35
9
Technical specifications
9.1 Basic data
Abbreviation "m.v." used in the specification of measurement uncertainty means a standard
measured value.
Voltage measurement
Range
Resolution
Measurement uncertainty
0.0 ... 299.9 V
0.1 V
(2% m.v. + 6 digits)
300...500V
1V
(2% m.v. + 2 digits)
Frequency range: 45...65Hz
Frequency measurement
Range
Resolution
Measurement uncertainty
45.0 ... 65.0 Hz
0.1Hz
(0.1% m.v. + 1 digit)
Voltage range: 50 .. 500V
Measurement of parameters of RCD
Rated operating voltage U
n
: 220V, 230V, 240V
Operating voltage range: 180…270V
Rated mains frequency f
n
: 50Hz, 60Hz
Operating frequency range: 45…65Hz
Control of correctness of PE terminal connection by means of a contact electrode
RCD trigger and response time test t
A
(for t
A
measuring mode)
Test range according to IEC 61557: 0ms ... to the upper limit of displayed value
Type
of RCD
Setting
of multiple
values
Test
range
Resolution
Basic uncertainty
10 m-
General type
and short time
delay
0.5 I
n
0..300 ms
1 ms
± 2% m.v. ±2 digits
1)
1 I
n
2 I
n
0..150 ms
5 I
n
0..40 ms
Selective
0.5 I
n
0..500 ms
1 I
n
2 I
n
0..200 ms
5 I
n
0..150 ms
1)
for I
n
= 10mA and 0.5 I
n
uncertainty is
± 2% m.v. ±3 digits
Accuracy of differential current setting:
for 1*I
n
, 2*I
n
and 5*I
n
..................................................................... 0..8%
for 0.5*I
n
....................................................................................
–8..0%
RCD tripping time may depend on: the number of RCD trippings in the previous measurements,
devices connected to the system, leakage currents in the system, etc. When results of
measurements obtained in AUTO mode raise doubts, repeat the measurements in single mode.
