DOLD VARIMETER IMD RL 5898 Monitoring Technique - Page 4
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Indicators
Connection
measuring ciruit
or
Coupling device
Indicator relay
alarm and pre-alarm
External
control input
RN 5897/010
Trigger
output
Auxiliary
voltage
Protective
conductor
M11597_c
Indicators
The colour of the backlight indicates the operating status of the device.
Off:
No auxiliary voltage connected
Green:
Normal operation (Insulation resistance in healthy state)
Red:
Alarm (measured value below alarm response value,
device failure, connection failure)
Orange: Warning (measured value below pre-alarm response value,
test mode, Parameter set-up mode)
Actual value display
The actual insulation resistance „R
value is R
< 10 kΩ, the value in kohm is displayed with 1 decimal
E
place. With values 10 kΩ ≤ R
without decimal place, with values 500 kΩ ≤ R
rounded to 10 kΩ. Insulation resistance values 1 MΩ ≤ R
are displayed in MOhm with one decimal place. If the resistance is
R
> 2 MΩ the display indicates ---- showing the value is higher the 2 MΩ.
E
In a DC Network an asymmetric insulation resistance to „+" or „-" is
indicated by displaying „R
+[kΩ]" or „R
E
By pressing the scroll buttons (Scroll-Up „" und Scroll-Down „") more
measured values can be shown. Another value is the mains voltage on
L(+)/L(-).This is indicated with „U
the type of network and voltage. If the unit is connected single pole to a
3NAC network the mains voltage cannot be measured. With this setting
the voltage value is not displayed. When manual reset is selected, the
display shows the minimum stored value of the resistance „R
„R
[kΩ]" after the value dropped below the response value also when the
M
value goes back to healthy state. The stored minimum value will only be
reset when acknowledging the stored Alarm signal (with the reset button).
Also the firmware version can be displayed.
Positive measurement
phase active (MP+)
Negative measurement
phase active (MP-)
4
[kΩ]" is displayed. If the actual
E
< 500 kΩ the display shows the value
E
< 1 MΩ the value is
E
-[kΩ]"
E
[V
]" or „U
[V
]" in V depending on
N
AC
N
DC
Pre-Alarm monitoring
relay K2 energized
Alarm monitoring relay
K1 energized
07.07.23 en / 755A
< 2 MΩ
E
[MΩ]" or
M