
GMC-I Messtechnik GmbH
31
8.5
Measuring Protective Conductor Resistance – RPE
1
10/25 A RPE measurements are only possible with line voltages of 115/
230 V and line frequencies of 50/60 Hz.
2
Connection for 2
nd
test probe for 2-pole measurement (instrument with
feature H01)
3
Only instruments with feature G01
4
Can only be selected if the IP(set) parameter has been set to 200 mA.
Application, Definition, Measuring Method
Protective conductor resistance is the sum of the following resis-
tances:
•
Connector cable or device connector cable resistance
•
Contact resistance at plug and terminal connections
•
Extension cord resistance if applicable
Protection Class I Devices
–
Measurement type PE(TS) - P1 (passive)
– DUT mains plug to test socket
– Test probe P1 to P1 terminals
Schematic Diagram
Protective conductor resistance is measured between the earth-
ing contacts at the mains plug and the earthing contact con-
nected to the housing by contacting the housing with test probe
P1.
Wiring Diagram
Measurement of RPE at Single-Phase Extension Cords with EL1
–
Measurement type PE(TS) - P1 (passive)
– Extension cord plug to test socket
– EL1 to P1 terminals
Schematic Diagram
Wiring Diagram
Protection Class I Devices
Special Case: Line Voltage at Test Socket (for testing PRCDs)
–
Measurement type PE(TS) - P1 (active)
– DUT mains plug to test socket
– Test probe P1 to P1 terminals
Schematic Diagram
Protective conductor resistance is measured between the earth-
ing contacts at the mains plug and the earthing contact con-
nected to the housing by contacting the housing with test probe
P1.
Single measurements,
rotary switch level: green
Switch
Po
si
ti
o
n
Measure-
ment Type
With Mains
to Test
Socket
Measure-
ment Type
Without
Mains
to Test
Socket
Measuring Functions
R
PE
Protective conductor resistance
Ip
Test current
200 mA
10 A
1
25 A
1
R
PE
Passive:
PE(TS) - P1
•
•
•
Active:
PE(TS) - P1
4
•
PE(mains) - P1
•
•
PE(mains) - P1
clamp
3
•
P1 - P2
2
•
•
•
R
PE
Содержание SECULIFE ST PRO
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