MFT1500 Series
Combined Insulation, Loop & RCD Tester
MFT1500 Series
Combined Insulation, Loop & RCD Tester
■ Combined 16th Edition testing
■ Guaranteed non-tripping loop test range
■ Backlit display and selector ranges
■ Automatic RCD testing (MFT1552 &
MFT1553 only)
■ Bluetooth downloading (MFT1553 only)
■ Illuminated switch probe
■ Selectable touch voltage
■ Touch (fault) voltage and display
DESCRIPTION
The MFT1500 series multifunction tester has been revised to
include some additional new features:
Called the MFT1500 series, they retain all the essential
features necessary for testing domestic, commercial and
industrial fixed wiring, and now include the following:
■ PFC measurement on both loop test ranges
■ Selectable Fault (Touch) voltage 25 V or 50 V
■ Fault (Touch) voltage display
■ New Megger lead set included with all instruments
■ DC test functions for RCDs
All instruments test in accordance with International
Standards and National Wiring Regulations including BS7671
(16th Edition wiring regulations) and European Standard
EN61557.
In addition, the MFT1500 series also meets or exceeds the
requirements of EN61010-1 Category III 480 V (max) phasephase.
The MFT1500 is available in 4 options, the standard
MFT1501/2 the MFT1502/2 which includes useful additional
facilities such as backlit display and range switches, plus the
unique Megger illuminated switched probe, the MFT1552
which has an automatic RCD test feature, and the MFT1553
which has Bluetooth downloading capability
The unique modern styling of the instruments allows it to
be operated whilst stood on the floor, a ledge, hung around
the neck with the supplied neck strap, or held in the hand.
■ Calibrated earth loop test lead
■ Calibration certificate
FEATURES
The MFT1500 series uses the patented Megger digital/
analogue arc display. The analogue arc provides an
indication of fluctuating readings, while the digital readout
providing the ability to record accurate results.
All test functions are selectable from the main panel, with
no hidden ranges or functions to forget.
Special functions include:
VOLTAGE MEASUREMENT
■ AC/DC Volt meter provides a means of measuring the
supply voltage independently of any other test functions,
eliminating the need to carry a separate multimeter.
Automatic selection of AC or DC measurement up to
500 V a.c./d.c.
CONTINUITY TESTING
■ 200 mA continuity from 0.01 Ω to 99.9 kΩ exceeds all
current requirements for testing final ring circuit
conductors, and bonding of services.
■ Automatic continuity testing commences the moment
the test probes touch the circuit to be tested, allowing
fast testing with both hands free.
■ Fast continuity buzzer is a fast buzzer tone, with no
delay on each test for the buzzer to sound, saving
valuable operator time. This test includes a fast safety
check for the presence of a voltage as the test probes
are connected to the circuit.
MFT1500 Series
Combined Insulation, Loop & RCD Tester
■ Variable buzzer threshold controls the limit at which
the continuity buzzer stops sounding. Selected from 2 Ω
to 100 Ω in 6 steps.
■ Lead null stores the test lead resistance and deducts this
value from the continuity result, even if the instrument is
switched off. Thus reducing the chance of possible
measurement errors.
Insulation testing:
■ Insulation test at 250 V, 500 V and 1000 V for testing
low voltage applications. A 1000 V warning is issued
prior to performing the 1000 V insulation test.
■ Live circuit warning when performing insulation or
continuity measurements a live circuit warning is
displayed and an audible warning sounded if connected
to a circuit with a voltage greater than 25 V (15 V for
continuity testing).
■ Safety lockout at voltages greater than 55 V during
continuity and insulation testing, the instrument
automatically warns the operator and inhibits any
testing, preventing accidental damage to the instrument
and full protection to the operator.
■ The ‘Auto discharge’ facility safely discharges all
circuits after an insulation test, preventing accidental
shock from a stored charge on a long cable during or
after disconnection.
LOOP TESTING
■ Low current loop test is a 3 wire non-tripping
0.01 Ω loop test designed to prevent RCD tripping by
using a sophisticated 15 mA loop test pioneered by
Megger Limited. This NO-TRIP test ensures the RCD will
not trip whilst performing a loop impedance test.
■ High current loop test at 25 A provides a fast loop test
where no RCD is fitted, or for Ze measurement on the
incoming side of an RCD.
■ Supply voltage and polarity indication upon
connection to the mains supply the polarity and voltage
are displayed to show correct wiring of the socket under
test or test lead connections. This function also provides
a warning of live voltages while continuity or insulation
testing.
■ Phase-Phase Phase-Neutral and Phase-Earth Loop Tests
are possible. No danger of damage from accidental 3phase connection.
■ Wide supply voltage; allows loop measurements from
55 V to 480 V. No damage if accidentally connected
across phases.
■ Prospective short-circuit current (PSC) A dedicated
PSC range, using either the 25 A high current loop test or
no-trip test, is provided for rapid measurement of Loop
currents, both at the socket outlet and distribution
board. The PSC ranges from 1 A to 19.9 kA with a
resolution of 1 A, 10 A and 100 A depending on range. All
the loop and PSC tests are auto-ranging.
RCD TESTING:
■ 10 mA to 1000 mA RCD ranges. All standard RCDs
from 10 mA to 1000 mA are fully supported. All standard
RCD test functions are available with both 0° and 180°
phase angle at
■ RCD ramp test measures the RCD trip current. The
1/2I, I and 5I up to 300 mA.
ramp test displays the actual trip current on all RCD
ranges instead of trip time. Ideal for identifying nuisance
tripping RCDs. The current is stepped up from
1/2I to I in
200 ms steps.
■ Fault (Touch) voltage can now be set for either 25 V or
50 V depending on application.
■ Fault/touch voltage can also be displayed up to 100 V on
a selectable bargraph.
■ DC sensitive, RCD test option enables testing at 1/2I,
I and 5I.
GENERAL FEATURES:
■ Quick to pick up and use by using colour coded
ranges and no hidden functions the MFT1500 series takes
minutes to learn how to use. Function buttons are
colour matched to the test mode to ensure easy
operation.
■ Visible and audible Safety warning features are
paramount with live circuit warning and protection
circuitry. If live voltages exist on a circuit during
insulation or continuity testing the voltage is displayed
on the screen. If this voltage exceeds a safe level, the
MFT1500 series inhibits further testing and a warning
beeper sounds for extra safety.
■ Large easy-to-read LCD using the patented Megger
digital/analogue arc technology - combining high speed
analogue clarity with digital stability. Making it easy to
read even in low light level.
■ Economical with batteries by incorporates an auto
shut off facility that operates after 5 minutes of inactivity,
reducing wasted battery consumption.
■ Innovative test lead connection has been developed
for the MFT1500 series. The unique shutter system
allows only those combinations of test leads permitted
for safe testing to be connected. Unsafe or unnecessary
options cannot be connected.
■ Rubber over-moulded case. The ergonomic rubber
moulding provides a secure comfortable hold, whilst
providing maximum protection with IP54 weather proof
rating.
■ Calibration certificate
■ 3 year warranty
MFT1502/2 Additional features
Illuminated switched probe shines a new light on
testing.
A fully featured test probe allows for single-handed
operation and test status indication. Probe features include:
■ Remote test button for single-handed testing in difficult
locations, the test button duplicates the instrument test
MFT1500 Series
Combined Insulation, Loop & RCD Tester
button in all test modes.
■ LED torch using a built-in WHITE LED light provides illu-
mination to the probe tip, providing essential lighting in
low light conditions.
■ Red/green status LED duplicates the warning display on
the main instrument display. A RED LED indicates a
voltage present on an insulation range. A GREEN LED
indicates the instrument is displaying a valid test result.
■ Three interchangeable probe tips are supplied in
standard shrouded, removable shrouded and an extended
probe tip to provides the ideal probe tip option.
■ Illuminated display and selector ranges. Not only the
backlight, but also the selector dials are illuminated to
allow for use in difficult low-light conditions. Range or
function change automatically operates the backlight, or
by manual selection.
■ Instrument and document carry case is supplied to
transport the instrument as well as any necessary test
leads, documents, drawings etc.
MFT1552 & MFT1553 Additional features
Selecting the auto (RCD) feature, starts the RCD test current
cycle of
1/2I, I and 5I.
Each time the RCD is tripped, resetting it, automatically
continues the test sequence.
Once completed, test results can be recalled on the
MFT1552.
MFT1553 Additional features
Using the Bluetooth function, download test results directly
into inspection certificates, within PowerSuite
laptops and mobile devices for on-site certification.
Alternatively the data can be downloaded into Mobile
Download Manager for storage and later processing.
®
running on
SPECIFICATION
Supply Voltage range
Voltage a.c.:
0 V - 500 V 50/60Hz ±2% ±2 digits
Voltage d.c.:
0 V - 500 V ±2% ±2 digits
Polarity indicated above 10 V
Insulation test ranges (to EN 61557-2)
Short circuit current: <2 mA
250 V 0.01 MΩ - 99.9 MΩ
500 V 0.01 MΩ - 299 MΩ
1000 V 0.01 MΩ - 499 MΩ
±2% ±2 digits up to 99 MΩ
250, 500 and 1 kV into 1 mA (BS7671, HD384 and IEC364)
Output voltage: +20% - 0% at rated load or less
Live circuit warnings
Insulation:
25 V threshold
Continuity:
>15 V threshold
Insulation
25 V visual warning
55 V visual, audible and test inhibit
Phase to earth:
>280 V visual, audible and test inhibit
Continuity (to EN 61557-4)
Ohms:
0.01 Ω - 99.9 Ω (±2% ±2 digits)
100 Ω - 99.9 kΩ (±5% ±2 digits)
Buzzer
Selectable limits of 2 Ω, 5 Ω, 10 Ω, 20 Ω, 50 Ω, 100 Ω
Open circuit voltage 4-5 V d.c.
Test current:
>200 mA @ 2 Ω
Test Lead null:
Up to 9.99 Ω (zero uses Test Button)
Loop test ranges (to EN 61557-3)
Line/Earth(Single phase)
25 A
0.01 Ω - 9.99 Ω (±5% ±0.03 Ω)
10.0 Ω -89.9 Ω (±5% ±0.5 Ω)
90 Ω - 899 Ω (±5% ±5 Ω )
900 Ω - 3.00 kΩ (±5% ±20 Ω)
Supply:
55 V - 280 V 45 Hz to 65 Hz
Phase to phase
25 A
0.01 Ω -1 9.99 Ω
(±5% ±0.03 Ω)
Supply:
55 V - 480 V 45Hz to 65Hz
Low current Loop (NO TRIP)
15 mA
0.01 Ω - 2.00 kΩ (±5% ±0.03 ohms ± Noise Margin).
Supply:
55 V - 270 V 45Hz to 65Hz
Prospective Shortcircuit Current PSC
Prospective fault current = Nominal Voltage/Loop Resistance
Accuracy is therefore derived from the loop test.
1 A - 199 A 1 A resolution
0.02 kA - 1.99 kA 10 A resolution
2.0 kA - 19.9 kA 100 A resolution
MFT1500 Series
Combined Insulation, Loop & RCD Tester
RCD ranges (to EN-61557-6)
Supply:
100 V - 270 V 45Hz to 65Hz
Ranges:
1000 mA, 500 mA, 300 mA, 100 mA, 30 mA, 10 mA
1/2I - 1/2 times the selected RCD rated current.
Type:
I - One times selected RCD rated current.
5I - Five times I RCD rated current.
RAMP - A ramp test that displays actual trip current .
DC sensitive - A DC test current at
1/2I, I and 5I.
Current accuracy:
1/2I) -8% to -2%
No trip (
Trip (I) and
5I +2% to +8%
Trip time accuracy:
±1% ±1 ms
Touch (Fault) voltage: 0 V to 100 V error ±5% to +15% ±0.5 V
Selection: 25 V or 50 V
Power supply
8 x 1.5 V Alkaline cells type LR6
Fuses
Replaceable 500 mA (F) HBC 10 kA 500 V
Non-replaceable 7 A (SIBA 70-065-63) x 2
Non-replaceable 1 A
Remote probe: MFT1502/2 and MFT1552 only
Torch feature: 5mm WHITE LED 1500 mcd
Safety: CLASS 1 LED to IEC 60825:2001 Interchangeable tips
Battery: 1 x 9 V Alkaline cell type PP3
Fuse: Non-replaceable 7 A (SIBA 70-065-63)
ORDERING INFORMATION
Safety
Double insulated to IEC61010-1-2001, Installation Category III,
300 V phase to earth, 500 V phase to phase.
In addition Probe designed to meet IEC 61010-031-2002, Double
insulated to Installation Category III, 300 V phase to earth, 500 V
phase to phase.
EMC
In accordance with IEC 61326 including amendment No. 1
Environmental
Operating range: -5 to +40ºC
Operating humidity: 90% RH at 40ºC max
Storage temperature: -25 to 65ºC
Maximum altitude: 2000 m
Dust and water protection: Instrument IP54, probe no rating
Physical
Dimensions:150 mm high x 85 mm wide x 235 mm deep
(6 in. x 3.5 in. x 9.5 in.)
Weight:1440 gms (3lb)
EN61557:
Complies with the following parts of 61557, electrical safety in
low voltage systems up to 1000 V a.c. and 1500 V d.c.Equipment for testing, measuring or monitoring of protective
measures:-
Part 1- General requirements
Part 2- Insulation resistance
Part 3- Loop resistance
Part 4- Continuity
Part 6- Residual current devices (RCD)
Part 10- Combined measuring equipment
The Bluetooth word mark and logo are owned by the Bluetooth SIG. Inc.
and any use of such marks by Megger is under licence.
Item (Qty) Order No.
Multifunction tester standard MFT1501/2
Multifunction tester with illuminated switch probe
MFT1502/2
Multifunction tester standard (European) MTF1501/2E
Multifunction tester with illuminated switch
probe (European) MFT1502/2E
Multifunction tester with automatic RCD testing MFT1552
Multifunction tester with automatic
Bluetooth downloading MFT1553
Accessories included with MFT1501
User guide on CD 6172-831
3 wire test lead
Crocodile clips (red, black and green)
Mains plug (BS1363) test lead
UK
Archcliffe Road Dover
CT17 9EN England
T +44 (0) 1304 502101
F +44 (0) 1304 207342
UNITED STATES
4271 Bronze Way
Dallas TX 75237-1019 USA
T 800 723 2861 (USA only)
T +1 214 333 3201
F +1 214 331 7399
Item (Qty) Order No.
Additional accessories with MFT1502/MFT1552/MFT1553
As MFT1501/2 plus:
Illuminated switched probe
Instrument/document carry case
Optional accessories for MFT1500 Series
PowerSuite On-site (MFT1553 only) 6111-777
Replacement 3 wire test lead set 6220-796
Fused prod and clip set 6180-405
Standard switched probe 6220-836
Illuminated switched probe 6311-089
Test lead with Schuko plug 6231-593
Test lead with UK mains plug 6220-740
Test lead with USA mains plug 6220-643
Earth bond test lead set 6231-586
Instrument/document carry case 6420-143
Illuminated probe tip set 6121-562
OTHER TECHNICAL SALES OFFICES
Norristown USA, Toronto CANADA,
Mumbai INDIA, Trappes FRANCE,
Sydney AUSTRALIA, Madrid SPAIN
and the Kingdom of BAHRAIN.
Registered to ISO 9001:2000 Cert. Q 09290
Registered to ISO 14001:1996 Cert. EMS 61597
MFT1500_SERIES_DS_en_V07
Megger is a registered trademark
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