MARTINDALE IN2103 User manual

16th Edition Testers
Accessories
 Calibration Equipment
Continuity Testers
Electricians’ Kits
Environmental Products
Full Calibration & Repair Service
Fuse Finders
Digital Clamp Meters
Digital Multimeters
Labels
Microwave Leakage Detectors
Motor Maintenance Equipment
Multifunction Testers
Non-trip Loop Testers
Pat Testers & Accessories
Phase Rotation Testers
Proving Units
Socket Testers
Thermometers & Probes
Test Leads
Voltage Indicators
Specialist Metrohm Testers (4 & 5kV)
Specialist Drummond Testers
Check out what else you can get from Martindale:
Martindale Electric Company Limited
Metrohm House, Penfold Trading Estate, Imperial Way, Watford WD24 4YY, UK
Tel: [phone] Fax: [phone]
E-mail: [e-mail]
Website: www.martindale-electric.co.uk
© Martindale Electric Company Ltd. 2006
Registered in England No. 3387451. Rev 4 LITIN2103
IN2103 INSULATION TESTER
INSTRUCTION
MANUAL
MARTINDALE
ELECTRIC
Trusted by Professionals
Trusted by Professionals

GENERAL SAFETY INFORMATION: Always read before proceeding.
Warning
These instructions contain both information and warnings that are necessary for
the safe operation and maintenance of this product. It is recommended that you
read the instructions carefully and ensure that the contents are fully understood.
Failure to understand and to comply with the warnings and instructions can result
in serious injury, damage or even death.
In order to avoid the danger of electrical shock, it is important that proper safety
measures are taken when working with voltages exceeding 30V AC RMS, 42V AC
peak or 60V DC.
This product must only be used by a competent person capable of interpreting the
results under the conditions and for the purposes for which it has been
constructed. Particular attention should be paid to the Warnings, Precautions and
Technical Specifications. Always check the unit is in good working order before
use and that there are no signs of damage to it. Do not use if damaged.
Where applicable other safety measures such as use of protective gloves, goggles
etc. should be employed.
Please keep these instructions for future reference. Updated instructions and
product information are available at: www.martindale-electric.co.uk/instruct
REMEMBER: SAFETY IS NO ACCIDENT
MEANING OF SYMBOLS:
equipment complies with relevant EU Directives
alternating current (ac)
earth (ground) terminal
direct current
equipment protected by double or reinforced insulation (Class II)
caution - risk of danger & refer to instructions
caution - risk of electric shock
end of life disposal of this equipment should be
in accordance with relevant EU Directives
For user notes

Thank you for buying one of our products. For safety and full
understanding of its benefits please read this manual before
use. Technical support is available from 01923 441717 and
[e-mail].
CONTENTS
1 Introduction 2
1.1 Inspection 2
1.2 Description 2
2 Product Specific Safety Information 4
3 Operation 5
3.1 Installing or Replacing Batteries 5
3.2 Replacing Fuses 6
3.3 How it Works 6
4 Maintenance 13
4.1 Calibration 13
4.2 Cleaning 13
4.3 Repair & Service 14
4.4 Storage Conditions 15
5 Warranty 15
Specifications
For user notes
1

1. INTRODUCTION
This manual contains information and warnings which must be
followed to ensure safe operation of the IN2103.
1.1 Inspection
Examine the shipping carton for any sign of damage. Inspect the
unit and any accessories for damage. If there is any damage then
consult your distributor immediately.
You should have the following items:
1. IN2103
2. TL47A lead set
3. Instruction manual
4. Protective carry case with strap
5. Six LR6 alkaline batteries
6. Spare fuse (located in battery compartment)
1.2 Description
The IN2103 Digital Insulation and Continuity Tester is designed to
perform testing in accordance with international standards,
including BS7671. Insulation testing can be undertaken at
250/500/1000V DC. The tester is powered by six 1.5V alkaline
batteries type LR6. To install or replace batteries refer to section
3.1
WARNING
READ "SAFETY INFORMATION" BEFORE USING THIS METER
2
))) test
Auto-Discharge: when TEST button released
Buzzer: <30Ω
Buzzer disable option: yes
kΩtest
Auto-Discharge: when TEST button released
Insulation test
Short circuit current: <1.5mA
Auto-Discharge: when TEST button released
Buzzer disable option: yes
Range Resolution Accuracy
999.9Ω0.1Ω±(3% rdgs +5d)
Range Resolution Accuracy
1999kΩ0.1Ω<999.9Ω
1Ω>1000Ω
±(3% rdgs +5d)
Voltage Range Resolution Accuracy
250V
500V
1000V
4/40/400/1000MΩ
4/40/400/4000MΩ
4/40/400/5000MΩ
1kΩ/10kΩ/100kΩ/1MΩ±(3% rdgs +5d)

1. VΩ- Input Terminal
This is the positive terminal for voltage and resistance
measurements. Connection is made to it using the red test lead.
2. COM - Common Terminal
This is the negative (Ground) terminal. Connection is made to it
using the black test lead.
3. Shift
Selects the second function of other soft keys.
4. Display
5. Rotary switch
Selects the desired range.
6. Soft keys
Allow access to advanced functions.
7. TEST button
Used to perform all tests apart from voltage measurement.
3
2
3
6
4
7
5
1
KΩ
APO
DAR
PILIMITS
ZERO A - H
SHIFT
8.8.8.8
-8.8.8.8
PI DAR AUTO HOLD SHIFT LIMIT
88
READ
MEM
0
1
0
0
2
0
0
3
0
0
4
0
0
5
0
0
6
0
0
7
0
0
8
0
0
9
0
0
x
1
0
0
0
0
0
.
5
1
2
3
4
5
6
7
1
0
1
5
2
0
3
0
5
0
1
0
0
APO
mGΩ
KMΩ
V
V
z
PI (Polarization Index)
DAR (Dielectric Absorption Ratio)
Auto Power Off: user selectable (default 5 mins)
APO (Auto Power Off) disable option
99-result Memory
Safety: Complies with BS EN 61010 and BS EN 61557
Overvoltage Category: CAT III 600V, Pollution Degree 2.
Altitude: Up to 2000M
Protection: IP44
Not for use in wet conditions.
Operating Environment: 0°C to 40°C at < 70% relative humidity
Storage Temperature: -20°C to 60°C, 0 to 80% R.H. with batteries
removed from tester.
Dimensions: 90 x 210 x 54mm
Voltage test
Voltage warning: >30V
Continuity test
Short circuit current:>200mA
Auto-Discharge: when TEST button released
Range Resolution Accuracy
600V AC/DC 1V ±(3% rdgs +5d)
Range Resolution Accuracy
40Ω0.01Ω±(3% rdgs +5d)

2. PRODUCT SPECIFIC SAFETY INFORMATION
Safety: Complies with BS EN 61010 and BS EN 61557
Overvoltage Category: CAT III 600V, Pollution Degree 2.
This tester has been designed with your safety in mind, however,
no design can completely protect against incorrect use.
Do not touch exposed wiring, connections or other live parts of
an electrical circuit.
When using this tester to monitor high voltages, turn off the
power before connecting the tester.
If in doubt check the circuit first before touching it.
Do not use cracked or broken test leads.
Do not use in wet conditions.
Note: Capacitance Discharge
On completion of an insulation test, the tester should remain
connected to the circuit under test for a short period after releasing
the TEST button. The TEST button if latched must be released.
This discharges any capacitance via the tester. Before
disconnecting the tester ensure indicated voltage is zero.
Warning
Before use check the unit for cracks or any other damage. Make
sure the unit is free from dust, grease and moisture. Also check any
associated leads and accessories for damage. Do not use if
damaged.
4
WARNING
THIS TESTER SHOULD ONLY BE USED BY A COMPETENT AND
SUITABLY TRAINED PERSON.
REMEMBER - SAFETY IS NO ACCIDENT!
Specification
IN2103
Insulation Tester
MARTINDALE
ELECTRIC
General:
Digital Display: 5000 count
Overrange: OL is displayed
Analogue Bargraph: 51 segment
Low battery indication: the symbol is displayed when the
battery voltage drops below the operating level.
Measurement rate: 2.5 times per second, nominal.
Backlight
Auto Zero & Autohold
User-Settable Limits
Pass/Fail Indicators

3. OPERATION
3.1 Installing or Replacing Batteries
1. Disconnect the test leads from any live source, turn the rotary
switch to OFF and remove the test leads from the input terminals.
2. Remove the battery cover using a Phillips screwdriver.
3. Install six LR6s (alkaline) battries.
4. Replace the battery cover.
3.2 REPLACING FUSES
The condition of the fuse can be checked as follows:
Unplug the test leads.
Select continuity (KΩ, or ))), or 40Ω), press the TEST button. If
the fuse is defective the display will read FUSE Err. The fuse is
located in the battery compartment and is used to protect the
tester if the leads are connected to a live circuit when the
continuity/resistance ranges are selected.
Switch the tester off and release the TEST button. Remove the
battery cover using a Phillips screwdriver and carefully remove the
failed fuse from the metal clips, fit the correct replacement and
re-fit cover.
DO NOT OPERATE THE TESTER WITH THE BATTERY COVER
REMOVED.
WARNING
When the meter shows the " " sign the batteries must be replaced to
maintain correct operation. Follow the procedure over.
5
16
Since some jurisdictions do not allow limitation of the term of an
implied warranty, or exclusion or limitation of incidental or
consequential damages, the limitations and exclusions of this
warranty may not apply to every buyer. If any part of any provision of
this warranty is held invalid or unenforceable by a court or other
decision-maker of competent jurisdiction, such holding will not affect
the validity or enforceability of any other provision or other part of that
provision.
Nothing in this statement reduces your statutory rights.

3.3 How it Works
VOLTAGE MEASUREMENTS
Ensure the TEST button is released.
Insert the red test lead in VΩ, and the black lead in COM. Connect
the red and black leads across the circuit to be measured - the
measured voltage will be displayed.
When a voltage higher than 30V is detected, the buzzer sounds
and the high voltage indicator ( ) will blink in the upper-right
corner of the display.
ZERO KEY
When measuring low resistances, using the ))) and 40Ωranges,
compensation for the resistance of the test leads is needed:
Set rotary switch to desired low resistance range, short test leads
by holding them together or, if using croc clips, clipping them
together. Press and hold / latch the TEST button, the resistance of
the leads will be displayed, then press the ZERO soft key to carry
out the compensation; a triangle is shown in the middle of the
display. Press the ZERO soft key again to remove the
compensation.
CONTINUITY MEASUREMENT
Ensure circuit is not live by taking a voltage measurement
Set rotary switch to 40Ωrange. Insert red test lead in VΩ, and
black lead in COM. Connect the red and black leads to the circuit
to be measured and press the TEST button. The measured
resistance will be displayed. If OL is displayed this indicates the
resistance being measured is greater than the continuity range of
the tester.
4.4 Storage Conditions
The instrument should be kept in warm dry conditions away from
direct sources of heat or sunlight, and in such a manner as to
preserve the working life of the unit. It is strongly advised that the
unit is not kept in a tool box where other tools may damage it.
5. WARRANTY AND LIMITATION OF LIABILITY
This Martindale product is warranted to be free from defects in
material and workmanship under normal use and service. The
warranty period is 2 years and begins on the date of receipt by the
end user. This warranty extends only to the original buyer or end-
user customer, and does not apply to fuses, disposable batteries,
test leads or to any product which, in Martindale’s opinion, has
been misused, altered, neglected, contaminated, or damaged by
accident or abnormal conditions of operation, handling or storage.
Martindale authorised resellers shall extend this warranty on new
and unused products to end-user customers only but have no
authority to extend a greater or different warranty on behalf of
Martindale.
Martindale's warranty obligation is limited, at Martindale's option, to
refund of the purchase price, free of charge repair, or replacement of a
defective product which is returned to Martindale within the warranty
period.
This warranty is the buyer’s sole and exclusive remedy and is in
lieu of all other warranties, expressed or implied, including but not
limited to any implied warranty of merchantability or fitness for a
particular purpose. Martindale shall not be liable for any special,
indirect, incidental or consequential damages or losses, including
loss of data, arising from any cause or theory.
615

RESISTANCE MEASUREMENT WITH BUZZER
Ensure circuit is not live by taking a voltage measurement
Set rotary switch to ))) range. Insert red test lead in VΩand
black lead in COM. Connect the red and black leads to the circuit
to be measured and press the TEST button. The measured
resistance will be displayed, and if the resistance is below 30Ω, the
buzzer will sound. If OL is displayed this indicates the resistance
being measured is greater than the resistance range of the tester.
The buzzer can be toggled off and on by pressing the ))) key.
RESISTANCE MEASUREMENT
Ensure circuit is not live by taking a voltage measurement
Set rotary switch to KΩrange. Insert red test lead in VΩ, and
black lead in COM.Connect the red and black leads to the circuit to
be measured and press the TEST button. The measured
resistance will be displayed. If OL is displayed this means the
resistance being measured is greater than the resistance range of
the tester.
INSULATION RESISTANCE MEASUREMENT (MΩ)
For safety reasons, please adhere to the following procedure for
Insulation Resistance Measurement:
Ensure that the TEST button is unlatched and is released. Turn the
rotary switch to select the voltage to be applied - 250V, 500V or
1000V DC. Insert red test lead in VΩ, and black lead in COM.
Connect the black and red test leads to the circuit to be measured.
Note: If a voltage higher than 30V is present on the circuit under
test, the buzzer sounds and the high voltage indicator ( ) blinks
in the upper-right corner of the display. In this event, remove the
test leads from the circuit under test and proceed with caution to
investigate the source of the voltage on the circuit under test.
4. MAINTENANCE
4.1 Calibration
To maintain the integrity of measurements made using your
instrument, Martindale Electric recommends that it is returned at
least once a year to an approved Calibration Laboratory for
recalibration and certification.
Martindale Electric is pleased to offer you this service. Please
contact our Service Department for details.
E: [e-mail]
T: 01923 650660
4.2 Cleaning
The unit may be cleaned using a soft dry cloth. Do not use
moisture, abrasives, solvents, or detergents, which can be
conductive.
4.3 Repair & Service
There are no user serviceable parts in this unit other than those
that may be described in section 3. Return to Martindale Electric if
faulty. Our service department will quote promptly to repair any
fault that occurs outside the guarantee period.
Before the unit is returned, please ensure that you have checked the:
- batteries
- fuses
- leads
714

Press the TEST button to apply the test voltage. This button can
be turned clockwise while pressed to latch it. Allow several
seconds for the reading to stabilise. The test voltage is shown in
the lower-right corner of the display.
Note: On completion of an insulation test, the TEST button, if
latched has to be manually released to discharge the circuit under
test. In the interest of safety the user should be aware of this.
If OL is displayed this means that the resistance being measured
is greater than the measuring range of the tester.
When a low resistance is measured, the test voltage drops; if it
drops to lower than 80V, a blinking indication of 0000 is displayed.
The buzzer can be toggled off and on by pressing the ))) key.
INSULATION RESISTANCE ADVANCED FUNCTIONS
PI (Polarization Index) key
Definition of PI
The polarization index is the ratio of the insulation resistance
measured after one minute and ten minutes. For good insulation,
the insulation resistance increases with time as the capacitive
leakage current and absorption current decrease. The higher the
PI value, the better the insulation. The quality of the insulation is
excellent for a PI that is greater than 4.0, good for 3.0 - 4.0, fair for
2.0 - 2.9, suspect for 1.5 - 1.9, poor for 1.0 - 1.4, and dangerous
for less than 1.0.
Setting Lower Limit
After exiting the Upper Limit set up, the Lower Limit set up is
automatically entered. The display shows 0000, (if the lower limit
has been changed previously another number may be displayed)
with the right hand digit blinking. LIMIT and a downward triangle 
also blink in the middle-right, and lower-left, respectively on the
display. Use and to select the digit to be changed, and
increase or decrease the value with and . After adjusting the
value, press YES to set the Lower Limit or CANCEL to discard the
changes, and exit Set Up.


813

Operating procedure for PI
Set rotary switch to 250/500/1000V. Clear the memory before
making a PI measurement. Press the PI key to enable
measurement, PI is shown on the display. After the TEST button
is pressed and latched, HVDC (High Voltage DC) is applied for a
10 minute period. 10 seconds after the voltage is applied, the
tester starts to measure and record data - every 10 seconds for
the first minute, and every minute thereafter. (6 measurements are
taken in the first minute and 9 in the remainder.) PI = (Last Value) /
(6th Value), stored in number 00 of PI Memory.
DAR (Dielectric Absorption Ratio) Key
Definition of DAR
DAR is the ratio of the insulation resistance measured after 30
seconds and 60 seconds. This is a faster version of the PI
measurement, which is useful when time is short. For good
insulation, the insulation resistance increases with time as the
capacitive leakage current and absorption current decrease. The
higher the DAR value, the better the insulation property. The
quality of the insulation is excellent for a DAR greater than 4.0,
good for 3.0 - 4.0, fair for 2.0 - 2.9, suspect for 1.5 - 1.9, poor for
1.0 - 1.4, and dangerous for less than 1.0.
Operating Procedure for DAR
Set rotary switch to 250/500/1000V. Clear memory before making
a DAR measurement. Press the DAR key to enable a
measurement, DAR is shown on the display. After the TEST
button is pressed and latched, HVDC is applied for 60 seconds,
with measurements and data taken 10 seconds after the voltage is
applied, and then every 10 seconds. (A total of 6 measurements
with data are taken.) DAR = (Last Value) / (3rd Value), stored in
location 00 of DAR memory.
LIMITS key
Press this key to enable or disable the "out of limits" alarm. This
function causes an alarm to sound if the measured value is not
within preset limits. High and Low limits can be set on each range
using the set up key.
SETUP Function
Press SHIFT and then SETUP to set the auto power off time, the
upper and lower limits.
Setting Auto Power Off Time
Press SHIFT then SETUP, the display shows 0005 (indicating 5
mintues. If the APO time has been changed previously another
number may be displayed), with the right hand digit blinking and
APO blinking in the upper right corner of the display. Use and
to select the digit to be changed, and increase or
decrease the number with and .
After adjusting the value, press YES to set the APO time, or
CANCEL to discard the changes, and proceed to set the upper
limit.
Setting Upper Limit
After exiting the APO set up, the Upper Limit set up is
automatically entered. The display shows 9999, (if the upper limit
has been changed previously another number may be displayed)
with the right hand digit blinking. LIMIT and an upward triangle 
also blink in the middle-right, and lower-left, respectively on the
display. Use and to select the digit to be changed, and
increase or decrease the value with and . After adjusting the
value, press YES to set the Upper Limit or CANCEL to discard the
changes, and proceed to set the lower limit.




912

Note: It is a good idea to do a battery check before making PI and
DAR measurements.
BATT CHECK
Set rotary switch to BATT CHECK range. Press the TEST button,
the display shows the battery voltage as a % and as a voltage.
When the battery voltage is lower than 6.6V, the symbol " "
appears and the batteries should be replaced. (See 3.1 page 5)
SPECIAL FUNCTIONS
SHIFT
Press the SHIFT key to use the second functions of other soft
keys. When enabled, SHIFT is shown in the middle-right of the
display. Press SHIFT key again to exit mode.
SAVE Function
For resistance and insulation resistance, press SHIFT and then
SAVE (PI) to record the measured data and time into a memory
slot from 00 to 99. MEM and the memory location are shown at
the upper-left corner of the display.
Data cannot be saved if the memory is full. The memory must be
cleared before further data can be saved. Voltage measurement
data cannot be stored.
MEM View
Set rotary switch to BATT CHECK. Press SHIFT key - 00 READ
MEM is shown in the upper-left corner of the display. Scroll
through records with and  keys. Memory locations are from 00
to 99. Use the and keys to change MEM view to the PI or
DAR test results, use the and  keys to scroll through the test
data.


The PI memory locations are 00 to 15 in the PI MEM view,
location 00 is the PI value. The other 15 are records of individual
tests, taken as part of the PI measurement set.
The DAR memory locations are 00 to 06 in the DAR MEM view,
location 00 is the DAR value. The other 6 are records of individual
tests taken as part of the DAR measurement set.
MEM CLR Function
To clear the memory press CANCEL whilst in the MEM VIEW
screen, then YES to confirm, or CANCEL to abort memory
clearance. All data, including saved, PI and DAR test data, will be
cleared completely after the confirmation.
A-H (Auto-Hold) key
Press the A-H key to enable or disable the auto-hold function
whilst performing a test. When enabled, AUTO HOLD is shown in
the middle of the display with HOLD blinking. With auto-hold
enabled the HOLD stops blinking and the buzzer sounds when a
stable measurement occurs. After the TEST button is released the
measured value is displayed and HOLD resumes blinking. Press
the A-H key to delete the value held on the display.
APO (Auto Power Off) key
Press this key to enable/disable the auto power off function. When
auto power off is enabled, the tester turns off after a set time
without operation. The default interval is 5 minutes. Refer to the
Set Up section to change the time interval.
Back Light key
Press this key to turn the back light on or off.
10 11