41. Electrical safety test with ABB Metrawatt M 5013
I) Mains voltage test: Volt = V
● For all following tests insert the plug of the ABB Metrawatt M 5013 in the grounded mains socket.
● Set the switch for the measuring range at “250 V” (figure 1).
If there is mains voltage present, the LCD display shows how much (230 V +/- 10%).
● Touch the contact field, which is a little to the right and below the knob for the measuring range,
with your finger, thus checking the ground lead of the mains. Signal lamp “PE” just above
the contact field will light up only if the ground lead is out of order.
● Insert the plug of the sewing machine into the mains socket of the ABB Metrawatt M 5013.
● Run the machine.
● Meter reading: 230 V +/- 10%
● Measuring appliance M 5013 can only be used with mains voltages from 207 V to 253 V
(230 V +/- 10%).
II) Appliance current test: Ampere = A
● The plug of the sewing machine remains in mains socket.
● Set the switch for the measuring range at 16 A (figure 2).
● Run the machine.
● Meter reading: 0.85 A maximum.
III) Insulation resistance: M Ohm = M
● Insert the plug of the sewing machine into the tester socket.
● Use the clamp to attach the test lead of testing appliance M 5013 to the presser bar.
● Set the switch for the measuring range at “20 M Ohm” (figure 3).
● Meter reading: minimum 2 M Ohm
● In the case of meter readings higher than 20 M Ohm, appliance M 5013 displays the digit 1!
In these cases, the remark “Insulation resistance higher than 20 M Ohm” must be recorded in
the testing report.
IV) Stray current: Milliampere = mA
● The sewing machine plug remains in the tester socket.
● Use the clamp to attach the test lead of testing appliance M 5013 to presser bar.
● Set the switch for the measuring range at “20 mA” (figure 4).
● Meter reading: maximum 0.25 mA.
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