MZC-304
– USER MANUAL
31
Display range:
Display range
Resolution
Measurement uncertainty
0.00...19.99
0,01
(5% m.v. + 3 digits)
20.0...199.9
0,1
(5% m.v. + 3 digits)
200...1999
1
(5% m.v. + 3 digits)
Rated operating voltage U
nL-N
/ U
nL-L
: 220/380V, 230/400V, 240/415V
Operating vol
tage range: 180…270V (for Z
L-PE
i Z
L-N
) and 180…460V (for Z
L-L
)
Rated mains frequency f
n
: 50Hz, 60Hz
Operating frequency range: 45…65Hz
Maximum test current: 7.6 A for 230 (3x10ms), 13.3 A for 400V (3x10ms)
Control of correctness of PE terminal connection by means of a contact electrode (applicable to
Z
L-PE
)
Fault loop resistance R
S
and fault loop reactance X
S
Display range
Resolution
Measurement uncertainty
0.00..19.99
0.01
(5% + 5 digits) of Z
S
value
20.0..199.9
0.1
(5% + 5 digits) of Z
S
value
Calculated and displayed for ZS<20
Short-circuit current I
K
Test range according to IEC 61557 can be calculated on the basis of test ranges Z
S
and rated voltag-
es.
Display range
Resolution
Measurement uncertainty
0.110
…1.999A
0.001 A
Calculated on the basis of
uncertainty for fault loop
2.00...19.99A
0.01 A
20.0...199.9A
0.1 A
200...1999A
1 A
2.00...19.99kA
0.01 kA
20.
0…40.0kA
0.1 kA
Prospective fault current calculated and displayed by the meter may slightly differ from the val-
ue calculated by the user with a calculator, basing on the displayed value of the impedance,
because the meter calculates the current from unrounded value of fault loop impedance (which
is used for displaying). As the correct value, consider I
k
current value, displayed by the meter or
by firmware.
Measurement of fault loop impedance Z
L-PE
RCD (without RCD tripping)
Measurement of fault loop impedance Z
S
Measuring range acc. to I
EC 61557: 0,5…1999
for 1.2m leads, WS01 i WS05 and 0.51...1999
for
5m, 10m and 20m leads
Display range
Resolution
Measurement uncertainty
0.00...19.99
0,01
(6% m.v. + 10 digits)
20.0...199.9
0,1
(6% m.v. + 5 digits)
200...1999
1
(6% m.v. + 5 digits)
It will not trip RCD's of I
Δn
≥ 30 mA
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
