VLF sine wave 45 kV
Test and diagnostic system for
commissioning testing and condition
analysis of medium-voltage cables
The VLF sine wave 45 kV with integrated tanDelta is a
compact, robust, and portable high-performance test and
diagnostic system for medium voltage cables.
The 45 kV tester is a multifunctional tool: apart from VLF and
DC testing, it also performs sheath testing and sheath fault
pinpointing (in combination with the step voltage probe ESG
NT). Moreover, the optional internal tanDelta expands the
system to assess both cable integrity and
condition.
The smart VLF system automatically adjusts the test frequency
to the cable length, making even tests on 25 kV rated
cables (up to 25 km) easy and reliable.
Earth loop monitoring and automatic discharge eliminate
hazards to the user. The automatic discharge functionality
makes the use of an external safety stick no longer necessary.
In the event of excessive charge current, the integrated
breakdown detector shuts down the test voltage, preventing
extensive damage to the cable.
Field operations require no external computer. Equipped with
intuitive operating software and a large internal memory, the
VLF 45 kV evaluates and stores all data automatically. Via the
USB port, datasets can be easily exported and
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Performs cable withstand testing, cable
diagnosis and sheath fault pinpointing
■
Automatically adjusts the test frequency
to the cable length
■
Eliminates hazards to the user and pre-
vents extensive damage to the cable
■
Easy field operation with no need for
external computer
DESCRIPTION
processed for report generation via the PC software
MeggerBook RE (incl. in delivery). The user can review all
performed measurements either immediately or at a later point
in time (internally).
The well thought-out operating principle combined with
simple visual commands guide the user through the entire
measurement process, keeping training time to a minimum
even for advanced cable diagnosis.
The system can also be used as a voltage source for the
optional PD attachement and can be easily expanded to a
universal testing and diagnostic system.
VLF sine wave 45 kV
Test and diagnostic system for
commissioning testing and condition
analysis of medium-voltage cables
TECHNICAL DATA* FEATURES
Output voltage
VLF sine wave 0 … 32 kV
RMS
/ 0 ... 45 kV
peak
DC voltage ± 0 … 45 kV
VLF rectangular voltage 0 … 45 kV
Precision ± 1 %
Resolution 0.1 kV
Output current
Measuring range 0 … 20 mA
Precision ± 1 %
Resolution 10 μA
Frequency range 0.01 Hz ... 0.1 Hz
autom. frequency adjustment
Output load 0.6 μF @ 0,1 Hz at 32 kV
RMS
10 μF maximum test capacity
Internal tanDelta
Measuring range 10
-3
...10
0
Precision 10
-3
Resolution 10
-4
Sheath testing 0 … -20 kV DC
Sheath fault pinpointing
Safety
0 … -20 kV DC
Pulse rate 0.5:1, 1:2, 1:3, 1:4
and 1.5:0.5
Earth loop ground monitoring, au-
tom. discharging of the test object
Input voltage 100 V … 264 V, 50/60 Hz, 600 VA
Duty cycle continuous
Internal memory For at least 1000 measurements
Dimensions (W x H x D) 544 x 520 x 416 mm
Weight 50 kg
Protection class IP 21
Operating temperature - 20 °C … + 55 °C
Storage temperature - 20 °C … + 70 °C
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High test capacity of up to 10 µF
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Continuous test cycle
(testing without operational interruptions)
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AC/DC testing in compliance with DIN VDE, EN, IEEE
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Intuitive user software with large internal memory
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Leakage current measurement in DC and VLF rectangular
mode
■
Optional internal tanDelta with automatic evaluation
acc. to IEEE
■
Maximum user safety through automatic discharge of the
test object and earth loop ground monitoring
■
Breakdown detection and load recognition (R, C)
��
Quick, easy logging and updates via USB port
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Sheath testing and sheath fault pinpointing acc. to
IEC 60229
SCOPE OF DELIVERY
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VLF Sinus 45 kV
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HV connection cable 5 m
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Mains cable/grounding cable 3 m
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Accessory bag
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USB stick for logging
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MeggerBook RE reporting software
* We reserve the right to make technical changes.