tensiometer PFVL141V 10,0MN


External connections:
• Excitation current to the load cells
• 2 or 4 analog inputs for load cell signals
• 4 analog outputs, voltage or current
• 8 digital inputs for control signals
• 8 digital outputs
• +24 V supply for external units, max 0.5 A
• Ethernet connection
• Service and multiple control units
• 2 serial interfaces of type RS-232 for
external displays, control, etc.

Model:PFVL141V 10,0MN

Category: SKU: PFVL141V 10,0MN Tag:
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 tensiometer PFVL141V 10,0MN

 tensiometer PFVL141V 10,0MN


Power Swing Logic (PSLPSCH) is a complementary function to Power Swing Detection (ZMRPSB) function. It enables a reliable fault clearing for different faults on protected lines during power swings in power systems. It is a general goal, to secure fast and selective operation of the distance protection scheme for the faults, which occur on power lines during power swings.

It is possible to distinguish between the following main cases:

• A fault occurs on a so far healthy power line, over which the power swing has been detected and the fast distance protection zone has been blocked by ZMRPSB element.

• The power swing occurs over two phases of a protected line during the dead time of a singlepole auto-reclosing after the Ph-E fault has been correctly cleared by the distance protection. The second fault can, but does not need to, occur within this time interval.

• Fault on an adjacent line (behind the B substation, see figure 242) causes the measured impedance to enter the operate area of ZMRPSB function and, for example, the zone 2 operating characteristic (see figure 243).

Correct fault clearance initiates an evolving power swing so that the locus of the measured impedance continues through zone 1 operating characteristic and causes its unwanted operation, if no preventive measures have been taken, see figure 243.



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