DOLD RN 5897, Перевод оригинальной инструкции

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1
06.05.21 en / 393A
0274213
Your Advantages
• Preventive fire and system protection
• Detection of symmetric and asymmetric insulation faults
• Quick fault localisation through selective earth fault detection to L+
and L-
• Universal application in non-earthed AC, DC, AC/DC networks
up to 300 V
• Easy adjustment of response values and setting parameter via
rotational switch and menu display
• Suitable for large leakage capacitances up to 300 µF
• Optimised reaction time for large leakage capacitances
• Monitoring also with voltage-free mains
• Measuring circuit L(+)/L(-) with broken wire detection (can be switched off)
• Protective conductor PE1/PE2 with broken wire detection
(can't be switched off)
• No additional coupling device required
Features
• Insulation monitoring according to IEC/EN 61557-8
• 2 separate adjustable response thresholds
(using e.g. for pre-Alarm and Alarm)
• Setting range of 1st response value (Pre-Alarm): 10 k
Ω
… 1 M
Ω
• Setting range of 2nd response value (Alarm): 1 k
Ω
… 250 k
Ω
• 2 changeover contacts für insulation failures-Pre-Alarm and -Alarm
• Energized or de-energized on trip can be selected for indicator relay
• Display for indication of measured value, device parameters and
device status
• Setting the maximum leakage capacitance to shorten the response time
• Automatic and manual device self-test
• Alarm storage selectable
• Protection against manipulation by sealable transparent cover
• External control input for combined Test-/Reset-button
• 3 wide voltage input for auxiliary voltage
• Width 52.5 mm
Product Description
The insulation monitor RN 5897 of the VARIMETER IMD family provides
best and up to date insulation monitoring of modern IT systems in an op-
timum and state of the art way fulfilling the relevant standards. The device
can be used in the most flexible way for AC, DC and AC/DC systems even
with large leakage capacity to earth (PE). The adjustment of the setting
values is simple and user friendly done on 2 rotary switches on the front of
the device. Via display and LEDs the measured value, device parameters
and device status are indicated easy to read. With a sealable transparent
cover the device is protectet against manipulation.
Approvals and Markings
Applications
Insulation monitoring of:
• Non-earthed AC, DC, AC/DC networks
• UPS systems
• Networks with frequency inverters
• Battery networks
• Networks with direct current drives
• Hybrid and battery-powered vehicles
• Mobile generator sets
Monitoring Technique
VARIMETER IMD
Insulation monitor
RN 5897
Function Diagram
Manual reset
Alarm
Alarm
Pr
e-Alarm
Pr
e-Alarm
Hysteresis function
Reset
21-24
21-24
21-24
21-24
11-14
11-14
11-14
11-14
11-12
11-12
11-12
11-12
Earth fault
E
R
A
R
pA
R
21-22
21-22
21-22
21-22
t
t
Open circuit operation
Open circuit operation
Open circuit operation
Open circuit operation
De-energized on trip
De-energized on trip
De-energized on trip
De-energized on trip
UH
M11593
AC/DC
Canada / USA
Translation
of the original instructions
All Technical Data in this list relate to the state at the moment of edition. We reserve the right
for technical improvements and changes at any time.