Fluke 1650B [32/62] Warning

165XB

Users Manual

special nominal current setting other than the standard options, you can use a

custom setting with the VAR mode.

Note

When measuring trip time for any type of RCD, the tester first does a

pretest to determine if the actual test will cause a fault voltage

exceeding the limit (25 or 50 V). To avoid having an inaccurate trip

time for S type (time delay) RCDs, a 30 second delay is activated

between the pretest and the actual test. This RCD type needs a delay

because it contains RC circuits that are required to settle before

applying the full test.

XW Warning

• Test the connection between the N-conductor and earth

before starting the test. A voltage between the N-conductor

and earth may influence the test.

• Leakage currents in the circuit following the residual current

protection device may influence measurements.

• The displayed fault voltage relates to the rated residual

current of the RCD.

• Potential fields of other earthing installations may influence

the measurement.

• Equipment (motors, capacitors) connected downstream of

the RCD may cause considerable extension of the tripping

time.

Note

If the L and N terminals are reversed, the tester will auto-swap them

internally and continue testing. If the tester is configured for UK

operation, testing will halt

and you will need to determine why the L

and N are swapped

. This condition is indicated by arrows above or

below the terminal indicator symbol (b).Type A RCDs do not have

the 1000mA option available.

To measure RCD tripping time:

1. Turn the rotary switch to the ΔT position.

2. Press 1 to select the RCD current rating (10, 30, 100, 300, 500, or 1000

mA).

3. Press 2 to select a test current multiplier (x ½, x 1, x 5, or Auto). Normally

you will use x 1 for this test.

Note

Model 1651B does not allow the Auto Selection.