Current Transducer LTC 1000-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
Î
P
R
M
Primary nominal r.m.s. current
Primary current, measuring range @ ± 24 V
Max overload not measurable
Measuring resistance
with ± 15 V
with ± 24 V
I
SN
K
N
V
C
I
C
@ ± 1000 A
max
@ ± 1200 A
max
@ ± 1000 A
max
@ ± 2000 A
max
1000
A
1)
0 .. ± 2400
A
10 / 10
kA/ms
R
M min
R
M max
0
0
0
0
15
7
50
7
Ω
Ω
Ω
Ω
Features
•
Closed loop (compensated) current
transducer using the Hall effect
•
Insulated plastic case recognized
according to UL 94-V0
•
Railway equipment.
Secondary nominal r.m.s. current
Conversion ratio
Supply voltage (± 5 %)
Current consumption
200
mA
1 : 5000
± 15 .. 24
V
< 30
(@±24V)
+
I
S
mA
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.
Accuracy - Dynamic performance data
X
G
Overall accuracy @
I
PN
,
T
A
= 25°C
@
I
PN
,
T
A
= - 40°C .. + 85°C
Linearity error
Offset current @
I
P
= 0,
T
A
= 25°C
Thermal drift of
I
O
- 40°C .. + 85°C
Response time
2)
@ 90 % of
I
PN
di/dt accurately followed
Frequency bandwidth (- 1 dB)
< ± 0.4
<±1
< 0.1
Max
± 0.5
±1
<1
> 100
DC .. 100
%
%
%
mA
mA
µs
A/µs
kHz
ε
L
I
O
I
OT
t
r
di/dt
f
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.
General data
T
A
T
S
R
S
m
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @
T
A
= 85°C
Mass
Standards
- 40 .. + 85
°C
- 45 .. + 90
°C
44
Ω
750
g
EN 50155 : 2001
•
Application Domain
•
Traction
Notes :
1)
2)
With a di/dt of > 5 A/µs
With a di/dt of 100 A/µs.
060615/2
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Page 1/4
LEM
w w w .lem.com
Current Transducer LTC 1000-S
Isolation characteristics
V
d
V
e
dCp
dCl
CTI
Notes :
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
R.m.s. voltage for partial discharge extinction
Creepage distance
Clearance distance
Comparative Tracking Index (Group I)
3)
4)
5)
13.4
3)
1.5
4)
> 2.8
5)
Min
66.70
45.90
600
kV
kV
kV
mm
mm
Between primary and secondary + shield
Between secondary and shield
Test carried out with a busbar
∅
40 mm centred in the through-hole.
Safety
This transducer must be used in electric/electronic equipment with respect to
applicable standards and safety requirements in accordance with the following
manufacturer's operating instructions.
Caution, risk of electrical shock
When operating the transducer, certain parts of the module can carry hazardous
voltage (eg. primary busbar, power supply).
Ignoring this warning can lead to injury and/or cause serious damage.
This transducer is a built-in device, whose conducting parts must be inaccessible
after installation.
A protective housing or additional shield could be used.
Main supply must be able to be disconnected.
060615/2
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Page 2/4
LEM
w w w .lem.com
Dimensions LTC 1000-S
Front view
(in mm. 1 mm = 0.0394 inch)
Left view
Connection
Top view
Mechanical characteristics
•
General tolerance
•
Fixing the transducer
Recommended fastening torque
•
Primary through-hole
•
Connection of secondary
Recommended fastening torque
± 1 mm
4 holes
∅
5.5 mm
4 screws M5
4 Nm or 2.95 Lb.-Ft.
∅
42 mm
M5 threaded studs
2.2 Nm or 1.62 Lb.-Ft.
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.
060615/2
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Page 3/4
LEM
w w w .lem.com
LTC 1000-S / Mechanical adaptation accessories
∅
Lines Accessories
1
2
3
4
5
6
7
8
9
10
11
Busbar KIT
*
(busbar : 210 x 40 x 12 mm)
Busbar KIT
*
(busbar : 185 x 40 x 8 mm)
Busbar KIT
*
(busbar : 285 x 36 x 12 mm)
Busbar KIT
*
(busbar : 260 x 36 x12 mm)
Busbar KIT
*
(busbar : 195 x 36 x 10 mm)
Busbar KIT
*
(busbar : 36 mm
∅
x 325 mm)
Busbar KIT
*
(busbar : 185 x 40 x 10 mm)
Busbar KIT
*
(busbar : 180 x 40 x 12 mm)
Busbar Fastening Kit (M5 x 25)
**
dedicated
to busbars from lines 1 to 5 and lines 7, 8.
Busbar Fastening Kit (M5 X 40)
**
dedicated
to busbar from line 6
Feet fixing Kit
***
References
93.34.61.100.0
*
93.34.61.102.0
93.34.61.103.0
93.34.61.104.0
**
93.34.61.105.0
93.34.61.106.0
***
93.34.61.107.0
93.34.61.108.0
93.34.61.200.0
93.34.61.201.0
93.34.63.100.0
including all the necessary for its mounting
such as screws, washers, nuts, 2 clamps,
busbar.
as with
*
but without the busbar.
including screws and 2 feet.
R.m.s. voltage value for partial discharge extinction depends on the busbar.
Refer to the datasheet of the corresponding product.
060615/2
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
Page 4/4
LEM
w w w .lem.com
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