
I.Solution Background and Objectives
(A) Industry Pain Points
Electrical equipment, during long-term operation, is affected by factors such as temperature, humidity, dust, and mechanical wear, making insulation layers prone to aging, damage, and moisture absorption. These issues can lead to leakage currents, short circuits, or even fire accidents. Traditional detection methods suffer from the following pain points:
- Testing equipment is bulky and lacks portability, making it difficult to adapt to on-site maintenance scenarios.
- Single test voltage range cannot meet the testing needs of equipment with different voltage levels.
- Low measurement accuracy and poor data stability can easily lead to misjudgment.
- Weak equipment protection capability; susceptible to damage in harsh environments (e.g., high temperature, high humidity, dust), affecting inspection efficiency.
(B) Solution Objectives
- Provide precise insulation resistance testing for electrical equipment of different voltage levels, identifying potential insulation hazards in advance.
- Adapt to multiple scenarios such as on-site maintenance, workshop calibration, and outdoor operations, enhancing inspection flexibility.
- Ensure the safety of the testing process, preventing injury to personnel or damage to equipment caused by short circuits or residual voltage surges.
- Reduce equipment energy consumption and maintenance costs, extend the service life of the tester, and improve enterprise operational efficiency.
II. Core Product Advantages and Application Scenarios
The KW2570 series insulation resistance tester, leveraging its performance characteristics, can be widely adapted to various fields including power operation and maintenance, industrial manufacturing, new energy, and building electrical systems. Specific application scenarios and corresponding advantages are as follows:
Application Field
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Core Application Scenarios
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Product Advantage Support
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Power Operation & Maintenance
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1. Routine insulation testing of high-voltage equipment in substations (e.g., transformers, circuit breakers, cables). 2. Insulation performance maintenance of distribution lines and distribution boxes. 3. Insulation fault troubleshooting during power outages.
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1. Supports four test voltage ranges: 500V/1000V/2500V/5000V, suitable for high and low voltage equipment. 2. Output short-circuit current ≥1mA, strong anti-interference capability, ensures measurement accuracy in high-voltage scenarios. 3. Features short-circuit and residual voltage surge protection, preventing equipment damage during testing. 4. Powered by 12V lithium battery (compatible with AC 220V), enables continuous operation even in outdoor scenarios without power supply.
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Industrial Manufacturing
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1. Pre-delivery insulation performance calibration of production equipment like motors, water pumps, frequency converters. 2. Regular insulation testing of production line electrical circuits, preventing production stoppages due to equipment leakage. 3. Equipment maintenance in workshop environments with high dust or humidity.
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1. Measurement error ≤5%, high accuracy ensures product quality upon departure. 2. Utilizes shock-proof, dust-proof, and moisture-proof structure, suitable for harsh workshop environments. 3. 3½ digit large LCD screen display, clear and easy-to-read data, reduces manual recording errors. 4. Compact size (260mm×180mm×100mm), lightweight (only 1kg), easy for mobile testing within the workshop.
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New Energy Field
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1. Insulation resistance testing of PV inverters, energy storage battery packs. 2. Insulation performance maintenance of electrical circuits in wind power equipment. 3. Regular maintenance of outdoor equipment in new energy power plants.
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1. Insulation resistance measurement range ≥50GΩ (at DC 1kV), meets high insulation requirements of new energy equipment. 2. Strong power supply adaptability (lithium battery + AC 220V), suitable for outdoor plant scenarios without stable power. 3. Low power consumption design (standby power ≤1.8W), extends outdoor operation time. 4. Withstands 3kV AC for 1 minute, strong resistance to grid fluctuations, ensures testing safety.
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Building Electrical
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1. Insulation acceptance testing for new building electrical circuits (e.g., lighting circuits, power circuits). 2. Insulation fault排查 before electrical renovation of old buildings. 3. Circuit testing in damp environments like basements and garages.
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1. Multiple voltage ranges adapt to different specification circuits (e.g., 500V for lighting circuits, 1000V for power circuits). 2. Moisture-proof structure design prevents environmental humidity from affecting tester performance. 3. Simple operation, easy to use quickly even without professional technicians, reducing acceptance costs. 4. Automatic low battery warning display prevents test interruption due to insufficient power.
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III. Solution Implementation Process
(A) Preparation: Define Testing Requirements and Equipment Selection
- Requirement Confirmation: Based on the voltage level of the equipment to be tested (e.g., 500V/1000V for low-voltage motors, 2500V/5000V for high-voltage cables), usage environment (e.g., workshop, outdoor, damp/dusty environments), and testing frequency (daily maintenance / factory calibration / fault排查), determine the specific usage scenario and parameter requirements for the KW2570 tester.
- Equipment Check: Before testing, inspect the tester's exterior for damage (check shock-proof, dust-proof structure integrity) and ensure the battery is sufficiently charged (no low battery symbol displayed). If using AC power, confirm the supply voltage is within the 180V~260V range to avoid affecting testing accuracy due to voltage fluctuations.
- Safety Precautions: Test personnel should wear insulated gloves and insulated shoes. Ensure the equipment under test is powered off and discharged to avoid residual voltage surges. If the testing environment is dusty or damp, clean the tester's surface beforehand and check the sealing of the protective structure.
(B) On-site Testing: Standardized Operation and Data Recording
- Range Selection: Based on the voltage level of the equipment under test, rotate the "Select" knob to the corresponding voltage range (e.g., select 500V for testing 220V lighting circuits, select 5000V for testing 10kV cables). Confirm the range indicator light is on.
- Connection: Connect the tester's "L" terminal (Line) to the live part of the equipment under test, and the "E" terminal (Earth) to the equipment's grounding terminal. Ensure connections are secure and not loose. If measuring insulation to ground, the "G" terminal (Guard) connection can be omitted.
- Start Test: Press the "Start/Stop" button. The tester begins outputting the test voltage and measuring the insulation resistance. The large LCD screen displays the measurement data in real-time. Once the data stabilizes (typically 10-30 seconds, depending on equipment type), record the current resistance value, test voltage, ambient temperature, and humidity.
- Exception Handling: If the measured value is below the equipment's insulation standard (e.g., motor insulation resistance below 0.5MΩ), pause the test and investigate whether the equipment is damp or the insulation layer is damaged. If the tester displays a short-circuit alarm, stop testing immediately and check for incorrect wiring or a short circuit in the equipment under test.
(C) Post-Test Analysis: Data Evaluation and Equipment Maintenance
- Data Comparison: Compare the current measurement data with the equipment's historical test data and industry standards (e.g., "Preventive Test Regulations for Electrical Equipment Insulation"). Determine if the equipment's insulation performance has degraded (e.g., a year-on-year decrease of over 30% requires special attention).
- Report Generation: Compile the test data and generate an insulation test report. Clearly list qualified/non-qualified equipment and propose maintenance suggestions (e.g., damp equipment needs drying, equipment with damaged insulation needs re-insulation or replacement).
- Equipment Maintenance: After testing, turn off the tester's power. Clean the dust from the terminal connections. If using the lithium battery, recharge it promptly (use a charger rated for AC 180V~260V, 50/60Hz). Store the tester in its shock-proof packaging in a dry, ventilated environment, avoiding direct sunlight or high temperatures.
IV. Solution Value and Support
(A) Core Value
- Safety Assurance: By detecting potential insulation hazards in advance, prevents safety accidents caused by equipment leakage or short circuits, safeguarding personnel and property. The tester's own short-circuit and residual voltage protection features further reduce risks during testing.
- Efficiency Improvement: Portable design (1kg weight, lithium battery power) adapts to multiple testing scenarios, reducing equipment transportation and power supply dependency. Large screen display and simple operation lower the learning curve and improve inspection efficiency (single equipment test time reduced to within 5 minutes).
- Cost Optimization: High-precision measurements reduce misjudgments, avoiding unnecessary repairs or equipment replacements due to errors. Low power consumption and durable structure design extend the tester's service life, reducing equipment procurement and maintenance costs.
(B) Service Support
- Supplier Qualifications: The tester is provided by (Wone Store). The company has an annual export volume exceeding $300 million, possesses a production base over 1000㎡, and has a professional technical team. Products have passed platform qualification certification and technical evaluation, ensuring reliable quality.
- Full Lifecycle Service: Provides full-process services including procurement consultation, usage training, regular calibration, and after-sales maintenance. A dedicated "Full Lifecycle Management Manager" is assigned to ensure stable operation from procurement to decommissioning.
- Response Efficiency: The supplier's online store guarantees 100% on-time delivery. After-sales response time is ≤4 hours. If equipment failure occurs, on-site repair or backup equipment support can be provided to minimize the impact of testing interruptions on production.
V. Target Customer Groups
This solution is suitable for various enterprises and institutions requiring insulation testing for electrical equipment, including but not limited to:
- Power companies, substations, power distribution operation and maintenance companies.
- Manufacturing plants (e.g., automotive, machinery, electronics factories).
- New energy enterprises (PV power plants, wind farms, energy storage power stations).
- Construction engineering companies, property management firms (for electrical acceptance and maintenance).
- Testing institutions, laboratories (for electrical equipment calibration and quality inspection).
Through the application of the KW2570 series insulation resistance tester, customers can establish a standardized and efficient insulation testing system, ensuring the safe operation of electrical equipment.