CT1-T 반도체 회로 부품 판매점
Current Transducer
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 LEM |
Current Transducer CT 1-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).
IPN = 1 A
Electrical data
IP N
IP
VOUT
KN
RL
CL
tC
VC
IC
Vd
Primary nominal r.m.s. current
Primary current, measuring range
Analog output voltage
Conversion ratio
Load resistance
Capacitance loading
Output short-circuit duration 1)
Supply voltage (± 5 %)
Current consumption
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
1
0 .. ± 2
5
1A/5V
> 500
≤5
∞
± 15
40 + VOUT / R L
6
A
A
V
Ω
nF
s
V
mA
kV
Accuracy - Dynamic performance data
X G Overall accuracy @ I P N
VO Offset voltage @ I P = 0
- 25°C .. + 70°C
TA = 25°C
- 25°C .. + 70°C
± 0.25
Typ Max
± 2.0
± 3.0
%
mV
mV
f Frequency bandwidth (- 3 dB) @ 50 % of I PN
DC .. 500
kHz
General data
TA Ambient operating temperature
TS Ambient storage temperature
m Mass
Standards
- 25 .. + 70
- 40 .. + 85
670
EN 50178
°C
°C
g
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.
Features
• Closed loop (compensated) current
transducer
• Insulated plastic case recognized
according to UL 94-V0
• Patent pending.
Advanced features
• f = 500 kHz
• X G = ± 0.25 % (- 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.
030331/4
LEM Components
w w w.lem.com
Dimensions CT 1-T (in mm. 1 mm = 0.0394 inch)
Front view
Left view
Secondary terminals
Terminal + : supply voltage + 15 V
Terminal M : measure
Terminal 0 : 0 V
Terminal - : supply voltage - 15 V
Connection
Top view
Mechanical characteristics
• General tolerance
• Fastening
• Connection of primary
• Connection of secondary
Fastening torque max
± 0.3 mm
2 x M5 screws
M5 threaded studs
M5 threaded studs
2.2 Nm or 1.62 Lb - Ft
Remarks
• VOUT is positive when IP flows in the direction of the arrow.
• This transducer induces into the primary circuit a square
wave of 70 mV amplitude (frequency ≈ 220 Hz). This voltage
can induce an AC current in the primary if the primary
impedance is low.
• 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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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
