STG Heating Pvt. Ltd.

Component For Electronic System Protection

The importance of electronic systems protection

Electronic systems have become central to virtually every aspect of our lives from PCs and building management systems in the office to automated petrol pumps and barcode scanners at the supermarket.

The ever-changing pace of technological development, and especially the headlong quest for miniaturization, has created the scenario where increasingly lightning sensitive systems are placed at the core of our society.

Both the threat of damage to vital electronic systems, and the seriousness of the consequences of that damage, are more real than ever before.

Most modern electronic systems are at risk:


Data communication networks

Building management systems

PABX telephone exchanges

CCTV equipment

Fire and burglar alarms

Telecom base stations

Uninterruptible power supplies (UPSs)

Programmable logic controllers (PLCs)

Plant sensors

Telemetry and data acquisition equipment

Loss of these systems would cripple industrial, commercial and government organization alike.

The importance of electronic systems protection, often referred to as surge protection, is now defined in many standards, including BS EN/IEC and BS 7671.

Indeed, BS EN/iec 62305 requires integrated structural and surge protection. In effect structural lightning protection can no longer be considered in isolation to the protection of electronic systems.

Transient overvoltage’s  

 The main risk to internal systems is through transient overvolatges - large. Very brief and potentially destructive increases in voltage within the electrical system.

 Transient overvolatges can be caused by:

The secondary effects of the lightning strikes (either between clouds or to ground) from a kilometer or more, away, from lightning energy induced on to above or below ground power, data and signal lines.

The electrical switching of large inductive loads (such as motors, transformers and electrical drives), or capacitive loads (such as power factor correction)

Devastating effects

Transient overvolatges can reach magnitudes of up to 6000 volts in a well-insulated 230/400 V power distribution system, over eight times the levels tolerated by many electronic system.

Although lasting only thousandths or millionths of a second, without protection they can devastate modern electronic systems.

Disrupting system operations, through data loss, data and software corruption and unexplained crashes

Degrading equipment components and circuitry, shortening equipment lifetime and increasing failures

Destroying components, circuit boards and I/O cards

Causing costly and unnecessary system downtime

 Protection benefits

Effective transient overvolatge protection can prevent:

Lost or destroyed data

Equipment damage

Repair work - especially costly for remote or unmanned installations

The high cost of extended stoppages - sales lost to competitors, lost production, deterioration or spoilage of work in progress

Loss of essential services - fire alarm, security system, building management system

Health and safety hazards caused by plant instability, after loss of control

Fire risk and electric shock hazards

Effective protection is achieved through installation of a coordinataed set of Furse surge protective Devices (SPDs), covering incoming/outgoing mains and data lines and protecting sensitive and critical electronic system from damage.