Gossen MetraWatt SINEAX DME 440 Mode D'emploi page 35

Symbols Meaning
PF Active power factor cosϕ = P/S
PF1 Active power factor phase 1
PF2 Active power factor phase 2
PF3 Active power factor phase 3
Reactive power factor sin ϕ = Q/S
QF
QF1 Reactive power factor phase 1
QF2 Reactive power factor phase 2
QF3 Reactive power factor phase 3
LF Power factor of the system
LF = sgnQ · (1 – PF)
LF1 Power factor phase 1
sgnQ1 · (1 – PF1)
LF2 Power factor phase 2
sgnQ2 · (1 – PF2)
LF3 Power factor phase 3
sgnQ3 · (1 – PF3)
c Factor for the intrinsic error
R Output load
Rn Rated burden
H Power supply
Hn Rated value of the power supply
CT c.t. ratio
VT v.t. ratio
®
MODBUS (Bus interface RS-485)
Terminals: Screw terminals, terminals 23, 24,
25 and 26
Connecting cable: Screened twisted pairs
Max. distance: Approx. 1200 m (approx. 4000 ft.)
Baudrate: 1200 ... 9600 Bd (programmable)
Number of bus station: 32 (including master)
Dummy load: Not required
+ – GND
23 24 25
MODBUS ® is a registered trademark of Schneider Automation Inc.
Input
Waveform: Sinusoïdal
Rated frequency: Acc. to type label
50, 60 or 16 2/3 Hz
Own consumption [VA]
(with external
power supply): Voltage circuit: U
Current circuit: ≤ I
P1/S1
P2/S2
P3/S3
Q1/S1
Q2/S2
Q3/S3
26
2
/ 400 kΩ
· 0,01 Ω
2
Continuous thermal ratings of inputs
Current circuit 10 A 400 V
Voltage circuit 480 V single-phase AC system
831 V three-phase system
Short-time thermal rating of inputs
Input Number
variable of
inputs
Current circuit 400 V single-phase AC system
693 V three-phase system
100 A 5
250 A 1
Voltage circuit 1 A, 2 A, 5 A
Single-phase
AC system
600 V
H : 1.5 Ur 10
intern
Three-phase
system
1040 V
H : 1.5 Ur 10
intern
Analogue outputs
For the outputs A, B, C and D:
Output Impressed
variable Y DC current
Full scale Y2 see "Ordering
information"
Limits of output
signal for input
overload
and/or R = 0 1.25 · Y2
R → ∞
30 V
Rated useful
7.5 V
0 ≤
range of output
Y2
load
AC component
≤ 0.005 · Y2
of output signal
(peak-to-peak)
The outputs A, B, C and D may be either short or open-
circuited. They are electrically insulated from each other and
from all other circuits (floating).
single-phase AC system
693 V
three-phase system
Duration Interval
of between two
overload overloads
3 s 5 min.
1 s 1 hour
10 s 10 s
10 s 10 s
Impressed
DC voltage
see "Ordering
information"
40 mA
1.25 Y2
Y2 Y2
15 V
≤ ≤ ≤ ∞
2 mA 1 mA
Y2
≤ 0.005 · Y2
35