ABB M4M 20, Руководство пользователя

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M4M 20 NETWORK ANALYZER USER MANUAL
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3.6.Technical data
Auxiliary power supply
Voltage range [V] 48 to 240 VAC/VDC ±15%
Frequency [Hz] 50/60 Hz ±5%
Power consumption [VA] 10 VA max
Installation category CAT III 300V class per IEC 61010-1 edition 3
Protection fuse T1 A - 277 VAC
Measurement accuracy
Measurement type True RMS up to the 40th harmonic
128 samples per cycle, zero blind
IEC 61557-12 IEC 61557-12 PMD/S/K70/0,5
Active energy Class 0,5 acc. to IEC 61557-12
Class 0,5S acc. to IEC 62053-22
Reactive energy Class 2 acc. to IEC 61557-12
Class 2S acc. to IEC 62053-23
Active power Class 0,5 acc. to IEC 61557-12
Reactive power Class 2 acc. to IEC 61557-12
Apparent power Class 0,5 acc. to IEC 61557-12
Voltage Class 0,2 acc. to IEC 61557-12
Current Class 0,2 acc. to IEC 61557-12
Neutral current Calculated
Frequency Class 0,1 acc. to IEC 61557-12
Unbalances Class 0,2 acc. to IEC 61557-12
Harmonics, THD (Current, voltage) Class 1 acc. to IEC 61557-12
Voltage measurement inputs
Measurement range [V] 46(80)...480(830) V
Measurement category 400V~ (CAT III)
Rated frequency [Hz] 50-60 Hz
Max. VT secondary (indirect connection) [V] 400 VAC (L-N)
Max over voltage [V] 800 VAC (L-L)
Protection fuse [V] T1 A - 277 VAC
The M4M voltage inputs have a high impedance which decreases power consumption and increases
security due low current flow in the voltage input circuit. However, if the voltage input wirings are
floating, i.e. not connected to a voltage source, the wires may work as an antenna to the surroundings
electric fields which can create a perceived floating voltage. The M4M will not show this floating voltage
in case it is below 40V (below the Voltage measurement range) and in case of a three phase system
with measuring current below starting current (below current measurement range). In all other cases
of floating voltage the M4M display may show a voltage bigger than zero, which depends on installation
conditions. This behavior does not affect the reliability of the M4M in normal conditions with a connected
load.