Product Introduction
The three circuit transformer DC resistance tester is made of high-strength insulation materials and precision electronic components, and realizes efficient detection of multi-winding resistance parameters through three-channel synchronous sampling technology. Its core adopts the four-terminal measurement method, injects stable DC current into the winding under test through a constant current source, uses a high-sensitivity voltage detection module to capture the winding voltage drop, and combines intelligent algorithms to eliminate contact resistance interference to ensure μΩ-level measurement accuracy.
Technical Parameters
|
Measurement method |
Single-phase (two-phase) |
three-phase |
|||||||
|
Current gear |
1A |
5A |
10A |
20A |
40A |
1A |
5A |
10A |
20A |
|
measuring range |
10mΩ～20Ω |
1mΩ～4Ω |
1mΩ～2Ω |
1mΩ～1Ω |
1mΩ～0.5Ω |
10mΩ～6Ω(per phase) |
1mΩ～1Ω(per phase) |
1mΩ～0.6Ω(per phase) |
1mΩ～0.3Ω(per phase) |
|
Maximum resolution |
0.1μΩ |
||||||||
|
Measurement accuracy |
± 0.2% (full range) ± 2 words |
||||||||
|
Data storage capacity |
150 sets |
||||||||
|
Power Supply |
AC 220V±22V,50Hz±2 Hz |
||||||||
|
work environment |
Environmental temperature: 0 ℃~40 ℃ Relative humidity: ≤ 80% RH |
||||||||
Nickname:DC Winding Resistance Tester,Resistance Meter,Three-circuit Transformer DC Resistance Tester
Product Features
Efficient Measurement
The three-circuit design of the three circuit transformer DC resistance tester can detect three windings at the same time, and the working efficiency is three times higher than that of the traditional single-circuit tester.
Large-capacity Storage
The three circuit transformer DC resistance tester has a powerful storage function and can accommodate 150 sets of data.
Adapt To Various Environments
The three circuit transformer DC resistance tester can operate stably under the conditions of 0 ℃ ~40 ℃ ambient temperature and relative humidity ≤80 % RH.
Fault analysis and troubleshooting
|
Fault phenomenon |
Cause analysis |
Exclusion method |
remarks |
|
No display when turned on |
The power supply is not connected |
turn on electricity |
When replacing the fuse, it should be replaced with the same model of fuse and cannot be replaced with other models |
|
Instrument 10A fuse not installed properly or disconnected |
Reinstall or replace the fuse |
||
|
No current output |
Open circuit of the equipment to be inspected |
Check and troubleshoot the equipment |
|
|
There is an open circuit fault in the test circuit |
Check the test circuit and eliminate open circuit faults |
Product Application
Power Industry
The three circuit transformer dc resistance tester is mainly used for preventive maintenance of power grid transformers. It accurately measures the DC resistance of the winding to determine the integrity of the conductive circuit and prevent local overheating or short circuit failures caused by poor contact.
Rail Transit
In the railway traction power supply system, the three circuit transformer dc resistance tester performs regular testing of locomotive transformers to ensure that the resistance value of the traction circuit meets the standard and ensures the continuous power output stability of high-speed rail EMUs.
New Energy Field
The three circuit transformer dc resistance tester is used for photovoltaic/wind farm step-up transformer testing. Through the three-circuit synchronous measurement technology, the resistance value of complex winding structures can be quickly analyzed.
We are a professional Three Circuit Transformer DC Resistance Tester manufacturers in China.We can provide the best professional Three Circuit Transformer DC Resistance Tester for sales and competitive price. If you are looking for Three Circuit Transformer DC Resistance Tester supplier, we are a good choice.
Contact us to get Three Circuit Transformer DC Resistance Tester price.
FAQ
1. What is a three circuit transformer DC resistance tester?
Three circuit transformer DC resistance tester is a testing instrument used to measure the DC resistance of transformer windings, transformer windings, motor windings, switch contacts, and other electrical equipment. By applying a stable DC current to the tested winding and measuring the voltage drop, the winding resistance value can be accurately calculated to determine whether the winding connection, welding, and conductive circuit are normal.
2. What is the main purpose of a DC resistance tester for testing?
Mainly used for:
DC resistance test of transformer winding
Factory delivery and handover test of power transformers
Transformer winding resistance test
Motor and generator winding testing
Reactor winding test
High voltage switch and circuit breaker conductive circuit testing
Quality inspection of joints and connections after maintenance of large electrical equipment
3. Is the three circuit transformer DC resistance tester suitable for on-site use?
suitable On site equipment typically adopts a portable structure and is equipped with functions such as digital display, automatic testing, automatic discharge, and data storage. It can be used in substations, power plants, transformer production workshops, and power maintenance sites.
4. Can a three circuit transformer DC resistance tester be customized?
For different capacities, testing currents, and application scenarios, corresponding models or customized testing solutions can be provided according to customer testing needs. Before procurement, it is recommended to provide information such as the type of equipment being tested, rated capacity, resistance range, and target test current in order to select the appropriate equipment.
5. What are the after-sales services for three circuit transformer DC resistance testers?
We can provide services such as equipment selection, technical consultation, operation training, testing plans, usage guidance, troubleshooting, and after-sales technical support. For export customers, English manuals, test reports, and related technical documents can also be provided according to project requirements.
6. Can the three circuit transformer DC resistance tester be used for export projects?
Okay. When used in overseas power engineering, substations, power plants, transformer manufacturing enterprises, and electrical equipment maintenance projects, corresponding configurations should be selected according to local power standards, technical specifications, and project requirements, and the input voltage, communication interface, language, and relevant certification requirements of the instruments should be confirmed.
Hot Tags: Three Circuit Transformer DC Resistance Tester, China Three Circuit Transformer DC Resistance Tester manufacturers, suppliers, factory, 10kV Digital Insulation Tester
