LV25-800 Datasheet, PDF (1/2 Pages) LEM – Voltage Transducer LV 25-800

Voltage Transducer LV 25-800
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).
V_PN = 800 V
Electrical data
V
Primary nominal r.m.s. voltage
PN
V_P Primary voltage, measuring range
I
Primary nominal r.m.s. current
PN
R_M Measuring resistance
with ± 12 V
with ± 15 V
@ ± 800 V _max
@ ±1200 V
max
@ ± 800 V _max
@ ±1200 V
max
I_SN
Secondary nominal r.m.s. current
K _N Conversion ratio
V_C Supply voltage (± 5 %)
I
Current consumption
C
V_d
R.m.s. voltage for AC isolation test ¹⁾, 50 Hz, 1 mn
Accuracy - Dynamic performance data
X
Overall Accuracy @ V , T = 25°C
εG
L
Linearity
PN A
I_O
Offset current @ I_P = 0, T_A = 25°C
I
Thermal drift of I
OT
O
- 25°C .. + 25°C
+ 25°C .. + 70°C
t_r
Response time @ 90 % of V_{P max}
General data
T_A
Ambient operating temperature
T
Ambient storage temperature
S
N
Turns ratio
P
Total primary power loss
R ₁ Primary resistance @ T_A = 25°C
R
Secondary coil resistance @ T = 70°C
S
A
m
Mass
Standards ²⁾
800
V
0 .. ± 1200
V
10
mA
R_{M min}
R_{M max}
30
200 Ω
30
100 Ω
100 320 Ω
100 180 Ω
25
mA
800 V / 25 mA
± 12 .. 15
V
10
(@
±
15
V)
+
I
S
mA
4.1
kV
± 0.8
%
< 0.2
%
Typ Max
± 0.15 mA
± 0.10 ± 0.60 mA
± 0.10 ± 0.60 mA
25
µs
- 25 .. + 70
°C
- 40 .. + 85
°C
2500 : 1000
8
W
80
kΩ
110
Ω
60
g
EN 50178
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
•Uninterruptible Power Supplies
(UPS)
•Power supplies for welding
applications.
Notes : ¹⁾ Between primary and secondary
2) _{A list of corresponding tests is available}
980909/2
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