Basic HTML Version
5/83
Technical
Section 9
Dimensions
Section 10
Power Meter Series PM9
Functions and characteristics
Metering and
measurement
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
1 % of reading from pf 0.8 leading to 0.5
lagging
Frequency
0.2 Hz
Power factor
2 % from 0.8 leading to 0.5 lagging
Active energy
Class 1 as defined by IEC 62053-21 and IEC
61557-12
Reactive energy Class 2 as defined by IEC 62053-23 and IEC
61557-12
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
220 to 240 V AC (±10 %), < 5 VA
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
RS485 port
(PM9C)
remote reading
and reset
2-wire, 9600 or 19200 bauds, Modbus RTU,
ELSV circuit, 6 kV impulse withstand (double
insulation)
Standards compliance
IEC 61557-12
PMD/SD/K55/1
PMD/SS/K55/1