System-disconnection relay EU400 NA-protection
32
Subject to technical changes
•
Press the button 1x
→
display
8
Pin
8
/
8
504
8
•
Use the
buttons to set the new, desired pin code
(
caution: write down the pin code
)
•
Press the button 1x
Code lock on, display
8
on
8
flashes three times
Code lock off, display
8
oFF
8
flashes three times
Return to menu mode, menu item code lock
If there are any problems with the code lock (pin forgotten), the lock can be switched off and the pin can be
reset to 504 by keeping the Set key pressed while switching on the mains until
8
Code
8
/
8
oFF
8
appears in
the display.
12.17
Sealing
All the settings and the simulation mode can be locked.
If the
LED is illuminated, the EU400 is locked.
If an attempt is made to change a setting in the locked state, for 3s the display shows
8
LOc
8
.
Adjustment procedure Sealing/Lock ON (OFF):
•
If present, remove seal (only authorised person)
•
Apply control supply voltage at A1-A2
•
Slightly lift the key cover and turn 180°
•
Actuate the small blue button by pressing the button cover very firmly (LED starts flashing)
until the green LED
is illuminated.
12.18
Simulation
Here, the voltage, frequency or a vector surge can be simulated and the setting can be tested. All 3 phases
plus the 10 minute mean value are always simulated. All functions of the device operate as if this value is
actually being measured. Alarm and error messages are only indicated with the LEDs and not in the display.
The set values are simulated until the menu item
si .
is exited with the
or
button. If the EU400 is sealed/locked, simulation is not possible.
If the section switch feedback contacts are connected to the EU400 and enabled, (set value > section-switch
turn-on time under
8
trel.
8
), after a shut-down, the tripping time (dAL + time of slowest section switch) is
displayed.
Adjustment process:
•
Select the menu item with the
buttons until
→
display
8
si .
8
•
Press the button 1x
→
display
8
si
8
/
8
u
8
•
Use the
buttons to set the measurement factor for simulation:
o
8
u
8
V 10min mean value (frequency = last simulated value)
o
8
f
8
Frequency (voltage = last simulated value)
o
8
uSr
8
Vector shift
•
Press the button 1x
→
display
8
230
8
(selected measurement factor is simulated)
•
Use the
buttons to set the desired value
After exiting the Simulation menu item with the
buttons, the unit switches over to monitoring the limits.
The unit automatically returns to the display mode if no button is pressed for 15 minutes.
Hint: A limit value should be tested that is higher than the set 10min mean value. If the 10min mean value has
to be temporarily switched off, set (
8
Um .
8
→
8
oFF.
8
since otherwise it will trip first. The same applies,
for example, for
U¯
, during a simulation of
U¯ ¯
in Pr3 and Pr4. (Medium voltage)
