TAVRIDA ELECTRIC Rec15/25 Al1 5p, User Manual, Page: 10 / 136

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1.1 Product Application Field
Reclosers can be applied in overhead distribution lines. The main applications are:

Clearing transient faults by performing autoreclosing;

Isolating sustained faults in the overhead line network;

Isolating sustained faults in a network where conventional protection coordination is not possible;

Automatic backfeed restoration.
The recloser can also be used at outdoor substations feeding overhead distribution lines for:

Substation outgoing feeder with autoreclosing functionality;

Substation busbar coupler with backfeed restoration capability;

Substation switchgear incoming feeder breaker with overcurrent protection for busbar faults, undervoltage
protection for backfeed restoration purposes and interfaces for transformer non-electrical protection.
1.2 Product Main Components
Outdoor Switching Module 1.2.1
The OSM is equipped with six high voltage bushings with embedded current and voltage sensors.
The bushings are covered by silicone rubber insulation and mount on the top of the tank and provide
500 mm (OSM15) or 860 mm (OSM25) creepage distance.
The bushings are marked with the terminal designation X1, X2 or X3 for the default source side and X4, X5
or X6 for the default load side. The source and load side can be reversed in the RC settings if required.
Figure 1
General arrangement of the OSM15_Al_1(5)
1.2.1.1 OSM Housing
The OSM tank is made of corrosion resistant anodized aluminum alloy. The tank is coated with light gray
RAL 7038 powder coating. Threaded holes (M12x30) on each side of the tank allow the application of
various kits and OSM installation on various poles and structures. These threaded holes can also be used to
install a set of lifting lugs on the tank. The earthing provision (M12x30 threaded hole) is labelled for
identification.