MI 3121 Smartec Insulation / Continuity
Insulation resistance
21
5 Measurements
5.1 Insulation resistance
Insulation resistance measurement is performed in order to assure safety against electric
shock through insulation. It is covered by the EN 61557-2 standard. Typical applications
are:
Insulation resistance between conductors of installation,
Insulation resistance of non-conductive rooms (walls and floors),
Insulation resistance of ground cables,
Resistance of semi-conductive (antistatic) floors.
See chapter
4.1 Function selection
for instructions on
key functionality.
Figure 5.1: Insulation resistance
Test parameters for insulation resistance measurement
Uiso
Test voltage
[50 V, 100 V, 250 V, 500 V, 1000 V]
Limit
Minimum insulation resistance
[OFF, 0.01 M
Ω
÷ 200 M
Ω
]
Test circuits for insulation resistance
Figure 5.2: Connection of universal test cable
