Datasheet

Data Sheet
679.D.121.04
Digital Multifunctional
Power Meter
with LCD Display
4 Quadrants Measurement
0
0
+1
-1
capacitive
motor/
import
inductive
motor/
import
capacitive
generator/
export
inductive
generator/
export
Reactive energy
0°
+90°
-90°
Active energy
ϕ
±180°
cos ϕ
Q1Q2
Q3 Q4
Environmental
operating temperature –20 ... +60°C
range
storage temperature –30 ... +70°C
range
relative humidity 5% ... 95% non-condensing
Status Inputs
WPM 735 E is equipped with 8 status inputs which can be used, e.g. for
recording switch positions.
internal supply
30 V DC
Pulse Outputs
WPM 735 E is equipped with two pulse outputs:
D Output P1 provides pulses for total active energy.
D Output P2 provides pulses for total reactive energy.
supply+
to receptor
supply –
WPM 735 E
external devices
type optocoupler open–collector, max. 50 V, 50 mA
pulse weight adjustable 1000 ... 5000,
depending on CT ratio,
i.e. with 1 kWh/kvarh X CT
the set pulse count will be output
pulse width max. 200 ms
Analog Output
WPM 735 E is equipped with one analog output, to which a measured
rating can be assigned.
type 4 ... 20 mA
burdan range 0 ... 500 W
scale factor 1 ... 10 adjustable
RS485 Interface
type RS485
protocol MODBUS–RTU
baud rate 2400, 4800, 9600, 19200
address 1 ... 247
example
WPM 735
WPM 735
WPM 735
Standards
EN 55022 Information technology equipment –
Radio disturbance characteristics –
Limits and methods of measurement
EN 55024 Information technology equipment –
Immunity characteristics –
Limits and methods of measurement
EN 60950–1 Information technology equipment – Safety –
Part 1: General requirements
EN 61000–3 Electromagnetic compatibility (EMC) – Limits –
–2 Part 3–2: Limits for harmonic current emissions
(equipment input current <= 16 A per phase)
–3 Part 3–3: Limitation of voltage changes,
voltage fluctuations and flicker in public
low–voltage supply systems, for equipment
with rated current <= 16 A per phase and
not subject to conditional connection
IEC 61000–4 Electromagnetic compatibility (EMC) –
Testing and measurement techniques –
–2 Part 4–2: Electrostatic discharge
immunity test.
–3 Part 4–3: Radiated, radio–frequency,
electromagnetic field immunity test
–4 Part 4–4: Electrical fast transient/burst
immunity test
–5 Part 4–5: Surge immunity test
–6 Part 4–6: Immunity to conducted disturbances,
induced by radio–frequency fields
–8 Part 4–8: Power frequency magnetic field
immunity test
–11 Part 4–11: Voltage dips, short interruptions
and voltage variations immunity tests