VB 12-24-36 Series Metal Enclosed Modular Cells

VB 12-24-36 Series Metal Enclosed Modular Cells

In medium voltage electrical distribution companies, products with modular structures are preferred due to their easy installation, expandability, and product variety. The flexible design and the production structure that offers project-specific solutions also support these preferences.

These products stand out with their secure usage and maintenance-free structures in areas with high human traffic, such as renewable energy plants, shopping malls, airports, hospitals, schools, and large residential complexes.

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Technical Specifications

Rated voltage kV 12 24 36
Rated lightning impulse withstand voltage kV 75 125 170
Rated network frequency withstand voltage(1 min.) kV 28 50 70
Rated frequency Hz 50 50 50
Internal arc rating AFL AFL AFL
Loss of service continuity class LSC2A LSC2A LSC2A
Compartment class PI PI PI
Rated short-term withstand current: earthing circuit kA -1 sec. 16 16 16
Rated short-term withstand current: main circuit kA -1 sec. 16 16 16
Compartment accessibility
LV breaker compartment accessible accessible acessible
Busbar compartment inaccessible inaccessible inaccessible
Cable compartment accessible accessible accessible
Degree of protection IP3X IP3X IP3X
Installation indoors indoors indoors
Operating temperature C° between -5 and +40 between -5 and +40 between -5 and +40
Main busbar system
Rated current A 630, 1250 630, 1250 630,1Z50
Rated short-term withstand current kA -1 sec. 16 16 16
Rated peak withstand current kA 40 40 40
Curcuit braker
Rated current A 630,1250 630,1250 650,1250
Rated short-circuit breaking current 16,20 kA 1620 1620 16, 20
Rated short-circuit closing current kA/peak 40,50 40,50 40, 50
Rated short-circuit withstand current 16 kA/rms-1 sec. 16 16 16
Class E1,M1,C2 E1,M1,C2 E1,M1,C2
Number of short-circuit current breakers 20 20
Auxiliary voltage V AC220-DC24/48/110 AC220-DC24/48/110 AC 220 – DC 24/48/110
Mechanism(braker)
Rated process series A 0 – 300 ms – C0 – 3 min. – C0 0 – 500 ms – C0 – 5 min. – C0 0 – 500 ms – C0 –   min. – C0
Class M1 Ml M1
Number of operations/ no load 2000 2000 2000