New Yicai 30KV Zinc Oxide Arrester DC Parameter Tester Zinc Oxide Arrester Resistive Current Free Shipping
The keywords you mentioned, such as "New Yicai 30KV Zinc Oxide Arrester DC Parameter Tester" and "Zinc Oxide Arrester Resistive Current", precisely point to professional high-voltage testing equipment used in power systems to detect the core performance of zinc oxide arresters (MOA).
Combined with the industrial belt in Yangzhou, Jiangsu where you are located, and the mainstream technology in the industry, here is a summary of the core functions, technical parameters, and selection points for this series of 30KV testers:
1. Core Functions and Application Scenarios
This type of 30KV DC parameter tester is mainly used to test gapless zinc oxide arresters for power systems of 10kV and below. Its core test items include:
DC reference voltage (U1mA) measurement: Evaluates the nonlinear characteristics and aging degree of the arrester valve blocks.
Leakage current measurement at 0.75U1mA: This indicator is extremely sensitive for judging whether the arrester is damp or deteriorated (standards typically require this leakage current to be no greater than 50μA).
Resistive current detection: Some high-end or comprehensive testers also have the function of measuring AC resistive current, used to separate the resistive component from the total current during online or outage conditions, thereby more accurately analyzing the aging and dampness of the valve blocks.
2. Core Technical Features
Fully automatic closed-loop control: Utilizes microcomputer control and automatic control principles to perform precise closed-loop adjustments on the 1mA current and 0.75 times the DC reference voltage. The operator only needs to press a button, and the instrument automatically completes the entire process of voltage increase, measurement, and voltage decrease. A single measurement typically takes only 7 to 15 seconds, making it very suitable for batch testing.
Integrated portable design: Highly integrates the DC high-voltage power supply, measurement, and control system into one chassis, featuring small size and light weight (usually around 5kg-6kg), and mostly adopts a waterproof and aesthetically pleasing chassis for easy field portability.
Comprehensive safety protection: Equipped with multiple protection mechanisms such as overvoltage, overcurrent, and battery undervoltage. After measurement, the high voltage is automatically removed, and the residual voltage across the arrester is displayed in real-time to ensure operator safety.
3. Key Technical Indicator Reference
Measurement range: DC output voltage 0～30kV (some new models can reach 35kV), leakage current 0～1000μA.
Measurement accuracy: Voltage and current measurement accuracy typically reaches ±0.5% ~ ±1%.
Power supply method: New equipment mostly has a built-in high-energy lithium-ion battery pack (such as 37.8V/3200mAh), supporting both AC and DC power, especially suitable for field or places without power supply.
Environmental adaptability: Operating temperature range is typically -10℃～+50℃, relative humidity ≤85%.
4. Key Operation and Safety Regulations
Reliable grounding: Before testing, the instrument casing must be firmly grounded to ensure the safety of personnel and equipment.
Full discharge: After testing, you must wait for the instrument's discharge indicator to light up, or use a dedicated discharge rod to fully discharge the arrester, and only after confirming there is no residual voltage can you remove the wiring.
Temperature conversion: Record the ambient temperature during measurement. Since valve blocks have a temperature coefficient (for every 10 degrees increase in temperature, the DC 1mA voltage decreases by about 1%), it is necessary to perform temperature conversion on the test results when needed to avoid misjudgment.
💡 Further Assistance
The zinc oxide arrester tester is key equipment for ensuring the reliability of the power grid's overvoltage protection system. May I ask what your specific needs are currently:
Product selection and parameter verification: Do you need to confirm whether the output voltage, built-in battery life, or weight of this 30KV device meets your on-site testing requirements? On-site testing and fault diagnosis: Do you need to understand the on-site wiring specifications, zeroing/calibration methods of this tester, or how to judge whether the arrester is qualified based on the measured U1mA and leakage current data?
Procurement and compliance confirmation: Do you need to sort out the core qualifications (such as metrological calibration certificates) that need to be confirmed with the manufacturer when purchasing such equipment locally in Yangzhou, or obtain specific quotation information?
