Megger MFT1825 User Manual

8.5 2 x I RCD Current Rating (Tripping test on 30mA RCD) – MFT1825 & 1835 ONLY
1. Repeat the test sequence in 8.4 but with the LEFT rotary range knob to the
2I
RCD test range.
2. Press the
mode button to select 0º.
3. Press the TEST button.
X
Touch voltage limit
Measured touch voltage
RCD Trip time
RCD Type
RCD Test mode
4. Press the mode button to select 180º.
5. Repeat the above test.
Record the higher of the two values:
>150 ms = RCD FAILED (no trip)
<150 ms = RCD Passed
8.6 5 x I RCD current rating (Tripping test on 30 mA RCD)
Repeat the test sequence in 8.5 but with the LEFT rotary range knob to the
5I
RCD test range.
1. Press the mode button to
select 0º.
2. Press the TEST button.
The display should show one of the
following:
*any value below 40 ms indicates an
RCD has tripped in an adequate time.
X
Touch voltage limit
Measured touch voltage
RCD Trip time (no trip)
RCD Type
RCD Test mode
3. Press the mode button to select 180º.
4. Repeat the above test.
Record the higher of the two values:
>40 ms = RCD FAILED (no trip)
<40 ms = RCD Passed
www.megger.com MFT1800 series
41
Residual Current Device (RCD) or Ground Fault Current Interrupt (GFCI) testing

Megger MFT1825 Specifications

General

Brand	Megger
Model	MFT1825
Category	Test Equipment
Language	English