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The Miba HPC (High Power Closer) and ICC (Industrial Crowbar Closer) are fast-acting switches. They are triggered by a short signal. After that, the bypass switches remain permanently activated even without ignition voltage. Continuous currents of several thousand amps are possible without any problems. And not just for short periods, but also for longer periods of time.
Large HV-DC systems are equipped with several power units. If a power unit fails unexpectedly, the Miba HPC bypass switch is activated. This then bridges the defective power unit. As a result, only this one power unit fails and the others remain in operation.
Miba HPC and ICC systems are used in the following applications:
We are happy to give you an overview!
The Miba HPC bypass switch closes in less than 1 ms and provides a permanent connection. It is used for fast and sustained performance in industrial applications:
HV-DC systems are used to transport electricity. For transport, the alternating voltage must be converted into direct current. Bypass switches are installed parallel to the individual power units. They are activated in a fraction of a second and remain permanently switched. This bypasses the defective power unit and the network of power units remains in operation.
The advantages of the Miba HPC bypass switch are:
· Fast activation (1 ms)
· Only 14 W is required for activation for a duration of 1 ms
· Permanent connection for currents up to 2500 amps
· Up to a maximum voltage resistance of 6.5 kV
In MW PV systems for generating renewable electricity, central inverters are often used to feed solar energy into the grid.
To protect the PV system in the event of a central inverter failure, for example if a power stage fails, the Miba ICC can be used in a crowbar circuit. The short-circuit switch can prevent reverse current from flowing from the grid to the PV system within a very short time.
Crowbars are used to protect against overvoltage. The Miba ICC short-circuit switch can also perform this task. If critical overvoltage levels are reached, the Miba ICC short-circuit switches are activated within 1 ms and remain permanently switched on.
The Miba HPC and ICC bypass switches can be customized as desired. The cable length and igniter contacts can be configured. The busbars can also be reconfigured.
Compared to other safety switches, the bypass switch from Miba is more cost-effective.
No, our pyrotechnic switch provides an irreversible switching operation. Once triggered, it is permanent without consuming any switching current.
The Miba HPC and ICC bypass switches are maintenance-free. We guarantee reliable tripping for up to 40 years.
Our switches are manufactured to strict safety standards and should be used in accordance with the instructions in the operating manual to ensure maximum safety.
Contact us today to find out more about our high-quality bypass switches and how you can use them to give your industrial applications the best possible protection!
