4.2.5.7 Settings
Table 391: 51NHA Group settings (Basic)
Parameter
Values (Range) Unit Step Default Description
Pickup value 0.05...5.00 xIn 0.01 0.10 Pickup value
Time multiplier 0.05...15.00 0.01 1.00 Time multiplier in IEC/ANSI IDMT curves
Trip delay time 100...200000 ms 10 600 Trip delay time
Operating curve type 1=ANSI Ext Inv
2=ANSI Very Inv
3=ANSI Norm Inv
4=ANSI Mod Inv
5=ANSI DT
6=LT Ext Inv
7=LT Very Inv
8=LT Inv
9=IEC Norm Inv
10=IEC Very Inv
11=IEC Inv
12=IEC Ext Inv
13=IEC ST Inv
14=IEC LT Inv
15=IEC DT
17=Programmable
18=RI Type
19=RD Type
15=IEC DT Selection of time delay curve type
Table 392: 51NHA Group settings (Advanced)
Parameter
Values (Range) Unit Step Default Description
Minimum trip time 100...200000 ms 10 500 Minimum trip time for IDMT curves
Type of reset curve 1=Immediate
2=Def time reset
3=Inverse reset
1=Immediate Selection of reset curve type
Enable reference use 0=False
1=True
0=False Enable using current reference from other
IEDs instead of stand-alone
Table 393: 51NHA Non group settings (Basic)
Parameter
Values (Range) Unit Step Default Description
Operation 1=enable
5=disable
1=enable Operation Disable / Enable
Curve parameter A 0.0086...120.0000 1 28.2000 Parameter A for customer programmable
curve
Curve parameter B 0.0000...0.7120 1 0.1217 Parameter B for customer programmable
curve
Table continues on next page
1MAC059074-MB A Section 4
Protection functions
615 series ANSI 407
Technical Manual
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