1617068-8

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1617068-8, A secondary protection device specifically designed for traction converters, mainly used for rail vehicles, can also be used for various occasions with input and output short circuit protection requirements. It has the characteristics of wide working frequency range, small footprint, high protection speed, and reliable protection.

Application Field

1617068-8 is mainly used for short circuit protection of traction converters in rail vehicles. In the substation, the traction converter is divided into two parts, the rectifying unit, which is used for DC conversion, and the inverter unit, which is used for AC conversion. Different types of traction converters need input and output short circuit protection for a better power conversion effect, and 1617068-8 can provide an effective solution.

In addition to railway sub-stations, 1617068-8 can also be used in other occasions with input and output of short circuit protection requirements, Widely adopted in industrial products, uninterruptible power supply, electric power grid and other fields.

Working Principle

The working principle of the 1617068-8 is based on an inductive voltage drop circuit. The two thyristors are connected in series and connected to the load end in parallel. When the input fault is short circuited, the voltage on the load side will rise rapidly, and the current on the thyristor will also increase. When the current exceeds the threshold of tripping, the thyristor will conduct and the device will release the fault quickly.

The 1617068-8 also has an automatic reset circuit, which uses a time delay when the fault is released to ensure that the short circuit time is within the safety range. After the fault is released and the delay time reaches the set time, if the fault is not restored, the thyristor will be cut off and the device will reset automatically.

Conclusion

1617068-8 is a secondary protection device specially designed for traction converters. It is mainly used for short circuit protection of traction converters in railway sub-station, and can also be used in other occasions with input and output of short circuit protection requirements. The working principle of 1617068-8 is based on an inductive voltage drop circuit, which effectively solves the short circuit problem of the traction converter and ensures the power conversion effect. In addition, it also has the characteristics of wide working frequency range, small footprint, high protection speed and reliable protection.

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