attention.

Each Phase Gets Its Own Regulator

In a three‑phase system, the phases rarely misbehave equally. L1 might drop to 180V while L3 is sitting at 260V. A stabilizer that only monitors average voltage would let both problems slide. The 11SC regulates each phase independently. If one leg goes low, that phase gets boosted. If another runs high, it gets bucked. No cross-talk, no compromise. That matters enormously when you're running a mix of single-phase and three-phase loads—maybe a 230V motor on one circuit, a 115V control system on another, and a 400V compressor across all three. Each gets the voltage it needs, regardless of what the others are doing.

No Carbon Brushes, No Servos, No Maintenance

Older voltage stabilizers use mechanical servo motors and carbon brushes to vary a transformer tap. Those parts wear. Brushes need replacing, servos jam, and the whole thing demands periodic maintenance. The 11SC takes a different approach. It's fully contactless in its regulation stage—no moving parts in the power path. There's nothing to abrade, nothing to lubricate, nothing to adjust. You install it on the wall or floor, connect the input and output, and forget about it. The design is inherently low-maintenance, which makes it a favourite in remote pumping stations, rooftop HVAC plant rooms, and factory corners where nobody wants to climb a ladder with a multimeter.

Built on a Modern SMT Platform

Inside, the main control board is manufactured with surface-mount technology (SMT). That's the same modern production process used in servers and telecom gear. It means compact layout, better resistance to vibration, and fewer points of failure compared to old-school through-hole boards. Combined with the contactless regulation, the 11SC is engineered for a long, boring service life—exactly what you want from a device whose whole job is to sit there and be reliable.

LCD Interface That Doesn't Need a Manual

You don't configure the 11SC with DIP switches or cryptic jumpers. It has a front-panel LCD with simple menu buttons. You can check input voltage per phase, output voltage per phase, load percentage, and alarm status at a glance. If you need to adjust protection thresholds or set the bypass behaviour, you do it through the screen. No laptop, no special software, no power engineering degree required. For the electrician who has to commission it on a Friday afternoon, that's a genuine time-saver.

Protections That Keep Your Loads Running

The 11SC watches for trouble on both the input and output sides. Overload protection, under-voltage and over-voltage limits, short-circuit detection—all standard. If a fault condition exceeds the stabilizer's correction range, the unit can automatically switch to bypass mode. That means your equipment continues to run on raw utility power rather than shutting down. When the grid returns to a stable window, the stabilizer re-engages automatically. You get protection when it's possible, and passthrough when it's not—no interruption, no manual reset.

Optional Remote Control for Hard-to-Reach Locations

If your stabilizer is mounted in a basement, on a mezzanine, or in a locked electrical room, you can add the optional remote control panel. It gives you a duplicate of the essential status indicators and alarm contacts at a convenient location. For a facility manager who oversees multiple buildings, that means you can check the health of the stabilizer without doing a site walk.

Where the 11SC Proves Its Worth

The 11SC Series fits anywhere three-phase equipment needs stable voltage but doesn't need battery backup. Common installations:

`Factories and production lines with CNC machines, lathes, and milling centres that fault on under-voltage

`Commercial buildings with HVAC chillers, lifts, and large air-handling units

`Farms running irrigation pumps, grain dryers, and cold storage compressors

`Remote water pumping stations where voltage drops over long cable runs

`Industrial bakeries, plastics extruders, and packaging lines where process heating elements need consistent power

`Any site where the utility voltage routinely sags or surges but rarely blacks out

In all these cases, the cost of a full UPS system—batteries, inverter, maintenance—is hard to justify. You don't need runtime. You just need clean, steady voltage. The 11SC delivers exactly that, at a fraction of the cost and with none of the ongoing battery maintenance.

The Practical Alternative

The 11SC Series AC Voltage Stabilizer doesn't try to do everything. It doesn't store energy, it doesn't provide backup during a blackout. What it does, it does relentlessly well: it takes lousy grid power and turns it into the kind of stable, predictable voltage that industrial equipment was designed to run on. No contactors to wear out, no batteries to replace, no software to update. Just a rugged, three-phase power conditioner that gets wired in and gets on with the job. If your grid is dirty but present, this is the box that cleans it up.