Mega MEg40+, Руководство пользователя

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Měřící Energetické Aparáty
4
2/ tEchnical ParaMEtErs
Reference conditions: U
supply
= 230 V / 50,0 Hz
ambient temperature = 20 °C, relative humidity = 40 % to 70 %.
Measured voltages and currents have a frequency identical with U
supply
and make
a three-phase system.
Measured
quantity
Rated value
Range of
measurement
Accuracy
[% of range]
Note
TRMS voltage
U
nom
= 230 V 0 V to 290 V 0.2 % ± 1 digit
1), 2)
U
nom
= 57.73 V 0 V to 125 V 0.2 % ± 1 digit
TRMS current
I
nom
= 1 A 0 A to 1.2 A 0.2 % ± 1 digit 1), 2),
3)
I
nom
= 5 A 0 A to 6 A 0.2 % ± 1 digit
Power factor PF
U > 0.8 U
nom
I > 0.1 I
nom
PF > 0.1 0.5 % ± 1 digit 4)
Active power 230 V / 5 A, 1 A PF > 0.4 0.5 % ± 1 digit 4)
Reactive power 230 V / 5 A, 1 A PF < 0.6 0.5 % ± 1 digit 4)
Active energy 230 V / 5 A
U ≥ 0.8 U
nom
I > 0
Cos
ϕ
L > 0.5
Cos
ϕ
C > 0.8
Class B
according to
TPM 2440-08
ČMI
Voltage events U
nom
0.05 U
jm
to 1.20 U
nom
T ≤ 1 sec
1.0 % U
nom
20 msec
5), 6)
Notes:
1) Only the range is to be specified in the order.
2) The rated value of the primary quantity is to be entered using PC or from the
keyboard.
3) Only indirect current measurement through measuring current transformers. In
LV and MV networks, special measuring current split core transformers PTD with
the rated currents 100 A, 200 A, 300 A, 400 A, 500 A, 600 A and 900 A can be used.
4) It measures in 4 quadrants.
5) It evaluates events according to the voltage U
rms1/2
specified in ČSN
EN 61000-4-30, ed. 2 with characteristics in ČSN EN 50160, ed. 3, i.e. with the
residual voltage and event duration.
6) With an external uninterruptible power supply unit, e. g. MEg102, it can measure
longer voltage events.