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Note: 

  Third lead can be connected. The third lead will enable reverse 

polarity detection.

MEASUREMENT: 

Press and release TEST button.

Supply: 

  

L-E = 90 Vac - 280 Vac L1(in) -L2(out) = 90 Vac –  

 

  

480 Vac (Phase - Phase)

Functions: 

   

   

0º and 180º (Quick press), Type AC, A, S, B    

 

  

selection (Press and hold)

RCD 

   

    

1700 series run 1/2xI, 1xI(0º), 1xI(180º), 5xI(0º),  

 

  

5xI(180º) automatically.

 

  

1800 series run 1/2xI, 1xI(0º), 1xI(180º), 2xI(0º),  

 

  

2xI(180º) & 5xI(0º), 5xI(180º)

RCD 

   

    

Adjustable RCD trip current. Use

   

 and 

   

to  

 

  

adjust current.

Warnings:    

Touch voltage >50 V

SETUP options: 

Touch voltage 25 V, 50 V (Default 50 V)

RCD ramp testing [mA] –

 Measures trip current of RCD

                                

                          

Note:

 Third lead can be connected. The third lead will enable polarity 

detection. 

MEASUREMENT: 

Press and release TEST button.

Functions: 

   

  

Fast Ramp 

 - Pass/Fail test between 50% and 

100%  

  

 

of range

 

  

Slow Ramp 

 – Displays trip current in mA

Warnings:    

Touch voltage >50 V

 

  

Reverse polarity

SETUP options: 

Touch voltage 25 V, 50 V (Default 50 V)

Main 

range

knob 

2nd Range

knob

Terminal

connections

Separate 

leads

Mains lead

connections

User 

Action

Press 
TEST 

button

   

   

   

   

All manuals and user guides at all-guides.com

all-guides.com

Summary of Contents for MFT1700 series

Page 1: ...ded as a substitute for normal safe working practices n Do not move the rotary switch positions while a test is in progress n Do not operate the instrument or connect it to any external system if it s...

Page 2: ...ke all necessary special precautions applicable to the particular location and do not touch the test leads with bare hands LIVE EARTH SAFETY PRECAUTIONS n A Live earth is one that carries current from...

Page 3: ...manor other than those defined in this user guide the protection capabilities could be impaired with potential risk to the operator and the instrument Symbols used on the instrument are G Caution ref...

Page 4: ...play shows resistance small display shows test current Lead Null To null leads connect test leads together and press TEST Null indicator appears To remove Open circuit leads and press TEST Main range...

Page 5: ...F Buzzer threshold Sounds above 0 5 M adjustable in SETUP Warnings Ensure circuit to be tested is disconnected and isolated Live circuit warning at 25 V or 50 V Default 50 V SETUP options Insulation b...

Page 6: ...t current Warnings Touch voltage 50 V SETUP options Touch voltage 25 V 50 V Default 50 V RCD ramp testing mA Measures trip current of RCD Note Third lead can be connected The third lead will enable po...

Page 7: ...te Third lead can be connected The third lead will enable polarity detection Loop impedance R1 R2 testing mA MEASUREMENT Select Zref and make measurement at Ze or Zdb This is automatically saved Zref...

Page 8: ...om Megger Pty Limited Unit 26 9 Hudson Avenue Castle Hill T 61 0 2 9659 2005 Sydney NSW 2125 F 61 0 2 9659 2201 Australia E ausales megger com Megger Limited T 1 416 298 9688 Canada only 110 Milner Av...

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