Megger S1-568 User manual

User Guide
S1-568 / S1-1068 / S1-1568
5 kV, 10 kV and 15 kV High Performance
DC Insulation Resistance Testers

This document is copyright of:
Megger Limited, Archcliffe Road, Dover, Kent CT17 9EN. ENGLAND
T [phone] F [phone] www.megger.com
Megger Ltd reserves the right to alter the specification of its products from time to time without
notice. Although every effort is made to ensure the accuracy of the information contained within
this document it is not warranted or represented by Megger Ltd. to be a complete and up - to - date
description.
For Patent information about this instrument refer to the following web site:
megger.com/patents
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S1-568 / S1-1068 / S1-1568
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Declaration of Conformity
Hereby, Megger Instruments Limited declares that radio equipment manufactured by Megger Instruments Limited
described in this user guide is in compliance with Directive 2014/53/EU. Other equipment manufactured by Megger
Instruments Limited described in this user guide is in compliance with Directives 2014/30/EU and 2014/35/EU where they
apply.
The full text of Megger Instruments EU declarations of conformity are available at the following internet address:
megger.com/eu-dofc
This manual supersedes all previous issues of this manual. Please ensure that you are using the most recent issue of this
document. Destroy any copies that are of an older issue.
www.megger.com S1-568 / S1-1068 / S1-1568 iii

Contents
1. Safety warnings ............................................................................................................................ 2
1.1. BATTERY WARNINGS...............................................................................................................................3
2. Symbols Used on the Instrument.................................................................................................4
2.1. WEEE Directive ........................................................................................................................................5
2.2. Battery Disposal.......................................................................................................................................5
3. General Description ...................................................................................................................... 6
3.1. Features....................................................................................................................................................6
4. Instrument Controls and Indicators .............................................................................................7
5. Preparations for Use .....................................................................................................................8
5.1. Initial instructions....................................................................................................................................8
5.2. Power lead and battery charging...........................................................................................................8
5.3. Power lead connection table..................................................................................................................8
5.4. Functional verification ............................................................................................................................8
5.5. Calibration ...............................................................................................................................................8
5.6. Storage..................................................................................................................................................... 8
6. Operating Instructions..................................................................................................................9
6.1. General operation ...................................................................................................................................9
6.2. Breakdown vs. burn mode......................................................................................................................10
6.3. Voltmeter .................................................................................................................................................10
6.4. Reset Default Settings.............................................................................................................................10
7. Instrument Control........................................................................................................................11
7.1. Initial setup ..............................................................................................................................................11
7.2. Lock Voltage ............................................................................................................................................11
7.3. Alarm setting ...........................................................................................................................................11
7.4. Recording temperature, humidity..........................................................................................................12
7.5. Breakdown / burn mode – in IR & IR(t) test modes ...............................................................................12
7.6. Running an insulation test......................................................................................................................13
7.7. Filter button and settings .......................................................................................................................14
8. Memory functions, downloading and remote control............................................................... 15
8.1. Recall results ............................................................................................................................................15
8.2. Download results .................................................................................................................................... 15
8.3. Deleting results........................................................................................................................................16
8.4. Real-time output during insulation tests...............................................................................................16
8.5. Bluetooth® interface activation.............................................................................................................16
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S1-568 / S1-1068 / S1-1568
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9. PowerDB ........................................................................................................................................17
9.1. Download PowerDB ................................................................................................................................17
9.2. Interfacing S1 range to PowerDB ..........................................................................................................18
9.3. Connecting via Bluetooth® when using an S1 .....................................................................................18
9.4. S1 and Remote Control Application ...................................................................................................... 19
9.5. Import/Live Stream Control Application ................................................................................................20
10. Battery indicator.......................................................................................................................... 21
11. On screen error reporting........................................................................................................... 22
12. Measurement Modes .................................................................................................................. 23
12.1. Spot’ IR test............................................................................................................................................23
12.2. Timed IR test ..........................................................................................................................................23
12.3. DAR and PI Insulation Tests...................................................................................................................24
12.4. Dielectric Discharge Test .......................................................................................................................25
12.5. Step Voltage Test ...................................................................................................................................26
12.5.1. Rotary switch setting indicated:........................................................................................................... 26
12.6. Ramp Voltage Test.................................................................................................................................27
12.7. Remote control mode ...........................................................................................................................27
13. Measurement Techniques ...........................................................................................................28
13.1. Understanding Measurement currents ................................................................................................28
13.2. Insulation measurements above 100 GΩ .............................................................................................28
13.3. Terminals................................................................................................................................................29
13.4. GUARD terminal, screened leads..........................................................................................................29
14. Preventive Maintenance ............................................................................................................. 31
14.1. Cleaning .................................................................................................................................................31
14.2. Care of the instrument..........................................................................................................................31
14.3. Leads ......................................................................................................................................................31
14.4. Battery Care ...........................................................................................................................................31
14.5. Replacing the battery............................................................................................................................31
14.5.1. S1-568, S1-1068 battery replacement instructions:..............................................................................32
14.5.2. S1-1568 battery packs (x 2) replacement instructions: .........................................................................32
15. Technical Specification ................................................................................................................33
15.1. Electrical specifications..........................................................................................................................33
15.2. Environmental Conditions ....................................................................................................................35
15.3. General Specifications...........................................................................................................................35
16. Repair and Warranty................................................................................................................... 36
16.1. Calibration, Service and Spare Parts.....................................................................................................36
16.2. Returning product to Megger UK & USA service centres ...................................................................37
16.3. Approved Service Centres .....................................................................................................................37
16.4. Declaration of Conformity ...................................................................................................................37
17. Accessories, equipment and spares ...........................................................................................38
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1. SAFETY WARNINGS
GSafety warnings must be observed during use:
The circuit under test must be switched off, de-energised, isolated and checked to be safe before insulation test
connections are made. Make sure the circuit is not reenergised whilst the instrument is connected.
Only 15 kV rated Megger test leads with plug inserts of 75 mm must only be used on the S1-1568. Lead
integrity can be verified by momentarily shorting clips together at the lowest test voltage range.
Circuit terminals must not be touched during an insulation test or when the test LED is flashing to indicate a
hazardous condition on the measurement circuit, before suitable grounding of the unit under test is in place in
line with safe working practices.
When powered by battery and with the mains supply disconnected, the pins on the mains socket may be
electrostatically charged to a high voltage. There is not enough energy for this to be hazardous but, to reduce
discomfort from accidental discharge if the mains inlet plug is touched, it is strongly recommended that the
functional earth terminal is connected to a convenient earth or unipotential protection circuit. The user is fully
protected for safety by double insulation and this connection need not be capable of taking a fault current.
After completing a test, capacitive circuits must be completely discharged before disconnecting the test leads.
Capacitive charges can be lethal.
Tested items must be firmly shorted out with a shorting link, after discharge, until required for use. This is to
guard against any stored dielectric absorption charge subsequently being released thereby raising the voltage to
potentially dangerous levels.
The voltage indicator and automatic discharge features must be regarded as additional safety features and not a
substitute for normal safe working practice.
It is rare, but in certain circumstances, breakdown of the circuit under test may cause the instrument to
terminate the test in an uncontrolled manner, possibly causing a loss of display while the circuit remains
energised. In this event, the unit must be turned off and the circuit discharged manually.
Test leads, including crocodile clips, must be in good order, clean and with no broken or cracked insulation.
The instrument must not be used if any part of it is damaged.
Insulation testing in wet conditions might be hazardous. It is recommended that this instrument is not used in
these circumstances. If this is unavoidable, the user must take all necessary precautions.
This instrument is not intrinsically safe and must not be used in hazardous atmospheres.
If this equipment is used in a manner not specified by the manufacturer, the protection provided by the
equipment may be impaired.
A test can be started at any time via remote control. Measurement connections must be handled only with the
remote control indicator beacon removed from its socket.
In the event of the instrument failing in remote control mode the test must be stopped manually by pressing the
TEST button.
If performing a two-wire test without guard using the S1-1068, insert the blue safety plug.
Switch the instrument OFF and disconnect any AC source, measurement leads, and all other equipment before
opening the case to change the battery. The instrument must not be operated with the case open. DANGER!
Hazardous voltages are exposed with an AC source connected and the case open.
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SAFETY WARNINGS

1.1 BATTERY WARNINGS
Do not disassemble or modify the battery. The battery contains safety and protection devices which, if damaged,
may cause the battery to generate heat, rupture or ignite.
Never heat the battery in a fire or otherwise.
Do not pierce or damage the battery in any way
Do not subject the battery to strong impacts/shocks.
Do not expose the battery to water, salt water or allow the battery to get wet.
Never short circuit, reverse polarity or disassemble the battery pack.
In the event of a battery cell leaking, do not allow the liquid to come into contact with the skin or eyes. If
contact has been made, wash the affected area with copious amounts water and seek medical advice.
Keep cells and batteries out of reach of children
Seek medical advice if a cell or battery has been swallowed.
Do not leave a battery on prolonged charge when not in use.
Retain the original product literature for future reference
Note: THE INSTRUMENT MUST ONLY BE OPERATED BY SUITABLY TRAINED AND COMPETENT PERSONS
Users of this equipment and/or their employers are reminded that National Health and Safety Legislation requires
them to carry out valid risk assessments of all electrical work so as to identify potential sources of electrical danger
and risk of electrical injury such as inadvertent short circuits.
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SAFETY WARNINGS

2. Symbols Used on the Instrument
FWarning: High Voltage, risk of electric shock
GCaution: Refer to user guide.
tEquipment protected throughout by double insulation.
Line Power / mains
cEU conformity. Equipment complies with current EU directives.
UK conformity. This equipment complies with current UK legislation
Equipment complies with current ‘C tick’ requirements.
Do not dispose of to landfill, sewage systems or by fire.
gReference earth connection. Not a protective earth terminal
Universal Serial Bus (USB)
CAT IV Measurement category IV: Equipment connected between the origin of the low-voltage mains supply
and the distribution panel. CATIV applies to voltage measurement function of these instruments
CAT III Measurement category III: Equipment connected between the distribution panel and the electrical
outlets
CAT II Measurement category II: Equipment connected between the electrical outlets and the user’s
equipment.
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S1-568 / S1-1068 / S1-1568
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Symbols Used on the Instrument

2.1 WEEE Directive
The crossed out wheeled bin symbol on the instrument and on the batteries is a reminder not to dispose of them
with general waste at the end of their life.
Megger is registered in the UK as a Producer of Electrical and Electronic equipment. The registration no is;
WEE/HE0146QT.
Users of Megger products in the UK may dispose of them at the end of their useful life by contacting B2B
Compliance at www.b2bcompliance.org.uk or by telephone on 01691 676124. Users of Megger products in other
parts of the EU should contact their local Megger company or distributor.
2.2 Battery Disposal
Batteries in this product are classified as Industrial Batteries under the Batteries Directive. Please contact Megger Ltd
for instructions on the safe disposal of these batteries.
For disposal of batteries in other parts of the EU contact your local distributor.
Megger is registered in the UK as a producer of batteries.
The registration number is BPRN00142.
For Further information see www.megger.com
www.megger.com S1-568 / S1-1068 / S1-1568 5
Symbols Used on the Instrument

3. General Description
Megger’s new utility focused S1 range of Insulation Resistance Testers (IRT) consists of three models; one 5 kV, one 10
kV and one 15 kV. Resistance measurement capability is up to 15 TΩ for the 5 kV model, 35TΩ for the 10 kV and 50
TΩ for the 15 kV.
3.1 Features
S1-568 measures to 15TΩ and S1-1068, S1-1568 to 35 TΩ
8 mA noise rejection plus 4 filter options ensure highest quality resistance measurements
All models support diagnostic and over voltage tests - PI, DAR, DD, SV and ramp test
Remote Control (RC) mode via USB cable
Bluetooth® link for live streaming data to PC and downloading saved results
Rapid charge Li-ion battery pack
Operate and charge battery from AC source (except during test)
Safety rating : CAT IV 600 V (S1-568, S1-1068),
CAT IV 1000 V (S1-1568 only)
Advanced memory with time/date stamp
DC and AC voltmeter (30 V to 660 V)
Large display with backlight
Download of saved results to PowerDB Lite– USB or Bluetooth®.
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General Description

4. Instrument Controls and Indicators
1. Positive (+) terminal 9. Range rotary switch
2. GUARD terminal 10. Save button
3. Negative (-) terminal 11. Test mode rotary switch
4. 9-pin remote control socket 12. LED indicating line power / mains
5. USB device interface 13. Filter button
6. Navigation/OK buttons and select burn/
breakdown (Brd)
14. Display
7. TEST button with associated HV warning
lamp
15. Power socket
8. Backlight button 16. Functional earth terminal – S1-1568 only
VLUser lock voltage Delete records
Timer Download via USB
Save Filter
Open records Alarm
Battery Breakdown mode
Ramp test Burn mode
FDanger HV GRefer to manual
fFuse Noise detected
Bluetooth®
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Instrument Controls and Indicators

5. Preparations for Use
5.1 Initial instructions
Remove instrument, power lead and pouch from the packing box.
Clip the test lead pouch to the lid.
Open the lid and familiarise yourself with the layout and position of the IEC 60320 power inlet on the left side
of the panel. An isolated USB socket and a 9 pin D-type connector for the remote control indicator beacon are
found on the right side of the instrument. Test terminals are located to the rear of the front panel.
Unpack test leads and place them into the lead pouch.
Read the product manual, especially the warnings.
A quick reference is provided in the instrument lid.
Keep the original packaging for re-use
5.2 Power lead and battery charging
If the power lead supplied is not suitable for your AC connection, do not use an adaptor. Always use a power
lead fitted with the correct plug.
Do not use an inadequately rated AC lead.
If using a fused plug, ensure that it is fitted with a 3A fuse.
Supply voltage: 90 to 265 V rms ac at 50/60 Hz.
A green LED illuminates when line power/mains is present.
The battery will charge over its operating temperature range as long as an AC source is connected, except when
a test is in progress.
For optimum battery life, charge the battery after each use. Full charge duration is up to 2½ hours but a first
charge time of 3 hours is advised.
The battery must be charged between 0 °C and 40 °C ambient temperature. If the battery detects a temperature
outside this range the battery symbol will flash
5.3 Power lead connection table
Connection UK/International USA
Earth/Ground Yellow/Green Green
Neutral Blue White
Live (Line) Brown Black
5.4 Functional verification
Simply turning on the instrument at the central rotary switch will initiate a start-up process and the display will
respond. If an error is detected ‘Err’ will be displayed with an associated error number.
5.5 Calibration
The S1-568 and S1-1068 are supplied with a calibration certificate.
UKAS accredited calibration certificates are available from Megger.
5.6 Storage
Instruments should be stored in storerooms which meet the storage temperature and humidity specifications listed in
this document.
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S1-568 / S1-1068 / S1-1568
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Preparations for Use

6. Operating Instructions
6.1 General operation
The S1-568, S1-1068 and S1-1568 insulation resistance testers (IRTs) are primarily controlled by two rotary switches
and a TEST button used to start and stop a test (see section entitled, “Instrument Control and Indicators”).
The range rotary switch includes an ‘OFF’ position; the instrument switches on by rotating the switch either clockwise
or anticlockwise from this position. A range of test voltages for insulation resistance tests up to 5 kV (S1-568), 10 kV
(S1-1068) and 15 kV (S1-1568) are available, including a user selectable voltage range which can be set between 40
V and 5000V or 10000 V or 15000 V depending on the model. The ‘lockable’ test voltage range (VL) can be adjusted
within the settings function.
With the central rotary switch pointing at the spanner symbol and mode switch at IR, the settings for lock voltage,
low resistance alarm, temperature / humidity and time/date are able to be changed and set.
A light blue coloured section of the rotary switch denotes memory functions; open records, download via USB or
Bluetooth® and delete records. A dedicated save button is provided and all models have a backlight button
The mode rotary switch controls the insulation test type:
Basic insulation resistance IR, timed insulation resistance IR(t), Dielectric Absorption Ratio (DAR), Polarisation
Index (PI) and Dielectric Discharge (DD).
Overvoltage tests Step Voltage (SV) and ramp test.
Remote control mode ( + VL) test selection; start and stop of a test and other functions are set by a computer
via a USB cable.
A cluster of directional buttons and an OK button are used in settings and memory functions. The up/down arrows
also enable the test voltage to be adjusted during IR and IR(t) tests. Prior to the start of an IR or IR(t) test, holding
down the left arrow button with a voltage level selected on the central rotary switch will activate burn mode. Burn
mode is deactivated if the voltage range or mode is changed or by pressing the right arrow/breakdown button
Instrument controls are simple to operate. The central rotary switch incorporates the OFF position. The left hand
rotary switch selects insulation test type. The TEST button starts and stops a test. Image depicts instrument setup for
Remote Control mode.
Backlight Save Filter
Four arrow buttons + OK facilitate adjustment and selection of settings, voltages and modes. Breakdown/burn modes
are set using the left and right arrow buttons. Backlight, Save and Filter functions are dedicated buttons.
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Operating Instructions

6.2 Breakdown vs. burn mode
In breakdown mode insulation tests are automatically stopped and Brd displayed when a fault causes the applied
voltage to drop rapidly. Burn mode IR tests ignore breakdown and continue to test the insulation and are therefore
destructive tests. Burn mode is used to purposely create a carbon track in insulation to facilitate fault location.
To enable measurements (IR, IR(t) modes) in very high noise substations, breakdown mode is turned off automatically
when noise current exceeds 3.5 mA. Both breakdown and burn icons are switched off and the breakdown detector is
disabled. High noise above 3.5 mA can appear to the instrument like a breakdown which would halt an IR/IR(t) test.
Burn mode is not affected by the 3.5 mA limit.
To test for high noise select the voltmeter function and read the voltage. A high voltage will indicate a high noise
environment
6.3 Voltmeter
A voltmeter is incorporated in the instrument and measures AC/DC voltage from 30 V to 660 V. Frequency (Hz) is
measured and displayed for AC voltages. Voltmeter mode is activated by switching to ‘V’ mode as illustrated.
Positive and negative terminals are used for the voltmeter function; do not connect the GUARD terminal when in
voltmeter (V) mode.
To assist user safety, the instrument will automatically switch to voltmeter mode if a voltage of 50 V or more is
connected to the terminals. The measured voltage will be displayed accompanied by an intermittent beeper to warn
the user that a dangerous voltage exists.
For further explanation see, “Running an Insulation Test” on page 11
6.4 Reset Default Settings
Remove AC source, press OK, backlight buttons and switch main rotary switch from OFF to setting icon.
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S1-568 / S1-1068 / S1-1568
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Operating Instructions

7. Instrument Control
7.1 Initial setup
It is important to setup the Real Time Clock (RTC) on S1-568 and S1-1068 to ensure that records saved in the
instrument are time/date stamped correctly. The RTC has a separate battery to maintain settings even when the
primary battery is removed.
To set the clock and date, select the settings function (spanner) on the central rotary switch and turn the mode rotary
switch to IR. Navigate using the left/right arrows to where the time and date is displayed.
Set the time using the up and down arrows. Change the hours and minutes then press OK to save
Select the day/month format required, i.e. d:m for day:month or m:d for month:day and press the right arrow button,
then set the date and press OK to save
A tick on the left of the display indicates that a setting is saved, a cross is displayed during adjustment indicates that it
is not set. Exit settings by changing the central rotary switch to a different position.
7.2 Lock Voltage
The user selectable ‘lock’ voltage range is set by adjusting the displayed voltage using the up and down arrow
buttons. When the desired voltage is displayed it is saved by pressing the OK button. The setting does not change
even if the instrument is switched off.
7.3 Alarm setting
A low resistance alarm can be set to sound when the resistance of an insulator reaches this limit. The default alarm
setting is 500 kΩ and inactive (x is displayed on the right of the display). Set range and mode switches to the settings
and IR positions respectively. Press the right arrow button once. The low resistance alarm can be set at the default
value by simply pressing the OK button, or changed to a different alarm resistance level using the up/down arrow
buttons and save it by pressing OK.
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Instrument Control

7.4 Recording temperature, humidity
The S1-568 and S1-1068 are able to record insulation temperature and humidity measured by independent sensors.
If you do not wish to record either temperature or humidity do not change the default setting or reset it if it was
previously set. If temperature entry is enabled the humidity entry can be selected.
Move the central rotary switch to point to settings and press the right/left arrow buttons until ‘t° ---‘ is displayed.
The default setting is no temperature record. This can be changed by pressing up or down arrows to select either °F
or °C temperature entry. Pressing OK will confirm the settings. If humidity is to be recorded it is necessary to set the
temperature and humidity before pressing OK to save them with a test result. Humidity will either be set “On”) or
not set (“---“).
When prompted for temperature or temperature and humidity they can be entered using the up - down arrows.
Temperature is entered in 1 degree steps, humidity is entered in 1% steps. The up and down arrows adjust the
selected value, the OK button accepts the displayed value and advances to entering humidity if temperature is
currently being entered
Temperature and humidity setting and is entered as follows:
Temperature and relative humidity are entered together:
1. At the t° --- prompt change the setting even if it shows the setting you require
2. Set t° to setting you require, it will flash, then press left arrow key again, do not press OK.
3. Enter rH setting On and press OK to confirm both temperature and relative humidity readings will be recorded
It is not possible to enter only a relative humidity reading as it is meaningless without temperature
7.5 Breakdown / burn mode – in IR & IR(t) test modes
The insulation resistance ‘IR’ test operates in either ‘Breakdown’ or ‘Burn’ mode.
Breakdown Burn
Default mode is breakdown.
Left and right arrow buttons toggle between burn and breakdown mode when a voltage
range is selected. In the breakdown mode the breakdown icon will be indicated.
In breakdown mode the test will automatically terminate and display Brd on detection of a
breakdown to prevent damage to the insulation
IR
8
10T
1T
100G
10G
1G
100M
10M
1M
100k
0
nA
m:s
V
Burn mode disables the normal breakdown detection and test voltage continues
after breakdown of the insulation. This enables the location of a failure to be
detected but it is a destructive test.
Due to the potential damage that could occur, the unit produces two long beeps when
starting a test with burn mode activated.
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Instrument Control

7.6 Running an insulation test
Before testing any reactive load ensure that the insulation is fully discharged
15 kV - The functional earth (g) terminal. Refer to Note below.
Great care should always be taken when connecting the leads to a system to be tested. Even isolated systems may
exhibit charges or induced voltages and appropriate Safe Working Practices must be employed.
On connection of the test leads prior to starting a test, any voltages of 50 V or more will be indicated on the
display, accompanied by an intermittent beeper, (see Voltmeter pg. 9). This is especially likely in electrically noisy
environments.
Should electrical noise be present it will cause a current to flow through the instrument’s internal discharge resistors.
If this becomes excessive and exceeds instrument rating, damage to the instrument may result.
The S1-568, S1-1068 and S1-1568 have been designed to handle high noise currents up to
8 mA. If currents above 8 mA are detected the instrument will sound an urgent “warble” tone and be accompanied
by the symbols G.
Note: When powered by battery and with the mains supply disconnected, the pins on the mains socket may be
electrostatically charged to a high voltage. There is not enough energy for this to be hazardous but, to reduce
discomfort from accidental discharge if the mains inlet plug is touched, it is strongly recommended that the
functional earth terminal is connected to a convenient earth or unipotential protection circuit. The user is fully
protected for safety by double insulation and this connection need not be capable of taking a fault current.
The instrument should be immediately disconnected from the supply after discharging the dc test voltage taking care
to ensure Safe Working Practices. (NB very high induced voltages may be present)
To assist user safety, the instruments will not permit a test to be started if the induced voltage exceeds 8 mA.
It is possible to adjust the test voltage using the up and down arrow buttons, either before or during an IR and
IR(t) test. Once a test has begun, it is advisable to only adjust the voltage in the first 10s of the test to prevent
interference with the capacitive and absorptive currents in the insulator.
A test can be started by pressing the ‘TEST‘ button for approximately 3 seconds from either the test screen or
voltmeter screen. A timer will be displayed to indicate elapsed time during the test. The test is stopped by pressing
the TEST button. As soon as the test is stopped a discharge of the insulator is automatically initiated and the display
indicates a voltage if present on the insulator.
Do not disconnect instrument leads or clamps until the LED and display warnings are
switched off indicating that the unit under test is discharged! Significant current can
be stored in reactive loads which act as capacitors or inductors, which can be lethal.
The display shows the final resistance result, capacitance, test current and time constant (TC) in addition to test
duration. On all S1 models the result can be saved by pressing the dedicated save ( ) button after a resistance test
is complete. The save icon will appear momentarily to confirm the data is saved. If a full test curve is required the
user must select logging by pressing the save button before starting the test. In this case, data will be logged every 5
seconds for the duration of a resistance test. It is not possible to log voltages in voltmeter mode.
If temperature entry has been activated a prompt will appear for the user to enter a temperature reading after IR and
IR(t) insulation tests. If relative humidity has been activated the user should enter a humidity reading. DAR, PI, SV,
Ramp and DD tests will not prompt for temperature or humidity input.
Display backlight is activated by pressing the (J) button. The backlight button can be pressed a second time to
deactivate the backlight. Automatic deactivation will occur after a pre-set timeout period if not deactivated manually.
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Instrument Control

7.7 Filter button and settings
All S1 models have a dedicated filter button which can be set before or after starting an IR test .
The filter has four settings; 10 s, 30 s, 100s, 200s. It is also possible to turn off the hardware filter to speed up the
response when there is no noise present. If a one minute spot test is to be performed a suitable filter would be 10 s
or possibly 30 s activated towards the end of the test. Setting a longer filter would be meaningless because the test
only lasts 60 s. The S1 range memorises all results in the current test to be able to give an instantaneous meaningful
filtered reading of results as long as the duration of test is longer than the filter length.
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S1-568 / S1-1068 / S1-1568
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Instrument Control

8. Memory functions, downloading and remote control
All S1 models have advanced storage, recall and download functions to facilitate documentation of insulation tests.
Download is enabled via a USB cable or Bluetooth® connection.
8.1 Recall results
Setting the central rotary switch to ‘open folder’ position enables the user to recall saved results beginning with the
most recent result. Up and down arrow buttons enable the user to scroll through results based on a sequential four
digit index. Left and right arrow buttons scroll through a single result showing all saved test data including time/
date. Where logging has been enabled, only the final result is displayed on screen. The full result can be viewed by
downloading to PowerDB/PowerDB Lite.
In saved results, the test mode is identified by the icon or abbreviation of each test on the display. In addition, the
open folder icon is displayed to indicate recall memory mode.
8.2 Download results
Downloading data function is selected by switching to the ‘download via USB’ icon on the central rotary switch.
Before starting a download a USB PC-to-device cable must be connected between a PC and the USB port on the
instrument, or alternatively a Bluetooth® connection setup to a suitably enabled PC or similar device.
PowerDB Pro, Advanced and Lite are Megger’s asset and data management software packages with integrated forms
for the S1 range of instruments. Ensure that the applicable version of PowerDB is loaded and running on the PC, then
select the appropriate S1 by model number.
When using the USB cable, check the serial port allocation on Device Manager, and enter the serial port allocated
when starting PowerDB.
PowerDB offers instructions specific to the S1 range regarding the download procedure. When results are
downloaded the IRT can be disconnected from the PC/Bluetooth® device after the application releases the port.
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Memory functions, downloading and remote control

8.3 Deleting results
There are two delete functions; delete a single result and delete all results. Select the bin icon on the central rotary
switch. The first record indicated contains the result of the last test performed. Up/down arrows navigate through
records and the OK button is used to select delete where the ‘X’ changes to a tick and the on screen bin icon flashes.
A subsequent press of the OK button activates the deletion.
8.4 Real-time output during insulation tests
PowerDB can be used to record real time data output from the S1 range. Voltage, current and resistance data is sent
at a rate 1 Hz from the IRT and displayed in real time on a graph, e.g. a plot of current (μA) versus voltage (kV) for
the ramp test.
Before running a test where a real time output is required, attach a PC running PowerDB Pro, PowerDB Advanced or
PowerDB Lite via a USB cable or Bluetooth® link.
Start the application and activate real time data capture in the form of choice. As soon as the test is started real time
data output will begin. When the test is complete ensure that the form is saved in PowerDB Pro/Advanced/Lite.
8.5 Bluetooth® interface activation
The Bluetooth® interface is set with the main rotary switch pointing to setting and the mode switch pointing at the
remote control icon.
To connect a PC or other intelligent device, enable the Bluetooth® on the S1 and the PC. Let the PC find the S1, its
serial number will be part of the identifier and default passcode for connection is ‘0000’. Create a connection to the
S1 and check the link works by connecting directly to the S1. It is also possible to check the Bluetooth® link using a
terminal emulator.
PowerDB Lite running on a PC can be used to connect to the S1 units via Bluetooth®. Port allocations can be found
in Windows Device Manager.
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Memory functions, downloading and remote control