LEM LTC1000-T

Current Transducer LTC 1000-T
IPN =
1000 A
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).
Electrical data
IPN
IP
ÎP
RM
Primary nominal r.m.s. current
Primary current, measuring range @ 24 V
Max overload not measurable
Measuring resistance
with ± 15 V
with ± 24 V
@ ± 1000 A max
@ ± 1200 A max
@ ± 1000 A max
@ ± 2000 A max
ISN
KN
VC
IC
Vd
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
Ve
R.m.s. voltage for partial discharge extinction
1000
A
0 .. ± 2400 1)
A
10 / 10
kA/ms
RM min RM max
0
0
0
0
15
7
50
7
200
1 : 5000
± 15 .. 24
< 30 (@±24V) +IS
13.4 2)
1.5 3)
> 2.8
Ω
Ω
Ω
Ω
mA
V
mA
kV
kV
kV
Accuracy - Dynamic performance data
XG
Overall accuracy @ IPN , TA = 25°C
@ IPN , TA = - 40°C .. + 85°C
Linearity
< ± 0.4
<±1
< 0.1
%
%
%
IO
IOT
Offset current @ IP = 0, TA = 25°C
Thermal drift of IO
Max
± 0.5
±1
mA
mA
tr
di/dt
f
Response time 4) @ 90 % of IPN
di/dt accurately followed
Frequency bandwidth (- 1 dB)
ε
L
- 40°C .. + 85°C
<1
> 100
DC .. 100
µs
A/µs
kHz
Notes :
Ambient operating temperature
Ambient storage temperature
Secondary coil resistance @ TA = 85°C
Mass
Standards
1)
2)
3)
4)
• Closed loop (compensated) current
transducer using the Hall effect
• Insulated plastic case recognized
according to UL 94-V0
• Railway equipment.
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.
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
General data
TA
TS
RS
m
Features
(SMPS)
- 40 .. + 85
°C
- 45 .. + 90
°C
44
Ω
1270
g
EN 50155 (01.12.20)
• Power supplies for welding
applications.
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
Fastening torque max
• Connection of secondary
Fastening torque max
Remarks
± 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
• IS is positive when IP 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.
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.