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Les langues disponibles
Symbols
Meaning
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
Own consumption
(with external
power supply):
Voltage circuit: - V
Current circuit: 0.3 VA · I/5 A
Ohio Semitronics, Inc.
7004-00090-A Rev 2/00
P1/S1
P2/S2
P3/S3
Q1/S1
Q2/S2
Q3/S3
26
2
/ 400 kΩ
Page 9 of 24
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 Vr
10
intern
Three-phase
system
1000 V
H
: 1.5 Vr
10
intern
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
9
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