Active internal arc-fault protection — protection in under 3 milliseconds
The VAMOCON 5000 system can be equipped up to the highest protection level: Internal Arc-Fault Mitigation System (Arcing Class C) extinguishes an internal arc fault in under 3 ms, at a maximum permissible short-circuit current under arcing conditions of up to 100 kA.
The system monitors the assembly even when the cubicle door is open, providing the greatest possible protection for personnel working on it. After an event, the assembly is available again within a short time.
Passive internal arc-fault protection (Class A / B) is available as an alternative: Ip arc up to 80 kA, arc duration 300 ms.
High short-circuit withstand strength
The VAMOCON 5000 system is designed for networks with high short-circuit capacities. This means the assembly also safely withstands the high dynamic and thermal loads of a short circuit, a decisive factor for infeeds and main distribution boards in industry and large commercial buildings. All values are substantiated by independent design verification tests: temperature-rise and short-circuit tests are carried out with switching devices installed.
Plug-in modules for moulded case circuit-breakers
Plug-in modules for moulded case circuit-breakers are available for outgoing feeders from 160 to 630 A, as a removable part to DIN EN IEC 61439-2 and finger-safe all round (IPXXB). This significantly increases operator safety: insertion and removal take place only in a load-free condition, via an integrated forced release. The modules can also be replaced under voltage, so the assembly stays flexible and available without whole cubicles having to be isolated. The plug-in modules are short-circuit resistant up to Icc 100 kA.
Couplers
In VAMOCON, couplers are integrated longitudinally into the central main busbar system and routed in from the right and left, phase-shifted, at the height of the switch connectors. The spacing between the front and rear busbar runs, together with mutual support, makes this design possible and stiffens it at the same time, for a mechanically robust, durable build. The longitudinal couplers are tested up to a short-circuit withstand current (Icw) of 100 kA for one second, so they also safely withstand high short-circuit loads. Your benefit in practice: no elaborate busbar risers and droppers are needed, and no second cubicle. That saves space, effort and around 120 kg of copper per cubicle compared with a conventional coupler (at 3,200 A rated current). The couplers are available up to 5,000 A for 3- and 4-pole main busbar systems.