Method For Various Settings; Setting Method For Measurement-Related Items - Mitsubishi Electric MDU-BN Instruction Manual

(3) Rated Sensitivity Current I Δ n, Maximum Operating Time Te Check
* No fuse breaker will be displayed as " - " .
[Earth leakage characteristics
ER setting value display screen]
PROTECT ER
--- ---
MENU
● I r
: Current setting
● I i
: Instantaneous tripping current
● T L
: Long time delay operating time (at 200%)
● I s
: Short time delay tripping current
● Ts : Short time delay operating time (at Is × 1.5)
● I
t : Long time delay lamp characteristics (*)
6
● I
t : Short time delay lamp characteristics (*)
2
● I ⊿ n
: Rated sensitivity current
● Te
: Maximum operating time

7.1.2 Method for various settings

• Select SETTING from the main menu screen and press ENTER to switch to the setting item selection screen.
• Switches through MEASURE ⇔ ALARM ⇔ LCD ⇔ DATE ⇔ EP/EQ ⇔ ITEM_S ⇔ FREE_S ⇔ MEASURE....
[Main menu screen]
PROTECT
SETTING
AL_RST
ERASE
INFO
MENU
• Select MEASURE from the setting item selection screen and press ENTER to switch to the measurement setting selection screen.

7.1.2-1 Setting method for measurement-related items

• Select MEASURE from the setting item selection screen and press ENTER to switch to the measurement setting selection screen.
• Switches through PHASE ⇔ LINE_S ⇔ DEMAND ⇔ PULSE ⇔ PHASE.... (PULSE is only for models with electric energy pulse output.)
[Measurement setting
selection screen]
SETTING MEASURE PHASE
LINE_S
DEMAND
PULSE
MENU
(1) Phase switching setting
[Default value: NORMAL (no phase switching)]
• Select PHASE on the measurement setting selection screen and press ENTER to switch to
the phase switching display screen. (Screen [1])
This allows the phase switching setting value to be changed. Select INVERS
(phase switching) and press ENTER to decide.
• Select YES on the allow changes screen and press ENTER to change
the setting. (Screen [2])
* " NOW SETTING... " is displayed until the setting is completed.
• Once setting is complete, the screen will return to the measurement
setting selection screen.
[Phase switching
display screen]
SETTING MEASURE PHASE
NORMAL
INVERS
MENU
Screen [1]
I ⊿ n and Te setting values
* For 400/800 A frame,
ON is set always.
[Setting item
selection screen]
SETTING MEASURE
ALARM
ENTER
LCD
DATE
EP/EQ
MENU
ITEM_S
Select with UP/DOWN
ENTER
To [Phase switching display screen]
MENU
[Allow changes screen]
SETTING
ENTER
MENU
Phase switching
setting value
Select with UP/DOWN
Operating
time
Select with UP/DOWN
ENTER
To [Measurement setting selection screen]
MENU
MENU
● PHASE
● LINE_S
● DEMAND : Demand time limit setting
● PULSE
MEASURE PHASE
ENTER
OK?
NO
To [Measurement setting selection screen]
YES
MENU
Select NO ⇔ YES
Screen [2]
with UP/DOWN
40
T
I t ON
6
TL
I t OFF
6
Is
I
2
I t OFF
2
Current
: Phase switching ON/OFF setting
: Phase and wire setting
: Pulse unit setting
N S
OW ETTING....
t ON
Ts
Ii
I