Gossen MetraWatt SECUTEST ST BASE - Insulation Resistance Measurement - RINS

50 Gossen Metrawatt GmbH
15.7 Insulation Resistance Measurement – RINS
1
Connection for 2
nd
test probe for two-pole measurement with test instru-
ment including feature H01 (e.g. SECUTEST ST PRO)
Application, Definition, Measuring Method
Protection Class I DUTs
– 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 DUTs
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 DUTs 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 short-circuited safety extra-low voltage
outputs which are contacted with probe P1.
Wiring Diagram
Single Measurements, Rotary Switch Level: Green
Rotary Switch Position
Measuring Functions Meas. 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)
U
INS
Test voltage
R
INS