Comprehensive manufacturer of touch finger pressure measuring instrument

The SHCZ-26B isolation switch of this instrumentTouch finger pressure testerIt can also be used for the inspection of contact pressure in isolation switch manufacturers; Changing the shape of the pressure sensor can also measure the finger pressure of the circuit breaker.

The body resistance and contact resistance of parts such as wiring terminals, conductive tubes, and contact fingers have a large range and margin, and cannot directly reflect changes in contact resistance. They can only indicate the conductive circuit path. The experiment shows that the circuit resistance values of two pairs of contact fingers and four pairs of contact fingers are within the qualified range. Similarly, there was no significant change in the resistance value of the small circuit due to high finger pressure.

So, the requirement to measure finger contact pressure is just a piece of paper.

Comprehensive manufacturer of touch finger pressure measuring instrument

The isolation switch touch finger pressure tester is equipped with the "Circuit Breaker Data Analysis and Management Software Windows Chinese Version" software that is connected to a PC. The test results can be directly stored in the hard drive or output to various printers to print test reports, making on-site testing computerized. The switch touch finger pressure tester has * data analysis function, which can effectively analyze various indicators and parameters of the mechanical characteristics of circuit breakers. Custom addition program for instrument configuration speed, users can freely add various rigid opening and closing speed definitions according to their needs. Due to the fact that outdoor isolation switches are the most direct and severe electrical equipment exposed to the atmosphere and affected by environmental and climatic conditions, their operating conditions are relatively harsh and they are prone to mechanical or electrical failures. Especially the contact part of the touch finger is easily invaded by rainwater, dust, and harmful gases, resulting in poor contact and heating. The spring that provides pressure to the touch finger will anneal due to heating, causing the pressure to decrease. This further leads to a vicious cycle of heat generation and ultimately burns out the touch finger, causing accidents. During maintenance, attention is often only paid to replacing springs that have obvious failures or fractures, and it is impossible to judge and replace those springs with reduced pressure. As a result, during further operation, the distribution of current in each contact finger will vary due to different pressures, and the greater the difference, the more uneven the current distribution. After long-term operation, poor contact may occur and overheating may occur. The heating of the touch finger can lead to a vicious cycle, where poor contact between one touch finger can spread throughout the entire contact. At the same time, there are many isolation switches with adjustable finger pressure. If the pressure adjustment during maintenance is insufficient or there are differences in the adjustment pressure of each finger, the above phenomenon will also occur. Isolation switch touch finger pressure tester. Isolation switch is the most widely used high-voltage switchgear in the power system.

Comprehensive manufacturer of touch finger pressure measuring instrument

The produced instrument can also be used for the inspection of contact finger pressure in isolation switch manufacturers; Changing the shape of the pressure sensor can also measure the finger pressure of the circuit breaker. Please inquire in detail about how to measure. At present, the majority of maintenance personnel judge the contact quality of conductive parts by measuring their circuit resistance. If the circuit resistance is within the qualified range, the maintenance work of conductive parts can be successfully completed. In fact, the circuit resistance value given in the product manual is the value of the entire conductive circuit, including the body resistance and contact resistance of the wiring terminals, conductive tubes, contact fingers, etc. It has a large range and margin, and cannot directly reflect changes in contact resistance. It can only indicate the conductive circuit path. The experiment shows that the circuit resistance values of two pairs of contact fingers and four pairs of contact fingers are within the qualified range. Similarly, there was no significant change in the resistance value of the small circuit due to high finger pressure. In various maintenance procedures and standards, there are provisions for measuring the contact pressure of the touch finger. The recommended measuring tool is a spring scale. In practical work, measuring the contact pressure of the touch finger needs to be done at high altitude. Using a spring scale to measure pressure is not only inconvenient, inaccurate, but also unsafe. For some structures of isolation switches, the contact pressure of the touch finger cannot be measured by a spring scale at all (such as scissor type). So, the requirement to measure finger contact pressure is just a piece of paper. In response to the current maintenance status of the power generation and supply system, an intelligent tester for measuring the contact pressure of high-voltage isolation switches has been developed. As long as the sensor simulating the contact of the test clamp is opened at the contact position of each pair of contact fingers, it can display and remember the contact pressure of the contact fingers at this time. Effectively solved a major problem in measuring finger pressure. This instrument can also be used for the inspection of contact finger pressure in isolation switch manufacturers; Changing the shape of the pressure sensor can also measure the finger pressure of the circuit breaker. Especially the contact part of the touch finger is easily invaded by rainwater, dust, and harmful gases, resulting in poor contact and heating. The spring that provides pressure to the touch finger will anneal due to heating, causing the pressure to decrease. This further leads to a vicious cycle of heat generation and ultimately burns out the touch finger, causing accidents.

The isolation switch finger pressure tester only needs to open the sensor of the test clamp simulating the contact at each pair of finger contact positions to display and remember the contact pressure of the fingers at this time. Effectively solved a major problem in measuring finger pressure. This instrument can also be used for the inspection of contact finger pressure in isolation switch manufacturers; Changing the shape of the pressure sensor can also measure the finger pressure of the circuit breaker. We will take the example of a high-voltage isolation switch touch finger pressure tester. When purchasing, please pay attention to the following points:

1. Power supply voltage: AC220V, or powered by an internal lithium battery;

2. Measurement range: ≤ 1000 N Error: ≤ 1%;

3. Measuring diameter (finger opening distance): 5.5mm to 90mm;

4. Sensor signal line length: 10m.

Isolation switch touch finger pressure testertechnical indicators

1. Working environment: -10~40 ℃, ≤ 80% RH, atmospheric pressure 86~106kpa

2. 2. Power supply voltage: Internal lithium battery: ≤ 20W (preferred) AC220V ± 10% 50Hz ± 10%

3. 3. Measurement range: ≤ 1000N Error: ≤ 1% Reading ± 1

4. 4. Measuring diameter (finger opening distance): 5.5mm to 90mm, greater than 90mm (customizable)

5. 5. Built in lithium battery, power supply working time: ≥ 6 hours (customizable).

6. 6. Charging method: Connect the dedicated charger to the lithium battery charging interface on the panel for charging;

7. 7. Sensor signal line length: 10m

8. 8. Insulation resistance>2M Ω

9. 9. The dielectric strength power supply can withstand the 1.5KV power frequency voltage of the casing for 1 minute without flashover or arcing.