Design and Applications

The TRANSFORMER PROTECTOR (TP) has several configurations of protection, which mainly depend on transformer design and customer technical specifications. SERGI Transformer Protector focuses on offering a performant, affordable and compatible solution in order to ease its implementation without interfering with the current transformer design.

The TP can be installed on existing or new transformer from 0.1 to 1,000 MVA and above. Different design is proposed according to the transformer design and location.

The main TP components are, when applicable:

Tank Depressurization Set	Fitted on the transformer to ensure fast depressurization of the main tank. According to the transformer design, one of several sets are installed
OLTC Depressurization Set	Fitted on the On-Load Tap Changer (OLTC) to depressurize each of its compartments
Bushing turrets Depressurization Set	Fitted on the bushing turrets when transformer design requires, and manholes available, to ensure fast depressurization at this sensitive point
Oil Cable Boxes Depressurization Set	Fitted on each oil cable boxes to quickly depressurize the compartment in case of short-circuit
Oil & Gas Separation Tank	Allowing to separate the oil and the gas to: Prevent environment pollution Channel explosive gases in a safe area
TP cabinet	Ensuring effective explosive gases evacuation after TP activation
Control Box	Informing users about the TP passive and active operations

The favored design is Vertical Depressurization Set(s) with an Oil & Gas Separation Tank located on the side of the transformer to optimize installation cost and substation design.

The TP is used in:

Power Industry
- Generation: Hydro, Nuclear, Thermal, Wind, Solar, etc.
- Transmission: for all sub-stations including HVDC
- Distribution: distribution substations, underground transformers, etc.

Industries
- Steel
- Oil & Gas
- Mining
- Cement
- Food & Beverage

Sensitive areas related to potential injuries or leading to critical people evacuation
- Hospitals
- Underground transformers
- Building interiors
- Schools
- Parks
- Airports

Environmental area with oil leakage risk or wildfire risk
- Dry areas
- Near rivers
- Near seas
- Near lakes

Communities risk which can lead to brand image reputation or politics implication
- Highly sensitive plants, e.g. Seveso sites for the European regulation
- Plants having relation to Nuclear industries
- Fishing areas
- Classified sites
- Touristic areas