Optical Arc Detection for SIPROTEC 5
Arc protection module for SIPROTEC 5 devices
Electric arcs are among the most dreaded fault scenarios in power supply engineering. They can be caused by a multitude of factors, such as aging of the insulation, environmental conditions as well as operating errors. Electric arcs can cause heavy damage to switchgear and present a serious hazard to operating personnel.
The SIPROTEC 5 arc protection detects electric arcs through an optical sensor. Arcs are detected reliably and quickly as they develop, and the protective device can trip immediately and without delay times.
The arc protection module is part of the new SIPROTEC 5 series of modular, flexible and intelligent bay devices and can be used in the following device types:
Arc protection module
Point sensor 3 m
Point sensor 35 m
Line sensor 5 m
Line sensor 40 m
Supply line for line sensor 3 m
Supply line for line sensor 10 m
Additional sensor lengths can be found in our price list.
Immediate detection of arcs in air-insulated compartments of switchgears by optical sensors
Instantaneous trip in arc fault situations limits damage to switchgear
The arc protection system is suited for use at all voltage Levels.
Cross-section of an air insulated switchgear unitThe above figure shows a cross-section of an NXAIR switchgear unit. The point sensors (shown in blue) and their connection cables are placed in such a way that arcs in the busbar compartment, the circuit breaker compart-ment and the cable connection department are reliably detected.
Up to 3 optical point or line sensors can be connected per plug-in module, which means a total of up to 15 sensors on modular SIPROTEC 5 devices. Point sensors are available with connecting cable lengths -between 3 m and 35 m. Line sensors detect arcs along the whole sensor length. They are available from 5 m to 40 m. Line sensors are connected through a supply line to the arc protection module. The supply lines are available from 3 m to 10 m.
Exchangeable plug-in modulesDetection of arcs is either purely optical, or optionally using an additional current criterion to avoid overfunctioning.
Reliable arc detection
Extremely fast tripping time
Minimization of thermal damage
Higher personal safety
Minimization of downtimes
EMI safety thanks to purely optical sensors
Quick and easy retrofitting