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Related Manuals for GDZX ZXHL-100P
Summary of Contents for GDZX ZXHL-100P
- Page 1 ZXHL-100P Contact Resistance Tester...
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Page 2: Table Of Contents
Contents Ⅰ、product description........................- 2 - Ⅱ、Product Usage.......................... - 2 - Ⅲ、Features............................ - 2 - Ⅳ、Technical Specifications......................- 3 - Ⅴ、Panel structure..........................- 3 - Ⅵ、working principle........................- 4 - Ⅶ、Method of operation.........................- 5 - 1. LCD Description........................- 5 - 2. -
Page 3: Ⅰ、Product Description
Ⅰ、product description Once the power system commonly used conventional QJ44 type arm DC bridge for measuring the contact resistance, and such bridge only test current at mA level, it is difficult to find transformer coil conductor cross-sectional area reduced defects. When measuring the high voltage switch contact resistance of the conductive circuit, due to the impact of oil film between the contact and the oxide layer, the measured resistance value is too much times larger that can not reflect the real value of the contact resistance. -
Page 4: Ⅳ、Technical Specifications
5. High quality: key parts are imported components, with temperature compensating circuit in perfect design which eliminates the effect of ambient temperature 6. Powerful: several modes of currents for option 7. Friendly man-machine interface: enter the data by rotating mouse, easy and convenient, can set the data, time by yourself, save and print the test results in time. -
Page 5: Ⅵ、Working Principle
Figure 1 panel layout 1、printer 2、Grounding 3、RS232 Interface 4、Power socket 5、Power switch 6、Reset 7、Rotating mouse 8、Contrast control 9、LCD screen 10、Current output I- 11、Current output V- 12、Measuring input V + 13、Measuring input I- Ⅵ、working principle The instrument uses the current-voltage testing theory, also known as four-wire method testing technology, schematic block diagram shown in Figure 2. -
Page 6: Ⅶ、Method Of Operation
measured. Voltage signal U is sampled on the standard resistor R , after filter amplification processing, is sent to the AD convertor and changed to digital value, then get the current value I, see equation (1). Similarly, the sampled voltage signal Ux measured on resistance Rx after filtering, multiple-stage amplification process, AD conversion, changes into digital value, by the formula (2) can calculate the resistance value Rx. -
Page 7: Power
(a)Four Terminal Wiring Diagram (b)Wrong Connection Figure 3 four-terminal wiring diagram Note: ① Tighten the connection between the instrument panel and test line. It should not be loosening. ② wiring should be in accordance with the four-terminal method, the current line should be on the outside, the voltage line to be caught in the inner side, current and voltage must be of the same polarity. -
Page 8: Test Results
Figure 5 Test menu interface In the "test current" position click mouse to switch the current value between 50A, 100A; rotate the mouse to the "test time" position, using a rotary mouse input data, you can set the test time. Note: The test time setting range: 5s ~ 599s, when beyond the scope, the system returns to the default value: 10s. -
Page 9: Save The Test Results
due to the current impact and capacitor charging, the test results unstable, 5s later the test results will be stabilized, the user can record data. When time is up, current output will stop automatically Click on the "retest" item, the system repeat the test according to preset parameters Click "Save"... -
Page 10: Records Check
Figure 9 Save Test Results Use the mouse to enter the sample number, click "Save" item, the test results will be saved to the I C memory, interface shown in Figure 10 ; click on "Back" key, the system returns to the previous screen. - Page 11 Figure 12. Figure 12 Records check Click the "↑ ↓", rotating the mouse, select the record number to be queried, as shown in Figure Figure 13 Records check on the selected record, click the mouse to enter operation interface, shown in Figure 14. Figure 14 Records check There are functions like “delete”...
- Page 12 Figure 15 Search record Click the "Print" button to print this record, print the results shown in Figure 16. Click "Back" to return to the previous screen. Figure 16 Print Report Click the "Delete", the system prompts "Delete?", Shown in Figure 17. Click "OK" to delete this record;...
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Page 13: Time Set
records; click "Cancel" to return to the previous screen. Figure 18 Are Empty Click on "Back", the system returns to the main screen. 10. Time set Click on "Time Set" and enter "time" interface, shown in Figure 19. In the main interface. Figure 19 time setting Move the cursor to the position of the date and time that need modify, use the mouse to enter the correct date and time values, click "Save", the system will save the newly set date, time and... -
Page 14: Ⅷ、Precautions
Figure 20 Online Communication 12. After the measurement is completed, disconnect the power switch, put back accessories to the package. Ⅷ、Precautions 1. Please read the instructions carefully before using the instrument. 2. Please connect the wiring in accordance with the instructions. 3. -
Page 15: Ⅹ、Symptom And Exclusion
Ⅹ、Symptom and exclusion Symptom Troubleshooting Check whether connect with the AC power supply Nothing happens when turned Check the power cable on, the LCD screen no display Check if the fuse has been burned inside the base Check whether the measured resistance value is too high When testing the resistance Check the voltage input cable is connected to the inner... -
Page 16: Appendix I: Contact (Loop) Resistance Basics
Appendix I: Contact (loop) resistance Basics 1. What is the contact resistance? Contact resistance is additional resistance static contact with each other when in contact with the movable contact that appears. 2. The circuit breaker contact resistance which several parts? Shrink resistance static contact resistance of the contact portion and the surface is composed of two parts move. - Page 17 Appendix II: Circuit breaker conductive contact resistance standard reference value Each phase contact resistance Each phase contact resistance model model （μΩ） （μΩ） SN1-10 <95 DW1-60G SN2-10G SW1-110 SN4-10 50—60 SW2-110I SN4-20 50—60 SW3-110 SN4-10G SW4-110 SN4-20G SW6-110 180—220 SN5-10 SW2-220 SN6-10 SW4-220 SN10-35...
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