Commissioning; Technical Data - OHIO SEMITRONICS DMT-1000 Mode D'emploi

7. Commissioning

Prior to starting, check that the connection
data of the transducer agrees with the system
data (see type label).
The power supply to the transducer can then be switched
on and the signals applied to the measuring inputs.
Label Identification:
1 Input voltage
2 Input current
3 Nominal frequency
4 Power supply
5 Baud Rate

7.1 Technical data

Symbols
Symbols Meaning
X Measured variable
X0 Lower limit of the measured variable
X1 Break point of the measured variable
X2 Upper limit of the measured variable
Y Output variable
Y0 Lower limit of the output variable
Y1 Break point of the output variable
Y2 Upper limit of the output variable
V Input voltage
Vr Rated value of the input voltage
V12 Phase-to-phase voltage L1 – L2
V23 Phase-to-phase voltage L2 – L3
V31 Phase-to-phase voltage L3 – L1
V1N Phase-to-neutral voltage L1 – N
V2N Phase-to-neutral voltage L2 – N
V3N Phase-to-neutral voltage L3 – N
VM Average value of the voltages
(V1N + V2N + V3N) / 3
I Input current
I1 AC current L1
I2 AC current L2
I3 AC current L3
Ir Rated value of the input current
IM Average value of the currents
(I1 + I2 + I3) / 3
IMS Average value of the currents and sign
of the active power (P)
IB RMS value of the current with wire setting
range (bimetal measuring function)
IBT Response time for IB
Ohio Semitronics, Inc.
8
7004-00090-A Rev 2/00
6 Model Number
7 Test and Conformity marks
8 Input Terminals
9 Output Terminals
10 Output Values
Page 8 of 24
7
DMT-1000
6
Multifunction Transducer
1
Volts
2 11
4
15 16 17 18 19 20 21 22 23 24 25 26
M : M :
1 2
M : M :
3 4
10
I V I I V I
1+ 1 1 2+ 2
1 2 3 4 5 6 7
Fig. 9. Declaration to type label.
Symbols Meaning
BS Slave pointer function for the measurement of
the RMS value IB
BST Response time for BS
ϕ
Phase-shift between current and voltage
F Frequency of the input variable
Fn Rated frequency
P Active power of the system
P = P1 + P2 + P3
P1 Active power phase 1
(phase-to-neutral L1 – N)
P2 Active power phase 2
(phase-to-neutral L2 – N)
P3 Active power phase 3
(phase-to-neutral L3 – N)
Q Reactive power of the system
Q = Q1 + Q2 + Q3
Q1 Reactive power phase 1
(phase-to-neutral L1 – N)
Q2 Reactive power phase 2
(phase-to-neutral L2 – N)
Q3 Reactive power phase 3
(phase-to-neutral L3 – N)
S Apparent power of the system
S = ⎟ I
2 2
+ I + I
1 2
S1 Apparent power phase 1
(phase-to-neutral L1 – N)
S2 Apparent power phase 2
(phase-to-neutral L2 – N)
S3 Apparent power phase 3
(phase-to-neutral L3 – N)
Sr Rated value of the apparent power of the
system
PF Active power factor cosϕ = P/S
Ohio Semitronics, Inc.
4242 Reynolds Dr.
Hilliard, Ohio USA
2
3
5
Amperes Baud
Freq.
Aux. Power
85 - 230Vac/dc 50/60Hz 9W
9
+ -
GND
Tx/Rx
CT Ratio
PT Ratio
System
Aux.
Power
I V I N + -
2 3+ 3 3
8 9 11 13 14
8
· ⎟ V
2 2 2 2
+ V + V
3 1 2 3