Elma Instruments FITESTpro, User Manual, Page: 46 / 52

Elma RCD Test side 46
Displayed symbol RCD type (shape of the
differential current)
Initial polarity of the
differential current
AC (sine wave)
Positive half-wave
Negative half-wave
A (pulsed)
Positive half-wave
Negative half-wave
Displayed symbol RCD type RCD type
AC or A
Standard
Selective
For more details see technical data in the Chapter 5.1.
Measurement of RCD parameters
Contact voltage Uc
Displayed contact voltage is related to the nominal differential current.
For security reasons, it is multiplied by a coefficient:
RCD type Contact voltage is proportional to:
1,05
×
I
Δ
N
1,05
×
2
×
I
Δ
N
1,05
×
2
×
I
Δ
N
1,05
×
2x
2
×
I
Δ
N
•
Set Uc function by the
FUNC
key.
You can set the nominal differential current by the
I
Δ
N
key.
You can set the RCD type by the
TYPE
key.
You can set the limit contact voltage Ucmax by the
xI
Δ
N
key.
Fig. 3.8 Example of settings for contact voltage measurement