Megger PAT4DV/3 User manual

User Guide
M
PAT4DV/3 & 4DVF/3
Portable Appliance Testers

2
SAFETY
Symbols used on the instrument.
Caution: Refer to accompanying notes Risk of electric shock.
Equipment complies with relevant EU Directive
SAFETY WARNINGS
•Safety Warnings and Precautions must be read and understood before the instrument is used. They must be observed during use.
•For safety, PAT4 must be properly earthed. Only use a supply socket that has a protective earth contact. If there is any doubt as to
the effectiveness of the supply socket earth, connect a known good earth to the earthing point on the PAT4 front panel.
•Test leads, probes and crocodile clips must be in good order, clean and with no broken or cracked insulation. The flash test probe must
be held behind the handguard, and only be connected to the PAT4 for the duration of the test.
•For safety, tests are performed in the correct order. If an asset (appliance) fails a test, PAT4 will fail the asset and exit the test sequence.
The fault causing the failure must be corrected before the appliance is re-tested.
•During testing, ensure that no hazard will exist if the asset operates as a result of normal running, or of a fault condition.
•Assets should not be routinely flash tested.
•Where assets have to be flash tested, see ‘Flash Testing – Warnings’ on page 11.
•When performing an Insulation test the asset must not be touched.
•Only perform an Operation test after an Earth Bond Test (Class 1 only) and Insulation Test (Class 1 or Class 2) have been verified.
•The instrument should not be used if any part of it is damaged.
•Replacement fuses must be of the correct type and rating. See ‘Fuses’ section.
NOTE: THE INSTRUMENT MUST ONLY BE USED BY SUITABLY TRAINED AND COMPETENT PERSON

Safety 2
General Description 3
Fuses 4
Features and Controls 5
Setting Up 6
Contrast Adjustment 6
Reset to default settings 6
Shortcut to Comms Upload (from PC) 6
Results print-out after test 6
Logging in to the unit 7
User names and PIN numbers 8
Setup Manual/Autopass Testing/Fail Buzzer 9
Setup Test Times 10
Setting the Clock 11
Setting Up the Test Company Title 12
Barcode Scanner 13
Clients and Locations 14
Selecting an existing Client and Location 15
Adding or editing a Client 16
Adding or editing a Location 17
Erasing a Client or Location 18
Asset Test Groups 19
Adding, editing or erasing a Group 21
Assets 22
Adding an Asset 23
Editing or erasing an Asset 24
Locate an Asset 25
Testing an Asset 27
Auto Restart to Main screen 28
Repair Codes 28
Historical Data 29
Quick-Check 30
Erase Memory 31
Printing Reports and Results 32
Download/Upload Data 33
Download to a Computer 34
Upload from a Computer 35
Description of Tests 36
Visual Inspection List 36
Earth Bond Test 37
Earth Continuity Test 37
Circuit Test (Pre-Test) 38
Insulation Test 38
Operation Test 38
Earth Leakage (Touch Current) Test 39
Fuse Test 39
Extension Lead Testing 39
Flash Test (PAT4 DVF only) 40
Demonstration Data 41
Specification 44
Accessories 47
Repair and Warranty 48
3
Contents

The PAT4 Portable Appliance Testers provide significant
advances in the ease of use, with features designed to speed up
the testing of electrical equipment. The instruments meet the
testing requirements of the UK Electricity at Work Regulations
and the IEE Code of Practice for In Service Inspection and
Testing of Electrical Equipment. The instruments may be used
stand alone, or for maximum advantage, with PC based
software, such as XPressTM software for WindowsTM (See
Accessories). The integral real time clock ‘stamps’ an accurate
time and date on every test. PAT4 utilises a unique concept
known as Test Groups. This permits very rapid addition and
testing of equipment with a minimum of data entry. Once set up,
the use of Test Groups will save a great deal of time. Additionally,
Test Groups ensure that only the correct tests can be applied to
the equipment under test and eliminate the need for complex test
codes.
PAT4 provides a professional system for the rapid testing of
equipment while maintaining the essential traceability of asset
test history. The on-board Asset (Appliance) database keeps a
record of appliance details, re-test frequency, test and re-test
dates, and allows the previous test results to be displayed at the
time of test. As well as the easy to use QWERTY keyboard, each
field is named, so there is less chance of entering the wrong
information. Data entry via optional bar code scanners is also
possible. The lithium backed ‘real time’ clock maintains the time
and date accurately for over ten years and automatically date
and time stamps every asset tested. Data is stored in battery
backed, solid state memory that under normal circumstances will
be protected for ten years. Such storage media is however
susceptible to external influences such as transients and static
discharge. These effects may cause data corruption or loss.
Megger Limited cannot accept responsibility for any such losses
of data. When the PAT4 is used with PC software such as
XPressTM software, employing good working practices, such as
the regular downloading of data will substantially reduce the risk.
The following information can be stored and accessed directly on
the PAT4.
•Assets (Appliances) - total number 1000
•Locations (Site details) 20
•Results (sets of) 1000
•Test Groups 50
•Clients (names and addresses) 10
•Users 10
The instruments can perform the following tests:
•Visual Inspection list
•Insulation test
•Fuse Test
•Operation test.
•Circuit test (pre-test)
•Earth leakage test.
•Earth Bond test
•Extension Lead test.
•Earth Continuity test
•Flash test (PAT4 DVF only).
Due to the often harsh electrical environments in which Portable
Appliance Testers are used and the likelihood of testing faulty
equipment all Megger Portable Appliance Testers are protected
by appropriate internal fuses. This ensures that the instrument is
protected from serious damage.
4
General Description

An unfortunate downside to using internal protection fuses is that
the PAT4 can be rendered inoperative simply by the failure of
such a fuse resulting in frustration and delay for the user. In order
to ensure that the instrument can quickly be put back into service
without downgrading its protection externally located fuses are
now fitted to all new PAT4 models. These may be changed
quickly and simply by the user in the event of a failure. For
maximum convenience all fuses are of the same value.
Additionally the PAT4 display will now indicate which fuse has
failed, unless of course it is main supply fuse in which case the
screen will be blank.
Replacement of Fuses
Always disconnect the PAT4 from the main supply before
checking fuses. Use correct replacement fuses as printed
adjacent to the fuse
Megger Part No. for replacement fuses 25950-014
Using your PAT4
Connecting to the Power supply
Plug the PAT4 into a standard 230 V supply for testing 230V
appliances or into a 110V supply for testing 110V appliances. A
110V ‘site’ or ‘tool’ transformer may be used.
On connecting to the supply, the PAT4 performs a rapid self-test
and calibration sequence. If the screen is dim, refer to Contrast
adjust.
* For 230 V 60Hz operation see note on Earth Leakage, page 45
5
Fuses

6
Features and Controls
TESTS
COMMS
CHECK-TEST
MENU
Auxiliary Earthing Point
(see Safety Warnings)
110V Appliance connection
230V Appliance connection Fuse test points
LCD display
Multi-function
Soft keys
Earth
Continuity connection
(200mA)
Earth Bond Connection
Lead test Connection
13A protection fuses
Mains power Connection
230V or 110V
Flash test socket
(Class 2 equipment)
(PAT4 DVF only)
Lead/Accessory
Storage
Barcode scanner/ PC
connection
Parallel
PrinterConnection
FS2
ESC/DEL key and
Multi-function soft key
FS4
OK key and
Multi-Function Soft key
SPACE=SHIFT + 0
Flash Test
Operation
FS1
Multi Function keys.
ESCape back to previous screen or used to DELete typed text.
OK when there is no displayed function.

7
Contrast Adjustment
PAT4 has been designed so that contrast adjustment will not normally be required unless working at extremes of temperature.
1 Press and hold the letter ‘C’ key during the full switch on sequence.
The Contrast screen is displayed.
2 Press the left hand keys repeatedly, to adjust the contrast as required
and press the OK key.
Reset to default Settings
If desired, the PAT4 can be reset to the factory default settings, and re-instate the demonstration data.
Note: All existing data and User configurations will be erased.
1Press and hold the letter ‘R’ key during the full switch on sequence.
The adjacent screen is displayed:
2 Confirm the request using the ‘Y’ key. On completion, you will be returned
to the Login screen.
3 Use ‘AVO’ and ‘1 2 3 4’ as the User / Pin to re-start.
Shortcut to Comms Upload (from PC)
If there is no useful data stored in PAT4, and it is required to upload new data from a PC,
this short cut allows direct access to the “COMMS RECEIVE” mode.
1 Press and hold the letter ‘U’ keyboard key during the full switch on sequence
The ‘Erase Data’ screen is displayed.
2 Press EXIT to cancel the erasure, or CONTINUE to proceed.
The ‘Are you sure ?’ screen is displayed.
3 Press the YES key to confirm, or cancel by pressing the NO key.
Results print-out after test
PAT4 can be selected to print a short report of the test results immediately after each test. To toggle the status of this feature from off to on or vice
versa, press and hold the ‘P’ key during the full switch on sequence. Note: No screen is displayed to show that the change has occurred.
Setting Up
Contrast
Reset to defaults ?
Confirm (Y/N)
Erase all data
EXIT CONTINUE

8
PAT4 accepts up to ten User names / PIN numbers at any one time, allowing only authorised persons to use the unit, if required. To input User names
and their respective pin numbers see ‘Settings’. Tests are attributed to the user that is currently logged in.
If you have not used the PAT4 before:
1 Type in the name AVO. Typing errors can be deleted using the ESC/DEL key. Press the OK key.
2 Type in the PIN number 1234 and press the OK key. The current Client will be briefly displayeD
followed by the Client screen.
3 Press the SELECT key. The Client Selection screen is displayed.
4 Press the NEXT key repeatedly. Each time the key is pressed, the next Client is displayed.
5 When the screen displays the desired client, press the OK key. This selects the displayed client as
the current client. The ‘Location‘ screen is now displayed.
6 Press the SELECT key in order to view and choose the site or building location.
7 Press the NEXT key repeatedly. Each time the key is pressed the next location within
the selected client is displayed.
8 When the screen displays the desired location, press the OK key.
This selects the displayed location as the site location you are currently using.
The Main screen is displayed.
Main Screen
The Client and Location need be selected only once for any particular site. PAT4 will assume the same settings until you deliberately logout from the Client. Even
if mains power is removed e.g. when moving around a site, if you have not logged out, the PAT4 will automatically return to the Main screen.
Logging in to the Unit
User:AVO
PIN: *
Client SELECT
LOGOUT ACCEPT
NEXT Client MORE
AVO INTERNATIONAL
Location SELECT
LOGOUT
NEXT Location MORE
ASHFORD SITE
TESTS QUICK-CHECK
COMMS MENU

9
User names and Pin numbers
Names and Pin numbers for up to 10 authorised Users can be entered at any time. Test results are individually credited to the person logged in at the time of
testing and downloaded to Megger software if used.
1 From the Main screen, press the MENU key.
2 From the Menu screen, press the SETTINGS key.
3 Press the USERS key.
4 To check current Users, press the LIST key.
5 Use the left hand keys to scroll through the user list. The user who is currently logged in is displayed with an
asterisk * against the name. To edit or erase a user scroll until the required user is displayed.
6Press the MORE key. The softkey options are displayed. From this screen you can ADD a new user, EDIT or
ERASE the currently displayed user.
7 To add a new user, press the ADD key.
8 Type in the new User name then press the OK key.
9 Type in the desired PIN number (4 digits), press the OK key to save the user and PIN.
To login a different User, the current User must first be logged out - refer to the Client/Location Selection flow
chart - press the LOGOUT key. The User/PIN screen is displayed.
TESTS QUICK-CHECK
COMMS MENU
ASSET
SETTINGS CLIENT
CLOCK
MISC USERS
LIST Users
LIST Users MORE
SMITH
ERASE Users
EDIT SMITH ADD
User
SMITH
PIN
5678

10
Setup Manual / Autopass Testing / Fail buzzer
If ‘AUTOPASS’ is selected, testing will proceed automatically with PAT4 determining the pass/fail status according to the pre-selected Group limits. If
‘MANUAL’ is selected, PAT4 will pause after each test and display a “Pass” / “Fail” decision prompt. The buzzer can be set to sound when a test fails
in AUTOPASS mode. To mute the buzzer following a failure, press the OK key.
1 From the Main screen, press the MENU key.
2 From the Menu screen, press the SETTINGS key.
3 Press the MISC key.
4 Press the TEST SETUP key. The current Manual / Autopass setting is shown.
5 Using the lower left key, toggle the Manual / Autopass setting as required.
6 To set up the Fail buzzer, press the BUZZER key. Using either the OFF or ON key,
switch the buzzer feature off or on as required.
7 On completion use ESCape to back up to the Menu screen (and Main screen if required).
TESTS QUICK-CHECK
COMMS MENU
ASSET
SETTINGS CLIENT
CLOCK
MISC USERS
TEST SETUP
COMPANY MEMORY
TEST TIMES
AUTOPASS BUZZER
Fail buzzer OFF
ON