Gossen MetraWatt SECULIFE ST PRO, Manual, Page: 35 / 114

GMC-I Messtechnik GmbH 35
8.6 Insulation Resistance Measurement – RINS
1
Connection for 2
nd
test probe for 2-pole measurement (feature H01)
Application, Definition, Measuring Method
Protection Class I Devices
–
Measurement type LN(TS) - PE(TS)
– DUT mains plug to test socket
Schematic Diagram
Insulation resistance is measured between short-circuited mains
terminals (L-N) and protective conductor PE.
Wiring Diagram
Protection Class II Devices
with Exposed Conductive Parts
–
Measurement type LN(TS) - P1
– DUT mains plug to test socket
– Test probe P1 to P1 terminals
Schematic Diagram
Insulation resistance is measured between short-circuited mains
terminals (L-N) and external conductive parts which can be con-
tacted with test probe P1 and are
not connected to the housing.
Wiring Diagram
Protection Class II Devices with Outputs for Safety Extra-Low Voltage
–
Measurement type LN(TS) - P1
– DUT mains plug to test socket
– Test probe P1 to P1 terminals
Schematic Diagram
Insulation resistance is measured between short-circuited mains
terminals (L-N) and the safety extra-low voltage outputs which are
contacted with probe P1.
Wiring Diagram
Single measurements, rotary switch level: green
Switch Po
si
ti
o
n
Measuring Functions Measurement
Type
Without Mains
to Test Socket
R
INS
R
INS
Insulation resistance ( PC I/PC II) LN(TS) - PE(TS)
LN(TS) - P1
P1 - P2
1
PE(mains) - P1
PE(TS) - P1
LN(TS) - P1//PE(TS)
LN(TS) - APP
PE(mains) - APP
PE(TS) - APP
P1//PE(TS) - APP
P2 - APP
U
INS
Test voltage
R
INS