In an electric power system, submersible switchgear is the special combination of electrical disconnect switches, fuses or circuit breakers used to control, protect and isolate electrical equipment all enclosed in a “vault-like” casing to prevent flooding damage. Submersible switchgear is used both to de-energize equipment to allow work to be done and to clear faults downstream. This type of equipment is important because it operates in the same way as other forms of switchgear and is directly linked to the reliability of the electricity supply.
A variety of interrupting devices can be used with vaulted submersible switches including fuses, air circuit breaker, oil circuit breaker, vacuum circuit breaker or gas (SF6) circuit breaker.
Newton-Evans has estimated the 2017 U.S. market for submersible switchgear to have been about $140-$155 Million – and growing at about 5% per year, a rate somewhat higher than other MV market segments for electric power infrastructure equipment.
Continue reading The U.S. Submersible Medium Voltage Switchgear Market