Setting the SEF protection for model 120 and 420
The settings for the SEF protection are as follows:
• Select "SEF" on the "Scheme sw" screen to display the "SEF" screen.
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S E 1 E N
O f f / O n
M S E 1 C - I E C
N I / V I / E I / L T I
M S E 1 C - I E E E
M I / V I / E I
M S E 1 C - U S
C O 2 / C O 8
S E 1 R
D E F / D E P
S E 1 S 2
O f f / O n
S E 2 E N
O f f / O n
S E 3 E N
O f f / O n
S E 4 E N
O f f / O n
<SE∗EN>
• Enter 1(=On) to enable the SEF ∗ and press the ENTER key. If disabling the SEF ∗ , enter
0(=Off) and press the ENTER key.
<MSE1C>
To set the SEF1 Inverse Curve Type, do the following.
• If [MSE1] is 1(=IEC), enter 0(=NI) or 1(=VI) or 2(=EI) or 3(=LTI) and press the ENTER
key.
• If [MSE1] is 2(=IEEE), enter 0(=MI) or 1(=VI) or 2(=EI) and press the ENTER key.
• If [MSE1] is 3(=US), enter 0(=CO2) or 1(=CO8) and press the ENTER key.
<SE1R>
To set the Reset Characteristic, do the following.
• If [MSE1] is 2(=IEEE) or 3(=US), enter 0(=DEF) or 1(=DEP) and press the ENTER key.
<SE1S2>
To set the Stage 2 Timer Enable, do the following.
• Enter 1(=On) to enable the SE1S2 and press the ENTER key. If disabling the SE1S2, enter
0(=Off) and press the ENTER key.
• After setting, press the END key to display the following confirmation screen.
C h a n g e
S E F
1
0
0
0
0
0
0
0
0
s e t t i n g s ?
⎯
⎯
105
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6 F 2 S 0 8 2 8