Current Transducer LTC 600-SFC
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
=
500 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
@ ± 500 A
max
@ ± 1200 A
max
@ ± 500 A
max
@ ± 1500 A
max
500
A
0 .. ± 1500
A
10 / 10
kA/ms
R
M min
R
M max
0
0
0
0
70
5
150
20
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
•
Transducer delivered with feet and
clamps
•
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
100
1 : 5000
± 15 .. 24
< 30
(@±24V)
+
I
S
13.4
1)
1.5
2)
> 2.8
3)
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
< ± 0.7
< ± 1.6
< 0.1
Max
± 0.5
±1
<1
> 100
DC .. 100
%
%
%
mA
mA
µs
A/µs
kHz
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.
- 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
800
g
EN 50155 (01.12.20)
Notes :
Between primary and secondary + shield
Between secondary and shield
Test carried out with a busbar
∅
40 mm centred in the through-hole
With a di/dt of 100 A/µs.
030528/0
LEM Components
w w w.lem.com
Dimensions LTC 600-SFC
(in mm. 1 mm = 0.0394 inch)
Front view
Left view
Customer bar
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
•
Primary through-hole
•
Connection of secondary
Fastening torque max
± 1 mm
4 slots
∅
6.5 mm
4 screws M6
5 Nm
∅
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.
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without previous notice.
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