Megger S1-5010 User manual

M
S1-5010
Diagnostic Insulation Tester
User Guide

GSAFETY WARNINGS
•Safety Warnings and Testing Precautions must be read and understood before the
instrument is used. They must be observed during use
•The circuit under test must be switched off, de-energised and isolated before test
connections are made.
•The test terminal panel and side recess panel must be kept in a dry, clean condition.
•Circuits must be discharged before disconnecting the test leads - Capacitive loads
can be lethal. See ‘Testing Precautions’.
•Circuit connections must not be touched during a test.
•In certain circumstances, break-down of the circuit under test may cause the
instrument to terminate the test in an uncontrolled manner, possibly causing a loss of
display and warning indications while the circuit remains energised. In this event, it is
important that the circuit is discharged and the instrument is turned off, before
touching any connections.
•Replacement fuses must be of the correct type and rating.
•The instrument should not be used if any part of it is damaged.
•Refer to ‘Testing Precautions’for further explanations and precautions.
2
Symbols used on the instrument
GCaution: Refer to accompanying notes.
FRisk of electric shock.
cEquipment complies with relevant EU Directives
tEquipment protected throughout by Double Insulation (Class II).
NOTE
THE INSTRUMENT MUST ONLY BE USED BY SUITABLY TRAINED AND COMPETENT PERSONS.

Contents
Safety Warnings 2
General Description 4
Features and Controls 5
Battery or Mains Operation 6
Mains supply re-charging 6
12 V supply re-charging 6
Battery Charging Notes 6
Setting up procedures 7
Setup Language 7
Setup IR, SV and DD Tests 7
Setup PI Tests 7
Disable a Test Mode 8
Enable a Test Mode 8
Delete Stored Test Results 9
Set / Reset Date and Time 9
Set / Reset Printer Baud rate 10
Set / Reset PC Baud rate 10
Setup / Reset ‘Power On’ code 10
Setup / Reset ‘Setup’ code 11
Set / Reset Date format 11
Set / Reset Current limit 11
Set / Reset Data Output Rate 11
Set / Reset Locking test button 12
Operation 13
Testing Precautions 13
Performing tests - General 14
Using the Filter 15
Fault Conditioning (Burn) 16
Remote Operation 16
Test Mode Summary 17
Insulation Resistance Testing 17
Polarization Index Testing 17
Dielectric discharge Testing 18
Step Voltage Testing 18
Fault Conditioning (Burn) 19
Data Retrieve 20
Display stored Test results 20
Download stored Test results to a printer 20
Downloading Test results to a PC 20
Application Notes 21
Preventive Maintenance 21
Insulation testing concepts 22
Test Techniques 23
Using the Guard terminal 23
Measurements above 100 GΩ23
Circuit block diagram 24
Calibration Check 24
Appendix 1 25
Specification 26
Accessories 27
Repair and Warranty 28
3

The S1-5010 is an advanced insulation tester for all types of electrical equipment offering
measurement capability up to several T. The instrument performs automatic tests, enabling
consistent operation without operator input, stores results and can be operated from a PC. Flexible
power supply options and robust, portable construction allow the instrument to be used in a wide
variety of applications. It is particularly suitable for analyzing the insulation of large machines, HV
generators and cables. When turned On, voltage in excess of 50 volts across the + and - terminals
will be indicated on the display, together with the flashing HV symbols.
Switchable filtering allows stable readings to made when in the presence of high levels of 50 Hz or
60 Hz interference.
PP
PPoo oollllaa aarr rriiiizz zzaa aatt ttiiiioo oonn nn IIIInn nndd ddee eexx xx and DD DDiiiiee eellllee eecc cctt ttrr rriiiicc cc DD DDiiiiss sscc cchh hhaa aarr rrgg ggee ee tests are performed automatically, and test duration
and voltages can be adjusted according to user preference for these tests. A SS
SStt ttee eepp pp VV VVoo oolllltt ttaa aagg ggee ee test can
also be performed automatically, with a voltage of 2500 V or 5000 V and a fixed test duration of 5
minutes. It is also possible to restrict operation to user defined voltages, to disable the graph plotting
or to disable certain types of tests. This is all done using the ‘SS
SSee eett ttuu uupp pp’ screen. The settings can be
security code protected. It is also possible to set a general security code to prevent unauthorized use
of the instrument.
The S1-5010 can be powered from the main supply, or by the its own internal rechargeable battery
which provides for at least 8 hours of continuous testing. The battery symbol ,in the bottom
left of the display indicates battery capacity. Connecting power to the supply connector, or to the 12
volt connector in the side recess panel will automatically charge the battery whether the instrument
is switched ‘OO
OOnn nn’ or ‘OO OOff ffff ff’. A high level of internal isolation allows the S1-5010 to be used while the
battery is being recharged. An internal battery management system switches the instrument off after
ten minutes of inactivity. Test results and settings will not be lost when the instrument is switched off.
Test results are stored internally but the RS232 connection allows an external computer to receive
results in real time or to receive results previously stored.
Safe testing is achieved with a double insulated plastic case, double insulated test lead connectors,
a one second delayed start test button, high voltage warning symbols , flash on the display,
and the test terminal HV warning light flashes. A socket in the side recess panel provides a 5 volt
logic signal to drive an external warning light. Capacitive loads are automatically discharged at the
end of a test.
Beneath the display, four tactile keys normally control:-
- Electrical ‘noise’ Filter
- Contrast
- Back-light.
General Description
4
RS232 connection
Download ‘Real time’ or
‘Batch’ results to PC.
Remote operation.
12 V d.c. connection
Plug in supply of 10 - 15 V
to charge the battery
Battery Charge Indicator
Mains connection
Plug in supply of 95 - 265 V a.c.
to charge the battery.
Fuse
200 mA - 250 V
HV ‘On’ indicator connection
5 V logic signa output.
(To connect an external HV
indicator)
Side recess Panel

Features and Controls
Power On / Off Switch
Press to turn On / Off.
Left Hand Cursor keys
Press to:-
i) Select and highlight the
required mode.
ii) Select test Results /
& Bargraph / Graph
in Enhanced mode.
(when test has run ≥1 minute)
HV Warning
Flashes when a test is in
progress or a hazardous
voltage is present. Right Hand Cursor
keys
Press to select and
highlight the required
voltage before
commencing test.
VARI position
Gives the option to:-
i) Select a non standard
voltage between 25 V
and 5000 V before
commencing test.
ii) Continuously vary the
voltage in 25 V steps
during a test.
Filter key
Press to:-
i) Sequentially select filter times.
(See ‘Using the Filter’)
ii) Initiate the ‘On screen’ display
above the key.
Contrast keys
Press to:-
i) Adjust the screen contrast.
ii) Initiate the ‘On screen’display
above the key
Backlight key
Press to:-
i) Switch backlight On or Off.
ii) Initiate the ‘On screen’
display above the key.
Mode setting
Date and time
Voltage setting
Battery Capacity Indicator
Test duration
Test Button
5
Negative Terminal Positive Terminal
Guard Terminal
Toinsert and lock in shrouded test plugs
Push in
To release shrouded test plugs
turn a quarter turn and pull out

The S1-5010 can be powered by:
• Internal rechargeable battery which provides at least 8 hours of testing.
• Mains input of 95 volts to 280 volts 50/60 Hz.
• 12 - 15 Volts d.c or a.c.
General
The S1-5010 is fitted with a 12 volt, 7 Amp-hour sealed lead-acid battery. The maintenance free
battery will last for at least 5 years if kept charged and not subjected to prolonged high temperatures.
(Occasional exposure to +50° C will do little harm but a continuous temperature >40° may cause
irreparable damage). It is advisable to fully charge the battery before the instrument is put into service
for the first time. Charging is carried out by external a.c. mains supply, or by 12 V d.c. or a.c. supply.
To fully recharge the battery after 8 hours of use takes about 16 hours. The battery capacity display
symbol indicates the state of charge.
Mains supply re-charging
The application of a mains supply of 95 - 265 V a.c., 50 - 60 Hz powers the instrument, and charges
the battery. The S1-5010 will operate on a supply as low as 90 volts, but this will not fully charge the
battery. Charging is automatic as soon as the mains supply is connected to the IEC 320 connector in
the side recess panel. Confirm that the red indicator lamp is illuminated.
12 V supply re-charging
The application of an external 12 - 15 volt d.c or a.c. supply powers the instrument and charges the
battery at the same rate of charge as the mains input. It is possible to connect both mains and a 12
volt input simultaneously, but this will not charge the battery any faster. The socket accepts 12 -15 volt
d.c. (any polarity connection) or 12 - 15 volt a.c. A charging lead fitted with an automotive cigar lighter
plug for charging the battery from a vehicle is available (See ‘Accessories’). Charging is automatic
as soon as the 12 V supply is connected to the 12 V DIN socket. Confirm that the red indicator lamp
is illuminated.
12 V DIN socket
Caution:- Applying more than 15 V to this socket may overcharge the battery.
Battery Charging Notes
• Do not leave battery in a totally discharged state. Frequent charging to keep the battery ‘topped
up’ will maximise battery life.
• When charging the battery indoors, the area should be well ventilated.
• The battery should only be charged at temperatures in the range 0 °C to 40 °C.
• No harm will occur to the battery is kept on charge indefinitely.
• If the instrument is idle for long periods, recharge the battery for at least 24 hours every 6
months (more frequently if the storage temperature is >40 °C).
Setting Up Procedures
6
Leave unconnected
Connection Connection

Note: † If pre-set, the ‘SETUP’ security code input screen will be displayed. Enter the 3 digit security
code using the ‘+’,‘-’ and ‘NEXT‘ keys. Press the ‘OK’ key to display the ‘SETUP‘
screen.
Setup Screens
Any changes made to the ‘Setup’ screens will be retained. Memory contents will only be lost in the
unlikely event of a power loss combining a failure of the main and the backup battery. When power is
restored, Setup conditions will revert to the default settings i.e. All tests enabled , all voltages enabled,
First PI value T1 = 1minute, Second value T2 = 10 minutes, Stop time (T3) = 10 minutes, and
enhanced test mode.
Setup Language §
1. From the first ‘Menu’ screen, use the left hand st cursor keys to select and highlight ‘SETUP’.
2. Press the ‘CHANGE’ key. †§ The ‘LANGUAGE SELECTION‘ screen is displayed.
3. Use the left hand cursor keys to select and highlight the required language.
4. Press the ‘YES’ key. The ‘SETUP‘ screen is displayed.
Setup IR, SV and DD Tests
Simple or Enhanced mode can be selected for each type of test (except DD test). ‘SIMPLE’ mode
provides basic test results during, and on completion of a test. ‘ENHANCED’ mode provides basic
test results and a graph plot and a Bargraph as the test progresses. Individual voltage ranges for
each type of test can be switched Off or On as required.
1. From the ‘Menu’screen, use the left hand cursor keys to select and highlight ‘SETUP’.
2. Press the ‘CHANGE’ key. †§ The ‘SETUP‘ screen is displayed.
3. Use the left hand cursor keys to select and highlight the required test.
4. Press the ‘CHANGE’ key. The ‘SETUP MODE‘ option screen for the selected test is
displayed.
5. Press the ‘SIMPLE’or the ‘ENHANCED’key as required. The ‘TEST RANGES’screen is
displayed. Note:- selecting the ‘DISABLE‘ key will disable and remove the test from the
‘Menu’screen. See ‘Disable a Test’.
6. Use the left hand cursor keys to individually select and highlight any voltage ranges to be
switched Off or On. Press the ‘On’ or ‘OFF’ key, as appropriate.
7. On competion, press the ‘END‘ key to return to the ‘SETUP‘ screen.
8. Press the ‘END‘ key to return to the ‘Menu’ screen.
Setting Up Procedures
7

8
Example showing the setup of an enhanced SV Test
Setup PI Test
1. From the ‘Menu’ screen, use the left hand cursor keys to select and highlight ‘SETUP‘.
2. Press the ‘CHANGE’ key. †§ The ‘SETUP‘ screen is displayed.
3. Use the left hand cursor keys to select and highlight ‘PI’. Press the ‘CHANGE’ key. The
‘PI TEST SETUP‘ screen is displayed.
4. Press the ‘PI TEST TIMES‘ key. The ‘PI TEST TIMES‘ screen is displayed.
5. Press the ‘NEXT‘ key to highlight and select the First Value, the Second Value or the Stop
Time as required.
6. Using the ‘+’ et ‘-’ keys, adjust the timing as required.
7. Press the ‘OK’ key to return to the ‘PI TEST SETUP‘ screen.
8. Use the left hand cursor keys to select and highlight ‘PI‘. Press the ‘CHANGE’ key. The ‘PI
TEST SETUP‘ screen is displayed.
9. Press the ‘SET PI TEST‘ key. The ‘PI TEST SETUP MODE‘ screen is displayed.
10. Press the ‘SIMPLE’ or the ’ENHANCED‘ key as required ‘TEST RANGES‘ screen is
displayed. Note:- selecting the ‘DISABLE‘ key will disable and remove the IP test from the
‘Menu’ screen. See ‘Disable the Test‘.
11. Use the left hand cursor keys to individually select and highlight any voltage ranges to be
switched Off or On. Press the ‘ON’ or ‘OFF’ key, as appropriate.
12. On completion, press the ‘END‘ key to return to the ‘SETUP’ screen.
13. Press the ‘END‘ key to return to the ‘Menu’ screen.
Disable a Test mode
When a test mode is disabled, it is removed fromthe ‘Menu’ screen.
1. From the ‘Menu’ screen, use the left hand cursor keys to select and highlight ‘SETUP‘.
2. Press the ‘CHANGE’ key. †§ The ‘SETUP‘ screen is displayed.
3. Use the left hand cursor keys to select the test to be disabled.
4. Press the ‘CHANGE’ key. The ‘SETUP MODE‘ screen is displayed.
5. Press the ‘DISABLE‘ key. The ‘SETUP‘ screen is displayed.
6. Press the ‘END‘ key to return to the ‘Menu’ screen.
Alternatively, a test can be disabled by individually setting each test voltage to ‘OFF’.
Setting Up Procedures

9
Example showing the disabling of a PI Test
Enable a Test mode
1. From the ‘Menu’ screen, use the left hand cursor keys to select and highlight ‘SETUP‘.
2. Press the ‘CHANGE’ key. †§ The ‘SETUP‘ screen is displayed.
3. Use the left hand cursor keys to select the test (identified as OFF) to be enabled.
4. Press the ‘CHANGE’ key. The ‘SETUP MODE‘ screen is displayed.
5. Press the ‘SIMPLE’ , or the ‘ENHANCED‘ key, as required. The ‘TEST RANGES‘ screen is
displayed.
6. Use the left hand cursor keys to individually select and highlight any voltage ranges to be
switched Off or On. Press the ‘ON’ or ‘OFF’ key, as appropriate.
7. On completion, press the ‘END‘ key to return tothe ‘SETUP‘ screen.
8. Press the ‘END‘ key to return back to the ‘Menu’ screen.
Alternatively, a test can be enabled by individually setting at least one test voltage to ‘ON’.
Example showing the enabling of a DD Test
Delete Stored Test results
1. From the ‘Menu’ screen, use the left hand cursor keys to select and highlight ‘SETUP‘.
2. Press the ‘CHANGE’ key. †§ The ‘SETUP‘ screen is displayed.
3. Use the left hand cursor keys to select and highlight ‘TESTS STORED‘. Press the ‘CHANGE’
key. The ‘DELETE ALL TESTS - CONFIRM‘ screen is displayed.
4. Accept or reject the deletion by pressing the ‘YES‘ or the ’NO‘ key. The ‘SETUP MODE’
screen is displayed.
5. On completion press ‘END’key to return back to the ‘Menu’ screen.
Set / Reset Date and Time
1. From the ‘Menu’ screen, use the left hand cursor keys to select and highlight ‘SETUP’.
2. Press the ‘CHANGE’ key. †§ The ‘SETUP‘ screen is displayed.
3. Use the left hand cursor keys to select the current Date and Tiime.
4. Press the ‘CHANGE’ key. †§ The ‘SETUP MODE‘. ‘SET CLOCK’ screen is displayed.
5. Press the ‘NEXT‘ key to highlight and select the Time / Date component to be adjusted.
6. Using the ‘+’ and ‘-’ keys, adjust the time / Date as required.

7. Press the ‘END’ key to return to the ‘SETUP‘ screen.
8. Press the ‘END’ key to return back to the ‘Menu’ screen.
Note:- Date format can be also be changed as required. See ‘Set / Reset Date Format’.
Set / Reset Printer Baud Rate
This is the communication rate used when retrieving results to a serial printer.
1. From the ‘Menu’, screen, use the left hand cursor keys to select and highlight ‘SETUP‘.
2. Press the ‘CHANGE’ key. †§ The ‘SETUP‘ screen is displayed.
3. Press the ‘NEXT‘ key. Use the left hand cursor keys to select and highlight ‘PRINTER
BAUD‘.
4. Press the ‘CHANGE’ key. †§ The ‘PRINTER BAUD‘ screen is displayed.
5. Use the ‘NEXT‘ key to select and highlight the Baud Rate as required.
6. Press the ‘END’ key.
7. Press the ‘END’ key to return back to the ‘Menu’ screen.
Set / Reset PC Baud Rate
This is the communication speed to your PC when retrieving results to a PC file and does not affect
the speed when using the S1-5010 with the remote control software. The default Baud rate is 9600.
1. From the ‘Menu’ screen, use the left hand cursor keys to select and highlight ‘SETUP‘.
2. Press the ‘CHANGE’ key. †§ The ‘SETUP‘ screen is displayed.
3. Press the ‘NEXT‘ key. Use the left hand cursor keys to select and highlight ‘PC BAUD‘.
4. Press the ‘CHANGE’ key. The ‘PC BAUD‘ screen is displayed.
5. Use the ‘NEXT‘ key to select and highlight the Baud Rate as required.
6. Press the ‘END‘ key.
7. Press the ‘END‘ key to return back to the ‘Menu’ screen.
Security Codes
There are two security code systems to inhibit access by unauthorized persons. The user definable 3
digit ‘Power On’code controls access entry into the instrument. The user definable 3 digit ‘Setup’
code controls access to the Setup displays.
Set / Reset ‘Power On’ Code
to set or re-set the 3 digit ‘Power On’ code to control access enty into the instrument the ‘POWER ON
SECURITY CODE’ is switched to On in the ‘Setup’ mode. When the instrument is switched Off and
On again, the new code is entered, to operate the instrument. This ‘Power On’code must then be
entered by anyone wishing to use the instrument.
1. From the ‘Menu’, screen, use the left hand cursor keys to select and highlight ‘SETUP‘.
2. Press the ‘CHANGE’ key. †§ The ‘SETUP‘ screen is displayed.
3. Press the ‘NEXT‘ key. The ‘SETUP MODE‘ screen is displayed.
4. Use the left hand cursor keys to select ‘POWER ON SECURITY CODE‘. Press the ‘CHANGE’
key to set the code to ‘ON‘ (or ‘OFF‘ as required). If an existing code is to be changed, set
the code to OFF; exit the screen; return back to the screen and then set the code back to ‘ON‘.
5. Press the ‘END‘ key to exit back to the ‘Menu’ screen.
6. Switch the instrument Off, pause, and then switch back On again. The ‘ENTER THE SECURITY
CODE‘ input screen is displayed.
7. Enter (and remember) the new 3 digit security code using the ‘+’,‘-’ and ‘NEXT‘ keys.
On completion, press the ‘OK’ key. The instrument powers up and the ‘Menu’ screen is
displayed.
Setting Up Procedures
10