7SR210 Settings Guide
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3.4. Current Protection
3.4.1. Phase Overcurrent
Description Range Default
Gn 51/50 Measurement
Selects whether the RMS value used by the 51 & 50 elements is
True RMS or only calculated at fundamental frequency
RMS, Fundamental RMS
3.4.1.1. 51-1
Description Range Default
Gn 51-1 Element
Selects whether the 51-1 IDMTL Overcurrent element is enabled
Disabled, Enabled Disabled
Gn 51-1 Setting
Pickup level
0.05, 0.06 ... 2.49, 2.5 1 xIn
Gn 51-1 Char
Selects characteristic curve to be IEC or ANSI IDMTL or DTL
DTL, IEC-NI, IEC-VI, IEC-EI, IEC-LTI,
ANSI-MI, ANSI-VI, ANSI-EI
IEC-NI
Gn 51-1 Time Mult (IEC/ANSI)
Time multiplier (applicable to IEC and ANSI curves but not DTL
selection)
0.025, 0.03 ... 1.595, 1.6 , 1.7 ... 4.9, 5,
6 ... 100
1
Gn 51-1 Delay (DTL)
Delay (applicable only when DTL is selected for characteristic)
0, 0.01 ... 19.99, 20 5 s
Gn 51-1 Min Operate Time
Minimum operate time of element.
0, 0.01 ... 19.99, 20 0 s
Gn 51-1 Follower DTL
Additional definite time added after characteristic time
0, 0.01 ... 19.99, 20 0 s
Gn 51-1 Reset
Selects between an ANSI decaying reset characteristic or a
definite time reset
(ANSI) Decaying, 0 ... 59, 60 0 s
Gn 51-1 Inrush Action
Selects if the 51-1 element is blocked from operating when 2nd
Harmonic Inrush Detector operates
Off, Inhibit Off
3.4.1.2. 51-2
Description Range Default
Gn 51-2 Element
Selects whether the 51-2 IDMTL Overcurrent element is enabled
Disabled, Enabled Disabled
Gn 51-2 Setting
Pickup level
0.05, 0.06 ... 2.49, 2.5 1 xIn
Gn 51-2 Char
Selects characteristic curve to be IEC or ANSI IDMTL or DTL
DTL, IEC-NI, IEC-VI, IEC-EI, IEC-LTI,
ANSI-MI, ANSI-VI, ANSI-EI
IEC-NI
Gn 51-2 Time Mult (IEC/ANSI)
Time multiplier (applicable to IEC and ANSI curves but not DTL
selection)
0.025, 0.03 ... 1.595, 1.6 , 1.7 ... 4.9, 5,
6 ... 100
1
Gn 51-2 Delay (DTL)
Delay (applicable only when DTL is selected for characteristic)
0, 0.01 ... 19.99, 20 5 s
Gn 51-2 Min Operate Time
Minimum operate time of element.
0, 0.01 ... 19.99, 20 0 s
Gn 51-2 Follower DTL
Additional definite time added after characteristic time
0, 0.01 ... 19.99, 20 0 s
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