Voltage Transducer LV 25-1000
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
=
1000 V
Electrical data
V
PN
V
P
I
PN
R
M
Primary nominal r.m.s. voltage
Primary voltage, measuring range
Primary nominal r.m.s. current
Measuring resistance
with ± 12 V
with ± 15 V
I
SN
K
N
V
C
I
C
V
d
@ ±1000
@ ±1500
@ ±1000
@ ±1500
V
max
V
max
V
max
V
max
1000
V
0 .. ± 1500
V
8
mA
R
M min
R
M max
30
30
100
100
200
100
320
180
Ω
Ω
Ω
Ω
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.
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
1000 V / 25 mA
± 12 .. 15
V
10
(@ ± 15 V) +
I
S
mA
4.1
kV
Advantages
•
Excellent accuracy
•
Very good linearity
•
Low thermal drift
•
High immunity to external
interference.
Accuracy - Dynamic performance data
X
G
ε
L
Overall Accuracy @
V
PN
,
T
A
= 25°C
Linearity
Offset current @
I
P
= 0,
T
A
= 25°C
Thermal drift of
I
O
Response time @ 90 % of
V
P max
± 0.8
< 0.2
Max
± 0.15
± 0.10 ± 0.60
± 0.10 ± 0.60
40
Typ
%
%
mA
mA
mA
µs
Applications
•
AC variable speed drives and servo
motor drives
•
Static converters for DC motor drives
•
Uninterruptible Power Supplies
(UPS)
•
Power supplies for welding
applications.
I
O
I
OT
t
r
- 25°C .. + 25°C
+ 25°C .. + 70°C
General data
T
A
T
S
N
P
R
1
R
S
m
Ambient operating temperature
Ambient storage temperature
Turns ratio
Total primary power loss
Primary resistance @
T
A
= 25°C
Secondary coil resistance @
T
A
= 70°C
Mass
Standards
2)
1)
2)
- 25 .. + 70
- 40 .. + 85
3100 : 1000
8
125
110
60
EN 50178
°C
°C
W
k
Ω
Ω
g
Notes :
Between primary and secondary
A list of corresponding tests is available
980909/2
LEM Components
w w w .lem.com
Dimensions LV 25-1000
Front view
(in mm. 1 mm = 0.0394 inch)
Top view
Standard 00
or N° SP..
Year
Week
Secondary terminals
Terminal + : supply voltage + 12 .. 15 V
Terminal M : measure
Terminal - : supply voltage - 12 .. 15 V
Connection
Mechanical characteristics
•
General tolerance
•
Fastening
•
Connection of primary
•
Connection of secondary
± 0.3 mm
4 holes
∅
4.2 mm
Faston 6.3 x 0.8 mm
Faston 6.3 x 0.8 mm
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.
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
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