Features
• Partial discharge indicator PDI.
• Measurement of polarization and depolarization currents (PDC).
• Diagnostics of insulation systems based on standard measurements of IR, DAR, PI, SV, RT, DD.
• It allows testing the electrical durability of the tested object – breakdown voltage indication.
• High resistance to electromagnetic interferences guarantees uninterrupted work in power stations and in close
proximity to high voltage transmission lines up to 1200 kV AC and 800 kV DC.
• The function of smooth voltage rise in time (RT – Ramp Test) allows to state the partial discharges in the facility
and to carry out a partial location of their occurrence.
• Efficient converter with a power of ~150 W that enables insulation burnout, allowing for pinpointing the location
of cables and wires short circuit using one of the following:
• visual method (if power cables are visible along the entire length),
• reflectometric methods, seismic-acoustic waves detector, or with A-frame to indicate direction of the fault
(the conductor must be buried in the ground with earth direct contact).
• Compatible with external software.
Application
MIC-15k1 meter is designed to measure insulation resistance of power objects,
i.e.:
• single- and multicore cables,
• transformers,
• motors and generators,
• capacitors, switches and other devices installed in power stations.
It is especially recommended for measurements in areas with very high
electromagnetic disturbances, e.g. electrical substations with 1200 kV AC
and 800 kV DC. Thanks to the 15 kV measuring voltage (in accordance with
ANSI / NETA ATS-2009 TABLES 100.1) the meter can be used for measuring
objects with a nominal voltage above 34.5 kV.
Capabilities of the device
Highly efficient HV inverter, with test voltage of 15 kV and current up to 10 mA,
suitable for measuring the insulation resistance up to 40 TΩ. Achieving such a
result makes these meters unrivalled devices. Three-wire resistance measurement,
performed using a “GUARD” wire, eliminates surface leakage currents
caused by contaminated insulation, thereby increasing the reliability of obtained
results.
The meter indicates the Dielectric Absorption Ratio DAR, Polarization Index
PI and the value of Dielectric Discharge DD (measurement time 60…5999 s).
The device allows user to assess the condition of the insulation, by applying
the test voltage incrementally in steps (SV – Step Volatge) or smoothly
(RampTest – RT).
• SV method ensures that a dielectric in good condition will provide the same
results, regardless of the applied voltage.
• RT method allows to determine the characteristics of the insulating material.
The meter smoothly increases the measuring voltage without exposing the
object to so-called electrical stress. It records the time and voltage value at
which the electrical breakdown of the insulation took place.
Built-in digital filters, with averaging time of 10, 30, 60, 100, 200 sec. guarantee
stable measurement results in areas of strong electromagnetic interference.
Burnout
A very useful solution is the function that allows to Burnout the damaged object.
In case of exposed cables, it enables visual identification of the fault location.
In the case of shielded cables, the method allows to generate a seismicacoustic
wave from the place of damage.
In special conditions, an energetic discharge will appear cyclically. By using
the geophone it will be possible to precisely pinpoint the place where such a
discharge occurs.
Burnout feature allows also locating transient faults (appearing, for example,
only during rainfall) with the support of reflectometry, and in case of a short
circuit (of a screen or return wire) to the ground – applying the method of measuring
voltage drop (the A-frame).
Autosaving the measurement results
The device automatically saves the measurement results. The number of autosave
points depends on the amount of data, which is saved within the main memory.
Data analysis
The Sonel MIC Mobile mobile app allows to observe the results during
the measurement. The application can generate real-time graphs in various
configurations. This allows to evaluate the condition of the object
already during the tests.
The option of remote start and stop of the measurement is particularly
useful. Thanks to it, the tests can be carried out remotely, eg. from a different
room or inside the car, when there are difficult weather conditions
for the user. Using the phone GPS, it is possible to precisely determine
the place of measurement.
Thanks to the mobile application and the Sonel Reader software, the
user can store previous measurements data and compare them with
current results transferred from the meter’s extensive memory. This solution
allows to prepare a measurement report, track the progress of
insulation degradation and plan renovation works.
Insulation resistance measurement
Measuring range according to IEC 61557-2
UN = 15 000 V: 50 kΩ…40.0 TΩ
Measurement
with DC and
increasing
voltage (SV)
for UISO of
Range Resolution Accuracy
5 kV
0…999 kΩ 1 kΩ
±(3% m.v. + 10 digits)
1.00…9.99 MΩ 0.01 MΩ
10.0…99.9 MΩ 0.1 MΩ
100…999 MΩ 1 MΩ
1.00…9.99 GΩ 0.01 GΩ
10…0…99.9 GΩ 0.1 GΩ
100…999 GΩ 1 GΩ ±(3.5% m.v. + 10 digits)
1.00…9.99 TΩ 0.01 TΩ ±(7.5% m.v. + 10 digits)
≥10 kV 10.0…20.0 TΩ
0.1 TΩ ±(12.5% m.v. + 10 digits)
≥15 kV 10.0…40.0 TΩ
Capacitance measurement
Range Resolution Accuracy
0…999 nF 1 nF
±(5% m.v. + 5 digits)
1.00…49.99 μF 0.01 μF
• Displaying measured capacity after RISO measurement
• For measurement voltages below 100 V the measurement error is not
specified
Ranges of measured resistance depending on the test voltage
Voltage UISO Measuring range
50 V 200 GΩ
100 V 400 GΩ
250 V 1.00 TΩ
500 V 2.00 TΩ
1000 V 4.00 TΩ
2500 V 10.00 TΩ
5000 V 20.0 TΩ
10 000 V 40.0 TΩ
15 000 V 40.0 TΩ
Technical specification
type of insulation acc. to
EN 61010-1 and IEC 61557 double
measurement category
acc. to EN 61010-1
IV 1000 V (operating altitude ≤2000 m)
IV 600 V (operating altitude ≤3000 m)
ingress protection
acc. to EN 60529 IP67 (IP40 for open case)
resistance to external
interference voltages up to 1550 V
resistance to external
interference currents up to 10 mA
advanced, digital filtering
of interferences 10 / 30 / 60 / 100 / 200 seconds
test leads lock yes
power supply LiFePO4 13.2 V 5.0 Ah rechargeable battery
from network 90 V…260 V, 50 Hz/60 Hz
dimensions 390 x 308 x 172 mm
15.3″ x 12.1″ x 6.8″
weight ca. 6.6 kg
ca. 14.6 lbs
storage temperature -25°C…+70°C
-13°F…+158°F
operating temperature -20°C …+50°C
-4°F…+122°F
humidity 20%…90%
operating altitude ≤3000 m
reference temperature +23ºC ± 2ºC
reference humidity 40%…60%
display segment-type LCD
number of RISO measurements
acc. to EN 61557-2 with
battery power supply
min. 1000
data transmission USB, Bluetooth
quality standard ISO 9001 compliant
device meets the
requirements of standards EN 61010-1 and IEC 61557
the product meets EMC
requirements (immunity
for industrial environment)
with accordance to standards
EN 61326-1 and EN 61326-2-2
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