Introduction
Hilkar Compact RC Snubber filters protect electrical machines from damages caused by insulation failures which occur in windings of equipment like generators, reactors, motors and transformers where significant losses can be incurred unless certain protection measures are taken into consideration. Thus, implementation of RC snubbers (high frequency transient surge suppressors) as surge protection devices, significantly reduces the direct and indirect costs related to equipment repair and cessation of business activity. RC Snubbers mainly eliminate the associated switching transients which occur as a result of switchgear operation and significanly reduce the steep wave-front surges seen at the load terminals.
Advantages
- Save cost, via reduced downtime and repair costs
- Improve operational performances, as a result of reduction in production downtime
- Superior protection against interturn insulation failures
- Extended lifetime of motors/transformers
- Reduce the likelihood of pre-strike, re-strike, and re-ignition observed at circuit breakers
- Reduce the magnitude and rate of rise of voltage (RRRV) transients
- Ease of installation
Application Areas
- Power Generation
- Pulp and Paper Industry
- Petrochemical Industry
- Chemical Factories
- Surface and Underground Mining
- Water and Oil Pumping Stations
- Railway Applications
- Large Motors
- Arc furnaces
- and many other facilities using any kind of motors and/or transformers
Protections Provided
- Protection against all practical surge peaks and rise-times
- Withstands all the motor impulse voltage levels recommended by both CIGRE and IEEE
- Eliminating and damping of multiple pre/re-strike transients which occur during switchgear operation,
- Eliminates voltage doubling effects by cancelling refraction of surges by providing a matched cable terminating impedance and thus halving the magnitude of the surge,
- Eliminates higher harmonic current zeros through the breakers by disabling current reflection waveforms
Product Range
- Operating Voltage: Up to 36kV
- Compact size, up to 36 kV networks, all components (R+C+L) are contained in single case
- Impulse Withstand Voltage: Up to 200 kV BIL
- Variety of surge capacitance ratings depending on the site requirements and application type (ie, 0.1-2 µF)
- Variety of surge resistance ratings depending on the site requirements and application (ie, 1-200 ohm)
- Fully assembled, tested, and ready for interconnection