Specifications

432E2280.fm/4
9 mars 2004
Power-monitoring units
Power Meter Series PM9
Functions and characteristics (cont.)
Electrical characteristics
Type of measurement On single-phase (1P + N) or three-
phase (3P, 3P + N) AC systems
Measurement accuracy Current and voltage 0.5 % of reading
Power 2 % of reading from pf 0.8 leading to 0.5
lagging
Frequency 0.2 Hz
Power factor 2 % from 0.5 leading to 0.5 lagging
Active energy IEC 61036 Class 2
Reactive energy IEC 61268 Class 2
Input-voltage
characteristics
Measured voltage 50 to 450 V AC (direct)
and up to 1000 V AC (with external VT)
Permissible overload 1.15 Un
Frequency measurement
range
45 to 65 Hz
Input-current characteristics CT ratings Adjustable from 5 to 10000 A
Secondary 5 A
Metering over-range 15 mA to 6 A
Permissible overload 6 A continuous
20 A 10 s
50 A 1 s
Load 0.55 VA
Input current Not isolated
Control Power AC 230 V AC (±10 %), < 5 VA
DC 24 to 48 V DC (±20 %)
Pulse output (PM9P) Static output, 350 V AC/DC max.,
130 mA max. at 25 °C, derating 1 mA/°C
above 25 °C, 5 kV insulation
Mechanical characteristics
Weight 0.3 kg
IP degree of protection IP52 (front display)
Dimensions 72 x 90 x 66 (mm)
Connection Tunnel terminals, 1 x 4 mm
2
Environmental conditions
Operating temperature -5 °C to +55 °C
Pollution degree 2
Installation category III for distribution systems
up to 260/450 V
Electromagnetic
compatibility
Electrostatic discharge Level III (IEC 61000-4-2)
Immunity to radiated
fields
Level III (IEC 61000-4-3)
Immunity to fast
transients
Level IV (IEC 61000-4-4)
Immunity to impulse
waves
Level IV (IEC 61000-4-5)
Conducted and radiated
emissions
Class B (CISPR11)
Safety
e
Communication
RS 485 port (PM9C)
remote reading and reset
2-wire, 9600 or 19200 bauds, Modbus
RTU, ELSV circuit, 6 kV impulse
withstand (double insulation)