Datasheet

Data Sheet
679.D.141.02
Digital Multifunctional
Power Meter
with LCD Display and
Optional Modules
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
Auxiliary Supply
auxiliary voltage 85 ... 265 V AC (45 ... 65 Hz) / 85 ... 265 V DC
power consumption <10 VA
Environmental
operating temperature –10 ... +55°C
range
storage temperature –40 ... +70°C
range
relative humidity 5% ... 95% non-condensing
Status Inputs
WPM 770 is equipped with three status inputs which can be used, e.g. for
recording switch positions. The status inputs must be connected by
switch contacts and an external supply of 80 ... 265 V AC.
Relay Outputs
WPM 770 is equipped with two relay outputs for setpoints.
switching capacity 250 V AC, 5 A / 30 V DC, 5 A
setpoints upper and lower setpoint adjustable 0 ... 120%
delay on - delay and off-delay adjustable 0 ... 99 s
measuring unit selectable from 28 measuring units
RS485 Interface
WPM 770 is equipped with one RS485 interface.
protocol MODBUS–RTU
baud rate 2400, 4800, 9600, 19200
address 1 ... 247
Beispiel
WPM 770
WPM 770
WPM 770
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
Optional Modules
WPM770–EP 2 pulse outputs
for active energy and for reactive energy
(maximum 1 module per device)
type optocoupler open–collector, max. 50 V, 50 mA
pulse weight depending on VT ratio and CT ratio:
pulse count each kWh or kvarh =
= (1/pulse constant x PT x CT)
pulse constant 1000 ... 9999 programmable
pulse width 60 ... 100 ms programmable
WPM770–BA BACnet interface
(on request) (maximum 1 module per device)
netzwork configuration via buttons and meter display
netzwork mode BACnet MS/TP or P1 FLN selectable
measured values 142 register available via network
WPM770–S 4 additional status inputs
(maximum 2 modules per device)
WPM770–R 2 additional relay outputs
(maximum 1 module per device)
WPM770–M memory extension 8 MB
WPM770–AO 2 analogue outputs
(on request) (maximum 1 module per device)
type 4 ... 20 mA
measuring unit selectable from 13 measuring units
scaling adjustable 1.0 ... 10.0