CT5-T_06 Datasheet, PDF (1/3 Pages) LEM – Current Transducer

Current Transducer CT 5 .. 25-T
For very accurate measurements of currents : DC, AC, pulsed...,
with a galvanic isolation between the primary circuit (high power)
and the secondary circuit (electronic circuit).
I_PN = 5 .. 25 A
0632
Electrical data
Primary nominal
current
I_PN (A r.m.s.)
Primary current,
measuring range
I_P (A)
5
7.5
10
15
25
37.5
V
OUT
R_L
C
L
t_C
V
C
I_C
Analog output voltage
Load resistance
Capacitance loading
Output short-circuit duration ¹⁾
Supply voltage (± 5 %)
Current consumption
Conversion
ratio
K _N (A/V)
5 A/5 V
10 A/ 5 V
25 A/5 V
Accuracy - Dynamic performance data
X
Overall accuracy @ I
G
PN
- 25°C .. + 70°C
V_O
Offset voltage @ I _P = 0
T_A = 25°C
- 25°C .. + 70°C
f
Frequency bandwidth (- 3 dB) @ 10 % of I
PN
t_r
Response time
General data
T_A
Ambient operating temperature
T
Ambient storage temperature
S
m
Mass
Standards
Type
CT 5-T
CT 10-T
CT 25-T
5
V
> 500
Ω
≤5
nF
∞
s
± 15
V
30 + V_OUT / R_L mA
± 0.1
%
Max
± 0.4
mV
± 0.6
mV
DC .. 500
kHz
<1
µs
- 25 .. + 70
°C
- 40 .. + 85
°C
670
g
EN 50178 : 1996
Features
• Closed loop (compensated) current
transducer
• Insulated plastic case recognized
according to UL 94-V0
• Patent pending.
Advanced features
• f = 500 kHz
• X _G = ± 0.1 % (- 25°C .. + 70°C).
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.
Note :
1) _{If the short-circuit has a duration more than 1 s, the primary current of}
the supply voltage must be interrupted for a short time to restore the
transducer to proper working order. The internal protection is done by
PTC resistors.
Application domain
• Industrial.
060927/0
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
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