參數(shù)資料
型號(hào)： CT25-T
廠商： LEM
英文描述： Current Transducers CT 25-T
中文描述： 電流轉(zhuǎn)換器的CT 25 - T的
文件頁(yè)數(shù)： 1/2頁(yè)
文件大小： 54K
代理商： CT25-T
Current Transducer CT 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).
Electrical data
I
P N
Primary nominal r.m.s. current
25
A
I
P
Primary current, measuring range
0 .. ± 37.5
A
V
OU T
Analog output voltage
5
V
K
N
Conversion ratio
25 A / 5 V
R
L
Load resistance
> 500
C
L
Capacitance loading
≤ 5
nF
t
C
Output short-circuit duration 1)
∞
s
V
C
Supply voltage (± 5 %)
± 15
V
I
C
Current consumption
90 + V
OUT / RL
mA
V
d
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
6
kV
Accuracy - Dynamic performance data
X
G
Overall accuracy @ I
PN
- 25°C .. + 70°C
± 0.1
%
Typ
Max
V
O
Offset voltage @ I
P = 0
T
A = 25°C
± 0.4
mV
- 25°C .. + 70°C
± 0.6
mV
f
Frequency bandwidth (- 3 dB) @ 10 % of I
PN
DC .. 500
kHz
General data
T
A
Ambient operating temperature
- 25 .. + 70
°C
T
S
Ambient storage temperature
- 40 .. + 85
°C
m
Mass
670
g
Standards 2)
EN 50178
Notes : 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
2) A list of corresponding tests is available.
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.
I
PN
=
25 A
980814/5
LEM Components
ww w .lem.com
Preliminary
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