User Manual

GMC-I Messtechnik GmbH 25
Wiring Diagram
Set Measuring Range at Current Clamp Sensor and Parameter at
the SECUTEST PRO
This measurement type can only be selected if test current is set
to 10 A AC.
* only with WZ12C
2-Pole Measurement at Permanently Installed DUTs
(only with SECUTEST PRO or feature H01)
– Measurement type P1 - P2
– Test probe P1 to P1 terminals
– Test probe P2 to P2 terminals
Schematic Diagram
PE at the mains connection is contacted with the second test
probe instead of via the test instrument’s mains plug.
Wiring Diagram
Resistance is measured:
• Between each exposed conductive part of the housing and the
earthing contacts at the mains and the device plug (if a
removable mains connector cable is used), or the protective
conductor terminal for permanently installed devices.
• As 4-pole measurement
• Between the earthing contacts at the mains plug and the
earthing contacts at the device plug for device connector cables
• Between the earthing contacts at the mains plug and the
earthing contacts at the coupling socket for extension cords
Setting Measuring Parameters for RPE
1
SECUTEST BASE10/PRO (feature G01): Measurement cannot be performed
with 10 A AC for this measurement type.
2
SECUTEST BASE10/PRO (feature G01):
This measurement type can only be selected with a selected test current
of 10 A AC.
Entering and Deleting Offset Values
The test instrument determines protective conductor resistance
by means of a 4-pole measurement. If measurement cables or
extension cords are used whose ohmic resistance should be
automatically subtracted from the measurement results, there are
two ways to save the respective offset value in the R
PE
switch
position:
• Entry via the numeric keypad
• Acceptance of the momentary measured value by pressing
the
SET OFFSET softkey
Proceed as follows in order to accept the measured value:
➭ Start the measurement and wait until the measured value settles in.
➭ Press the SET OFFSET key. The value is transferred to the offset field.
The entered or accepted offset value is permanently stored and is
subtracted from all protective conductor resistance values mea-
sured in the future. This applies to single measurements as well
as to measurements conducted in the AUTO switch positions.
The symbol is displayed in the header in all switch positions
until the offset value is deleted by pressing the CLEAR OFFSET soft-
key (R
PE
switch position).
SECUTEST PRO Current Clamp Sensor SECUTEST PRO
Transformer
Ratio
Parameter
Trans-
former
Ratio
( Switch*)
Measuring
Range
Display Range
with Clamp
1:1 WZ12C
1 V / A 1 mV / mA 1 mA... 15 A 0 mA ... 300 A
100:1 SECUTEST CLIP
1 V / 10 mA
100 mV/mA 0.1...25 mA 0 mA ... 300 A
Measuring
Parameter
Meaning
Measurement Type,
Suitable for
DUT Connection via
(passive:) PE(TS)
– P1
Testing is conducted between the
two protective conductor terminals:
at the test socket and test probe
P1.
Test socket, EL1 with DUT at test
socket, VL2E, AT3 adapter (AT3-
IIIE, AT3-I IS, AT3-IIS32),
AT16DI/AT32DI
Active: PE(TS) –
P1
1
Same as PE(TS) – P1, but with
line voltage to the test socket,
200 mA AC flow immediately.
A ramp-like, slowly rising DC test
current flows (PRCD triggering is
avoided) at +200 mA DC, –
200 mA DC and ±200 mA DC.
Test socket (for PRCDs)
PE(mains) – P1
permanently con-
nected DUTs
Testing is conducted between the
ground terminal at the mains and
test probe P1.
Permanent connection
P1 – P2
SECUTEST PRO or feature H01:
2-pole measurement between
test probes 1 and 2 (see section
6.6)
Permanent connection
Clamp
2
SECUTEST PRO
or feature G01 and
I01:
Test current measurement with
current clamp sensor
Permanent connection
IP(set)
+200 mA DC Test current: positive direct current
-200 mA DC Test current: negative direct current
±200 mA (DC) Test current: direct current whose polarity is reversed every 2 secs.
200 mA (AC) Test current: alternating current
10 A (AC)
10 A test current: SECUTEST BASE10 or PRO only (feature G01)
f – only at 200 mA (AC)
50 ... 200 Hz Test frequency
Offset
> 0 to < 2 Ω Zero balancing for a selected reference point.
Clamp factor – only with measuring type „Clamp“
1:1 Transformer ratio of the current clamp sensor WZ12C.
For setting the current clamp factor at the WZ12C clamp and the
SECUTEST PRO (see table above).
100:1 Transformer ratio of the current clamp sensor SECUTEST CLIP.
For setting the current clamp factor at the SECUTEST PRO.