Tietzsch omegaMegaSafe ISO 1Ex Bedienungsanleitung Seite 30

5.7 Insulations resistance:
e. g. wire - wire isulation of cables
 Make sure no electrical consumer is connected
and the safety-related limit values of the plant are
respected
 Connect the upper and lower sockets of the
ΩMegaSafe ISO 1Ex with the measuring lines and
connect the open ends of the measuring lines
securely to the wires of the cable
 Chose 32 V test voltage
 Test the insulation resistance with the
ΩMegaSafe ISO 1Ex.
 Determine the capacitance of the connected
cable (see section 4.5)
 If the safety-related limit values of the plant and
the determined capacitance permits a higher test
voltage switch to the next higher test voltage.
 Test the insulation resistance with the ΩMegaSafe
ISO 1Ex at the maximum allowed test voltage for
a meaningful measuring result.
Note: If a very low-resistance value is indicated
maybe an electrical consumer is still connected.
30
cable
wire