Voltage Transducer LV 25-P
IPN = 10 mA
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).
VPN = 10 .. 500 V
Electrical data
I PN
IP
RM
Primary nominal r.m.s. current
Primary current, measuring range
Measuring resistance
10
0 .. ± 14
RM min
mA
mA
Features
RM max
· Closed loop (compensated) voltage
transducer using the Hall effect
· Insulated plastic case recognized
according to UL 94-V0.
with ± 12 V
@ ± 10 mA max
30
30
100
100
190
100
350
190
W
W
W
W
@ ± 14 mA max
@ ± 10 mA max
@ ± 14 mA max
with ± 15 V
Principle of use
ISN
KN
VC
IC
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
10 (@± 15 V)+ IS mA
· 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.
V
Vd
2.5
kV
Accuracy - Dynamic performance data
XG
Overall Accuracy @ IPN , TA = 25°C @ ± 12 .. 15 V
± 0.9
± 0.8
< 0.2
%
%
%
Advantages
@ ± 15 V (± 5 %)
e
Linearity
· Excellent accuracy
· Very good linearity
· Low thermal drift
· Low response time
· High bandwidth
L
Typ
Max
± 0.15 mA
IO
IOT
Offset current @ IP = 0, TA = 25°C
Thermal drift of IO
0°C .. + 25°C
± 0.06 ± 0.25 mA
± 0.10 ± 0.35 mA
+ 25°C .. + 70°C
· High immunity to external
interference
tr
Response time 2) @ 90 % of VP max
40
µs
· Low disturbance in common mode.
General data
Applications
TA
TS
RP
RS
m
Ambient operating temperature
Ambient storage temperature
0 .. + 70
- 25 .. + 85
250
110
22
°C
°C
W
W
g
· AC variable speed drives and servo
motor drives
· Static converters for DC motor drives
· Battery supplied applications
· Uninterruptible Power Supplies
(UPS)
Primary coil resistance @ TA = 70°C
Secondary coil resistance @ TA = 70°C
Mass
3)
Standards
EN 50178
· Power supplies for welding
applications.
1)
Notes : Between primary and secondary
2)
R 1 = 25 kW (L/R constant, produced by the resistance and inductance
of the primary circuit)
A list of corresponding tests is available
3)
981125/14
LEM Components
www.lem.com