[dw_Liniensensor, 1, en_US]
Figure 6-95
Layout and Connection of the Optical Line Sensors (Operating Mode = Current and Light)
For this example, the following is assumed:
•
The current-flow criterion offers additional protection to prevent unwanted tripping caused by the
sudden effects of light.
•
Figure 6-95 shows how the optical line sensors should be routed. Start in the infeed busbar compartment
and route the optical line sensor along the busbar and back again to the protection device in the infeed.
Connect the optical line sensor to the protection device in the infeed.
•
Depending on the routing options in the control cabinet, you can also route the optical line sensor
through the circuit-breaker and cable-connection compartments of the feeders.
If this is not possible, you can detect arcs in these compartments using point sensors. For more detailed
information, see chapters 6.10.8 Application Example for Arc Protection with Point Sensors in Operating
Mode: Light Only and 6.10.9 Application Example for Arc Protection with Point Sensors in Operating
Mode: Light and Current.
•
If an arc occurs in the circuit-breaker compartment and in the cable-connection compartment of the
infeed, the superordinate protection device will shut off.
NOTE
If the Arc protection function operates with the Operating mode = current and light, the addi-
tional current-flow criterion will prevent unwanted tripping caused by external light effects.
NOTE
Note that the number of arc protection modules that are connected to the device depend on the hardware
configuration of the equipment.
When using modular equipment, a maximum of 15 sensors can be connected. If using non-modular equip-
ment, a maximum of 6 sensors (3 sensors per module) can be connected.
Depending on the use case, you can combine point and line sensors.
Protection and Automation Functions
6.10 Arc Protection
SIPROTEC 5, Overcurrent Protection, Manual 517
C53000-G5040-C017-8, Edition 07.2017
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