PowerKavach for Manufacturing Units & Housing Societies: Stop Voltage Spikes Before They Destroy Your Equipment

A factory supervisor hears a loud pop from the control panel. Down the road, a housing society’s common-area lights flare bright, flicker and die. In both places, the power never went out. In fact, the opposite happened: too much voltage arrived all at once.

This is one of the most expensive and least understood power problems in India. It doesn’t make headlines like a blackout, but it quietly destroys UPS units, solar inverters, EV chargers, control panels, CCTV systems and appliances. In some cases it also creates a real fire risk. In this guide, we explain what causes it, and how PowerKavach helps manufacturing units and housing societies protect their equipment.

The Hidden Problem: Neutral Failure and Voltage Spikes

Most people think power problems mean outages. But a serious share of equipment damage comes from overvoltage, and one of the biggest causes is a neutral failure.

Here is the simple version. In a three-phase supply, the neutral wire balances the load across the phases. If that neutral breaks, loosens or corrodes (at the transformer, on the pole, in a service cable or in your own panel), single-phase equipment connected to that circuit no longer receives a stable 230V. Voltage on one phase can climb towards the 400V-plus range between phases, while another may sag.

In practice, this means:

• A sudden jump from 230V to around 440V on a single-phase circuit.
• Instant damage to electronics, power supplies, drives, chargers and appliances.
• Overheating and fire hazards in wiring, plugs and equipment.
• No warning, and usually no protection in a standard installation.

The cost is not just the damaged equipment. It is the downtime, the replacement lead time and the safety risk.

What Is PowerKavach?

PowerKavach is an equipment-level voltage protection device from Martech, designed to shield sensitive loads from dangerous voltage conditions. According to Martech’s product listing, its key features include:

• Withstands 440V for up to 24 hours, so a neutral failure does not instantly destroy what it protects.
• 160kA surge absorption to handle voltage spikes.
• Lightning protection in the Plus model.
• Under-voltage and over-voltage cutoff, which disconnects the load when the supply goes out of safe limits.
• Phase loss protection, which matters on three-phase equipment.
• Automatic reset, so equipment is reconnected once the supply returns to normal, without anyone visiting the panel.

It is built for sensitive equipment such as UPS systems, solar inverters, ATMs and EV chargers. Think of it as a bodyguard that stands directly in front of your most valuable and most vulnerable equipment.

You can see the product in our Electrical Fire Protection range.

PowerKavach vs Equipower: Equipment Protector vs Mainline Protector

Martech offers two complementary protection devices, and it helps to know the difference:

• PowerKavach (equipment protector): installed at or near the equipment you want to protect, such as a UPS, inverter, charger or sensitive machine.
• Equipower (mainline protector): installed at the incoming supply to protect an entire home, office or commercial building. According to Martech’s listing, it is available in single-phase and three-phase models from 16A to 160A, withstands 440V for 24 hours, cuts off the supply beyond 270V, restores power safely after a delay and absorbs surges up to 40kA.

Many premises use both: a mainline protector at the entry point and equipment protectors for the most critical loads. Our team can help you decide the best combination after looking at your installation.

Where PowerKavach Makes Sense in Manufacturing Units

Factories have plenty of single-phase electronics hanging off a three-phase supply, and these are exactly the loads that suffer during a neutral fault. Typical candidates include:

• UPS systems: protecting the UPS input means the unit you bought to protect the plant is not the first thing to fail. See our UPS options.
• PLC and control panels, HMIs and SCADA workstations: the brains of the line.
• Laboratory and testing equipment: expensive, calibrated and hard to replace quickly.
• Solar inverters and EV chargers: increasingly common on factory roofs and in parking areas.
• Server and network cabins: where one damaged power supply can take down plant connectivity.
• Admin, canteen and security systems: CCTV, access control and billing systems.

How It Fits With Your UPS

A UPS and a voltage protector solve different problems. The UPS keeps equipment running during an outage and conditions power. The protector guards against dangerous overvoltage and surges at the supply side. Together, they form a layered defence. For plant-wide backup, explore our APC and Schneider Electric three-phase UPS range, or smaller units such as the APC SRV6KUXI-IN 6kVA Online UPS.

Where PowerKavach Makes Sense in Housing Societies

Housing societies share one more challenge: a large number of residents depend on common systems, and a single fault affects everyone. A voltage spike in a society can damage:

• Common-area and street lighting and their control circuits.
• Water pump controls and motor starters.
• CCTV, access control, intercom and video door phones.
• EV charging points that are becoming standard in new societies.
• Rooftop solar inverters supplying common areas.
• Clubhouse, gym and pool equipment.
• UPS and battery-backed systems used for security and communication.

For a society, the benefit is practical. Fewer breakdowns mean fewer complaints, lower repair bills from the maintenance fund and a safer building. For loads such as lifts and heavy motors, ask our team which protection is suitable, since the right device depends on the equipment and its supply.

How to Choose the Right Protection: 5 Quick Steps

1. Identify what you are protecting: list sensitive equipment and note whether it runs on single-phase or three-phase supply.
2. Check the load rating: protection devices are chosen by the load’s rating (in kVA or amps), so keep the nameplate details handy.
3. Decide point-of-use or mainline protection: equipment protectors for specific critical loads, mainline protectors for the whole premises, or both.
4. Check your earthing and wiring: a protector works best on a sound electrical system. A loose neutral connection inside your own panel is a fault waiting to happen.
5. Book an inspection: a power audit identifies weak points such as poor grounding, unbalanced phases and missing surge protection.

Install It Right and Keep It Working

Protection devices should be installed by a qualified electrician or service engineer, following the manufacturer’s instructions. After installation, treat it like any other safety device:

• Check the status indicators during routine rounds.
• Include it in your maintenance schedule through a UPS AMC or facility maintenance plan.
• Keep a simple log of any trips or alarms, since repeated events point to a supply problem worth fixing at the source.
• Revisit your setup after adding new machinery, solar panels or EV chargers.

Why Martech?

Martech Info Systems has been serving businesses since 1996, which means more than 30 years of experience in power and IT infrastructure. We are an ISO 9001-certified company and an authorised sales and service provider for Schneider Electric (APC and Luminous). Our partnerships with global brands, combined with PAN India service, mean you get advice, installation and support from one team. Learn more about us, or read our guide on APC and Schneider Electric solutions for manufacturing units.

Frequently Asked Questions

What is a neutral failure?

It is a break or loose connection in the neutral conductor of a three-phase supply. When it happens, single-phase equipment can receive voltage far above the normal 230V, sometimes close to 440V, which can damage electronics and create a fire risk.

Does a UPS protect against neutral failure?

Not necessarily. A UPS handles outages and a range of voltage variations, but its input can still be stressed by extreme overvoltage. Check the input voltage range of your UPS, and consider a protection device at the supply side.

Is PowerKavach a replacement for a voltage stabiliser?

No. A stabiliser corrects normal voltage variation, while PowerKavach is designed to protect equipment from dangerous conditions such as 440V events, surges and phase loss. They serve different purposes.

Can PowerKavach protect against lightning?

The Plus model includes lightning protection according to Martech’s listing. However, no device can guarantee protection against a direct lightning strike, so proper earthing and lightning arrestors remain important.

Can a housing society install it?

Yes. Societies can install it on common-area equipment with the help of a qualified electrician. Contact our team to choose the right rating.