Current Transducer LTC 1000-T
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
V
d
V
e
@ ± 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
mA
V
mA
kV
kV
kV
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
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
R.m.s. voltage for partial discharge extinction
200
1 : 5000
± 15 .. 24
< 30
(@±24V)
+
I
S
13.4
2)
1.5
3)
> 2.8
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
Offset current @
I
P
= 0,
T
A
= 25°C
Thermal drift of
I
O
Response time @ 90 % of
I
PN
di/dt accurately followed
Frequency bandwidth (- 1 dB)
4)
ε
L
< ± 0.4
<±1
< 0.1
Max
± 0.5
±1
<1
> 100
DC .. 100
%
%
%
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
- 40°C .. + 85°C
General data
T
A
T
S
R
S
m
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @
T
A
= 85°C
Mass
Standards
1)
2)
3)
4)
- 40 .. + 85
°C
- 45 .. + 90
°C
44
Ω
1270
g
EN 50155 (01.12.20)
•
Notes :
With a di/dt of > 5 A/µs
Between primary and secondary + shield
Between secondary and shield
With a di/dt of 100 A/µs.
030528/0
LEM Components
w w w.lem.com
Dimensions LTC 1000-T
(in mm. 1 mm = 0.0394 inch)
Front view
Left view
Secondary terminals
Terminal + : supply voltage + 15 .. 24 V
Terminal M : measure
Terminal - : supply voltage - 15 .. 24 V
Terminal E : shield
Connection
or
Top view
Mechanical characteristics
•
General tolerance
•
Fixing the transducer
± 1 mm
2 holes
∅
13 mm
or by the primary bar
2 steel screws M12
24.5 Nm
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.
Fastening torque max
•
Connection of secondary
Fastening torque max
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
