DOLD VARIMETER RCM Installations

Installations- / Monitoring Technique
VARIMETER RCM
Residual Current Monitor, Type B for AC and DC Systems
RN 5883
RN 5883
Product Description
The AC/DC sensitive residual current monitor RN 5883 allows an early
detection of insulation faults and detects differential currents with AC
as well as DC components in grounded voltage systems (type B). The
measurement takes place via an external current transformer.
Contrary to an RCD the residual current monitor RN 5883 does not dis-
connect the mains when detecting a fault but only indicates it. Besides
the easy to read LED chain indicating the actual current several LEDs
display operation, pre-alarm and alarm. The 4 measuring ranges cover
10 to 3 A. Additional features are broken wire detection, test function and
adjustable pre-alarm.
The residual current monitor RN 5883 provides early information for precise
and cost effective maintenance before the plant stops.
Circuit Diagram
A1 A2 i1 k1 i2 k2 X1 X2
A1 A2
X1 X2
i1 k1
i2 k2
12
I F
11
Alarm
14
0...10V
22
U+ U-
21
Pre - Alarm
24
11 12 14 21 22 24 U+ U-
M11213
Connection Terminals
Terminal designation
A1, A2
i1, k1, i2, k2
X1, X2
11, 12, 14
21, 22, 24
U-, U+
All Technical Data in this list relate to the state at the moment of edition. We reserve the rigth for
technical improvements and changes at any time.
ND 5015/035 ND 5015/070
Signal description
Auxiliary voltage U
H
Connection of an external
residual current transformer
Parameterization input
energized or de-energized on trip
Contacts alarm signal
Contacts pre-alarm signal
Analogue output (option)
Your Advantage
• Preventive fire and system protection
• Increasing the availability of plants by early fault detection
• Universal usage at AC/DC mains
• Protection against manipulation by sealable transparent cover
over setting switches
Features
• According to IEC/EN 62020, VDE 0663
• For AC and DC systems Type B
• To detect earth faults in grounded voltage systems
• 4 setting ranges from 10 mA to 3 A
• Manual reset, with alarm and pre-warning
• With adjustable switching delay
• Energized or de-energized on trip
• LED indicator for operation, pre-alarm and alarm
• With test function
• LED-chain indicates fault current
• As option with analogue output
• Broken wire detection
• Width: 52.5 mm
Approvals and Markings
1)
Canada / USA
1) RN 5883 Variant /61; 2) ND 5015
Application
The residual current monitor type B is designed to monitor DC systems
and AC systems up to 250 Hz.
Indication
green LED „ON": On, when auxiliary supply connected
yellow LED „Pre-Alarm": Flashes during time delay t
On, when pre-alarm active
red LED „Alarm": Flashes during time delay t
On, when alarm active
yellow and red LED: Flashes on broken wire or extremely high input
signal
yellow LED-chain: LED chain indicates fault current in % of adjusted
alarm value
Notes
The devices measure AC and DC current (AC / DC sensitive. Due to the
measurement principle they also detect magnetic fields in the next to the
current transformer.
When planning a panel with AC/DC sensitive residual current monitors
please make sure that no components are placed next to the CT that
create a magnetic field, e.g. contactors, transformers etc.
If an influence is detected, also a rotation of the CT by 90° could positively
reduce the influence.
1
2)
A025518
Canada / USA
v
v
04.03.20 en / 201A