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Current Transducers CT 0.1 .. 0.4-P
For the electronic measurement of small currents: AC,DC, mixed, with a galvanic isolation between the primary circuit and the secondary circuit.
IPN = 100..400 mA VOUT = 5 V
Electrical data
Primary nominal current rms IPN (mA) 100 200 400 Primary current, measuring range IPM (mA) 180 360 720 Type RoHS since date code 46129 46054 46234
Features
* DC & AC earth leakage current transducer using a flux-gate principle * PCB mounting * 15V power supply * 5V output @ IPN * Insulated plastic case recognized
according to UL94-V0.
CT 0.1-P CT 0.2-P CT 0.4-P
VC IC RIS VOUT ROUT RL CL
Supply voltage ( 5 %) Current consumption Isolation resistance @ 500 VDC Output voltage (Analog) @ IPN, RL= 10k , TA=25C Output internal resistance Load resistance Capacitive loading
15 35 > 500 5 < 51 10 5
V mA M V k nF
Accuracy-Dynamic performance data
X
Advantages
<1 %of IPN < 0.5 %of IPN < 0.05 %/K < 50 mV <2 mV < 20 mV <4 mV/K <3 mV/K <2 mV/K 20 ms 60 ms DC .. 7000 Hz DC .. 11000 Hz DC .. 18000 Hz
L
TCVOUT VOE VOH
TCVOE
tr BW
Accuracy (excluding offset) @ IPN, TA = 25C, RL = 10k Linearity error (0 .. IPN) Temperature coefficient of VOUT (of reading) Eletrical offset voltage @ IP = 0, TA = 25C Hysteresis offset voltage @ IP = 0; after an excursion of 1 x IPN @ IP = 0; after an excursion of 100 x IPN Temperature coefficient of VOE @ -20..+85C CT 0.1-P CT 0.2-P CT 0.4-P Response time to 80% of IPN step 90% of IPN step Frequency bandwidth (- 3 dB) CT 0.1-P CT 0.2-P CT 0.4-P
* Small size * Bandwidth : DC .. up to 18kHz * Response time better than 60 ms * Cost effective, compact alternative to classical RCDs (Residual Current Device)
Applications
* Earth leakage detection in transformerless solar inverters * 1st human contact protection of PV arrays * Failure detection in power sources * Symmetrical fault detection (e.g. after motor inverter) * Current leakage detection in stacked DC sources * Single phase or three phase differential current measurement up to 30A per wire (DC or AC)
General data
TA TS dCp dCl CTI m Ambient operating temperature Ambient storage temperature Creepage distance Clearance distance Comparative tracking index (Group IIIa) Mass Standards - 20 .. + 85 C - 25 .. + 85 C > 5.5 mm > 5.5 mm > 220 25 g EN 50178: 1997
Application Domain
* Industrial
copyright protected
Page 1/3
061017/9
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
Current Transducer CT 0.1 .. 0.4-P
Isolation characteristics
Vb Rated isolation voltage rms with IEC 61010-1 standard and following conditions - Single insulation - Over voltage category III - Pollution degree 2 - Heterogeneous field Rated isolation voltage rms with EN 50178 standard and following conditions - Reinforced insulation - Over voltage category III - Pollution degree 2 - Heterogeneous field Rms voltage for AC isolation test, 50 Hz, 1 min Partial discharge extinction voltage rms @ 10pC Impulse withstand voltage 1.2/50s 150 V rms
Vb
250
V rms
Vd Ve Vw
2.5 > 1.2 6
kV kV kV
If insulated cable is used for the primary circuit, the voltage category could be improved with the following table : Cable insulation (primary) Category HAR 03 300V CAT III HAR 05 400V CAT III HAR 07 500V CAT III
Page 2/3
061017/9
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com
Dimensions CT 0.1 .. 0.4-P (in mm. 1 mm = 0.0394 inch)
30 20 11.0
M GND
M GND Vcc+ Vcc 12.6 17.8
17.8
-V c + c c Vc
52
0. 5 0.50.3
O 11 f 11 o
30
5 2
4- 0.7
0.3
4- 0.7
2-F 2 2-O2 (NC)
0.3
I
Ip flux-gate DC +Vcc
transformer AC
M GND
*|Vcc
+Vcc +Vcc Vcc -Vcc GND
2-O5 0.3
4.3 10. 5
10.5
11
20.3
2-F 5
GND M M
RL
Vout
Mechanical characteristics
* General tolerance
(Unless otherwise specified in * Aperture for primary conductor * Connection of secondary Recommended PCB hole * PCB fixation Recommended PCB hole 1 mm the above drawings.) O11 mm 4 pins 0.7 x 0.7 mm2 1.2 mm 2 pins O2 mm 2.2 mm
Safety
This transducer must be used in electric/electronic equipment with respect to applicable standards and safety requirements in accordance with the following manufacturer's operating instructions.
Remarks
Caution, risk of electrical shock
* VOUT is positive when IP flows in the direction of the
arrow. * This transducer induces into the primary circuit a square wave of 500Hz. This voltage can induce an AC current in the primary if the primary impedance is low. * Primary impedance 10 CT0.1-P CT0.2-P CT0.4-P VOUT by induced current 0.5% 0.4% 0.2% of IPN * Temperature of the primary conductor should not exceed 100C. 061017/9
When operating the transducer, certain parts of the module can carry hazardous voltage (eg. primary busbar, power supply). Ignoring this warning can lead to injury and/or cause serious damage. This transducer is a built-in device, whose conducting parts must be inaccessible after installation. A protective housing or additional shield could be used. Main supply must be able to be disconnected.
Page 3/3
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
www.lem.com

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