Current Transducer LT 505-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
=
500 A
Electrical data
I
PN
I
P
R
M
Primary nominal r.m.s. current
Primary current, measuring range
Measuring resistance @
with 鹵 15 V
with 鹵 24 V
I
SN
K
N
V
C
I
C
V
d
V
b
@鹵
@鹵
@鹵
@鹵
500
800
500
1200
A
max
A
max
A
max
A
max
500
0 .. 鹵 1200
T
A
= 70擄C
T
A
= 85擄C
R
M min
R
M max
R
M min
R
M max
0
0
0
0
65
15
145
22
0
0
15
15
60
12
140
18
A
A
Features
鈥?/div>
Closed loop (compensated) current
transducer using the Hall effect
鈥?/div>
Insulated plastic case recognized
according to UL 94-V0.
鈩?/div>
鈩?/div>
鈩?/div>
鈩?/div>
Advantages
鈥?/div>
Excellent accuracy
鈥?/div>
Very good linearity
鈥?/div>
Low temperature drift
鈥?/div>
Optimized response time
鈥?/div>
Wide frequency bandwidth
鈥?/div>
No insertion losses
鈥?/div>
High immunity to external
interference
鈥?/div>
Current overload capability.
Secondary nominal r.m.s. current
Conversion ratio
Supply voltage (鹵 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
100
mA
1 : 5000
鹵 15 .. 24
V
30
(@ 鹵 24 V) +
I
S
mA
6
kV
1750
V
3500
V
Accuracy - Dynamic performance data
X
G
蔚
L
Overall accuracy @
I
PN
,
T
A
= 25擄C
Linearity
Offset current @
I
P
= 0,
T
A
= 25擄C
Thermal drift of
I
O
- 10擄C .. + 85擄C
Response time
2)
@ 90 % of
I
P max
di/dt accurately followed
Frequency bandwidth (- 1 dB)
鹵 0.6
< 0.1
Typ
Max
鹵 0.4
鹵 0.5
%
%
mA
mA
碌s
A/碌s
kHz
Applications
鈥?/div>
AC variable speed drives and servo
motor drives
鈥?/div>
Static converters for DC motor drives
鈥?/div>
Battery supplied applications
鈥?/div>
Uninterruptible Power Supplies
(UPS)
鈥?/div>
Switched Mode Power Supplies
(SMPS)
鈥?/div>
Power supplies for welding
applications.
I
O
I
OT
t
r
di/dt
f
鹵 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
65
69
850
EN 50178
擄C
擄C
鈩?/div>
鈩?/div>
g
T
A
= 70擄C
T
A
= 85擄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/碌s
A list of corresponding tests is available
980716/2
LEM Components
Tope Co., Ltd.
Tel: (02) 8228-0658
Fax: (02) 8228-0659
http://www.sensor.com.tw
w w w .lem.com
e-mail: tope@ms1.hinet.net
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