Megger LRCD200 series Manual de usuario
M
LRCD200 Series
Combined Loop and RCD Tester
USER MANUAL
GSAFETY WARNINGS
■Safety Warnings and Precautions must be read and understood before the instrument is used. They must be observed during use.
■Continuity of protective conductors and earthed equipotential bonding of new or modified installations must be verified before carrying out RCD tests,
or earth fault loop impedance tests.
■Do not leave the instrument connected to the mains supply when not in use.
■Circuit connections and exposed metalwork of an installation or equipment under test must not be touched.
■Ensure that hands remain behind guards of probes/clips when testing.
■The instrument should not be used if any part of it is damaged.
■Test leads, probes and crocodile clips must be in good order, clean and with no broken or cracked insulation.
■The battery cover must be in place whilst conducting tests.
■Voltage indicator LED’s cannot reveal a N-PE supply reversal.
■National Safety Authorities may recommend the use of fused test leads when measuring voltage on high-energy systems.
■When making a 2 wire measurement with the 3 wire lead set, for safety reasons the black test lead should be connected together with the green test.
2
Users of this equipment and/or their employers are reminded that 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.
Some national safety authorities recommend fused leads for voltage measurement on high energy systems. If RCD or Loop tests are made it may cause the
fuse to rupture, and so they must be used with caution on voltage testing.
NOTE
THE INSTRUMENT MUST ONLY BE USED BY SUITABLY TRAINED AND COMPETENT PERSONS.
Replacing batteries and fuses 19
Low battery warning symbol 19
To replace batteries 19
Fuse blown indication 19
Preventive maintenance 20
Technical specification 20
Basic and service errors 22
Accessories and equipment 23
Repair and Warranty 24
Symbols used on the instrument are:
GCaution: refer to accompanying notes
tEquipment protected throughout by Double
Insulation (Class II)
cEquipment complies with current EU directives.
Equipment complies with ‘C tick’ requirements
CONTENTS
3
Safety warnings 3
Introduction 4
General description 5
Case contents 5
LCD Display 6
Front panel 6
Connection panel 7
Lid open/closure 7
Preparations for use 8
Batteries 8
Preliminary test lead check 8
General operating instructions 8
Display warning symbols 9
Setup procedure 9
Reverse polarity or line/neutral swapping 9
Test leads 10
Test lead connection. 10
LED indicators 11
Loop testing 12
Non-tripping loop test [No Trip] 12
Hi current loop test [Hi] 12
Phase-Earth loop impedance (not at a power socket): 12
Phase-Neutral or Phase-Phase loop impedance 13
Prospective fault current display [PFC] 13
Warning messages 13
Possible sources of error 14
Residual current device (RCD) testing 14
Voltage measurement 17
Phase to earth voltage measurement 17
Frequency Hz 17
Phase sequence (LRCD220 only) 18
N13117
INTRODUCTION GENERAL DESCRIPTION
Thank you for purchasing the Megger LRCD200 series.
For your own safety and to get the maximum benefit from your
instrument, please ensure that you read and understand the following
safety warnings and instructions before attempting to use the instruments.
This user manual describes the operation and functions of the following
LRCD series of Loop and RCD testers:
LRCD200
LRCD210
LRCD220
The LRCD200 series test instruments have the following
features
LRCD200 LRCD210 LRCD220
(not UK)
Loop testing
Non tripping loop test ■■■
PFC ■■■
Single phase ■■
Hi current loop test ■
Phase to phase ■
3 phase safe ■■■
Voltmeter ■ ■ ■
RCD test
1/2 x I test ■■
1 x I test ■ ■ ■
5 x I test ■ ■
Auto RCD ■
Touch/ Contact voltage display ■■■
Selectable 25/50 V touch
voltage ■ ■ ■
10, 30,100, 300, 500 mA ranges ■■■
1000 mA ■
CASE CONTENTS
5
There are important documents that you should keep for future reference.
Please complete the warranty card and return it to Megger as soon as
possible to help us reduce any delays in supporting you should the need
arise.
Carton contents LRCD200, LRCD210 and LRCD220
1 x LRCD series loop tester
1 x 3 wire test lead with prods with clips
1 x Plug ended test lead
8 x AA (LR6) batteries (fitted in instrument)
1 x Warranty card
1 x Certificate of test
1 x Calibration certificate
1 x CD containing user manual
1 x Quick start guide
LRCD200 LRCD210 LRCD220
(not UK)
DC Selective RCD tests ■■■
Selectable phase 0/180 ■■■
Ramp test (20% to 110%) ■■■
General testing
Frequency ■■■
Phase rotation ■
Reverse polarity operation
(Continental instruments only) ■■■
Backlight ■
Mechanical
BS1363, CEE7/7,
AS/NZS 3112 plug variants ■■■
IP54 ■■■
Working voltage 230 V ■■
Working voltage 110 & 230 V ■
6
LCD DISPLAY FRONT PANEL
Supply connection indicators
L-PE, L-N, N-PE
Front panel cover
(folded under
instrument)
Backlight
On/Off (220)
PFC (200/210)
Test lead
connections
LCD Display
Neck strap
slots
0º/180º
Lock(220)
Test button
Ranges
Measured results
Phase rotation
Fuse blown Mains noise
Battery status
Refer to User Manual
Touch
voltage
bargraph
display
RCD test
type
indicator
RCD type
selector:
AC
AC Selective
DC
DC Selective
PFC
(220)
RCD range select:
10mA
30mA
100mA
300mA
500mA
1000mA (220 only)
Test selector:
1/2x I RCD trip time (210/220)
1 x I RCD trip time
5 x I RCD trip time (210/220)
Ramp
V - AC RMS
Hz - Frequency
Phase ROT (220 only)
Auto RCD testing (220 only)
z
REAR PANEL CONNECTIONS CONTROL PADS
LRCD200
LRCD220
Lid open/closure
1. Open lid by lifting up front panel tab (1).
2. Fold-away underneath instrument (2 & 3) and push into retaining slot
(4).
LRCD 200/210
LRCD220
7
Warning
Read user guide
Warning
Read user guide
Earth connection or 2nd Phase connections (220 only)
Earth connection
Phase connection
Phase connection
Mains plug test
lead connector
Mains plug test
lead connector
PREPARATIONS FOR USE (ALL INSTRUMENTS) GENERAL OPERATING INSTRUCTIONS
8
Tests lock (LRCD 220 only)
The LOCK Lindicates when the [Hi] current loop test range is locked
ON.
It is activated by holding down the Llock button, and pressing the
[TEST] button. When activated, the [Hi] current loop resistance
measurement will start when the instrument is connected to a voltage.
The test lock remains on for 30 seconds, after which it resets to off.
Test inhibit
The following conditions may cause the instrument to inhibit testing:
Out of range supply voltage
If an out of range voltage or frequency exists on the circuit under test,
or on a very noisy mains supply, testing will be automatically inhibited.
The RCD tests requires a minimum supply voltage to operate.
If the warning <***V is displayed, the supply voltage is below that
required to perform an RCD test.
*** = supply voltage indication.
Overheating
Repetitive loop testing generates heat within the instrument. If this
heat becomes excessive the instrument will warn the operator and
prevent further testing until the instrument has had a chance to cool
down.
Fuse Blown
A fuse blown will prevent the instrument from making further tests.
The fuse indicator will be displayed.
Batteries
The Megger LRCD series instruments are supplied with batteries fitted.
When batteries become exhausted, refer to page 19, battery replacement.
WWaarrnniinngg::Do not switch the instrument on with the battery cover
removed.
Preliminary test lead check
Functional verification
Before each use of the instrument visually inspect the test leads, prods
and crocodile clips to confirm that their condition is good, with no
damaged or broken insulation.
Default voltmeter
The default voltmeter automatically operates in all test modes, indicating
connection to a live system.
Auto Power-down
To extend battery life the instrument will automatically switch off six
minutes after the last operation.
The instrument can be switched off manually by selecting [OFF] with the
rotary switch, or switched back on again by pressing the [TEST] button.
Backlight operation (LRCD 220 only)
The LRCD LCD display may be backlit, to allow readings to be seen in
adverse lighting conditions. The backlight function can be selected at any
time while the instrument is switched on by pressing the BACKLIGHT J
button.
The backlight function will switch off automatically 15 seconds after the
instrument has finished testing.
Display warning symbols
GRefer to user manual.
Any time the warning triangle is displayed the operator should refer to the
user manual for further information.
LRange lock
Displayed at any time the [TEST] button is locked in the on position.
Battery condition indication. Refer to page 19.
fFuse blown indicator, appears when an instrument fuse has
failed. Refer to page 19.
>280V Displayed on the LRCD200/210 indicates a supply voltage in
excess of that allowed is present.
>480V Displayed on the LRCD220 indicates a supply voltage in excess of
that allowed is present.
hot Indicates the instrument needs to cool down before it can continue
loop testing
Noise on the circuit under test may affect the reading
Setup Procedure
Reverse polarity or line/neutral swapping
This feature is only available on the following models:
LRCD200-EN-SC LRCD210-EN-SC LRCD220-EN-SC
LRCD200-FR-SC LRCD210-FR-SC LRCD220-FR-SC
LRCD200-DE-SC LRCD210-DE-SC LRCD220-DE-SC
LRCD200-NL-SC LRCD210-NL-SC LRCD220-NL-SC
LRCD200-ES-SC LRCD210-ES-SC LRCD220-ES-SC
The set-up menu allows the user to change the way the instrument
behaves when testing on a supply with Line and Neutral connections
swapped. Tests may be permitted or prohibited.
To select Polarity reversal acceptance or rejection:
1. With the instrument switched OFF, hold down the [TEST] button and
turn the range knob to any ON position.
2. Keep the button held down until the instrument displays the ‘SET’
warning.
3. Now release the [TEST] button.
4. Press the [TEST] button again to view the current setting for line/neutral
swapping.
5. The display shows ‘L+L’ (instrument will perform tests with L & N
9
10
your type of socket outlets, do not use an adaptor. You may change the
plug once only by cutting the cord as close to the plug as possible and
fitting a suitable plug.
The colour code of the cord is:
Earth (Ground) Yellow/Green
Neutral Blue
Phase (Line) Brown
Note: A plug severed from the power cord must be destroyed, as a plug
with bare conductors is hazardous in a live socket outlet.
Test lead connection
The supplied test leads should be connected to the appropriate sockets on
the rear of the instrument marked L0 and L1, or to the 3 way test socket.
Standard test probes and crocodile clips are supplied for connection to the
circuit under test.
The test lead supplied with the LRCD200, LRCD210 and LRCD220 provides
connection for 3 wire testing, using the 3 wire (red, black and green) lead
set (6220-782) or mains plug lead (6220-740).
Application
This instrument may be connected live to earth or between live
conductors of systems that have a rated voltage of 300V a.c. rms to earth
and an installation (overvoltage) Category III or lower.
This means that the instrument may be connected to any fixed wiring of a
building installation, but not to primary supply circuits such as overhead
cables. To maintain user safety and ensure accurate measurements, only
use the test leads supplied or by Megger Limited.
swapped) or ‘L+N’ (instrument will not perform tests with L & N
swapped).
6. Press the [LOCK] button or the PFC button to change the setting.
7. Press the [TEST] button to exit from the set-up menu.
RCD Touch voltage selection
TToosseetttthheettoouucchhvvoollttaaggeeiinnhhiibbiittlliimmiitt::
1. With the instrument switched OFF, hold down the [TEST] button and
turn the range knob to any ON position.
2. Keep the button held down until the instrument displays the ‘SET’
warning.
3. Now release the [TEST] button.
4. Press the [TEST] button twice to view the current settings for the touch
voltage.
The display shows the fault voltage limit, ‘25 V’ or ‘50 V’.
If the fault-voltage display is active, a bar-graph display will also appear.
5. Press the [0º/180º] button to change the limit setting from 25V to 50V
and back.
6. Press the [TYPE] button to turn bar-graph display ON or OFF.
7. Press the [TEST] button to exit from the set-up menu.
Test leads
All test leads form part of the measuring circuit of the instrument and
must not be modified or changed in any way, or be used with any other
electrical instrument or appliance.
The mains plug test lead supplied with the Megger Tester is a test lead that
forms part of the measuring circuit of the instrument. The overall length
of this lead must not be altered. If the power cord plug is not suitable for
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