Siemens SIQuench arc quenching device

Why SIQuench?

SIQuench is an active arc protection system that mitigates arc effects by quenching an internal arc in sub-cycle times. This minimizes equipment damage and service outages, reducing repair costs and downtime for operations. The reusable, maintenance-free system provides proactive safety measures that go beyond the safety set by the standards, improving process availability and protecting assets.

Key benefits

Performing consistently and reliably

You can count on continuous self-monitoring that alerts you to any faulty conditions. The system also supports up to 30 no-load switching operations for testing and commissioning purposes, with no need for replacement.

Surpassing safety norms

The SIQuench doesn’t use an explosive medium, surpassing safety standards. It enhances maintenance safety and prevents toxic gas emissions from internal arc faults that can cause severe respiratory distress.

Reducing your recurring operational costs

The SIQuench minimizes repair costs with reusable faulty units, protects surroundings from contamination eliminating cleaning expenses, switches five times without replacement, and requires no maintenance for 20 years.

Featured Capabilities

A person is standing in front of a large screen displaying a digital interface with various icons and text.

Arc flash protection

An arc protection relay rapidly and reliably detects the ignition of an internal arc and sends a trip signal to the main circuit-breaker and a trigger signal to the controller of the SIQuench.

Arc light pointing sensor

Each high voltage compartment of the switchgear is equipped with light point sensors with a light sensitive photodiode element activated by arc light. This enables a quick and accurate location of the faulted area.

Arc extinguishers

It can extinguish the arc fault in less than 5 ms from arc ignition to the closing of the quenching device. This is long before the pressure peak and before the arc can cause any significant damage.