Current Transducer LT 1005-S
For the electronic measurement of currents : DC, AC, pulsed...,
with a galvanic isolation between the primary circuit (high power)
and the secondary circuit (electronic circuit).
I
PN
=
1000 A
Electrical data
I
PN
I
P
R
M
Primary nominal r.m.s. current
Primary current, measuring range
Measuring resistance @
with ± 15 V
with ± 24 V
I
SN
K
N
V
C
I
C
V
d
V
b
@ ± 1000 A
max
@ ± 1200 A
max
@ ± 1000 A
max
@ ± 2000 A
max
1000
0 .. ± 2000
T
A
= 70°C
T
A
= 85°C
R
M min
R
M max
R
M min
R
M max
0
0
0
0
22.5
11
65
10
0
0
0
0
18.5
8
62
7
A
A
Features
•
Closed loop (compensated) current
transducer using the Hall effect
•
Insulated plastic case recognized
according to UL 94-V0.
Ω
Ω
Ω
Ω
Advantages
•
Excellent accuracy
•
Very good linearity
•
Low temperature drift
•
Optimized response time
•
Wide frequency bandwidth
•
No insertion losses
•
High immunity to external
interference
•
Current overload capability.
Secondary nominal r.m.s. current
Conversion ratio
Supply voltage (± 5 %)
Current consumption
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
R.m.s. rated voltage
1)
, safe separation
basic isolation
200
mA
1 : 5000
± 15 .. 24
V
30
(@ ± 24 V) +
I
S
mA
6
kV
1750
V
3500
V
Accuracy - Dynamic performance data
X
G
ε
L
Overall accuracy @
I
PN
,
T
A
= 25°C
Linearity
Offset current @
I
P
= 0,
T
A
= 25°C
Thermal drift of
I
O
- 10°C .. + 85°C
Response time
2)
@ 90 % of
I
P max
di/dt accurately followed
Frequency bandwidth (- 1 dB)
± 0.4
< 0.1
Typ
Max
± 0.4
± 0.5
%
%
mA
mA
µs
A/µs
kHz
Applications
•
AC variable speed drives and servo
motor drives
•
Static converters for DC motor drives
•
Battery supplied applications
•
Uninterruptible Power Supplies
(UPS)
•
Switched Mode Power Supplies
(SMPS)
•
Power supplies for welding
applications.
I
O
I
OT
t
r
di/dt
f
± 0.3
<1
> 50
DC .. 150
General data
T
A
T
S
R
S
m
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @
Mass
Standards
- 10 .. + 85
- 25 .. + 100
43
46
320
EN 50178
°C
°C
Ω
Ω
g
T
A
= 70°C
T
A
= 85°C
3)
Notes :
1)
2)
3)
Pollution class 2. With a non insulated primary bar which fills the
through-hole
With a di/dt of 100 A/µs
A list of corresponding tests is available
980716/4
LEM Components
w w w .lem.com
Dimensions LT 1005-S
Front view
(in mm. 1 mm = 0.0394 inch)
Left view
Secondary terminals
Terminal + : supply voltage + 15 .. 24 V
Terminal M : measure
Terminal - : supply voltage - 15 .. 24 V
Connection
Top view
Mechanical characteristics
•
General tolerance
•
Fastening
•
Primary through-hole
•
Connection of secondary
± 0.5 mm
4 holes
∅
6.5 mm
40.5 x 40.5 mm
Faston 6.3 x 0.8 mm
Remarks
•
I
S
is positive when
I
P
flows in the direction of the arrow.
•
Temperature of the primary conductor should not exceed
100°C.
•
Dynamic performances (di/dt and response time) are best
with a single bar completely filling the primary hole.
•
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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