Datasheet

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N° 97.13.25.000.0
I
PN
= 50 A
Features
● Closed loop (compensated)
current transducer using the Hall
effect
● Insulating plastic case recognized
according to UL 94-V0.
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
(SMPS)
● Power supplies for welding
applications.
Application domain
● Industrial.
Current Transducer LA 55-P
For the electronic measurement of currents: DC, AC, pulsed...,
with galvanic separation between the primary circuit and the secondary
circuit.
Electrical data
I
PN
Primary nominal rms current 50 A
I
PM
Primary current, measuring range 0 .. ±70 A
R
M
Measuring resistance @ T
A
= 70 °C T
A
= 85 °C
R
M min
R
M max
R
M min
R
M max
with ±12 V @ ±50 A
max
10 100 60 95 Ω
@ ±70 A
max
10 50 60
1)
60
1)
Ω
with ±15 V @ ±50 A
max
50 160 135 155 Ω
@ ±70 A
max
50 90 135
2)
135
2)
Ω
I
SN
Secondary nominal rms current 50 mA
K
N
Conversion ratio 1 : 1000
U
C
Supply voltage (±5 %) ±12 .. 15 V
I
C
Current consumption 10 (@ ±15 V) + I
S
mA
Accuracy - Dynamic performance data
X Accuracy @ I
PN
, T
A
= 25 °C @ ±15 V (±5 %) ±0.65 %
@ ±12 .. 15 V (±5 %) ±0.90 %
ε
L
Linearity error <0.15 %
Typ Max
I
O
Offset current @ I
P
= 0, T
A
= 25 °C ±0.2 mA
I
OM
Magnetic offset current
3)
@ I
P
= 0 and specied R
M
,
after an overload of 3 × I
PN
±0.3 mA
I
OT
Temperature variation of I
O
-25 °C .. +85 °C ±0.1 ±0.6 mA
-40 °C .. -25 °C ±0.2 ±1.0 mA
t
ra
Reaction time <500 ns
t
r
Step response time to 90 % of I
PN
<1 µs
di/dt di/dt accurately followed >200 A/µs
BW Frequency bandwidth (-1 dB) DC .. 200 kHz
General data
T
A
Ambient operating temperature -40 .. +85 °C
T
S
Ambient storage temperature -40 .. +90 °C
R
S
Resistance of secondary winding @ T
A
= 70 °C 80 Ω
  @ T
A
= 85 °C 85 Ω
m Mass 18 g
Standards EN 50178: 1997
UL 508: 2010
Notes:
1)
Measuring range limited to ±60 A
max
2)
Measuring range limited to ±55 A
max
3)
Result of the coercive eld of the magnetic circuit.