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[LTD setting value
display screen]
[STD/INST setting value
display screen]
PROTECT
Ir
TL
at
LTD
[ A ]
[ S ]
[
%
]
MENU
200
12
200
PROTECT
LTD
MENU
I
6
t
ON
OFF
PROTECT
Is
Ts
STD/INST
[× I r ]
[ S ]
MENU
2.0 0.06
I
2
t
ON
OFF
PROTECT
STD/INST
MENU
I i
[ A ]
1600
ENTER
MENU
ENTER
MENU
(1) Confirm current setting 2 (lr) and long time delay operating time (TL)
• MDU Breaker main unit current setting 2 (lr) and long time delay operating time (TL) setting values can be confirmed on the LTD setting value display screen.
(2) Confirm short time delay tripping current (Is) and short time delay operating time (Ts), and then confirm instantaneous tripping current (Ii).
• Short time delay tripping current (ls), short time delay operating time (Ts), and instantaneous tripping current (Ii) setting values can be confirmed on
the STD/INST setting value display screen.
Is and Ts setting values
Ii setting value
I
6
t ON/OFF
Ir and TL setting
values
I
2
t ON/OFF
7.1.1-2 Protection characteristic setting and setting method for 400/800 A frame
• The setting current from the measurement display unit can not be changed for current setting (Ir) and instantaneous tripping current (Ii).
Please change with the setting knob on the breaker.
[Earth leakage characteristics
ER setting value display screen]
●
Ir
●
Ii
●
TL
●
Is
●
Ts
●
I
6
t
●
I
2
t
●
I
⊿
n
●
Te
: Current setting
: Instantaneous tripping current
: Long time delay operating time (at 200%)
: Short time delay tripping current
: Short time delay operating time (at Is
×
1.5)
: Long time delay lamp characteristics (*)
: Short time delay lamp characteristics (*)
: Rated sensitivity current
: Maximum operating time
PROTECT
---
---
ER
MENU
(3) Rated Sensitivity Current I
Δ
n, Maximum Operating Time Te Check
* No fuse breaker will be displayed as “-”.
I
⊿
n and Te setting values
I
6
t ON
I
6
t OFF
Current
Operating
time
TL
T
Is
I
2
t ON
I
2
t OFF
Ts
Ii
I
Содержание NF250-HEV
Страница 62: ...MEMO ...
Страница 63: ......
Страница 64: ...Nov 2019 LN107A330H02 IB63E30 A 1911 MEE MDU Breakers ...