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Glossary
41
RCMS150_D00259_01_M_XXEN/08.2021
Main alarm
In the event of a main alarm, a message is sent via the bus
and the respective LED lights up on the RCMS. Is triggered
by:
Exceeding the set response value during residual cur-
rent measurement
Fault of measuring current transformer
Device error
Message
2 message levels are distinguished: prewarning and main
alarm.
Overview
The current state and the measured value are indicated for
all 12 measuring channels (#)
Prewarning
Preliminary stage to main alarm, the less severe response
value has been reached (e.g. 50 % of the main alarm
response value). If there is a prewarning, a message is sent
via the bus. Is triggered by:
Exceeding the set response value during residual cur-
rent measurement
Fault of measuring current transformer
Device error
Report
The report includes:
- The current measured values for each channel
- Values of the general settings
Hysteresis,
t
off
,
t
start-up
- Response values and
t
on
for prewarnings and main alarms
- Information regarding the RCMS150…
Response value main
alarm
Response value of the main alarm (
I
Δn2
)
Response value
prewarning
Indication of the response value alarm (50…100 %) (
I
Δn1
) as
a percentage value
RMS
R
oot
M
ean
S
quare: The currents are detected and evaluated
as RMS values in the frequency range of 0…2000 Hz.
Terms
Explanation
Содержание LINETRAXX RCMS150
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