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Automatic Anti‑interference Dielectric Loss Tester | High Voltage Tan Delta Test Equipment
| Place of Origin | China Mainland |
|---|---|
| Brand Name | MINGYANG |
| Model Number | MY-JS |
| Minimum Order Quantity | 1 |
| Price | 3000USD |
| Packaging Details | carton |
| Delivery Time | 1 week |
| Payment Terms | D/P,T/T,D/A,L/C |
| Supply Ability | 100/Month |
Product Details
| Accuracy (Cx) | ±(reading×1%+1pF) | Accuracy (tgδ) | ±(reading×1%+0.00040) |
|---|---|---|---|
| Power Measurement Accuracy | ±(Reading×1.0% +2 Words), 0.2≤cosφ≤1 | Anti‑interference Performance | Frequency |
| Capacitance Range (Internal HV) | 3pF‑60000pF@10kV；60pF‑1μF@0.5kV | Capacitance Range (External HV) | 3pF‑1.5μF@10kV；60pF‑30μF@0.5kV |
| Tanδ Measurement Range | No Limitation, Resolution:0.001%, Auto‑identify Capacitance, Inductance, Resistance | Internal High‑voltage Output Range | 0.5kV‑10kV |
| Max Output Current | 200mA | Operating Ambient Temperature | -10℃ ~ 50℃ |
| Built‑in Printer | Mini‑type Thermal Printer | ||
| Highlight | Automatic dielectric loss tester,Anti-interference tan delta test equipment,High voltage hipot tester |
||
Product Description
Automatic Anti‑interference Dielectric Loss Tester | High Voltage Tan Delta Test Equipment`
Product Description
Dielectric loss measurement is a very basic method in insulation test. It can effectively detect the whole damp deterioration and partial defects of electrical equipment insulation. It is widely used in electrical manufacturing, installation of electrical equipment, handover and preventive testing. Measurement of dielectric loss of transformer, transformer, reactor, capacitor, bushing and arrester is the most basic method to measure their insulation performance.
2. The instrument adopts frequency conversion technology to eliminate 50Hz power frequency interference in the field. Even in the environment of strong electromagnetic interference, reliable data can be measured.
3. It is easy to operate with full touch LCD. Full touch LCD screen, super full graphics operation interface, each process is very clear, operators can use without additional professional training. The whole process can be measured by touch.
4. Storage data: It is equipped with a calendar chip and a large-capacity memory, which can save the test results at any time, view the historical records at any time, and print out. The current time and storage time can be displayed and printed at any time.
5. Scientific and advanced data management: Instrument data can be exported through U disk, and can be viewed and managed on any PC by special software.
6. The instrument is easy to operate and the measurement process is controlled by microprocessor. As long as the appropriate measurement mode is selected, the measurement of data can be completed automatically under the control of microprocessor.
7. Integrated model, with standard capacitor and high voltage power supply, is convenient for field test and reduces field wiring.
8. The instrument has high accuracy and can meet the requirements of oil dielectric loss measurement. Therefore, only standard oil cup and special testing line are needed to realize oil dielectric loss measurement.
9. It has the function of low voltage shielding for reverse wiring. Under the condition of 220 kV CVT bus grounding, it can measure the dielectric loss of 10 kV reverse wiring without disconnection.
10,Can do AC voltage withstand test. It is convenient for PT and CT to do AC voltage withstanding test twice and 400V low voltage system to do voltage withstanding test.
11. It can identify the frequency of external high-voltage power supply from 40Hz to 70Hz, and allow large capacity and high voltage dielectric loss test with power frequency power supply or series resonant power supply.
12. It has the function of CVT test and can realize the self-excitation test of CVT. It can set four protection restrictions of high voltage/current and low voltage/current to ensure the safety of person and equipment.
13. When testing CVT, not only the capacitance and dielectric loss values of C1 and C2 can be automatically tested, but also the total capacitance and dielectric loss values of CVT equipment can be tested.
14. With a thermal printer, it can print out, with a calendar clock, to facilitate users to produce test reports, with U disk output.
15. With computer interface. A computer can control 32 instruments, which can be integrated into an integrated high-voltage test vehicle to realize measurement, data processing and report output.
16. Grounding protection function. When the instrument is not grounded or grounded badly, the instrument does not enter the normal procedure and does not output high voltage. Overcurrent protection function, the instrument will not be damaged when the sample is short-circuit or breakdown.
17. Electrical‑shock protection function. When the instrument operator accidentally electrical‑shock, the instrument will immediately cut off the high voltage to ensure the safety of the test personnel.
18,Complies with the State Grid's specifications for data and communication technology of electrical equipment digital testing instruments. Built-in Bluetooth communication. (Optional)
Product Description
Dielectric loss measurement is a very basic method in insulation test. It can effectively detect the whole damp deterioration and partial defects of electrical equipment insulation. It is widely used in electrical manufacturing, installation of electrical equipment, handover and preventive testing. Measurement of dielectric loss of transformer, transformer, reactor, capacitor, bushing and arrester is the most basic method to measure their insulation performance.
Product Alias
Dielectric Loss Tester / Dielectric Loss Tester / Automatic Dielectric Loss Tester / Automatic Dielectric Loss Tester / Anti‑interference Dielectric Loss Tester / Anti‑interference Dielectric Loss Tester / Variable‑Frequency Dielectric Loss Tester / Variable‑Frequency Dielectric Loss Tester
Features
1. The instrument uses Fourier transform digital filtering technology to measure capacitance, dielectric loss and other parameters. The test result has high precision and is easy to realize automatic measurement. Features
2. The instrument adopts frequency conversion technology to eliminate 50Hz power frequency interference in the field. Even in the environment of strong electromagnetic interference, reliable data can be measured.
3. It is easy to operate with full touch LCD. Full touch LCD screen, super full graphics operation interface, each process is very clear, operators can use without additional professional training. The whole process can be measured by touch.
4. Storage data: It is equipped with a calendar chip and a large-capacity memory, which can save the test results at any time, view the historical records at any time, and print out. The current time and storage time can be displayed and printed at any time.
5. Scientific and advanced data management: Instrument data can be exported through U disk, and can be viewed and managed on any PC by special software.
6. The instrument is easy to operate and the measurement process is controlled by microprocessor. As long as the appropriate measurement mode is selected, the measurement of data can be completed automatically under the control of microprocessor.
7. Integrated model, with standard capacitor and high voltage power supply, is convenient for field test and reduces field wiring.
8. The instrument has high accuracy and can meet the requirements of oil dielectric loss measurement. Therefore, only standard oil cup and special testing line are needed to realize oil dielectric loss measurement.
9. It has the function of low voltage shielding for reverse wiring. Under the condition of 220 kV CVT bus grounding, it can measure the dielectric loss of 10 kV reverse wiring without disconnection.
10,Can do AC voltage withstand test. It is convenient for PT and CT to do AC voltage withstanding test twice and 400V low voltage system to do voltage withstanding test.
11. It can identify the frequency of external high-voltage power supply from 40Hz to 70Hz, and allow large capacity and high voltage dielectric loss test with power frequency power supply or series resonant power supply.
12. It has the function of CVT test and can realize the self-excitation test of CVT. It can set four protection restrictions of high voltage/current and low voltage/current to ensure the safety of person and equipment.
13. When testing CVT, not only the capacitance and dielectric loss values of C1 and C2 can be automatically tested, but also the total capacitance and dielectric loss values of CVT equipment can be tested.
14. With a thermal printer, it can print out, with a calendar clock, to facilitate users to produce test reports, with U disk output.
15. With computer interface. A computer can control 32 instruments, which can be integrated into an integrated high-voltage test vehicle to realize measurement, data processing and report output.
16. Grounding protection function. When the instrument is not grounded or grounded badly, the instrument does not enter the normal procedure and does not output high voltage. Overcurrent protection function, the instrument will not be damaged when the sample is short-circuit or breakdown.
17. Electrical‑shock protection function. When the instrument operator accidentally electrical‑shock, the instrument will immediately cut off the high voltage to ensure the safety of the test personnel.
18,Complies with the State Grid's specifications for data and communication technology of electrical equipment digital testing instruments. Built-in Bluetooth communication. (Optional)
Product Parameters
| Accuracy | Cx ±(reading×1%+1pF) tgδ ±(reading×1%+0.00040) |
| Power (0.2≤cosφ≤1) ±(Read×1.0% +2 words) | |
| Anti-interference index | Frequency conversion anti-interference, in 200% interference can still achieve the above accuracy |
| Capacitance range | internal high voltage 3pF~60000pF/10kV 60pF~1μF/0.5kV external high voltage 3pF~1.5μF/10kV 60pF~30μF/0.5kV |
| tgδ range | No limitation, resolution 0.001%, capacitance, inductance, resistance can be automatically identified |
| Internal high voltage | voltage setting range 0.5~10kV maximum output voltage 200mA voltage lifting mode voltage setting arbitrarialy test frequency single frequency set at will( 40-70Hz) |
| Computer interface | Standard RS232 interface |
| Pinter | mini-type thermal printer |
| Ambient temperature | -10ºC~50ºC |
Application Scenarios
FAQ
Question 1: Unable to complete measurement, no valid test data obtained
Customer: After finishing wiring and starting the test, the instrument runs normally but cannot output valid dielectric loss and capacitance values. What causes this issue?
Manufacturer: This situation frequently occurs in on‑site substation tests. Please perform troubleshooting step‑by‑step. First, verify whether the grounding of test circuit is reliable and check if the grounding cable is loose or disconnected. Second, use a multimeter to check continuity of high‑voltage cables and measuring signal wires, confirm no open‑circuit fault. Meanwhile confirm you have selected the correct test mode, including positive connection, reverse connection or CVT mode according to actual test sample. If the tested equipment is heavily damp or suffers insulation damage, valid measuring data cannot be acquired. Restart the instrument and run the test again. If the problem remains unsolved after above operations, please contact us promptly and do not attempt to disassemble the equipment yourself.
Question 2: Measured value cannot reach preset parameter and data fluctuates obviously
Customer: The instrument can start measurement normally. However, during testing, the reading drifts continuously, sometimes it cannot reach the preset value and automatically reduces output. How can this issue be resolved?
Manufacturer: This problem is mainly caused by poor contact of measuring cables, strong on‑site electromagnetic interference or surface leakage of the test object. Firstly, check all connection terminals to ensure firm connection. Secondly, keep high‑voltage measuring cables away from live high‑voltage equipment nearby, enable the built‑in anti‑interference function of the instrument. Thirdly, thoroughly clean the surface of tested insulator and keep it dry to reduce surface leakage current. Confirm the grounding resistance meets test requirements. If large deviation still exists, it is recommended to carry out insulation inspection for the test sample itself.
Question 3: High‑voltage output fails and protection alarm is triggered
Customer: When triggering high‑voltage output, the instrument immediately gives an alarm and cannot boost high‑voltage. Is the internal high‑voltage module damaged?
Manufacturer: In most cases this is protective action rather than actual module damage. Please check whether short‑circuit risk exists inside test loop, confirm the test object is not short‑circuited or broken‑down. Check the connection status of grounding cable. Once over‑current or short‑circuit signal is detected, the instrument will automatically lock high‑voltage output. Disconnect AC power supply completely, wait for several minutes and restart the equipment. If alarm still appears after restarting, please contact technical support in time, do not open the instrument case without permission.
Question 4: The main unit experiences frequent resets and tripping
Customer: During substation field tests, the dielectric loss tester occasionally resets automatically, and sometimes power supply trips, disrupting the test progress. Is there any way to avoid this?
Manufacturer: There are generally three main causes for frequent reset: power supply fluctuations, external strong magnetic field interference, or unreliable grounding of the main unit. It is recommended to use an independent power supply with sufficient capacity at the site to avoid sharing the same circuit with large‑power equipment. Both the main unit and test sample must be reliably grounded, and the grounding electrodes shall be installed in moist soil as much as possible. The test area should be positioned as far away as possible from strong electromagnetic interference sources. Regarding power supply tripping, verify whether the on‑site power supply capacity meets the device’s input requirements. If frequent resets still occur after troubleshooting, provide us with the on‑site wiring diagram and a description of the observed phenomena, and we will arrange technical personnel to provide remote guidance.
Question 5: Precautions for Transportation, Handling, and Wiring
Customer: This automatic dielectric loss tester is equipped with multiple matching accessories. Are there any particular precautions to keep in mind for on‑site installation, operation and transportation?
Manufacturer: Yes, please comply with the following key precautions: First, the device will output high‑voltage signal during testing; therefore, it must be reliably grounded during use. At least two personnel must operate the device, and strict adherence to high‑voltage testing safety regulations is required. Second, strictly distinguish positive‑connection and reverse‑connection wiring modes, wrong connections may damage the instrument and test sample. It is recommended that two personnel cross‑check the wiring after completion before starting high‑voltage output. Third, avoid severe impacts or drops during transportation to prevent internal component damage. Fourth, prior to testing, clean the surface of the test object thoroughly and ensure it remains dry to minimize the impact of surface leakage on the test results. Fifth, the device should be stored in a dry, well‑ventilated area, avoiding exposure to rain or moisture. For the first‑time use, read the instruction manual thoroughly and have an experienced high‑voltage testing specialist perform the operation.
Question 6: Shipping Method
Customer: If we place an order, how do you typically ship the goods? Will there be any issues with transporting bulky items such as reactors?
Manufacturer: We default to using dedicated logistics lines or brand-specific express shipping services; small-sized main units and accessories may also be shipped via standard courier services. Large items, such as reactors and excitation transformers, are packed using wooden crates or wooden frames for reinforcement to prevent bumps and moisture exposure during transit; a packing list is included with each package to facilitate item-by-item counting for you. Logistics costs are typically determined by both parties in accordance with the contract terms; after shipment, we will send you both the tracking number and the carrier's contact phone number for easy tracking.If your project site is remote or if delivery to the site is required with a specified logistics company, please inform us in advance when placing your order; we can then coordinate and arrange accordingly.
Question 7: Delivery Lead Time
Customer: Our project is under tight deadlines; how long will it take for the order to be shipped after we place it? Can we request expedited shipping?
Manufacturer: Standard specifications – stock available; typically delivered upon receipt of the order. Orders can be shipped within [X] working days; for non-standard products requiring customized voltage levels, capacities, or reactor combination configurations, the production cycle typically ranges from [X] to [Y] days.The delivery time will be approximately 7-15 working days; the specific timeline shall be subject to the sales confirmation provided upon order placement. If your project has a tight schedule, please inform us of the latest expected delivery date before placing your order; we will first verify the production schedule and inventory status, and where possible, will coordinate expedited production and prioritize shipment. However, it is recommended to allocate sufficient transit time for logistics to avoid delaying on-site testing.
Question 8: After-sales Service and Warranty
Customer: What is the warranty period for this equipment? If any issues arise during on-site use, how will your after-sales service respond?
Manufacturer: We provide a two-year free warranty on the entire unit and lifelong technical support services. During the warranty period, if issues arise due to defects in the equipment itself, we will provide free repair or replacement of components; when problems occur on-site, we commit to responding within 24 hours; most wiring and parameter configuration issues can be resolved through remote guidance via video or telephone; for cases where an on-site visit is necessary, we will arrange for our technicians to arrive at the location to resolve the issue. After the warranty period expires, we still offer repair services, with spare parts supplied at cost price for the long term, and software updates provided free of charge for life. Upon delivery of the equipment, we also offer free operational training (video operation guides)to ensure that your testing personnel can operate the equipment independently and proficiently; should you have any further questions, please feel free to contact our dedicated after-sales hotline directly.
Question 9: Shipping methods for each region (Sea freight)
Customer: Our projects are distributed across several states, and our procurement volumes are substantial; are the shipping methods consistent across all states? How is the delivery time calculated?
Manufacturer: The specifications are identical; however, it should be specifically noted that this equipment set is large in size and heavy in weight—components such as the reactor and excitation transformer are all classified as heavy components. Therefore, regardless of which state or region the shipment is destined for, we will uniformly utilize sea freight transportation. The packaging employs export-grade wooden crates with reinforced structures, along with moisture-proof and rust-proof treatments; the design of these wooden crates is optimized for long-distance sea transport and multiple lifting and transshipment operations. Upon arrival at the destination, simply unpack the goods and conduct an inspection before putting them into use. Regarding delivery time, the sea freight transit period depends on the port of destination: near-sea routes are generally faster, whereas ocean routes may take longer; the exact number of days will be confirmed based on the shipping schedule specified in the bill of lading. We have a dedicated freight forwarding agency to handle booking of shipping space, customs declaration, insurance, and other related procedures; once the vessel departs, we will send you documents such as the bill of lading and the packing list, enabling you to arrange for the receipt of goods at the port of destination and their inland transshipment in advance
Question 1: Unable to complete measurement, no valid test data obtained
Customer: After finishing wiring and starting the test, the instrument runs normally but cannot output valid dielectric loss and capacitance values. What causes this issue?
Manufacturer: This situation frequently occurs in on‑site substation tests. Please perform troubleshooting step‑by‑step. First, verify whether the grounding of test circuit is reliable and check if the grounding cable is loose or disconnected. Second, use a multimeter to check continuity of high‑voltage cables and measuring signal wires, confirm no open‑circuit fault. Meanwhile confirm you have selected the correct test mode, including positive connection, reverse connection or CVT mode according to actual test sample. If the tested equipment is heavily damp or suffers insulation damage, valid measuring data cannot be acquired. Restart the instrument and run the test again. If the problem remains unsolved after above operations, please contact us promptly and do not attempt to disassemble the equipment yourself.
Question 2: Measured value cannot reach preset parameter and data fluctuates obviously
Customer: The instrument can start measurement normally. However, during testing, the reading drifts continuously, sometimes it cannot reach the preset value and automatically reduces output. How can this issue be resolved?
Manufacturer: This problem is mainly caused by poor contact of measuring cables, strong on‑site electromagnetic interference or surface leakage of the test object. Firstly, check all connection terminals to ensure firm connection. Secondly, keep high‑voltage measuring cables away from live high‑voltage equipment nearby, enable the built‑in anti‑interference function of the instrument. Thirdly, thoroughly clean the surface of tested insulator and keep it dry to reduce surface leakage current. Confirm the grounding resistance meets test requirements. If large deviation still exists, it is recommended to carry out insulation inspection for the test sample itself.
Question 3: High‑voltage output fails and protection alarm is triggered
Customer: When triggering high‑voltage output, the instrument immediately gives an alarm and cannot boost high‑voltage. Is the internal high‑voltage module damaged?
Manufacturer: In most cases this is protective action rather than actual module damage. Please check whether short‑circuit risk exists inside test loop, confirm the test object is not short‑circuited or broken‑down. Check the connection status of grounding cable. Once over‑current or short‑circuit signal is detected, the instrument will automatically lock high‑voltage output. Disconnect AC power supply completely, wait for several minutes and restart the equipment. If alarm still appears after restarting, please contact technical support in time, do not open the instrument case without permission.
Question 4: The main unit experiences frequent resets and tripping
Customer: During substation field tests, the dielectric loss tester occasionally resets automatically, and sometimes power supply trips, disrupting the test progress. Is there any way to avoid this?
Manufacturer: There are generally three main causes for frequent reset: power supply fluctuations, external strong magnetic field interference, or unreliable grounding of the main unit. It is recommended to use an independent power supply with sufficient capacity at the site to avoid sharing the same circuit with large‑power equipment. Both the main unit and test sample must be reliably grounded, and the grounding electrodes shall be installed in moist soil as much as possible. The test area should be positioned as far away as possible from strong electromagnetic interference sources. Regarding power supply tripping, verify whether the on‑site power supply capacity meets the device’s input requirements. If frequent resets still occur after troubleshooting, provide us with the on‑site wiring diagram and a description of the observed phenomena, and we will arrange technical personnel to provide remote guidance.
Question 5: Precautions for Transportation, Handling, and Wiring
Customer: This automatic dielectric loss tester is equipped with multiple matching accessories. Are there any particular precautions to keep in mind for on‑site installation, operation and transportation?
Manufacturer: Yes, please comply with the following key precautions: First, the device will output high‑voltage signal during testing; therefore, it must be reliably grounded during use. At least two personnel must operate the device, and strict adherence to high‑voltage testing safety regulations is required. Second, strictly distinguish positive‑connection and reverse‑connection wiring modes, wrong connections may damage the instrument and test sample. It is recommended that two personnel cross‑check the wiring after completion before starting high‑voltage output. Third, avoid severe impacts or drops during transportation to prevent internal component damage. Fourth, prior to testing, clean the surface of the test object thoroughly and ensure it remains dry to minimize the impact of surface leakage on the test results. Fifth, the device should be stored in a dry, well‑ventilated area, avoiding exposure to rain or moisture. For the first‑time use, read the instruction manual thoroughly and have an experienced high‑voltage testing specialist perform the operation.
Question 6: Shipping Method
Customer: If we place an order, how do you typically ship the goods? Will there be any issues with transporting bulky items such as reactors?
Manufacturer: We default to using dedicated logistics lines or brand-specific express shipping services; small-sized main units and accessories may also be shipped via standard courier services. Large items, such as reactors and excitation transformers, are packed using wooden crates or wooden frames for reinforcement to prevent bumps and moisture exposure during transit; a packing list is included with each package to facilitate item-by-item counting for you. Logistics costs are typically determined by both parties in accordance with the contract terms; after shipment, we will send you both the tracking number and the carrier's contact phone number for easy tracking.If your project site is remote or if delivery to the site is required with a specified logistics company, please inform us in advance when placing your order; we can then coordinate and arrange accordingly.
Question 7: Delivery Lead Time
Customer: Our project is under tight deadlines; how long will it take for the order to be shipped after we place it? Can we request expedited shipping?
Manufacturer: Standard specifications – stock available; typically delivered upon receipt of the order. Orders can be shipped within [X] working days; for non-standard products requiring customized voltage levels, capacities, or reactor combination configurations, the production cycle typically ranges from [X] to [Y] days.The delivery time will be approximately 7-15 working days; the specific timeline shall be subject to the sales confirmation provided upon order placement. If your project has a tight schedule, please inform us of the latest expected delivery date before placing your order; we will first verify the production schedule and inventory status, and where possible, will coordinate expedited production and prioritize shipment. However, it is recommended to allocate sufficient transit time for logistics to avoid delaying on-site testing.
Question 8: After-sales Service and Warranty
Customer: What is the warranty period for this equipment? If any issues arise during on-site use, how will your after-sales service respond?
Manufacturer: We provide a two-year free warranty on the entire unit and lifelong technical support services. During the warranty period, if issues arise due to defects in the equipment itself, we will provide free repair or replacement of components; when problems occur on-site, we commit to responding within 24 hours; most wiring and parameter configuration issues can be resolved through remote guidance via video or telephone; for cases where an on-site visit is necessary, we will arrange for our technicians to arrive at the location to resolve the issue. After the warranty period expires, we still offer repair services, with spare parts supplied at cost price for the long term, and software updates provided free of charge for life. Upon delivery of the equipment, we also offer free operational training (video operation guides)to ensure that your testing personnel can operate the equipment independently and proficiently; should you have any further questions, please feel free to contact our dedicated after-sales hotline directly.
Question 9: Shipping methods for each region (Sea freight)
Customer: Our projects are distributed across several states, and our procurement volumes are substantial; are the shipping methods consistent across all states? How is the delivery time calculated?
Manufacturer: The specifications are identical; however, it should be specifically noted that this equipment set is large in size and heavy in weight—components such as the reactor and excitation transformer are all classified as heavy components. Therefore, regardless of which state or region the shipment is destined for, we will uniformly utilize sea freight transportation. The packaging employs export-grade wooden crates with reinforced structures, along with moisture-proof and rust-proof treatments; the design of these wooden crates is optimized for long-distance sea transport and multiple lifting and transshipment operations. Upon arrival at the destination, simply unpack the goods and conduct an inspection before putting them into use. Regarding delivery time, the sea freight transit period depends on the port of destination: near-sea routes are generally faster, whereas ocean routes may take longer; the exact number of days will be confirmed based on the shipping schedule specified in the bill of lading. We have a dedicated freight forwarding agency to handle booking of shipping space, customs declaration, insurance, and other related procedures; once the vessel departs, we will send you documents such as the bill of lading and the packing list, enabling you to arrange for the receipt of goods at the port of destination and their inland transshipment in advance
Shipping scenario
Scene (One)
Scene (Two)
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