Page 5 - SGC SwitchGear Company

2. COMPARTMENTS

2.1. SWITCHGEAR COMPARTMENT

In this compartment, the withdrawable magnetic “vacuum” driven circuit breaker switch,
acts as the physical separation between the busbar set and the cable compartment. The
switch has two functions: it connects or interrupts the electrical current between the high
voltage cables and the busbar.

2.2. BUSBAR COMPARTMENT

The busbar compartment is located at the back side of the cubicle and behind the low-
voltage compartment. The modular busbar set is manufactured from specially provided
electrolyte F25 copper. Several cubicles are connected through the bar set compart-
ments. Hexagonal bolts connect the busbars to the upper contact surfaces of the fixed
contacts in the insulators.

2.3. CABLE COMPARTMENT

The cable compartment is located behind the interlocked, removable door of the DW-2
cubicle. This part of the field receives the cable(s) and contains the necessary equip-
ment to connect the cable(s). The earthing switch is installed below the circuitbreaker
switch on the back side, ensuring a “visible earthing” when the earthing switch is closed.
The door, the sectional floor panels, which house the necessary conductive rubber for
the cables, and the cable supports, all simplify the cable connection.

2.4. LOW-VOLTAGE COMPARTMENT

The protection relay that controls the circuit breaker and accessories, such as the auxil-
iary contacts, and minimum voltage relays, are also located in this compartment. Any en-
gine control with the necessary electrical switchgear, a control and clamp strip are also
installed in this compartment. The compartment can be accessed very easily by opening
the compartment door.

Internal arc fault test, 31.5kA/1s

THE SPECIALIST IN MEDIUM VOLTAGE SWITCHGEAR BUILT TO LAST 5