Cable Fault Tester Supplier Buying Guide

Cable Fault Tester Supplier Buying Guide

2021-11-03
NOYAFA
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Cable fault tester supplier is elaborately crafted and processed by SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED to ensure that no flaw can be found in the product. The product is found to not only make the firm commitment to its continued flexibility but also promise strong toughness, in which way the product will never suffer from damage accidents and customers will count on us for the great quality of the product after years of utilizing the product that still stays intact and functional. The reputation and competitiveness of NOYAFA branded products have raised apparently in recent years. 'I choose NOYAFA and have been consistently happy with the quality and service. Detail and care are shown with each order and we sincerely appreciate the professionalism that is exhibited through the whole order process.' One of our customers said.Our experienced design team can better help to meet customized needs on Cable fault tester supplier or any other product from Best Cable Tester Supplier in China _ Noyafa. Customers' specific logo and design are accepted.
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Follow the Cable Fault Tester Supplier to Deeply Understand the Cable
Follow the Cable Fault Tester Supplier to Deeply Understand the Cable
The lead of the motor is not only related to the rated voltage of the motor and the open circuit voltage of the rotor of the wound rotor motor, but also directly related to the current carried by the motor winding and the actual service condition of the motor. The selection of lead specifications should first be determined according to the withstand voltage value. The cable has a withstand voltage range. This rule must be followed when selecting. Below, the supplier of cable fault tester will take you to have an in-depth understanding of cables. Select the lead of corresponding voltage level according to the voltage requirements of the motor. The voltage level of the lead shall not be lower than the rated voltage of the motor winding. For example, for 10kV and 380V motors of high-voltage motors, the voltage value of the cable is very different. In addition, besides the voltage and current requirements, the insulation grade of the cable of the motor lead is also very important. According to the insulation grades of class B and h, the insulation heat resistance of the motor is different, and the material of the insulation material is also different. It must be noted that if the class B lead is used in the class H insulated motor, the possibility of lead damage and ground fault is very high. The cable fault tester supplier interprets the provisions of motor lead in the national standard: 1. Determine its necessity according to needs. According to the standard, if the motor has a power cord, or in order to facilitate connection with other equipment, provide a guide cord extending out of the motor base and a plug connecting the power supply line if necessary, the cord and plug shall comply with the provisions of the relevant standards of the product or the relevant standards of such equipment. Especially for small motors, winding wires can be used to connect with equipment or terminal blocks, but for motors that must undergo relevant insulation treatment, soft wiring must be adopted, and the provisions of terminal blocks must be added. Unless grounding is not required, these flexible wire bundles must have grounding conductors. Leads (including ends) require different colors and markings. Most motor manufacturers use three-color leads for three-phase motors, and some motor manufacturers use labels to distinguish them. However, for grounding wires, they are adopted according to standards. 2. Voltage and current requirements. The standard stipulates that the rated voltage of the guide flexible cable must be under the maximum working voltage of the motor, and its load flow must be at least equal to the load current of the service factor or 125% of the full load rated current, whichever is the larger. The flexible cord insulation shall withstand the working frequency withstand voltage test of the circuit. 3. Protection requirements for leads. In addition, there are measures to eliminate the possible tension, or guide the flexible cable (power cord) not to expose the motor. An insulating protective layer and clamping device are set at the outgoing part of the flexible cable to prevent the external tension from being transmitted to the internal wiring and prevent accidents caused by the rotation and displacement of the flexible cable. 4. Limitations and insulation requirements. In addition to other protective measures, the introduction of flexible cables into the motor shall be prevented. The clamping device for clamping and fixing flexible cables is made of insulating material, made of metal material and requires insulating lining.
How to Use a High Voltage Detector Tester: 5 Key Tips You Should Know
How to Use a High Voltage Detector Tester: 5 Key Tips You Should Know
Any meter that can check voltage, current and resistance is called a multimeter. To prove that the electrical testing is new to us, we often ask our residents if they can teach an apprentice how to properly use a voltmeter or multimeter. Once you understand how to use a multimeter correctly, you can proceed to troubleshooting and troubleshooting electrical problems, checking sockets, checking continuity and more.Proximity to the voltage detector is a good first test, followed by direct contact with the meter. The voltage is relative to the two points at which it is measured by the meter, so a voltmeter must be connected to two points in the circuit to get a good measurement.As part of the test, the 70E requires a conductor circuit with phase phase phase and phase to ground. Note that this requirement does not apply to medium to high voltage systems, so proximity voltage detectors are the preferred test method.Non-contact voltage testers are the safest way to ensure that the current touches the wire. They light up and make no noise, but they can get very close to hot electric wires, especially those covered with plastic insulation.Select a low or high voltage level to verify the presence of a voltage contact with an energy-rich conductor. If you hear continuous chirping or see a series of flashes, confirm that the tester has detected voltage.Test your battery at every stage and measure your readings to optimum voltage. These tips lead to the use of a test circuit that you can see when working with your RV batteries.Some manufacturers of voltage sniffers recommend holding the tester with bare hands and keeping it close to the body. To use a two-pronged voltage tester, place a cable in a metal box containing the ground wire and a solid copper wire, and the other cable you are testing, but never use a two-pronged multimeter. The measurement of the signal allows calculations without the stress of a CT socket tester or circuit analyzer (practical socket voltage testers are ideal for checking voltages and showing if a socket wire is missing a wire, such as the grounding wire).Like any technology or device, your digital multimeter has a lifetime. A visual inspection can be carried out to check and ensure that your multimeter is working properly. Inspection of light must be carried out with electrical energy Floor inspection facilitates the repair of motor vehicles Inspection of a lamp is simple and inexpensive, especially for 12 volt vehicles.These multimeters have the same properties as a voltmeter and check current, resistance and continuity. At the top of the charts in the best-selling multimeter category, Kaiweets Digital Multimeter will do the work for you. It features accurate measurements of AC and DC voltage, AC / DC current and resistance, continuity, frequency, capacitance, diodes, liquid temperature, battery control and shutdown measures.If you do not have a multimeter, you can use a voltage detector instead of a voltmeter or a continuity test instead of an ohmmeter. User-friendliness has little to do with the multimeter that holds your readings for you, as you cannot see what you are working with on the screen. Use it instead to tell you if the white or black cable is in the inverted socket, or if the underground cable is inserted into the box or plugged into the socket.As soon as you receive a reading from your meter, check if it has a switch called DC. Be sure to follow the instructions to get the maximum amount of current that the meter can handle. To see how this works, let's look at a few examples to show how the meter is used.Use a low-voltage proximity tester to measure the circuit to be tested when the low-impedance voltage tester is connected. Figure 2 illustrates the final reading of the voltage displayed by the proximity testers and the voltage displayed by the tester. The tester measures the voltage (Figure 3) and if it is several volts above or below, it indicates the presence of a voltage, and if there is a voltage in the circuit, a power supply must be found before moving on.If the circuit voltage is lower than normal and the current is high, a harmful spark can occur the moment the last meter probe connection is established. In the multimeter version, the zero ohm resistance is tested with the probe tip (red) and the probe is plugged into the red current measuring socket. When the voltage is measured in this mode (red LED plugged into red V socket) and many mega ohm resistors are tested from the probe tip, the voltmeter is designed to be close to infinite resistance, so that it does not draw any significant current from the circuit's tested circuit.We used the voltage sniffer on a metallic light in a kitchen or sink to check if it was grounded. When the luminaire is not grounded, a hot wire comes into contact with it and the wire will supply the metal with energy, making an electric shock a hazard. The voltage sniffer found no power cables grounded in the metal wire.When using a voltage detector the following checks should be carried out: Check for optical damage, third party labels and indicate the date of the next routine inspection. Check whether the maximum permitted voltage range is can be used depending on the voltage rate of the power supply system (in mV / hV) (Note: 2 test ranges are possible with KP-Test 5 Dual Voltage Detektors as indicated by the number of green LEDs ). The voltage ranges available, the ATEX approval, the choice of tip and antenna shape vary according to the application of the volt stick, but the right product ensures safe work on site.I call it a voltage sniffer but the technical name for it is a capacitive voltage sensor. Inspectors use voltage sniffers for a few different things, so it's important to have one or two spare parts ready. Voltage sniffers use black magic to determine whether wires are alive or not, and they are 100% reliable at all times.
How to Pay for Lc/sc/fc/st Fiber Optic Cable Tester for Troubleshooting?
How to Pay for Lc/sc/fc/st Fiber Optic Cable Tester for Troubleshooting?
At NOYAFA, we support the idea of customers arranging the lc/sc/fc/st fiber optic cable tester for troubleshooting shipment by yourselves or by your assigned agents. If you have been working with the assigned freight forwarders for years and totally trust them, it is advisable that your goods can be entrusted to them. However, please know that once we deliver the products to your agents, all the risks and responsibilities during the cargo transit will be transferred to your agents. If some accidents, such as bad weather and poor transportation condition, lead to cargo damage, we are not responsible for that.With over lc/sc/fc/st fiber optic cable tester for troubleshooting years of experience servicing lc/sc/fc/st fiber optic cable tester for troubleshooting, we take pride in making sure your investment is protected and performing optimally at all times. With carefully selected materials, our lc/sc/fc/st fiber optic cable tester for troubleshooting have received much fame until now. lc/sc/fc/st fiber optic cable tester for troubleshooting's high performance can meet the requirements of many special industries for lc/sc/fc/st fiber optic cable tester for troubleshooting.Once you try us, we're sure you'll be back for more! Get more info!· Related Questions:1. May NOYAFA offer warehousing services?NOYAFA, as one of the strongest enterprises among similar competitors, holds a completed and fine warehousing service system. We pay attention to the customers’ requirements and communication with our staff working in the warehousing services department. We have a complete infrastructure construction in the warehouse and reasonable warehouse space allocation and efficient utilization rate of warehouse space, which can benefit the administrator to store the products. And all those can ensure that we can provide an extraordinary experience for our customers, and this kind of service can also build our company’s brand. ——————— 2. Can our logo or company name be printed on lc/sc/fc/st fiber optic cable tester for troubleshooting?The customized logo is available for lc/sc/fc/st fiber optic cable tester for troubleshooting. We offer professional design and creation of high-quality products and personalized ideas. We'll affirm the layout with you before manufacturing. ——————— 3. What kind of packing is provided for lc/sc/fc/st fiber optic cable tester for troubleshooting?NOYAFA has some general packaging guidelines that will help you prepare your package for shipping. Please consult our Customer Service for detailed information. We ensure the package we choose is the most suitable for your items. We are passionate about our service, and we take the responsibility for what we pack very seriously. ——————— 4. What are NOYAFA shipping modes?At NOYAFA, there are numerous options for delivering lc/sc/fc/st fiber optic cable tester for troubleshooting. When determining the form of transportation, the cost, the urgency of the shipment, the value of the goods being shipped as well as the volume and weight of the goods need to be evaluated. Air freight is a critical mode of transport. It serves markets and supply chains that demand speed. Land shipping, probably one of the earliest forms of transporting cargo, can transport goods of almost any size. Rails and trucks are usually the vehicles used to transport the goods. Ocean freight is less expensive and the most popular method of shipping goods. It is suitable for a wide range of products with long lead times. We will prioritize your needs and choose the best method of transport.
Introduction of Test Composition of Live Cable Fault Tester
Introduction of Test Composition of Live Cable Fault Tester
Cable fault tester is a commonly used cable fault detection equipment. This equipment is used with a variety of cable fault detection. Its stable performance and accurate detection make the cable fault detection more comprehensive. The work efficiency of inspectors has been greatly improved. Today we mainly explore the composition of live cable fault tester. Test composition of live cable fault tester: 1. Live cable fault tester is composed of the following parts: 1. Instrument host: cable fault flashover tester, referred to as flashover tester for short. Cable path test signal source, referred to as path tester. Cable fault point / path meter receiver, referred to as point meter. 2. High voltage accessories: high voltage pulse capacitor. The utility model relates to an AC / DC dual-purpose high-voltage test transformer. High voltage test transformer operation box. 2、 The test functions of the cable fault tester mainly include: 1. Purpose: it is suitable for low resistance fault test, short circuit fault test, open circuit fault test, high resistance leakage fault test and high resistance flashover fault test of various power cables with different sections and media, high frequency coaxial cables, municipal cables, street lamp cables, ground buried wires, etc. Specifically, there are the following types: (1) testable cables are equivalent according to voltage: low voltage cables and high voltage cables. (2) Testable cables can be divided into: power transmission cables; Control cable; Street lamp cable. (3) The testable cables can be divided into: directly buried cables, cables laid in cable trenches, overhead cables and more than two parallel directly buried low-voltage wires. (4) Testable cables can be divided into: short circuit fault; Phase failure; Low resistance fault; High resistance leakage fault; High resistance flashover fault is described in detail after fault classification. (5) If there is a cable identifier, we can find the cable we are looking for from multiple cables buried in the cable trench, that is, the cable identifier. (6) Both fault test and cable identification are conducted for power-off cables, and fault test cannot be conducted for live running cables. 3、 Introduction to the test principle of cable fault tester: 1. The host of this set of instrument is a host, which is mainly used for cable fault test. 2. It is a rough measuring instrument for cable fault distance, which can measure the approximate distance from the fault point to the cable test end face. 3. The lightning meter can measure the cable length and the propagation velocity of electromagnetic wave in the cable. The test principle of lightning meter is radar reflection method, also known as pulse reflection method. Single end test distance of lightning meter: 15km. Minimum test distance (blind area) of lightning meter: 15-20m. 4. Measurement error of cable fault tester: rough measurement error & plusmn; 1%, system (point) error & plusmn; 0.2m. In short, after accurately determining the fault point, dig a pit to find the fault point. 5. The principle of cable fault detector for finding cable path is to add electromagnetic wave signal to the tested cable and receive the signal of finding cable path through the pointing instrument. The minimum characteristic of receiving electromagnetic signal on the ground directly above the cable is used to determine the buried position of the cable.
Characteristics and Principle of Cable Fault Locator
Characteristics and Principle of Cable Fault Locator
Cable fault locator is a comprehensive cable fault detection instrument, which can test the faults such as high resistance flashover fault, high and low resistance grounding, short circuit, cable disconnection and poor contact. The cable fault locator is equipped with an acoustic pointing instrument, which can be used to accurately determine the * * position of the fault point. It is especially suitable for testing power cables and communication cables of various models and different levels of voltage. Adopt a variety of detection methods and apply contemporary * advanced electronic technology achievements. Using computer technology and microelectronics technology, it has the characteristics of high intelligence, complete functions, wide range of use, accurate test, convenient use and so on. The host of the cable fault tester is used to measure the nature and total length of the cable fault and the approximate position between the cable fault point and the test end. The cable fault locator determines the * * position of the cable fault point based on the approximate position of the cable fault point determined by the host of the cable fault tester. For buried cables with unknown direction, a pathfinder shall be used to determine the underground direction of the cable. The basic method of power cable fault test is to apply high-voltage pulse to the fault power cable to produce breakdown at the cable fault point. When the cable fault breakdown point discharges, it generates electromagnetic wave and sound at the same time. Dear customers: the company also has cable fault detector, buried cable fault detector and underground pipeline detector products. You can call the company's service phone through the web page to learn more product details. Perfect service is our pursuit. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
Location Method of High Resistance Damage in Power Cable Line
Location Method of High Resistance Damage in Power Cable Line
In order to preliminarily determine the high resistance damage in power cable lines, the combination method of high voltage reflection method is usually used: pulse arc method and vibration discharge method. In this paper, we will consider the main ideas embedded in these methods and how they work. In addition, we will discuss the equipment to implement these two methods. 1、 Pulse arc method (ARM) is used to determine high resistance damage. The main idea of pulse arc method is to use a special high-voltage pulse generator. For example, in the arc cable generator of power cable, oil first creates conditions for the generation of high resistance defects and causes short-term arc (breakdown). According to the magnitude of the leakage current and the power of the current source, use one of two ways for the generator to act on the cable line: 1. Smoothly charge KL's own capacity (cable) from the generator current source until breakdown occurs. This method can be used if the leakage is so small that the power supply of the high voltage pulse generator is sufficient to charge before breakdown. For defects with serious leakage, this method is not applicable. 2. Charge the built-in capacitor of the generator to the required voltage (not exceeding the test standard), and then discharge the cable instantaneously. In this case, the high-voltage pulse propagates in the cable, which will lead to failure when it reaches the location of the defect. This method can be used to search for defects on cable lines with serious leakage. In both cases, the use of inductors integrated in the generator will delay the arc combustion time. The current pulse from the breakdown (propagating from the defect to the input of the generator) triggers a synchronous circuit that starts the low-voltage sounding through the cable fault locator (also known as the cable fault tester). The physical characteristics of the arc have low resistance, and the detection pulse of the cable fault locator is also reflected from medium and low impedance defects (short circuit). Advantages of pulsed arc method the pulsed arc method (ARM) for determining high resistance damage has several advantages. This is a non-destructive method, because unlike combustion, the impact of high voltage on the cable is short. Unlike combustion, this method will not reduce the cable parameters as a whole, and will not cause new damage where the insulation resistance is still within the normal range. Arm is actually a high-precision method, because the measurement is actually carried out by pulse method. 2、 The vibration discharge method (ice / attenuation) should deal with high resistance damage. The vibration discharge method is used to find damage on a long cable line, or when the pulse damping of the underground cable fault locator is too large for some reason to apply the pulse arc method. The vibratory discharge method allows you to locate most faults that can be detected using the pulsed arc method, but usually reduces accuracy. It should be noted here that the function of the cable is not displayed when operating by the vibration discharge method. Current oscillation discharge method (current fluctuation method, ice) when the wave current method is used, the oscillation circuit is formed by the system: capacitor on the source side - Cable - low transition resistance (or arc) at the defective part. When the method of vibration discharge through current is used, according to the leakage current value and the power of the current source, here, as with the pulse arc method, one of the two methods of exposing the cable to the generator is used: 1. Smoothly charge the CL capacitor from the generator current source until breakdown occurs. This method can be used if the leakage is so small that the power of the current source is sufficient to charge before breakdown. For defects with serious leakage, this method is not applicable. 2. Charge the built-in capacitor of the generator to the required voltage (not exceeding the test standard), and then discharge the cable instantaneously. In this case, the high-voltage pulse propagates in the and reaches the defective part, resulting in breakdown or large discharge current. This method can be used to search for serious defects. The discharge current pulse returned to the source will charge its capacitor, which in turn. The wave reaching the defect may cause a discharge in it again (in this case, its polarity will change), or if a second discharge does not occur, it will reflect with the same polarity and repeat the process again until all the energy of the initial pulse disappears. These vibrations are displayed on the screen of the cable fault locator connected to the cable through the inductive sensor.
Operating Instructions for Live Cable Identifier
Operating Instructions for Live Cable Identifier
1. Connect the transmitting source: the live cable identifier inserts the red and black wiring plugs of the transmitting caliper a into the two red and black wiring posts corresponding to the transmitting source, and clamps the transmitting caliper a on the identified cable. The arrow on the transmitting caliper a points to the cable terminal. Both ends of the identified cable shall be reliably grounded. For cables that do not operate, the core wires at both ends can also be grounded. 2. Turn on the power switches of the transmitting source and receiver to check the direction: on the identified cable two meters away from the transmitting caliper, clamp the receiving caliper B to the cable, and the arrow on the caliper must point to the cable terminal. Then check the current direction and test connection direction. At this time, the pointer of the receiver ammeter must deflect to the right, and there is an audible and visual prompt at the same time. If the arrow of the receiving caliper B points to the transmitting source end, there will be no audible and visual prompt, and the pointer of the current meter will deflect to the left. Remember the deflection direction of the receiving caliper gauge. 3. Identification: at the identification point, use the receiving caliper B to identify each cable. During identification, the arrow on the receiving caliper must always point to the terminal direction of the cable, and the cable shall be clamped one by one. On the identified cable, the current meter pointer of the receiver must be deflected to the right, and the audible and visual alarm prompt shall be given at the same time. On other cables, the pointer of the receiver current meter must deflect to the left without audible and visual alarm. The pointer of the current meter of the receiver deflects to the right, and the audible and visual alarm prompt is the cable to be searched and identified. This test result is unique. That is, no matter how many cables there are in the cable trench, when each cable is identified with the receiving caliper B, only the receiver current meter pointer on one cable (the cable to be found and identified) deflects to the right and gives an audible and visual alarm. Dear customers: Hello, our company is a high-quality development group with strong technical force, providing users with high-quality products, complete solutions and superior technical services. The main products are underground cable fault tester, cable fault tester, cable fault tester, etc. The enterprise adheres to the tenet of building a business in good faith, keeping the business with quality and developing the business with enterprising. It continues to climb new peaks with a firmer pace and make contributions to the national automation industry. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
Structure of Mine Cable Fault Tester
Structure of Mine Cable Fault Tester
1. The mine cable fault tester is composed of control part (low voltage) and high voltage rectifier, discharge and test part. Sufficient safety space shall be reserved between high and low pressure room, high and low pressure room and shell. 2. In order to ensure the safety of equipment and personnel, special personnel must operate with keys before high-voltage startup. 3. During each flaw detection or cable test, it can ensure that the high voltage rises slowly from the zero position, with the shape of high and low voltage limit. The pressure rise or fall process is controlled by the button, the voltage rise and fall rate is stable, and the operation is safe and simple. 4. The DC withstand voltage test time can be automatically carried out after digital (or manually controlled), and the test time is accurate and reliable. 5. The leakage current can be measured at any time according to the needs of the withstand voltage test process. 6. The mine cable fault tester has over-current and short-circuit protection, startup warning and over-current protection. 7. The control panel is equipped with power switch, high-voltage start, high-voltage stop, step-up, step-down and other switches or buttons, voltage withstand test, digital time timing relay, etc. 8. There are high voltage, leakage current, low voltage total current and other measuring meters on the display board, power supply, high voltage, timing and other indicator lights, curve observation window for ball gap discharge, etc. 9. Special high voltage discharge * * is equipped for discharge after each flaw detection or test to ensure safety. There is a grounding mark at the bottom of the box. Dear customers: the company also has cable fault detector, buried cable fault detector and underground pipeline detector products. You can call the company's service phone through the web page to learn more product details. Perfect service is our pursuit. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
Cable Fault Tester
Cable Fault Tester
Cable fault detector can be seen everywhere in our daily life. Cable fault detector plays a lot of roles. Cables on the road can divert people and vehicles. The guardrail beside the river can protect people from falling into the river. The guardrail beside the lawn can protect the lawn from being trampled by animals and people. Therefore, the role of guardrail is still great, The installation of guardrail is also very important. The installation of river guardrail needs special attention. Let's follow the traffic guardrail manufacturer to see how to install River guardrail. The river guardrail is a guardrail product installed next to the river to prevent pedestrians on the river road from falling into the river. The base to be fixed during the installation of the river guardrail can only be in the original position, which may cause the base to not be fixed and lose the significance of setting the river guardrail. Simply put, it is to install the guardrail at an oblique angle, hit 2 Road nails to fix the base, and the remaining 2 nail holes are used for later maintenance. After the base of the river guardrail is fixed, the column is installed. Insert the column into the base, and then install the expansion screw. After the screw is fixed, two people need to cooperate when tightening the screw. One person holds the column to keep it vertical. When tightening the screw, the other person can tighten the screws at both ends. In this way, the column and base are installed. The next step is to install the guardrail piece. The steel connecting sleeve connects the river guardrail and the column. This is generally fixed on the column before leaving the factory, so as to reduce the on-site operation process of constructors. Align the guardrail piece with the upper and lower connecting sleeves of the column, and connect the left and right accurately. The above is the introduction to the steps of installing the river guardrail. When installing the river guardrail, we should follow the steps strictly and master the installation skills of the river guardrail, so that we can make fewer mistakes in installation and ensure the performance of the river guardrail in the process of use. We are a professional guardrail manufacturer. If you need to buy our guardrail products, you can call us to communicate with us.
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