Cabinets of factory-assembled switch-gears of KRUN-12 دد designed for installation outdoors are intended for the intake and distribution of electric energy of three-phase 6-10 kV AC, 50 Hz and are used for supplying power and protecting electrical equipment of big electricity consumers located in quarries in switch systems and also for switching on outdoor illumination.

Brief Specifications.

Rated line voltage, kV : 6,10
Maximum operating line voltage, kV: 7,2; 12
Rated current of main circuits, A: 630, 1000; 1600
Voltage of auxiliary circuits, V220
Overall dimensions, mm
-width: 1000
-depth: 1230
-height: 4900
Slide: 2600*2600
Mass, kg: 1000

Cabinet Design.

- KRUN-12PP is essentially a welded body manufactured of sheet metal with unitized devices inside;
- KRUN-12PP is installed on the frame slide;
- KRUN-12PP is designed with vacuum switch.

Auxiliary Circuits.

Auxiliary circuits of the cubicles provide:
- protection of electric equipment and cable line under emergency conditions;
- measuring of current and voltage;
- registering of expenditure of electric power;
- operating of the installed switch;
- signaling of the switch position and about emergent non-normal regimes;
- external and internal illuminations;
- heating of the cabinet;
- testing protection from closures on the "ground"

Type of Protection.

The circuit performs the following types of protection:

- maximum current protection;
- protection from closures on the "ground"
- protection of the minimum voltage;
- protection from interrupting the integrity of grounding strands of cables.