Sources of Switching Surges – Installation of SPDs
Lightning and lightning-induced surges are less common in western India than in eastern India. In addition, despite the installation of many types of protection mechanisms, such devices regularly fail. The only way to protect your equipment from these switching surges is to use proper SPD selection and installation techniques.
There are many sources of switching surges. Most common ones are listed below:
- High voltage switching from Utility side (Electricity Boards)
- Capacitor bank switching
- Welding
- Transfer from EB to DG & vice versa (there is no BUMPLESS transfer, practically)
- Transmission line switching
- CCVT — Coupling Capacitor Voltage Transformer
- GIS
- VIS
- Ground voltage differences
- CT
- Electro-mechanical equipment
- SCR
- Digital logic circuits (SMPS, Printers, unshielded cables viz flat ribbon cables)
- DC control circuits
- Mechanical vibration
- Chemical contamination
- ESD via human touch
- Cable resonance
- Reflections & travelling waves
- Power circuit in-rush currents
- Other incidental sources such as on load tap chargers, corona discharge from HV transmission lines etc.
Contact us for expert solution to protect your sensitive electronic equipment close to their MTBF levels against the disturbances caused by any one or combination of the above-mentioned sources.
Please let us know if you need further assistance or have any requirements: [email protected]
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