Voltage Transducer LV 25-P
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).
I
PN
= 10 mA
V
PN
= 10 .. 500 V
Electrical data
I
PN
I
P
R
M
Primary nominal r.m.s. current
Primary current, measuring range
Measuring resistance
with ± 12 V
with ± 15 V
I
SN
K
N
V
C
I
C
V
d
@ ± 10 mA
max
@ ± 14 mA
max
@ ± 10 mA
max
@ ± 14 mA
max
10
mA
0 .. ± 14
mA
R
M min
R
M max
30
30
100
100
190
100
350
190
Ω
Ω
Ω
Ω
Features
•
Closed loop (compensated) voltage
transducer using the Hall effect
•
Insulated plastic case recognized
according to UL 94-V0.
Secondary nominal r.m.s. current
Conversion ratio
Supply voltage (± 5 %)
Current consumption
R.m.s. voltage for AC isolation test
1)
, 50 Hz, 1 mn
25
mA
2500 : 1000
± 12 .. 15
V
10
(@ ± 15 V) +
I
S
mA
2.5
kV
Principle of use
•
For voltage measurements, a current
proportional to the measured voltage
must be passed through an external
resistor
R
1
which is selected by the
user and installed in series with the
primary circuit of the transducer.
Accuracy - Dynamic performance data
X
G
Overall Accuracy @
I
PN
,
T
A
= 25°C
Linearity
Offset current @
I
P
= 0,
T
A
= 25°C
Thermal drift of
I
O
Response time
2)
@ 90 % of
V
P max
@ ± 12 .. 15 V
@ ± 15 V (± 5 %)
± 0.9
± 0.8
< 0.2
Max
± 0.15
± 0.06 ± 0.25
± 0.10 ± 0.35
40
Typ
%
%
%
mA
mA
mA
µs
Advantages
•
Excellent accuracy
•
Very good linearity
•
Low thermal drift
•
Low response time
•
High bandwidth
•
High immunity to external
interference
•
Low disturbance in common mode.
ε
L
I
O
I
O T
t
r
0°C .. + 25°C
+ 25°C .. + 70°C
General data
T
A
T
S
R
P
R
S
m
Ambient operating temperature
Ambient storage temperature
Primary coil resistance @
T
A
= 70°C
Secondary coil resistance @
T
A
= 70°C
Mass
Standards
3)
0 .. + 70
- 25 .. + 85
250
110
22
EN 50178
°C
°C
Ω
Ω
g
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.
Notes :
1)
2)
3)
Between primary and secondary
R
1
= 25 kΩ (L/R constant, produced by the resistance and inductance
of the primary circuit)
A list of corresponding tests is available
981125/14
LEM Components
Tope Co., Ltd.
Tel: (02) 8228-0658
Fax: (02) 8228-0659
http://www.sensor.com.tw
w w w .lem.com
e-mail: tope@ms1.hinet.net
LEM [ LEM ]
