PCE Instruments PCE-IT100 User manual

© PCE Instruments
PCE-IT100 Insulation Tester
User Manual
User manuals in various languages (français,
italiano, español, português, nederlands, türk, polski,
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product search on: www.pce-instruments.com
Last change: 7 October 2019
v1.0
English

© PCE Instruments
Contents
1Safety notes........................................................................................... 1
1.1 Safety symbols................................................................................................................. 2
1.2 Safety categories ............................................................................................................. 3
2Delivery contents ..................................................................................4
3Specifications........................................................................................4
4Device description ................................................................................7
5Turn on meter........................................................................................8
6Connect the test leads..........................................................................8
6.1 Set zero point................................................................................................................... 8
7Insulation measurement.......................................................................8
7.1 Measuring AC motors....................................................................................................... 8
7.2 Measuring DC motors ...................................................................................................... 8
7.3 Measuring insulated cables.............................................................................................. 8
8Continuity test/resistance measurement ........................................... 9
9Voltage measurement AC/DC .............................................................. 9
10 Automatic Power Off function ............................................................. 9
11 Keys........................................................................................................9
11.1 Hold reading..................................................................................................................... 9
11.2 MAX/MIN.......................................................................................................................... 9
11.3 Freehand measurement (LOCK key)................................................................................ 9
12 Backlight..............................................................................................10
13 Replace the batteries.......................................................................... 10
14 Replace the fuse.................................................................................. 10
15 Warranty...............................................................................................10
16 Disposal ...............................................................................................10

© PCE Instruments
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1 Safety notes
Please read this manual carefully and completely before you usethe device for the first time. The
device may only be used by qualified personnel and repaired by PCE Instruments personnel.
Damage or injuries caused by non-observance of the manual are excluded from our liability and
not covered by our warranty.
•The device must only be used as described inthis instruction manual.If used otherwise,
this can cause dangerous situations for the user and damage to the meter.
•The instrument may only be used if the environmental conditions (temperature, relative
humidity, …) are within the ranges stated in the technical specifications. Do not expose
the device to extreme temperatures, direct sunlight, extreme humidity or moisture.
•Do not expose the device to shocks or strong vibrations.
•The case should only be opened by qualified PCE Instruments personnel.
•Never use the instrument when your hands are wet.
•You must not make any technical changes to the device.
•The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner,
no abrasives or solvents.
•The device must only be used with accessories from PCE Instruments or equivalent.
•Before each use, inspect the case for visible damage. If any damage is visible, do not
use the device.
•Do not use the instrument in explosive atmospheres.
•The measurement range as stated in the specifications must not be exceeded under
any circumstances.
•Non-observance of the safety notes can cause damage to the device and injuries to
the user.
•Remove the batteries when the meter is not used for more than 60 days.
•Turn off the meter when not in use.
Do not use the full measurement range.
•Set your meter before connecting the test leads.
•Before replacing the batteries or the fuse, turn off the meter and remove the test leads.
•Be particularly careful with voltages over 30V AC RMS, 42 V AC peak or 60V DC to
avoid electric shocks.
•Make sure the test object does not carry any voltage when making a resistanceor diode
test.
•Do not touch the measuring tips.
•Always use personal protective equipment when measuring live wires to avoid an
electric arc.
•Do not use the meter when it no longer works flawlessly.
We do not assume liability for printing errors or any other mistakes in this manual.
We expressly point to our general guarantee terms which can be found in our general terms of
business.
If you have any questions please contact PCE Instruments. The contact details can be found at
the end of this manual.

© PCE Instruments
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1.1 Safety symbols
There are several icons on the meter which mean the following:
This icon can be found next to another symbol or a connection and is a
reference to the user manual.
This icon indicates that high voltage could be present. Shock hazard!
Double insulation
Earth (ground)
DC (direct current)

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1.2 Safety categories
Category
Short description
Typical applications
CAT II
One-phase measurements, e. g.
of sockets or cables
Household appliances, electric power tools,
measuring points 10 m away from a CAT III
source, measuring points 20 m away from a
CAT IV source
CAT III
Three-phase measurements or
one-phase measurements, e. g.
of light circuits in commercial
buildings
Motors, switches, sub-distributors in a three-
phase circuit, light circuits in commercial
buildings, supply cables for industrial plants,
electrical appliances or connections near a
CAT III source
The measuring category (CAT) arise from the combination of the meter, the test leads and the
accessories. To know what CAT to work with, you must find out what component has the lowest
CAT and use this CAT.
Important: When you have removed the insulation from the test leads, these will correspond to
CAT II.
Fig. 1: Insulated tip
Fig. 2: Uninsulated tip

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2 Delivery contents
1 x insulation tester PCE-IT100
1 x set of test leads
1 x alligator clip with 1 m cable
6 x 1.5 V AA battery
1 x carrying strap
1 x user manual
1 x carrying case
3 Specifications
The accuracies have been determined at an ambient temperature of 23 °C ±5 °C and 80 % RH.
Resistance measurement
Measurement range
40.00 Ω
400.0 Ω
Resolution
0.01 Ω
0.1 Ω
Accuracy
±(1.2 % + 3 digits)
Overvoltage protection 250 V RMS
Measuring voltage max. 5.8 V
Continuity test
Icon
Resolution
0.01 Ω
Audible signal
≤35 Ω
Short circuit current
≥200 mA
Overvoltage protection 250 V RMS
Measuring voltage max. 5.8 V
DC voltage measurement
Measurement range
1000 V
Resolution
1 V
Accuracy
±(0.8 % 3 digits)
Input resistance
10 MΩ
Overvoltage protection 1000 V RMS
AC voltage measurement (40 … 400 Hz)
Measurement range
750 V
Resolution
1 V
Accuracy
±(1.2 % 10 V)
Input resistance
10 MΩ
Overvoltage protection 750 V RMS

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Insulation measurement at 125 V (0 … ±10 %)
Measurement range
0.125 … 4.000 MΩ
4.001 … 40.00 MΩ
40.01 … 400.0 MΩ
400.1 … 4000 MΩ
Resolution
0.001 MΩ
0.01 MΩ
0.1 MΩ
1 MΩ
Accuracy
±(2 % + 10 digits)
±(2 % + 10 digits)
±(4 % + 5 digits)
±(5 % + 5 digits)
Test current
1 mA at 125 kΩ
Short circuit current
≤1 mA
Insulation measurement at 250 V (0 … ±10 %)
Measurement range
0.250 … 4.000 MΩ
4.001 … 40.00 MΩ
40.01 … 400.0 MΩ
400.1 … 4000 MΩ
Resolution
0.001 MΩ
0.01 MΩ
0.1 MΩ
1 MΩ
Accuracy
±(2 % + 10 digits)
±(2 % + 10 digits)
±(5 % + 5 digits)
±(4 % + 5 digits)
Test current
1 mA at 125 kΩ
Short circuit current
≤1 mA
Insulation measurement at 500 V (0 … ±10 %)
Measurement range
0.500 … 4.000 MΩ
4.001 … 40.00 MΩ
40.01 … 400.0 MΩ
400.1 … 4000 MΩ
Resolution
0.001 MΩ
0.01 MΩ
0.1 MΩ
1 MΩ
Accuracy
± (2 % + 10 digits)
± (2 % + 10 digits)
± (2 % + 5 digits)
± (4 % + 5 digits)
Test current
1 mA at 500 kΩ
Short circuit current
≤1 mA

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Insulation measurement at 1000 V (0 … ±10 %)
Measurement range
1.000 … 4.000 MΩ
4.001 … 40.00 MΩ
40.01 … 400.0 MΩ
400.1 … 4000 MΩ
Resolution
0.001 MΩ
0.01 MΩ
0.1 MΩ
1 MΩ
Accuracy
±(3 % + 10 digits)
±(2 % + 10 digits)
±(2 % + 5 digits)
±(4 % + 5 digits)
Test current
1 mA at kΩ
Short circuit current
≤1 mA
General specifications
Continuity test
Audible signal at resistance <35 Ω
Battery indication
„“ is displayed when battery voltage is nolonger sufficient
Excess of measurement range
“OL“ is displayed
Sampling rate
2.5 measurements/s (0.4 Hz)
Zero point
Manual adjustment possible
Power supply
6 x 1.5 V AAA
Fuse
10 A / 600 V (5 x 20 mm)
Operating conditions
0 ... +40 °C, <80 % RH
32 … 104 °F
Storage conditions
-10 ... +60 °C, <70 % RH
14 … 140 °F
Operating altitude
2000 m
Dimensions
200 x 92 x 50 mm
Weight
700 g with batteries
Standards
IEC10101, CAT III 1000 V, pollution degree 2

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4 Device description
1. LCD
2. MAX/MIN, HOLD key
3. LOCK key
4. Zero point and backlight key
5. TEST key
6. Rotary function switch
7. VΩinput jack
8. Ground input jack
9. Strap holder
10. Battery compartment

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5 Turn on meter
To turn on the meter, select the desired functionby turning the rotary switch. The meter will power
on directly. To turn off the meter, select “OFF“ with the rotary switch.
6 Connect the test leads
Connect the red test lead to the VΩinput jack. Connect the black test lead to the COM input jack.
6.1 Set zero point
To reset the zero point, choose “400Ω“ with the rotary switch. Now hold the measuring tips against
each other. Then press “ZERO“. The zero point has been reset.
Note: Zeroing is only valid for the “400Ω“ measurement and expires when you select a different
measuring function.
7 Insulation measurement
To make an insulation measurement, select the desired voltage with the rotary switch. Here you
can select a test voltage of 125 V, 250 V, 500 V or 1000 V. Now connect the test leads to your
sample. Press the TEST key to generate the desired test voltage directly. To make a
measurement, press and hold the TEST key. The measurement is finished when you release the
key. Bear in mind that some residual voltage may be present in the meter.
The reading will be shown in the upper part of the display. The test voltage is shown in the lower
part of the display. The measurement range is selected by the meter automatically.
Note: If the sample carries a voltage of at least 30 V, the meter will display “>30 V“ and “ “, a
beep sound will be audible and the meter will not make a measurement. Therefore, it is important
to remove any external voltages before each measurement.
7.1 Measuring AC motors
Interrupt the voltage supply of the motor by disconnecting the connection cable of the motor. In
case there are switches on the motor, these must be turned on. To measure the insulation now,
connect one test lead to the supply cable and the other one to the motor.
7.2 Measuring DC motors
Interrupt the voltage supply of the motor by disconnecting the connection cable of the motor. In
case there are switches on the motor, these must be turned on. Now connect one test lead to the
PE connection of the connection cable and the second one to, for example, the carbon brushes
to measure the insulation.
7.3 Measuring insulated cables
To measure the insulation of a cable, make sure that the cable ends are open. Now make a
measurement by measuring each cable core with every other cable core.