CT50-T [LEM]
Current Transducers CT 50-T; 电流互感器CT 50 -T
| 型号： | CT50-T |
| 厂家： | 
LEM |
| 描述： | Current Transducers CT 50-T |
| 文件： | 总2页 (文件大小：58K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Current Transducer CT 50-T
IPN = 50 A
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).
Preliminary
Electrical data
IPN
IP
Primary nominal r.m.s. current
Primary current, measuring range
50
0 .. ± 75
5
50 A / 5 V
> 500
£ 5
A
A
V
Features
VOUT Analog output voltage
· Closed loop (compensated) current
transducer
· Insulated plastic case recognized
according to UL 94-V0
KN
RL
CL
tC
VC
IC
Conversion ratio
Load resistance
Capacitance loading
Output short-circuit duration 1)
Supply voltage (± 5 %)
W
nF
s
¥
± 15
· Patent pending.
V
Current consumption
90 + VOUT /RL mA
Advanced features
Vd
R.m.s. voltage for AC isolation test, 50 Hz, 1 mn
6
kV
· f = 500 kHz
· XG = ± 0.1 % (- 25°C .. + 70°C).
Accuracy - Dynamic performance data
Advantages
XG
VO
f
Overall accuracy @ IPN
Offset voltage @ IP = 0
- 25°C .. + 70°C
± 0.1
Typ
%
· Excellent accuracy
· Very good linearity
Max
TA = 25°C
- 25°C .. + 70°C
± 0.4 mV
± 0.6 mV
· Low temperature drift
· Optimized response time
· Wide frequency bandwidth
· No insertion losses
· High immunity to external
interference
Frequency bandwidth (- 3 dB) @ 10 % of I PN
DC .. 500
kHz
General data
· Current overload capability.
TA
TS
m
Ambient operating temperature
Ambient storage temperature
Mass
- 25 .. + 70
- 40 .. + 85
670
°C
°C
g
Applications
· AC variable speed drives and servo
motor drives
2)
Standards
EN 50178
· Static converters for DC motor drives
· Battery supplied applications
· Uninterruptible Power Supplies
(UPS)
· Switched Mode Power Supplies
(SMPS)
· Power supplies for welding
applications.
1)
Notes : 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)
980814/5
A list of corresponding tests is available
LEM Components
www.lem.com
Dimensions CT 50-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
Remarks
· General tolerance
· Fastening
· Connection of primary
Fastening torque
· Connection of secondary
Fastening torque
± 0.3 mm
2 x M5 screws
M8 threaded studs
9 Nm or 6.63 Lb - Ft
M5 threaded studs
2.2 Nm or 1.62 Lb - Ft
· VOUT is positive when IP flows in the direction of the arrow.
· This transducer induces into the primary circuit a square
wave of 7 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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