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Non tripping loop test [NO TRIP]

Range switch set to the [NO TRIP]
Test Lead Options 1, 2 or 3

NOTE:

A 3-Wire connection must be used.

Select when loop testing circuits with RCD protection fitted.
1) Firmly connect the GREEN lead to EARTH, the BLACK lead to 

NEUTRAL and the RED lead to PHASE. (Alternatively insert 
the plug into an installation socket) (OPTION 3).

2) Supply voltage and polarity are displayed.
3) The test will ‘beep’ and automatically start when a voltage is 

detected.

4) Measured L-PE loop value is displayed.

The measured value may differ to the anticipated value. This is
caused by noise on the supply (

).

Repeating the test may result in a different reading if this is the
case refer to page 13 of the handbook for possible solutions.

The test can be repeated by pressing the YELLOW test button.

Warning:

Live voltages present on test circuits during tests.

High current loop test [Hi]

For use on circuits with NO RCD protection fitted.

Warning: 

The LCD 'Neons' are invalid when using the two wire

connection and should be ignored. 

OPTION 3

Mains plug

test lead

OPTION 2

Switched

Probe

OPTION 1

2 wire lead

set

OPTION 3

Mains plug

test lead

OPTION 2

Switched

probe

OPTION 1

3 wire

measurement

BLACK

GREEN

GREEN

BLACK

GREEN

RED

PROBE

RED

GREEN

PROBE

Summary of Contents for MFT1500/2

Page 1: ...features and should not be regarded as a substitute for normal safe working practices Do not move the rotary switch positions while a test is in progress The LCD neon voltage indicators cannot reveal...

Page 2: ...lectricians should be used Symbols used on the instrument are F Caution risk of electric shock G Caution refer to accompanying notes t Equipment protected throughout by Double Insulation Class II c Eq...

Page 3: ...100 Warning Ensure the circuit to be tested is disconnected and isolated before starting testing Insulation testing M Range switch set to 250 V 500 V or 1 kV range Test Lead Options 1 or 2 For insulat...

Page 4: ...ed value may differ to the anticipated value This is caused by noise on the supply Repeating the test may result in a different reading if this is the case refer to page 13 of the handbook for possibl...

Page 5: ...the RED lead to 1st PHASE Bonded Metalwork Testing Hi Test Lead set OPTION 1 or 2 1 Connect the GREEN lead to the bonded metalwork 2 Connect the RED lead to PHASE 3 Supply voltage is displayed 4 The...

Page 6: ...Connect the test leads to the RCD as shown above 3 Press the YELLOW test button on the instrument or the switch probe On 1 2I the message 1999 ms is displayed after 2 seconds NOTE The message TrP will...

Page 7: ...enabled by a long press on the blue degree button As selective RCD test mode is enabled the MFT will emit a long beep and the display will show the exclamation mark symbol To disable Selective RCD mod...

Page 8: ...it 1 T 1 416 298 6770 Scarborough Ontario M1S 3R2 F 1 416 298 0848 Canada E casales megger com This instrument is manufactured in the United Kingdom The company reserves the right to change the specif...

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