Voltage Transducer LV 25-200
For the electronic measurement of voltages : DC, AC, pulsed...,
with a galvanic isolation between the primary circuit (high voltage)
and the secondary circuit (electronic circuit).
Electrical data
V
PN
Primary nominal r.m.s. voltage
200
V
V
P
Primary voltage, measuring range
0 .. 300
V
I
PN
Primary nominal r.m.s. current
10
mA
R
M
Measuring resistance
R
M min
R
M max
with 12 V
@ 200 V
max
30
200
@ 300 V
max
30
100
with 15 V
@ 200 V
max
100
320
@ 300 V
max
100
180
I
SN
Secondary nominal r.m.s. current
25
mA
K
N
Conversion ratio
200 V / 25 mA
V
C
Supply voltage ( 5 %)
12 .. 15
V
I
C
Current consumption
10
(@ 15 V) +
I
S
mA
V
d
R.m.s. voltage for AC isolation test
1)
, 50 Hz, 1 mn
4.1
kV
Accuracy - Dynamic performance data
X
G
Overall Accuracy @ V
PN
, T
A
= 25C
0.8
%
L
Linearity
< 0.2
%
Typ
Max
I
O
Offset current @ I
P
= 0, T
A
= 25C
0.15 mA
I
OT
Thermal drift of I
O
- 25C .. + 25C
0.10 0.60 mA
+ 25C .. + 70C
0.10 0.60 mA
t
r
Response time
@ 90 % of V
P max
15
s
General data
T
A
Ambient operating temperature
- 25 .. + 70
C
T
S
Ambient storage temperature
- 40 .. + 85
C
N
Turns ratio
2500 : 1000
P
Total primary power loss
2
W
R
1
Primary resistance @ T
A
= 25C
20
k
R
S
Secondary coil resistance @ T
A
= 70C
110
m
Mass
60
g
Standards
2)
EN 50178
Notes :
1)
Between primary and secondary
2)
A list of corresponding tests is available
Features
Closed loop (compensated) voltage
transducer using the Hall effect
Transducer with insulated plastic
case recognized according to
UL 94-V0
Primary resistor R
1
and transducer
mounted on printed circuit board
128 x 60 mm.
Advantages
Excellent accuracy
Very good linearity
Low thermal drift
High immunity to external
interference.
Applications
AC variable speed drives and servo
motor drives
Static converters for DC motor drives
Battery supplied applications
Uninterruptible Power Supplies
(UPS)
Power supplies for welding
applications.
980909/2
V
PN
= 200
V
LEM Components
w w w .lem.com
Front view
Top view
Dimensions LV 25-200
(in mm. 1 mm = 0.0394 inch)
Remarks
I
S
is positive when V
P
is applied on terminal +HT.
The primary circuit of the transducer must be linked to the
connections where the voltage has to be measured.
This is a standard model. For different versions (supply
voltages, turns ratios, unidirectional measurements...),
please contact us.
Mechanical characteristics
General tolerance
0.3 mm
Fastening
4 holes
4.2 mm
Connection of primary
Faston 6.3 x 0.8 mm
Connection of secondary
Faston 6.3 x 0.8 mm
Connection
Standard 00 Year Week
or N SP..
Secondary terminals
Terminal + : supply voltage + 12 .. 15 V
Terminal M : measure
Terminal - : supply voltage - 12 .. 15 V
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
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