Current balance tester

ZJ-1 type flow tester

Zhuhai Han Caiqiang Electric Measurement and Control Equipment Co., Ltd.

        Address : No. 8 , Pinggong First Road, Nanping Science Park, Zhuhai, Guangdong, China            

Telephone : 0756-8699661  Fax: 0756-8699662  Post Code: 519060

             Zhuhai-hancai@163.com        www.zhhancai.com

ZJ-1 type flow tester

one. Product introduction  

                     ZJ - 1

                                 No.

                                 Mean flow tester

                                 DC                     

The composition of ZJ-1 type flow tester:

1.      ZJ-1 type flow tester .

2.      ZDY-J type currentsharingsensor (the same number of rectifier components within the rectifier ).

3.      Special cable .

4.      Background computer ( optional ) .

When the high-power rectifier device is in operation , if the rectifier has a high current-sharing coefficient ,it can relatively prolong the service life of the components and improve the rectifier efficiency , and can also reduce the occurrence of faults. The function of the ZJ-1 type current sharing tester produced by Zhuhai Hancai Strong Electrical Measurement and Control Equipment Co., Ltd. is to measure the current value of each rectifier thyristor or diode conduction of the rectifier under the operating condition of the rectifier, so as to understand and improve at any time. Power rectifiers provide a direct basis for the current balance coefficient. The ZJ-1current sharing tester and the ZDY-J current sharing sensor manufactured by Hancai Strong Electrical Measurement & Control Equipment Co., Ltd. are used in combination, and their functions are as follows.

1. You can display the average and peak value of the on-state current of each component on each rectifying arm and you can set the alarm.

2. It can show the waveform of the conduction current of each component on each rectifier arm.

3. Can view historical data, with communication and printing capabilities. Each flow tester can be networked with computers. The average value, peak value and current sharing coefficient of each rectifier element current can be displayed on the background machine; waveform diagrams and bar graphs can be displayed.

4. The ZDY-J current sharing sensor is installed on each element branch of the rectifier arm, and the current value of each element is measured, and the signals are collected into the current sharing tester display.

two. Technical Parameters

(A) The flow tester

1. Model:            ZJ-1    

2. Current acquisition accuracy:    1%

3. Current acquisition resolution:  0.5%

4. Current acquisition interval :       640ms ( between arms )

5. Tube current waveform acquisition points :   250 points /40ms

6. Adjacent channel interference :        <0.5%

7. Number of rectifier arms (up to):         12      

8. Number of each arm element (up to) :      12

9. Each arm element range : 1000A   1500A   2000A   2500A    3000A   3500A   4000A 5000A                          

10. Display :            monochrome 320*240

11. Alarm record storage :       650 overflow coverage , save for 2 years

12. Alarm output :           4 normally open    AC220V   3A.   DC220V   0.4A

13. Host inquiry time :       <40 ms .

14. Communication Interface :           RS-485     9600   bps

(two) the flow sensor

1. Model:      ZDY-J type

1. Accuracy :              0.5%

2. Response time : 10uS           

3. Current Range : 1000A 1500A 2000A 2500A 3000A 3500A 4000A 5000A                             

4. Output signal :            4-20mA

5. Working power:           DC12V

three. installation method

    The housing of ZDY-J current sharing sensor is made of flame-retardant insulation material and can be directly clamped on the copper plate (or aluminum plate) at the output end of each rectifying element. A ZDY-J currentsharing sensor is installed at each rectifier element in the rectifier cabinet , and its output signal is collected by a special shielded cable to the ZJ-1 current sharing tester. ZJ-1 type flow tester can be installed in the rectifier cabinet or control room. Multiple current-sharing testers can also be networked with computers for centralized management.

Figures:

Automatic flow tester

ZDY-J type current sharing sensor outline

ZDY-J type current sharing sensor appearance diagram (one for each rectifier device)

ZJ-1 Current Balancer Outline Drawing

ZJ-1 balancer dimensions drawing

ZJ-1 type flowmeter rear cover pull layout

Single flow tester working principle block diagram