Benning IT 100 User manual

BENNING IT 100
Operating manual
Translation of the German original version
5225 / 04/2022 en

Legal notice
5225 / 04/2022 enBENNING IT 1002
Legal notice
Notes concerning the documentation
Ensure that the applicable documentation is used for this product. For safe handling, knowledge
that is provided in these instructions is required.
The product may only be handled while following this documentation, particularly the safety
instructions and warnings it contains. The personnel must be qualified for the respective task
and have the capability to recognise risks and prevent possible dangers.
Manufacturer and holder of rights
BENNING Elektrotechnik und Elektronik GmbH&Co.KG
Münsterstraße135–137
46397 Bocholt
Germany
Phone: +492871/93‑0
E-Mail: [email protected]
Internet: www.benning.de
Commercial register Coesfeld HRA No. 4661
Copyright
© 2022, BENNING Elektrotechnik und Elektronik GmbH&Co.KG
All rights reserved.
This document – particularly all of the contents, texts, photographs and graphics that it contains
– are protected by copyright.
No part of this documentation or the associated contents may be reproduced or edited, copied
or distributed using electronic media in any form (printed, photocopied or using any other
method) without express written permission.
Disclaimer
The contents of the documentation has been checked to ensure that it corresponds to the
hardware and software described. Nevertheless, deviations cannot be ruled out, so Benning
cannot guarantee complete correspondence. The contents of this documentation are checked
at regular intervals, and any corrections that are needed are contained in the versions that
follow.
General non-discrimination
Benning is aware of the importance of language with regard to the gender equality and
endeavors to take this into account at all times. To improve readability, we have refrained from
consistently using differentiating formulations.

Table of contents
Table of contents
1 Introduction................................................................................................................................................7
1.1 General notes........................................................................................................................7
1.2 History ...................................................................................................................................8
1.3 Service & support..................................................................................................................9
2 Safety........................................................................................................................................................10
2.1 Warning system ..................................................................................................................10
2.2 Standards applied ...............................................................................................................10
2.3 Symbols used......................................................................................................................11
2.4 Intended use .......................................................................................................................12
2.5 Special types of risks ..........................................................................................................14
3 Scope of delivery.....................................................................................................................................15
4 Device description...................................................................................................................................17
4.1 Device structure ..................................................................................................................17
4.2 Functions.............................................................................................................................20
4.2.1 “TEST” key ..........................................................................................................................20
4.2.2 High-voltage warning light...................................................................................................20
4.2.3 Display illumination key.......................................................................................................20
4.2.4 “LOCK”key .........................................................................................................................21
4.2.5 Blue key ..............................................................................................................................21
4.2.6 “PIDAR” key .......................................................................................................................21
4.3 Measuring ranges ...............................................................................................................21
4.3.1 Voltage ranges ....................................................................................................................22
4.3.2 Resistance ranges ..............................................................................................................22
5 Operation..................................................................................................................................................24
5.1 Requirements for tests and measurements ........................................................................24
5.2 Connecting the safety measuring lines ...............................................................................25
5.3 Voltage measurement .........................................................................................................26
5.4 Resistance measurement or continuity test ........................................................................27
5.5 Low-resistance measurement .............................................................................................28
5.6 Insulating resistance measurement ....................................................................................29
5.7 Measuring the polarisation index(PI) or the dielectric absorption ratio(DAR) ...................31
6 Maintenance.............................................................................................................................................33
6.1 Maintenance schedule ........................................................................................................33
6.2 Making the device free of voltage .......................................................................................33
6.3 Testing the fuse...................................................................................................................34
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Table of contents
6.4 Cleaning the device.............................................................................................................35
6.5 Replacing the batteries .......................................................................................................36
6.6 Calibrating the device..........................................................................................................37
6.7 Replacing the fuse ..............................................................................................................37
7 Technical data..........................................................................................................................................38
8 Disposal and environmental protection ................................................................................................39
Index .........................................................................................................................................................40
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Table of figures
Table of figures
Figure 1 BENNINGTA1............................................................................................................................ 15
Figure 2 BENNINGTA2............................................................................................................................ 15
Figure 3 BENNINGTA3............................................................................................................................ 16
Figure 4 Ø 4mm measuring lines with 2mm measuring probe ................................................................ 16
Figure 5 BENNING IT100 device structure............................................................................................... 17
Figure 6 Rotary switch ............................................................................................................................... 18
Figure 7 Digital display............................................................................................................................... 19
Figure 8 Voltage measurement.................................................................................................................. 26
Figure 9 Resistance measurement ............................................................................................................ 27
Figure 10 Low-resistance measurement...................................................................................................... 28
Figure 11 Insulating resistance measurement ............................................................................................. 30
Figure 12 Testing the fuse ........................................................................................................................... 34
Figure 13 Battery replacement (exemplary)................................................................................................. 36
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List of tables
List of tables
Table 1 History.......................................................................................................................................... 8
Table 2 Symbols on the device................................................................................................................. 11
Table 3 Symbols used in the operating manual........................................................................................ 11
Table 4 Description of symbols on the digital display ............................................................................... 19
Table 5 AC voltage ranges (V-AC) ........................................................................................................... 22
Table 6 DC voltage ranges (V-DC)........................................................................................................... 22
Table 7 Measuring ranges for resistance measurement(Ω) .................................................................... 22
Table 8 Measuring ranges for low-resistance measurement(Ω).............................................................. 23
Table 9 Measuring ranges for insulating resistance measurement(Ω) .................................................... 23
Table 10 Maintenance schedule................................................................................................................. 33
Table 11 Technical data ............................................................................................................................. 38
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Introduction
1.1 General notes
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1 Introduction
The insulation and resistance measuring device BENNINGIT100 described here (in the
following only referred to as “device”) is intended for testing in circuits with a nominal voltage up
to a maximum of 600V‑AC or 600V‑DC. The device enables you to perform the following tests
and measurements:
• DC and AC voltage measurement
• Resistance measurement
• Continuity test
• Low-resistance measurement
• Insulating resistance measurement
• Measuring/ calculating the polarisation index(PI)
• Measuring/ calculating the dielectric absorption ratio(DAR)
Further information
http://tms.benning.de/it100
On the Internet, you will find the following additional information directly at the specified link or
at www.benning.de (product search):
• Operating manual of the device in several languages
• Further information depending on the device (e.g. brochures, technical reports, FAQs)
1.1 General notes
Target group
This operating manual is intended for the following groups of people:
• Qualified electricians and electrotechnically trained personnel
Required basic knowledge
To understand these operating manual, you will need general knowledge of testing and
measuring equipment. Moreover, you will need basic knowledge of the following issues:
• General electrical engineering

1.2 History
Introduction
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Purpose of the operating manual
This operating manual describes the device and provide you information about how to handle it.
Keep this operating manual in a safe place for later use. Read this operating manual before
handling the device and follow the instructions.
NOTE
Disclaimer of liability
Please make sure that any person using the device has read and understood the instructions of
this operating manual before handling the device and that the instructions are adhered to in all
points. Non-observance of this operating manual might result in product damage, property
damage and/or personal injury.
Benning assumes no liability for damage and malfunctions resulting from the failure to observe
the instructions in this operating manual.
The devices are subject to continuous further development. Benning reserves the right to make
changes to the device’s design, configuration and technology. The information in this operating
manual corresponds to the state of technical knowledge at the time of printing. For this reason,
no claims for certain device characteristics can be derived from the contents of this operating
manual.
Information in this operating manual can be changed at any time without prior notice. Benning is
not obligated to make amendments to this operating manual or to keep it up to date.
Direct any technical questions to Technical Support [}page9].
Trademarks
All trade marks that are used are the property of their respective owners, even if they are not
separately marked as such.
1.2 History
Release number Amendments
04/2022 • Initial release
Table1: History

Introduction
1.3 Service & support
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1.3 Service & support
Please contact your specialty retailer or the BENNINGServiceCenter for any repair or service
work that might be required.
Technical support
Please contact our Technicalsupport for technical questions on handling the device.
Phone: +49287193-555
Fax: +49287193‑6555
E-Mail: [email protected]
Internet: www.benning.de
Returns management
Easily and conveniently use the BENNING returns portal for a quick and smooth returns
processing:
https://www.benning.de/service-de/retourenabwicklung.html
Phone: +49287193-554
E-Mail: [email protected]
Return address
BENNING Elektrotechnik und Elektronik GmbH & Co. KG
Retourenmanagement
Robert-Bosch-Str. 20
D - 46397 Bocholt

2.1 Warning system
Safety
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2 Safety
2.1 Warning system
This operating manual contains notes that must be taken into consideration for your personal
safety and in order to avoid injuries and damage to property. Warnings about your personal
safety and to prevent personal injuries are marked with a warning triangle. Warnings on sole
prevention of material damage are shown without a warning triangle. The warnings are shown
in descending order depending on the hazard level as follows.
DANGER
Extremely dangerous situation for humans
If you do not pay attention to this warning, irreversible or deadly injuries will occur.
WARNING
Hazard to humans
If you do not pay attention to this warning, irreversible or deadly injuries could occur.
CAUTION
Minor hazard to humans
If you do not pay attention to this warning, minor or moderate injuries could occur.
NOTICE
Danger to property, not to persons
If you do not pay attention to this warning, material damage could occur.
If multiple hazard levels occur, the warning for the highest respective hazard level will be used.
In addition, a warning about personal injuries can also include a warning about material
damage.
2.2 Standards applied
The device has been built and tested in compliance with the following standards and has left the
factory in perfectly safe condition.
• IEC/ DINEN61010-1 (VDE0411‑1)
• IEC/ DINEN61010-2-030 (VDE0411‑2‑030)
• IEC/ DINEN 61557-2 (VDE0413‑2)
• IEC/ DINEN 61557-4 (VDE0413‑4)
• IEC/ DINEN 61557-10 (VDE0413‑10)

Safety
2.3 Symbols used
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2.3 Symbols used
Symbols on the device
Symbol Meaning
Please observe the information provided in this operating manual in
order to avoid dangers.
Warning of electrical danger! Please observe the information provided
in this operating manual in order to avoid dangers.
CATIV Measuring categoryIV is applicable to testing and measuring circuits
connected to the feeding point of the low-voltage mains installation of a
building.
The device complies with EUdirectives.
At the end of product life, dispose of the unserviceable device via
appropriate collecting facilities provided in your community.
The device is provided with protective insulation (protection classII).
This symbol indicates the built-in fuse.
This symbol indicates the inserted batteries.
Please observe the operating manual.
(DC) direct voltage or direct current
(AC) alternating voltage or alternating current
Earth (voltage to earth)
Do not use the device in distribution networks with voltages >660V.
Table2: Symbols on the device
Symbols used in the operating manual
Symbol Meaning
General warning
Warning of electric voltage!
Table3: Symbols used in the operating manual

2.4 Intended use
Safety
5225 / 04/2022 enBENNING IT 10012
2.4 Intended use
Only use the device within the framework of the corresponding technical data. Any operating
conditions that deviate from this shall be considered as improper use. Solely the user of the
device shall be liable for any resulting damage.
In particular, note the following:
• In case of improper use, the liability and warranty claims become void. Solely the user of the
device shall be liable for any damage resulting from improper use. Uses not complying with
the intended use include e.g.:
– Use of components, accessories, spare or replacement parts that have not been
released and approved for the respective application by Benning
– Non-observance, manipulation, changes or misuse of the operating manual or the
instructions and notes contained therein
– Any form of misuse of the device
– Any use other than or beyond that described in this operating manual
• Warranty and liability claims are generally excluded if damage is due to force majeure.
• If any prescribed services are not performed regularly or not on time according to
manufacturer specifications during the warranty period, a decision about a warranty claim
can only be made once the findings are available.
Direct any questions to Technical Support [}page9].
Using the device
Please observe the following basic obligations when using the device:
• The device may only be used in a technically perfect and safe condition. Always check the
device for damages before using it.
• Make sure the personnel using the device is qualified for the respective task.
• Observe relevant regulations on occupational safety and health as well as those on
environmental protection.
• The device may only be used inside buildings and in dry environments.
• Do not use the device in potentially explosive environments.
• Use the device only in electric circuits up to overvoltage categoryCATIV with a conductor
for a maximum of 600V to earth.
• Use suitable (approved) safety measuring lines. For measurements in electric circuits of
overvoltage categoryCATIII orIV, the protruding conductive part of a contact tip of the
safety measuring line must not be longer than 4mm. Before measuring, attach the enclosed
protective caps onto the contact tips (marked with CATIII and CATIV).
• In order to prevent danger due to incorrect measurements, replace discharged batteries
immediately.
• In order to prevent any danger, replace a defective fuse immediately.
• In order to avoid mechanical damage, use the device with the protective rubber holster in
place.
• The measuring point must be free of voltage before the safety measuring lines are applied–
except for voltage measurements.

Safety
2.4 Intended use
5225 / 04/2022 en BENNING IT 100 13
WARNING
Dangerous voltage
Danger to life or serious injury is possible due to contact with high electric voltage in case of
incorrect operation.
• Do not touch the bare measuring probe tips of the safety measuring lines or the bare
contacts of the optional alligator clips, Only touch the safety measuring lines in the area
intended for your hands.
• Please note that dangerous testing voltages might be present at the device during insulating
resistance measurement. These might also be applied to the measuring circuit if safety
measuring lines are contacted.
• Connect the safety measuring lines to the correspondingly marked measuring jacks of the
device and check them for tight fit.
• Only use approved safety measuring lines.
• Attach the protective caps to the contact tips of the safety measuring lines (circuits of
overvoltage category CATIII orIV).
• When disconnecting the measuring circuit, first remove the live safety measuring line
(phase) and then the neutral safety measuring line from the measuring point.
WARNING
Opening the device
Danger to life or serious injury is possible due to contact with high electric voltage when opening
the device. The device might get damaged.
• Make sure that the device is free of voltage before opening the battery compartment.
• Do not open the device (except for the battery compartment).
• Please contact your specialty retailer or the returns management for any repairs [}page9].
Securing the device
If the device is not in a technically perfect and operationally safe condition, safe operation is no
longer guaranteed. Make sure that the following measures are taken:
• Switch off the device.
• Remove the device from the measuring point.
• Secure the device against unintentional operation.
The following characteristics indicate that safe operation is no longer guaranteed:
• The device (housing or safety measuring lines) shows visible damage or is damp/wet.
• The insulation of the safety measuring lines is damaged.
• The device does not work properly in compliance with regulations (e.g. errors during
measurements).
• The device shows recognisable consequences of prolonged storage under inadmissible
conditions.
• The device shows recognisable consequences of extraordinary stress due to transport.

2.5 Special types of risks
Safety
5225 / 04/2022 enBENNING IT 10014
2.5 Special types of risks
DANGER
Bare conductors or main line carriers
Danger to life or serious injury is possible due to contact with high electric voltage when working
with bare conductors or main line carriers.
• Please observe relevant regulations on occupational safety and health.
• If necessary, use appropriate protective equipment.
WARNING
Dangerous voltage
Danger to life or serious injury is possible due to contact with high electric voltage when working
on live components or equipment. Even low voltages from 30V‑AC and 60V‑DC on can be
dangerous to human life!
• Please observe relevant regulations on occupational safety and health.
• If necessary, use appropriate protective equipment.

Scope of delivery
2.5 Special types of risks
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3 Scope of delivery
The scope of delivery of the device includes the following components:
• 1x BENNINGIT100 insulation and resistance measuring device
• Set of safety measuring lines (item no.: 10230645)
Set of Ø4mm safety measuring lines, 6‑piece, red/ black, professional version, consisting
of:
– 2x measuring lines
– 2x test probes
– 2x alligator clips
• 1x compact protective pouch (item no: 10230646)
• 4x 1.5V alkaline batteries (AA/ IECLR6, NEDA15A)
• 1x fuse (FF 315mA, 1 000V, 10kA, integrated into the device for initial assembly)
• 1x operating manual
Optional accessories
• Set of safety measuring lines BENNINGTA1 (item no.: 044124)
Ø 4mm alligator clips, 2‑piece, red/ black, professional version, CATIII 1 000V, 36A
Figure1: BENNINGTA1
• Set of safety measuring lines BENNINGTA2 (item no.: 044125)
Set of Ø 4mm measuring lines, 6‑piece, red/ black, professional version, consisting of:
– Measuring lines (silicone) (CATIII 1 000V)
– Test probes (4mm measuring probe, CATII 1 000V)
– Alligator clips (CATIII 1 000V)
Figure2: BENNINGTA2

2.5 Special types of risks
Scope of delivery
5225 / 04/2022 enBENNING IT 10016
• Set of safety measuring lines BENNINGTA3 (item no.: 044126)
Set of Ø 4mm measuring lines, 8‑piece, red/ black, professional version, CATIII 1 000V,
consisting of:
– Measuring lines (silicone)
– Test probes (slender measuring probe)
– Grabber clips
– Alligator clips
Figure3: BENNINGTA3
• Set of Ø4mm safety measuring lines with 2mm measuring probe (item no.: 044146)
Ø4mm measuring lines, 2‑piece, red/ black, l=1.40m, with 2mm measuring probe,
CATIV 600V/ CATIII 1 000V (with protective caps), CATII 1 000V (without protective
caps)
Figure4: Ø 4mm measuring lines with 2mm measuring probe

Device description
4.1 Device structure
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4 Device description
4.1 Device structure
1 2
5
3
4
6
7
89
10
11
12
13
14
15
Figure5: BENNING IT100 device structure
1 Front panel of the device 2 Rear panel of the device
3 Battery compartment cover 4 Foldable stand
5 Protective rubber holster 6 Display illumination key
7 “LOCK” key 8 “+” jack
9 COM jack 10 Rotary switch
11 Blue key 12 “PIDAR” key
13 Red LED (high-voltage control
indicator)
14 “TEST” key
15 Digital display
Rear panel of the device
• Foldable stand
• Battery compartment with battery compartment cover
– The device is powered by four 1.5V alkaline batteries (AA/ IECLR6, NEDA15A).
– The device is protected against overload by means of a fuse (FF315mA, 1 000V,
10kA).
• Label on the battery compartment cover with notes and information about the device
• Serial number (label)

4.1 Device structure
Device description
5225 / 04/2022 enBENNING IT 10018
Rotary switch
You can set the desired test or measurement by means of the rotary switch.
1 2 34
5
6
Figure6: Rotary switch
1 Resistance measurement or continuity
test
2 Voltage measurement
3 Device switched off 4 Insulating resistance measurement with
selected voltage value
5 Setting of the rotary switch 6 Low-resistance measurement or null
balance
Digital display
The digital display is divided into different sections:
• Display of functions, units, dangerous contact voltage and battery status
• Display range for measured value: 4-digit liquid crystal display(LCD) with a font size of
19mm and decimal points. The highest display value is 9 999digits.
• Display range for testing voltage: 3.5-digit liquid crystal display(LCD) with a font size of
11mm. The highest display value is 1 999digits.
• Polarity display (automatic): Indicates a polarity contrary to the jack definition with “-”.
• Indication of the measuring range being exceeded (“>”): In this case, the displayed
measured value does not correspond to the actual value, but to the maximum value for the
selected measuring range.
The background lighting of the digital display can be switched on or off by means of the display
illumination key.

Device description
4.1 Device structure
5225 / 04/2022 en BENNING IT 100 19
1
2
3
4
5
6
7
8
Figure7: Digital display
1 Display of functions, dangerous contact
voltage and battery status
2 Display range for measured value
3 Unit of the measured value 4 Display of functions
5 Type and unit of testing voltage 6 Display range for testing voltage
7 Polarity 8 Measured value outside measuring
range
Description of symbols:
Symbol Description
Battery status: Indicates the state of charge of the batteries (max. 3segments).
The batteries are discharged as soon as all segments have disappeared.
Auto-Power-OFF
PI Polarisation index measurement enabled
DAR Dielectric absorption ratio measurement enabled
ZERO Null balance enabled
ACvoltage measurement enabled
DCvoltage measurement enabled
High-voltage control indicator: Appears if the device detects the presence of a
dangerous voltage (>2V‑AC/ V‑DC or >30V‑AC/ V‑DC depending on the
measuring function).
Continuity test enabled
TEST Testing voltage applied (during low-resistance or insulating resistance
measurement)
LOCK “LOCK” function enabled
Table4: Description of symbols on the digital display

4.2 Functions
Device description
5225 / 04/2022 enBENNING IT 10020
4.2 Functions
Use the rotary switch to switch the device on (desired measuring function) or off (“OFF”).
The device confirms each operation of keys and the rotary switch with an acoustic signal.
Invalid keystrokes are confirmed with a double beep. The device switches off automatically after
approx. 10minutes (APO, Auto-Power-Off). Please note that during a low-resistance or
insulating resistance measurement the timer is disabled (e.g. when the “LOCK”function is
enabled). To switch the device back on after an Auto-Power-Off, first set the rotary switch to
switch position “OFF” and then set the desired measuring function.
4.2.1 “TEST” key
Press the “TEST”key to start the corresponding measurement depending on the switch position
of the rotary switch and to stop it depending on the measuring function (e.g. when the
“LOCK”function is enabled). By pressing and holding the “TEST”key, the respective
measurement remains enabled until the key is released.
• Low-resistance measurement
• Insulating resistance measurement
– Insulating resistance
The device outputs a high testing voltage during the measurement and measures the
insulating resistance with this testing voltage.
– Polarisation index(PI)
– Dielectric absorption ratio(DAR)
4.2.2 High-voltage warning light
The high-voltage warning light is a redLED and lights up in the following cases:
• The device detects the presence of a dangerous voltage (depending on the measuring
function):
– Insulating resistance measurement: >30V‑AC/ V‑DC
– Low-resistance measurement: >2V‑AC/ V‑DC
– Voltage measurement: >30V‑AC/ V‑DC
• The batteries are discharged.
In addition, the high-voltage control indicator is shown on the digital display.
4.2.3 Display illumination key
Press the display illumination key to switch the background lighting of the digital display on or
off. When switching it on, you can choose between 2functions. It is possible at any time to
switch the background lighting off manually.
• Press once: The background lighting switches off automatically after 30seconds.
• Press and hold for approx. 2seconds (confirmation by another acoustic signal): The
background lighting remains switched on until Auto-Power-Off.