Mianyang Weibo Electronic WBI414N21 User manual

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Mianyang Weibo Electronics Co. Ltd
No.98 Youxian East Road, Youxian District, 621000 Mianyang, Sichuan, P. R. China.
Tel: [phone] Fax: [phone]
www.wbsensor.com [email protected]
2
2
WBI414N21 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
Product Description and Application

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Mianyang Weibo Electronics Co. Ltd
No.98 Youxian East Road, Youxian District, 621000 Mianyang, Sichuan, P. R. China.
Tel: [phone] Fax: [phone]
www.wbsensor.com [email protected]
4
4
Measuring current input (through window)
Connecting Terminals Definition Drawing
Key Technical Data:
1. Input: AC 30A~400A;
2. Output: DC 0~20mA, 4~20mA;
3. Accuracy : 0.2%;
4. Linear Range: 0%~120% nominal input ;
5. Responding Time: ≤300ms;
6. Overload Capacity: 20 times of nominal input, hold for 1s, interval of 300s, repeat 5 times;
7. Load Capacity: 6V;
8. Isolation Voltage: AC 2.5kV, 1 minute;
9. Frequency Range: 25Hz～5kHz;
10. Auxiliary Power: DC +12V, +15V, +24V;
11. Static Current: ≤15mA;
12. Output Ripple: ≤10mV (Effective value. When the output load is 250Ω);
13. Ambient Temperature: -25℃～+70℃;
14. Weight: 120g;
15. MTBF(mean time between failures): ﹥50000hours;
16. Drifting by Temperature: 150ppm/℃;
17. Surge (Surging) Immunity: GB/T 17626.5;
18. Electrostatic Discharge Immunity: GB/T 17626.2;
19. Electric Fast Transient Burst Immunity: GB/T 17626.4.
DC current output (Iz)
1
3
4
5
6
2
Grounding of working power and output（GND）
Positive electrode of working power（+E）

Mianyang Weibo Electronics Co. Ltd
No.98 Youxian East Road, Youxian District, 621000 Mianyang, Sichuan, P. R. China.
Tel: [phone] Fax: [phone]
www.wbsensor.com [email protected]
5
5
Instruction of Installation and Use
1. Installation: DIN Mounting Rail structure, easy installation, suitable for type NS35/7.5,
NS35/15 or European type EN50022(standard lead rail).The installation steps are as below:
①Hook the card slot of the sensor on the installation lead rail;
②Pull the spring pin down;
③Rotating sensor, make it mount on the installation lead rail;
④Release the spring pin, make sure the sensor is fixed on the lead rail.
2. The sensor has been calibrated according to the Product Standard ,before out of the factory.
After correct wiring, it can be powered and used immediately. The red indicator lights up after the
power is added. When it is measured accurately, please sampled after the preheating 3 minutes.
3. The sensor has no special requirements for auxiliary power. The ordinary 7800 series 3
terminal voltage regulator can be used for self-control, multiple sensors can share one auxiliary
power which's isolation voltage is required ≥AC2000V, DC output ripple ﹤10mV.
4. Less than AC 10A of the current measurement can use ampere-turn input mode, at this point,
the resolution of the sensor is increased and measuring range is narrowed. Other technical index
are not affected.
5. Please pay attention to the positive direction of the input signal, According to the Connecting
Terminals Definition Drawing, when the direction of current specified in the diagram is perforated,
the "Iz" output is in phase with the input signal, otherwise the phase difference is 180 degrees.
6. Iz output is based on the design of maximum 250Ω standard load resistors. When the load
resistor RL is less than 100Ω, the reducing resistor Ro should be connected into the current-output
loop circuit of the sensor, so that the sum of the load resistance is between 100Ω and 250Ω.
Caution:
1. Pay attention to the auxiliary power information, especially the auxiliary power grade,
and polarity, otherwise will damage the product.
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Sensor
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User
System

Mianyang Weibo Electronics Co. Ltd
No.98 Youxian East Road, Youxian District, 621000 Mianyang, Sichuan, P. R. China.
Tel: [phone] Fax: [phone]
www.wbsensor.com [email protected]
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6
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.