Mianyang Weibo Electronic WBI412M05 User manual

Mianyang Weibo Electronics Co.,Limited
No.7 Road 2 of Xianren Road Youxian District Mianyang City P.R. China
Tel: [phone] Fax: [phone]
www.mywbdz.com [e-mail]
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Designing, Manufacturing and Supplying WB Series Electric Isolated Sensor and Digital
Electrical Sensor since 1989
USER MANUAL
WBI412M05 AC Current Sensor
www.mywbdz.com
[email protected]
Technical Service: 86 816 2778271
Quality Complain: 86 816 2278273
Fax Line: 86 816 2281934
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Certified
Quality Warranty
Any quality problem found in WB series products, we offer
Three years free charge of repair the products, and six months guaranteed free charge of change and return the
products.

Mianyang Weibo Electronics Co.,Limited
No.7 Road 2 of Xianren Road Youxian District Mianyang City P.R. China
Tel: [phone] Fax: [phone]
www.mywbdz.com [e-mail]
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WBI412M05 AC Current Sensor
Safety claim
The information in the safety claim of the equipment documentation is intended to ensure that
equipment is properly installed in order to maintain it in a condition.
It is assumed that everyone who would be associated with the equipment should be familiar with
the contents of that safety section, or this safety guide.
When electrical equipment is in operation, dangerous voltages will be present in certain parts of
the equipment (e.g. the input terminal). Failure to obverse warning notices, incorrect use, or
improper use may endanger personnel and equipment and course personal injury or physical
damage.
Before working in the terminal strip area, the equipment must be isolated.
Proper and safe operation of the equipment depends on appropriate shipping and handling, proper
storage, installation and commissioning, and on careful operation, maintenance and servicing.
The operating manual for the equipment gives instructions for its installation, commissioning, and
operation. However, the manual cannot cover all conceivable circumstances or include detailed
information on all topics. In the event of questions or specific problem, do not take any action
without proper authorization. Contact the appropriate WB technical sales office and request the
necessary information.
Standard application
1. Accuracy
Accurate degree is conformed to IEC688:1992
2. Safety
2.1 Overload capability
Overload capability is conformed to IEC688:1992
2.2 Isolation voltage
Can be endured testing voltage is conformed to Q/72085584-0.1-2004
2.3 Insulation impedance
The insulation impedance is no less than 20M Ohm, is conformed to
Q/72085584-0.1-2004
3. Electromagnetic Capability
3.1 Electromagnetic field immunity test according to IEC 61000-4-3:1995
3.2 Power frequency magnetic field immunity test according to IEC 61000-4-8:1993

Mianyang Weibo Electronics Co.,Limited
No.7 Road 2 of Xianren Road Youxian District Mianyang City P.R. China
Tel: [phone] Fax: [phone]
www.mywbdz.com [e-mail]
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Product Description and Application
WBI412M05 uses a special isolation module to measure the AC current in the grid and circuit in
real time and transform it into the DC voltage (Uz) output of the standard vertebra; with high
precision, high isolation, low drift, low power consumption and wide temperature range. It has
strong anti-interference ability and wide working power range. This product adopts card-mounted
structure, terminal wiring, easy installation, input, output, power supply three isolation, suitable
for power equipment, power network monitoring automation system, industrial control monitoring
system, railway signal system.
Product Dimensional Drawing (unit: mm)

Mianyang Weibo Electronics Co.,Limited
No.7 Road 2 of Xianren Road Youxian District Mianyang City P.R. China
Tel: [phone] Fax: [phone]
www.mywbdz.com [e-mail]
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Terminals definition
Key Technical Data:
1. Input: 0.5A, 1A, 2A, 3A, 4A, 5A AC;
2. Output: 0-20mA, 4-20mA DC
3. Accuracy : 0.2%
4. frequency range: 25Hz～3kHz
5. Input Impedance (R): measuring current＜100mA, input impedance 200Ω；
Measuring current ≥100mA, input impedance approximate zero
6. Linear Range:0-120% of nominal input
7. Responding Time: 300ms
8. Over Load Capacity: 30 times of nominal input, for 5 seconds;
9. Output impedance (Output current): 6V
10. Auxiliary Power: +9V-+36V DC
11. Isolation Voltage(Input/Output): 2500Vdc, for 1 minute
12. Output Ripple: ＜10mV
13. Drifting by Temperature: 1.0×10-4/℃
14. Ambient Temperature: -25℃～+70℃
15. Mounting : DIN Rail 35mm Mounting or screw mounting.
16. Protection class: EMC (Complying with EN61326:2006)
Safety standard(Complying with EN60100:2001)
Instruction of Installation and Use
1. The product has adopted structure compliance with EN50022; suitable for DIN rail
mounting NS35/7.5, NS35/15. Installation steps are as following (please reference to
dimensional drawing):
Non-identified terminals cannot be used！
Positive voltage output (OUT+)
Working power ground(GND)
Current input（IN-）
Positive working power(+E)
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2
3
4 8
7
6
5
12
11
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9
Current output（IN+）
N
egative voltage output (OUT-)

Mianyang Weibo Electronics Co.,Limited
No.7 Road 2 of Xianren Road Youxian District Mianyang City P.R. China
Tel: [phone] Fax: [phone]
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Step 1: Immobilize one side of product‘s mounting trough to the DIN mounting rail;
Step 2: Pull out the spring clasp;
Step 3: Place whole mounting trough to the DIN mounting rail properly;
Step 4: Release spring clasp to make sure the installation.
2. The product has calibrated before out of factory. After correctly wiring, it can be
powered and used immediately. But for further precise signal sampling, user needs to
warm-up the product for 3 minutes before use.
The auxiliary power requires isolation voltage≥2000VAC, DC current output ripple＜
10mV, and multiple converters can share with one set auxiliary power together.
3. The Maximum volume of line for the sensor terminal is 2.5mm2; the insulation layer of
the line should be peeled off about 8mm～10mm and tightly twisted to connect with the
sensor terminals.
4. For the less than 10A AC current measurement, it may adopt ampere-turn method for
input and for this time, the resolution of the sensor increases and measuring range
narrows, but other technical index may not be affected.
5. Basic testing method for accuracy
(1) According to the terminal definition table to connect the testing circuit;
(2) The testing must to be done by under the following conditions；
Auxiliary power: DC +9V～+36V，ripple≤5mV
Ambient temperature: 25℃±2℃
Relative humidity: RH(45～75)％
Accuracy for Signal Power Source instrument: 0.05
(3) Warming up the sensor for 3 minutes
(4) Using output monitoring meter V1 to measuring the output of signal power
source instrument, set any input value which is within the measuring range of
the sensor Ir. (e.g. if input value is 50A, the output is 0V～5V, the expected
Power
Source
Sensor
Auxiliary Power
V1
V2
8
5
+
+
-
-
R
1
4
9+ 12-

Mianyang Weibo Electronics Co.,Limited
No.7 Road 2 of Xianren Road Youxian District Mianyang City P.R. China
Tel: [phone] Fax: [phone]
www.mywbdz.com [e-mail]
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output value Vz should be calculated as: Vz = 5V×Ir/50A )
(5) Using output monitoring meter V2 to measuring the output voltage V0 of the
sensor, the basic introduced errorγof the sensor should be calculated as:γ=
(Vo－Vz)/5V×100
(6) Repeating step (4) (5), if calculated absolute value is less than the given
accuracy value of the sensor, it shows the sensor’s accurate grade is qualified.
Caution:
1. Pay attention to the auxiliary power information, especially the auxiliary power grade,
and polarity, other wise will damage the product.
2. Pay attention to the wire connection; wrong terminal connection will cause
malfunction of the product and even damage the product;
3. Don’t dismantle the product, and carry with care to avoiding bump and fall of the
product;
4. If the product has been using under the environment with strong magnetic field
interference, please pay attention to the shield of input wire, and the output signal wire
should be as short as possible. For product intensive installation, the space between
each product should not be smaller than 10mm.
5. Only use identified terminals.
6. There is no lightening strike prevention circuit design in this product. For out door and
hazardous environment using, please add protective alternatives.
7. This product uses fire prevent ABS crust, its temperature withstand is only limited as
+85℃, higher than this limitation will cause the product deformation. Please use and
store carefully.