7SG15 MicroTAPP Settings
©2012 Siemens Protection Devices Limited Chapter 3 Page 4 of 8
3.1 Tap Customisation Sub-Menu
SETTING RANGE DEFAULT
Physical Tap 0 -99 to 99 plus ‘ ‘ or ‘T’ 0
Physical Tap 1 -99 to 99 plus ‘ ‘ or ‘T’ 1
… -99 to 99 plus ‘ ‘ or ‘T’ …
Physical Tap 39 -99 to 99 plus ‘ ‘ or ‘T’ 39
NOTE: the available settings in this sub-menu will be dependant upon the “Number of Taps”
setting in the Tap-changer Menu.
4 Network Config Menu
SETTING RANGE DEFAULT
Transformer Group A to H A
System Group Capacity
(MVA)
1 to 10 @ steps of 0.1,
10.5 to 200 @ steps of 0.5,
201 to 2000 @ steps of 1
30.0 MVA
Power System Rotation A-B-C or A-C-B A-B-C
System Power Factor 0 to 0.95 @ steps of 0.01,
0.955 to 1.0 @ steps of 0.005
0.970 lagging
Lagging or leading
Voltage Control Method TAPP or Circ. Current TAPP
Frequency Voltage Reduction Enabled or Disabled Enabled
Freq. Voltage Redn. Level (Hz) 47 to 62 @ steps of 0.1 48.0 Hz
5 Voltage Control Menu
SETTING RANGE DEFAULT
Target Voltage
(% of nominal voltage)
85 to 115 @ steps of 0.1 100.0 %
Voltage Band
(% of nominal voltage)
0.5 to 10.0 @ steps of 0.1 +/- 1.5 %
Load Drop Comp.
(% of nominal voltage)
0 to 20 @ step of 0.1 2.5 %
Initial Delay
(seconds)
2 to 180 @ steps of 1 120 s
Inter-tap Delay
(seconds)
Continuous,
1 to 120 @ steps of 1
10 s
High Volts Char. DTL or IDMTL DTL
Fast Tap Down Enabled or Disabled Enabled
Tap Stagger Circ. Current
(% of System Group Capacity)
-10.0 to +10.0 @ steps of 0.1 0.0 %
Alarm Time
(seconds)
0 to 900 @ steps of 10 900 s
Auxiliary Target 1
(% of nominal voltage)
85 to 115 @ step of 0.1 97 %
Auxiliary Target 2
(% of nominal voltage)
85 to 115 @ step of 0.1 94 %
Auxiliary Target 3
(% of nominal voltage)
85 to 115 @ step of 0.1 103 %
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