The definition of a ‘transient’ or ‘spike’ is a temporary excess of voltage and current on an electrical circuit which has been disturbed in some way.
They can also be defined as a change in the fundamental (50Hz/60Hz) frequency. A transient ‘surge’ can contain thousands of volts and thousands of amperes with duration of nanoseconds to microseconds.
Transients voltages can be due to lightning, faulty power factor correction switching or faults and other disturbances on the power line, for example. Continuous voltage spikes can also be caused by the interaction between DC SCR drive line notching and stray cable and other capacitance in the system.
Whatever the cause, transient voltages can have a devastating effect of unprotected electronic equipment, especially exposed equipment containing capacitors in their input circuitry including small variable frequency drives (VFDs), fluorescent lighting and switched mode power supply capacitors.
The results are usually spurious tripping at best or total destruction with all the operational downtime which can result from such failures. Motor winding insulation can also be stresses due to excessive transient voltages.
Sinetamer is a type of TVSS (transient voltage surge suppression) device specifically designed to protect switchboards and AC VFD and DC SCR drive. It is widely used worldwide including in the petro-chemical industries.
Sinetamer encompasses the development of a fourth generation technology for surge and transient voltage protection. Sinetamer is a lot more than a typical lightning arrestor which can be found in electrical panels worldwide. It is an engineered solution, specifically designed for the ultra sensitive nature of electronic circuit boards (such as those used in VFDs, UPSs and PLCs) plus all variations of microprocessor based control systems.
Sinetamer has an existing range of 80,000 different devices and a customer-centric engineering team to assure the most equitable solution. Their engineering team has spent more than 25 years studying electrical anomalies which create most disruption and cumulative damage to microprocessor based equipment.
The results of exhaustive studies has established that the unique technology incorporated into Sinetamer can attenuate or eliminate up to 80% of the causes of electrical/electronic failures due to transient voltages experience around the world.
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