LV25P Datasheet, PDF (1/2 Pages) LEM – VOLTAGE TRANSDUCER

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 = 10 .. 500 V
PN
Electrical data
I
Primary nominal r.m.s. current
PN
I_P
Primary current, measuring range
R
Measuring resistance
M
with ± 12 V
with ± 15 V
@ ± 10 mA
max
@ ± 14 mA _max
@ ± 10 mA
max
@ ± 14 mA _max
I_SN
Secondary nominal r.m.s. current
K _N Conversion ratio
V_C Supply voltage (± 5 %)
I_C
Current consumption
V
R.m.s. voltage for AC isolation test ¹⁾, 50 Hz, 1 mn
d
Accuracy - Dynamic performance data
10
mA
0 .. ± 14
mA
R
M min
R
M max
30
190 Ω
30
100 Ω
100 350 Ω
100 190 Ω
25
mA
2500 : 1000
± 12 .. 15
V
10 (@ ±15 V)+ I_S mA
2.5
kV
Features
•Closed loop (compensated) voltage
transducer using the Hall effect
•Insulated plastic case recognized
according to UL 94-V0.
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.
X _G Overall Accuracy @ I_PN , T_A = 25°C @ ± 12 .. 15 V
@ ± 15 V (± 5 %)
ε_L
Linearity
I_O
Offset current @ I_P = 0, T_A = 25°C
I
Thermal drift of I
OT
O
0°C .. + 25°C
+ 25°C .. + 70°C
t
Response time ²⁾ @ 90 % of V
r
P max
General data
T_A
Ambient operating temperature
T
Ambient storage temperature
S
R _P Primary coil resistance @ T_A = 70°C
R
Secondary coil resistance @ T = 70°C
S
A
m
Mass
Standards ³⁾
± 0.9
%
± 0.8
%
< 0.2
%
Typ Max
± 0.15 mA
± 0.06 ± 0.25 mA
± 0.10 ± 0.35 mA
40
µs
0 .. + 70
°C
- 25 .. + 85
°C
250
Ω
110
Ω
22
g
EN 50178
Advantages
•Excellent accuracy
•Very good linearity
•Low thermal drift
•Low response time
•High bandwidth
•High immunity to external
interference
•Low disturbance in common mode.
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⁾ Between primary and secondary
2)
R
1
=
25
kΩ
(L/R
constant,
produced
by
the
resistance
and
inductance
of the primary circuit)
3) _{A list of corresponding tests is available}
981125/14
LEM Components
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