The DC resistance fast tester uses advanced switching power supply technology to display measurement results by dot matrix liquid crystal display. It overcomes the shortcomings of other similar products that are inconvenient to read by the LED display value in the sun, and has an automatic arc suppression function. The DC resistance test of the transformer winding is an indispensable test item for the transformer after the handover, overhaul and change of the tap changer. Under normal circumstances, measuring the DC windings of transformer windings and high-power inductive devices by conventional methods (bridge method and voltage drop method) is a time-consuming and labor-intensive task. In order to change this situation, the measurement time is shortened and the workload of the tester is reduced. It is specially used to test the DC resistance of inductive devices such as transformers, motors, transformers, etc. It can quickly make the test current reach a stable value, and the measurement time is greatly shortened. The DC resistance speed tester not only retains the high degree of automation and test speed of similar products. Advantages, but also overcome the shortcomings of the open-circuit measurement of similar products, the 220V power supply needs to be exchanged at the test site, and the operation is complicated. Developed 10A AC-DC dual-resistance speedometer, the test current is larger and the test value is more stable, and the protection measures are more perfect. It is an upgraded product of its kind.
Daily maintenance of the instrument
1. Within three months, due to the technical requirements of the instrument itself, it can be replaced unconditionally.
2. Free maintenance within one year, providing maintenance and technical services for life.
3. If there is a quality problem with the instrument, the maintenance plan will be submitted on the same day and it will be processed on site in time. Alternative instruments are also available to meet user needs.
4. Free on-site technical support and common knowledge training for instruments.
5. If the instrument malfunctions, please contact us in time to provide services for you.
Attachment 1: Panel printer change method
The printer equipped with the instrument has been installed with paper rolls at the factory. When the paper roll in the printer is used up, a new paper roll needs to be installed. The specific installation process is as follows:
(1) Remove the front cover of the printer.
(2) Remove the entire printer from the instrument panel, grasp the movable tongue on both sides of the printer with your hand pointing, and gently remove the entire printer from the instrument panel. Be sure to turn off the printer before removing the printer. Power supply.
(3) Remove the paper roll from the printer.
(4) Place the new paper roll on the paper roll and insert the paper roll into the guide groove of the printer without falling out.
(5) Cut the paper head into a cone.
(6) Turn on the power of the printer, press the SEL button to turn off the SEL indicator, then press the LF button to turn the machine head.
When the paper is fed into the paper inlet under the handpiece by hand, the paper will quickly enter the machine head until it is exposed from the front of the machine head.
stop. To expose it to a certain length, press the SEL or LF button again to stop feeding. Close the power supply, cover the front cover of the printer, and thread the head of the paper out of the exit of the front cover.
(7) Put the entire printer back on the instrument panel.
DC resistance tester usage:
A: DC power test:
Close the main power switch, and the corresponding indicator light is on. Press the "Start and Stop" button to test. After the test is finished, press the "Reset" button, the instrument will display "Discharge", wait for the instrument to return to the boot interface, turn off the main power switch, the corresponding indicator light goes out, then convert the test clip and test again.
B, AC power test:
Connect the AC 220V power supply, the "charge" indicator lights, and the main power switch is closed. The specific operation is the same as the DC power supply.
Special attention: After the test is completed, you must press the "Reset" button and other instruments to return to the boot interface before you can shut down for the next test.
Specific method of operation
â—‡The machine has three buttons: “Selectâ€, “OK†and “Resetâ€.
1, resistance measurement
After the instrument is turned on or press the reset button, it enters the initial state (1). At this time, the cursor pointer points to "resistance", directly press the "OK" button to enter the state (2), display the changing charging current and measurement time, automatically enter the state after charging is completed (3), display the resistance value, measurement current and measurement time, At this time, each time the "OK" button is pressed, the measurement result is stored once (the model with the printer prints the measurement result at the same time). Press the "Reset" button to exit the resistance measurement and enter the state (4) to display the discharge current. After the discharge is completed, it automatically returns to the initial state (1) to complete a resistance measurement.
2, number setting
Entering the device number helps to find the memory data. In the initial state (1), point the cursor pointer to "Settings" and press the "OK" button to enter the state (5) to display the current device number. Press the "OK" button again to enter the state (6), prompting to enter the new device number. At this time, press the "Select" button to make the current input bit from '0' to '9', and then cycle from 'A' to 'Z'. , find the desired number or letter and press the "OK" button to enter a digit, then enter the next digit in the same way, after entering the six digits, return to the state (5), display the newly entered device number. Press the "Reset" button to return to the initial state (1).
3, memory operation
In the initial state (1), move the cursor to "Memory" and press the "OK" button to enter the state (7), display the current total number of memory records, then press the "Select" button to enter the state (8), starting with the latest record The memory record content is displayed accordingly, NNNNNN indicates the recording device number, and MM indicates the MMth resistance value of the device. When the "OK" key is pressed to store the measurement result during the measurement process, the MM value is incremented by one. Each time a new device number is entered, the MM value is re-accumulated from 1. Pressing the "Select" and "OK" keys at the same time will clear all the data in the memory, and press the "Reset" button to exit the internal operation return status (1). The memory can store up to 120 measurements, and the oldest record will be overwritten after more than 120 times. The memory contents can be kept intact for a long time under power-off conditions.
Foshan Qiaotai Furniture Products Co., Ltd. , https://www.qiaotaifurniture.com