Voltage transducer DV 1000
VPN = 1000 V
For the electronic measurement of voltage: DC, AC, pulsed..., with galvanic separation
between the primary and the secondary circuit.
Features
Applications
●● Bipolar and insulated measurement up to 1500 V
●● Single or three phase inverters
●● Current output
●● Propulsion and braking choppers
●● Primary input on cables
●● Propulsion converters
●● Footprint compatible with OV, CV 4 and LV 200-AW/2 families. ●● Auxiliary converters
●● High power drives
Advantages
●● Substations
●● Low consumption and low losses
●● On-board energy meters
●● Compact design
●● Energy metering.
●● Good behavior under common mode variations
Standards
●● Excellent accuracy (offset, sensitivity, linearity)
●● Response time 60 µs
●● EN 50155: 2007
●● Low temperature drift
●● EN 50124-1: 2001
●● High immunity to external interferences.
●● EN 50121-3-2: 2006.
●● EN 50463: 2012.
Application Domain
●● Traction (fixed and onboard).
N°97.F2.60.000.0
7August2013/Version 4
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DV 1000
Absolute maximum ratings
Parameter
Symbol
Value
Maximum supply voltage (VP = 0, 0.1 s)
±UC
±34 V
Maximum supply voltage (working) (-40 .. 85 °C)
±UC
±26.4 V
Maximum input voltage (-40 .. 85 °C)
VP
1.5 kV
Maximum steady state input voltage (-40 .. 85 °C)
VPN
1000 V see derating
on figure 2
Absolute maximum ratings apply at 25 °C unless otherwise noted.
Stresses above these ratings may cause permanent damage. Exposure to absolute maximum ratings for extended periods may
degrade reliability.
Insulation coordination
Parameter
Symbol
Unit
Value
Comment
RMS voltage for AC insulation test 50/60Hz/1 min
Ud
kV
18.5
100 % tested in production
Impulse withstand voltage 1.2/50 µs
ÛW
kV
30
Partial discharge extinction rms voltage @ 10 pC
Ue
V
5000
Insulation resistance
RIS
MΩ
200
Clearance (pri. - sec.)
dCI
mm
Creepage distance (pri. - sec.)
dCp
mm
see
dimensions
drawing on
page 8
-
-
V0 according
to UL 94
CTI
V
600
Symbol
Unit
Min
Ambient operating temperature
TA
°C
- 40
85
Ambient storage temperature
TS
°C
- 50
90
Mass
m
g
Case material
Comparative tracking index
measured at 500 V DC
Shortest distance through
air
Shortest path along device
body
Environmental and mechanical characteristics
Parameter
Parameter
Class accuracy for a rated primary voltage
VPN = 750 V
Typ
Max
750
Accuracy class
Comment
0.5 R
According to EN 50463-2
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DV 1000
Electrical data DV 1000
At TA = 25 °C, UC = ±24 V , RM = 100 Ω, unless otherwise noted.
Lines with a * in the conditions column apply over the -40 .. 85 °C ambient temperature range.
Parameter
Max
Conditions
Unit
Primary nominal rms voltage
VPN
V
Primary voltage, measuring range
VPM
V
-1500
1500
*
Measuring resistance
RM
Ω
0
133.3
* See derating on figure 2.
For │VPM│< 1500 V, max
value of RM is given
on figure 1
Secondary nominal rms current
ISN
mA
Output range
IS
mA
-75
±UC
V
±13.5
Supply voltage
Supply rise time (10-90%)
Min
Typ
Symbol
1000
*
50
±24
ms
*
75
*
±26.4
*
100
Current consumption @ UC = ±24 V
IC
mA
20 + IS
25 + IS
Offset current
IO
µA
-50
0
50
100% tested in production
Offset drift
IOT
µA
-250
200
250
-40 .. 85 °C,100% tested in
production
Sensitivity
G
µA/V
Sensitivity error
εG
%
-0.2
Thermal drift of sensitivity
εGT
%
-0.5
-0.8
-0.8
0.5
0.8
0.8
-25 .. 70 °C
-25 .. 85 °C
* -40 .. 85 °C
Linearity error
εL
%
-0.1
0.1
* ± 1500 V range
-0.3
0.3
-1
-1.4
-1.4
1
1.4
1.4
25°C; 100% tested in
production
-25 .. 70 °C
-25 .. 85 °C
* -40 .. 85 °C
50
0
Overall accuracy
XG
% of VPN
Output rms current noise
Ino
µA
17
Reaction time @ 10 % of VPN
tra
µs
21
Response time @ 90 % of VPN
tr
µs
48
BW
kHz
12
6.5
1.6
ms
190
Frequency bandwidth
Start-up time
50 mA for 1000 V
0.2
1 Hz to 100 kHz
60
0 to 1000 V step, 6 kV/µs
3 dB
1 dB
0.1 dB
250
*
Primary resistance
R1
MΩ
23
*
Total primary power loss @ VPN
P
W
0.045
*
Definition of typical, minimum and maximum values
Minimum and maximum values for specified limiting and safety conditions have to be understood as such as well as
values shown in “typical” graphs. On the other hand, measured values are part of a statistical distribution that can
be specified by an interval with upper and lower limits and a probability for measured values to lie within this interval.
Unless otherwise stated (e.g. “100 % tested”), the LEM definition for such intervals designated with “min” and “max” is that the
probability for values of samples to lie in this interval is 99.73 %. For a normal (Gaussian) distribution, this corresponds to an
interval between -3 sigma and +3 sigma. If “typical” values are not obviously mean or average values, those values are defined to
delimit intervals with a probability of 68.27 %, corresponding to an interval between -sigma and +sigma for a normal distribution.
Typical, maximal and minimal values are determined during the initial characterization of a product.
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DV 1000
500
400
300
200
TA = -40 .. 85 °C
UC = ±13.5 to ±26.4 V
100
0
0
500
1000
1500
2000
Minimum measuring resistance
(Ohm)
Maximum measuring resistance
(Ohm)
Typical performance characteristics
100
90
80
70
60
50
40
30
20
10
0
Uc = ±24 V
Uc = ±15 V
TA = -40 .. 85 °C
0
500
1000
Nominal input voltage (V)
Measuring range (V)
400
200
100
0
-100
-200
-300
1.00
0.60
0.20
-0.20
-0.60
-1.00
-1.40
-400
-50
-25
0
25
50
75
100
Ambient temperature (°C)
0.8
0.4
0.2
-25
0
25
50
75
100
Figure 4: Overall accuracy in temperature
Max
Typical
Min
0.6
-50
Ambient temperature (°C)
Figure 3: Electrical offset thermal drift Sensitivity drift (%)
Max
Typical
Min
1.40
Max
Typical
Min
300
Overall accuracy (%)
Electrical offset drift (uA)
Figure 1: Maximum measuring resistance
Figure 2: Minimum measuring resistance
For TA under 80°C, the minimum measuring
resistance is 0 Ω whatever UC
Input VP: 200 V/div
Output IS: 10 mA/div
Timebase: 20 µs/div
0.0
-0.2
-0.4
-0.6
-0.8
-50
-25
0
25
50
75
100
Ambient temperature (°C)
Figure 5: Sensitivity thermal drift
Figure 6: Typical step response (0 to 1000 V)
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DV 1000
40
35
35
30
Typical supply current (mA)
Typical supply current (mA)
Typical performance characteristics continued
30
25
20
15
10
TA = 25 °C, VP = 0
5
0
0
5
10
15
20
25
30
25
20
15
Uc = 15 V
10
Uc = 24 V
5
0
-50
Supply voltage (± V)
0
25
50
75
100
Ambient temperature (°C)
Frequency response
Figure 7: Supply current function
of supply voltage
Frequency
response
Figure 8 Supply current
function
of temperature
Device: DV4200/SP4, R = 50 ohm
Device: DV4200/SP4, RM = 50 ohm
5
-25
M
150
0
100
Phase (deg)
Gain (dB)
-5
-10
-15
-20
0.1
-150
10
10
Frequency (Hz)
10
MSr 08-Jul-2008 10:11:08
Frequency response
Device: DV4200/SP4, RM = 50 ohm
1
5
10
10
Figure 9: Typical frequency response
0
2
3
10
4
10
Frequency (Hz)
10
5
10
Frequency response
Device: DV4200/SP4, RM = 50 ohm
-10
-0.1
-20
-0.2
-30
Phase (deg)
-0.3
Gain (dB)
-50
MSr 08-Jul-2008 10:11:08
4
3
2
0
-0.4
-0.5
-0.6
-40
-50
-60
-0.7
-70
-0.8
-80
-0.9
-1
1
10
0
-100
-25
-30
1
10
50
MSr 08-Jul-2008 10:11:08
2
10
3
Frequency (Hz)
10
4
10
-90
1
10
MSr 08-Jul-2008 10:11:08
2
10
3
Frequency (Hz)
10
4
10
Figure 10: Typical frequency response (detail)
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DV 1000
Typical performance characteristics continued
Input VP: 420 V/div
Output IS: 500 µA/div
Timebase: 20 µs/div
Input VP: 420 V/div
Output IS: 500 µA/div
Timebase: 2 µs/div
Figure 11: Typical common mode perturbation
Figure 12: Detail RMS
of typical
common
mode perturbation
noise current
at IM
Noise power density spectrum of V(RM)
fc is upper
cut off frequency
bandpass,
low cut off freq
(1000
V step with 6 kV/µs RM = 100 Ω) (1000
V stepof with
6 kV/µs,
RMis =1 Hz100 Ω)
Device: DV1200/SP2, RM = 50 ohm
-90
Device: DV1200/SP2
-4
10
-100
-5
10
I (A)
v (dBVrms/rtHz)
-110
n
n
-120
-6
10
-130
-140
-7
-150
0
10
1
10
2
10
3
f (Hz)
4
10
10
5
10
10
0
10
1
2
10
10
3
4
10
fc (Hz)
10
5
10
Linearity error (% of 1.5 kV)
Figure 14: Typical total output current noise (rms)
Figure 13: Typical noise power density of V (RM)
with RM = 50 Ω
with RM = 50 Ω
(fc is upper cut-off frequency of bandpass,
low cut off frequency is 1 Hz)
Figure 13: (noise power density) shows that there are no
significant discrete frequencies in the output.
Figure 14 confirms the absence of steps in the total output
current noise that would indicate discrete frequencies.
To calculate the noise in a frequency band f1 to f2, the formula
is:
0.03%
0.02%
0.01%
0.00%
Ino(f1 to f2) = Ino(f2) − Ino(f1)
2
2
-0.01%
with In(f) read from figure 14 (typical, rms value).
-0.02%
Example:
What is the noise from 10 to 100 Hz?
Figure 14 gives In(10 Hz) = 0.3 µA and In(100 Hz) = 1 µA.
The output current noise (rms) is therefore.
-0.03%
-1500 -1000 -500
0
500
Primary voltage (V)
1000 1500
(1 ⋅10 ) − (0.3 ⋅10 ) = 0.95 µA
−6
2
− 6)
2
Figure 15: Typical linearity error
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DV 1000
Performance parameters definition
The schematic used to measure all electrical parameters are:
+UC
+
+HV
VP
M
IS
RM
error =
0V
-
-UC
Isolation
barrier
Figure 16: standard characterization schematics for
current output transducers (RM = 50 Ω unless otherwise noted)
+UC
+
+HV
C
VP
2
To measure sensitivity and linearity, the primary voltage (DC) is
cycled from 0 to VPM, then to -VPM and back to 0 (equally spaced
VPM/10 steps).
The sensitivity G is defined as the slope of the linear
regression line for a cycle between ± VPM.
The linearity error εL is the maximum positive or negative
difference between the measured points and the linear
regression line, expressed in % of the maximum measured
value.
Magnetic offset
M
0V
-HV
VS
0V
C C
-U
Isolation
barrier
Figure 17: standard characterization schematics for voltage
output transducers (RM = 100 kΩ unless
otherwise noted)
For all the following explanations, the output currents IS, IO,
IOT, etc. should be replaced by voltages for transducers with
voltage output: VS, VO, VOT etc.
Transducer simplified model
The static model of the transducer at temperature TA is:
∑ (error _ component)
Sensitivity and linearity
-HV
This
is
the
absolute
maximum
error.
As
all
errors are independent, a more realistic way to
calculate the error would be to use the following formula:
IS = G VP + error
In which
error = IOE + IOT (TA) + εG G VP + εGT (TA) G VP + εL G VPM
:secondary current (A)
IS
G
:sensitivity of the transducer (A/V)
VP
:primary voltage (V)
VPM
:primary voltage, measuring range (V)
TA
:ambient operating temperature (°C)
IOE
:electrical offset current (A)
IOT(TA) :temperature variation of IO at
temperature TA (A)
:sensitivity error at 25°C
εG
εGT (TA) :thermal drift of sensitivity at
temperature TA
εL
:linearity error
Due to its working principle, this type of transducer has no
magnetic offset current IOM.
Electrical offset
The electrical offset current IOE is the residual output current
when the input voltage is zero.
The temperature variation IOT of the electrical offset current
IOE is the variation of the electrical offset from 25°C to the
considered temperature.
Overall accuracy
The overall accuracy XG is the error at ± VPN, relative to the
rated value VPN.
It includes all errors mentionned above.
Response and reaction times
The response time tr and the reaction time tra are shown in the
next figure.
Both depend on the primary voltage dv/dt. They are measured
at nominal voltage.
I
100 %
90 %
IS
Vp
tr
10 %
tra
t
Figure 18: response time tr and reaction time tra
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DV 1000
Dimensions DV 1000 (in mm)
Connection
Safety
Mechanical characteristics
●● General tolerance
●● Transducer fastening
Recommended fastening torque
●● Connection of primary
Connection of secondary
●● Earth connection
Recommended fastening torque
± 1 mm
4 M6 steel screws
4 washers ext. ⌀ 18 mm
5 N·m
2 x 1.5 mm2 cables
3 x 0.5 mm2 shielded cable
M5 threaded stud
2.2 N·m
Caution, risk of electrical shock
Remarks
IS is positive when a positive voltage is applied on +HV.
The transducer is directly connected to the primary voltage.
The primary cables have to be routed together all the way.
The secondary cables also have to be routed together all the
way.
●● Installation of the transducer is to be done without primary or
secondary voltage present.
●●
●●
●●
●●
This transducer must be used in electric/electronic equipment
with respect to applicable standards and safety requirements
in accordance with the manufacturer’s operating instructions.
When operating the transducer, certain parts of the module
can carry hazardous voltage (eg. primary busbar, power
supply). Ignoring this warning can lead to injury and/
or cause serious damage. This transducer is a build-in
device, whose conducting parts must be inaccessible after
installation. A protective housing or additional shield could
be used. Main supply must be able to be disconnected.
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