7.1.8 Technical dataGUID-6C2EF52A-8166-4A23-9861-38931682AA7D v7Table 48:ZMFPDIS technical dataFunction Range or value AccuracyNumber of zones 3 selectabledirections, 3 fixeddirections-Minimum operate current, Ph-Phand Ph-E(5-6000)% of IBase ±1.0% of IrPositive sequence reactancereach, Ph-E and Ph-Ph loop(0.01 - 3000.00)ohm/pPseudocontinuous ramp:±2.0% of set valueConditions:Voltage range:(0.1-1.1) x UrCurrent range:(0.5-30) x IrAngle: At 0degrees and 85degreesIEC 60255-121points A,B,C,D,ERamp of shots:±2.0% of set valueConditions:IEC 60255-121point BPositive sequence resistancereach, Ph-E and Ph-Ph loop(0.00 - 1000.00)ohm/pZero sequence reactance reach (0.01 - 9000.00)ohm/pZero sequence resistive reach (0.00 - 3000.00)ohm/pFault resistance reach, Ph-Eand Ph-Ph(0.01 -9000.00) ohm/lDynamic overreach < 5% at 85 degreesmeasured with CVTsand 0.5 < SIR < 30,IEC 60255-121-Reset ratio 105% typically -Directional blinders Forward: -15 – 120degreesReverse: 165 – -60degreesPseudo continuous ramp:±2.0 degrees, IEC 60255-121Resistance determining the loadimpedance area - forward(0.01 - 5000.00)ohm/pPseudocontinuous ramp:±2.0% of set valueConditions:Tested at ArgLd =30 degreesRamp of shots:±5.0% of set valueConditions:Tested at ArgLd =30 degreesAngle determining the loadimpedance area5 - 70 degrees Pseudo continuous ramp:±2.0 degreesConditions:Tested at RLdFw = 20 ohm/pDefinite time delay to trip, Ph-Eand Ph-Ph operation(0.000-60.000) s ±0.2% of set value or ±35 ms whicheveris greaterOperate time 24 ms typically, IEC60255-121-Reset time at 0.1 to 2 x Zreach Min. = 20 msMax. = 35 ms-1MRK 505 394-UEN A Section 7Impedance protectionLine differential protection RED650 2.2 IEC 145Technical manual
