Specifications
432E2150.fm/3
30 mars 2004
Power-monitoring units
Power Meter PM500
Functions and characteristics (cont.)
E88968
PM500
For LV and HV distribution systems b
Current and voltage accuracy 0.5 %
Energy and power accuracy (IEC 61036) 1 %
True rms measurements up to 31st harmonic
Maximum number of snap-in modules 4
Display Back lit LCD
Direct voltage connection 480 V
Instantaneous rms values
Current Phases and neutral b
Voltage Ph-Ph and Ph-N b
Frequency b
Active, reactive, apparent power Total and per phase b
Power factor Total and per phase b
Energy values
Active, reactive, apparent energy 4 quadrants b
1 Display instantaneous and demand currents.
2 Display voltages and frequency.
3 Display instantaneous and demand power.
4 Display power factor and total harmonic distortion of current
and voltage.
5 Display maximum demand current and power values.
6 Display energy values and operating times.
7 Back lit LCD display.
Demand values
Current Present and max. values b
Active, reactive, apparent power Present and max. values b
Setting of calculation window 5, 8, 10, 15, 20, 30, 60 mn b
Synchronisation of the measurement IO11 option
Power quality measurements
Harmonic distortion Current and voltage b
E88969
PM500 options
The PM500 can be fitted with a maximum of 1 optional module of each type.
Modbus RS 485 module
Modbus RTU 2-wire RS 485 port, up to 38400 bauds
Remote readings, settings and reset
b
IO11 Puls module
Synchro
(1)
or digital input 1
Pulsed output for energy metering 1
IO22 Alarm module
Alarms for I, U, V, F, PF total, P total, Q total, S total, THD
Adjustable high and low thresholds, hysteresis and delay
b
Min/Max of instantaneous values on Modbus COM:
I, U, THD I, THD U (the calculated value is the min. or max. of the
3 phases), IN, THD IN, F, PF total, P total, Q total
b
Digital inputs for position monitoring or pulse counting 2
Relay outputs for control or alarm functions 2
AO20 4-20 mA module
0/4-20 mA analogue outputs assignable to I, IN, U, V, F, PF total,
P total, Q total, S total
2
IO02 2 Puls module
Pulsed output for energy metering 2
(1) To synchronise the demand current and demand power calculation window.