Three-Phase Single-Phase Zinc Oxide Arrester Tester Product Introduction:
Zinc Oxide Arrester Tester, mainly used for testing the DC parameters of 6KV and 10KV zinc oxide arresters widely used in power systems. It features simple wiring, small size, light weight, portability, and can be powered by an external power source.
Technical Parameters:
Output Voltage: 35KV
Maximum Output Current: 1.2mA (at 30KV)
Maximum Output Power: 36W
Voltage Ripple Coefficient: 0.5%
Voltage Measurement Accuracy: ±0.5%
0.75 Times Voltage Accuracy: 1%
1mA Current Accuracy: ±0.5%
Current Measurement Accuracy: ±0.5%
Power Supply: AC 220V±15% or Internal Power Supply
Operating Temperature: 25±10℃
Dimensions and Weight: 320mm×250mm×160mm
Product Features:
1. High Current Handling Capability
This is mainly reflected in the arrester's ability to absorb various lightning overvoltages, power frequency transient overvoltages, and switching overvoltages. The current handling capability of zinc oxide arresters fully meets or even exceeds national standards. Indicators such as line discharge level, energy absorption capacity, 4/10 nanosecond high current impulse withstand, and 2ms square wave current handling capability have reached the domestic leading level.
2. Excellent Protection Characteristics
Zinc Oxide Arrester Tester is an electrical product used to protect various electrical equipment in power systems from overvoltage damage, with good protective performance. Because the nonlinear volt-ampere characteristics of zinc oxide valve plates are excellent, only a few hundred microamperes of current pass through under normal operating voltage, making it easy to design with a gapless structure, giving it good protection performance, light weight, and small size. When overvoltage intrudes, the current flowing through the valve plates increases rapidly, while limiting the amplitude of the overvoltage and releasing the energy of the overvoltage. After that, the zinc oxide valve plates return to a high-resistance state, allowing the power system to operate normally.
3. Good Sealing Performance
The arrester components use high-quality composite outer jackets with good aging resistance and airtightness. Measures such as controlling the compression of sealing rings and applying additional sealing adhesive are adopted, and the ceramic outer jacket is used as a sealing material to ensure reliable sealing and stable performance of the arrester.
4. Mechanical Performance
(1) Withstand seismic forces;
(2) Maximum wind pressure acting on the arrester;
(3) The top of the arrester withstands the maximum allowable tension of the conductor.
5. Good Anti-Pollution Performance
Gapless zinc oxide arresters have high pollution resistance.
The creepage distance ratio levels specified by national standards are:
Class II Medium Pollution Area: Creepage distance ratio 20mm/kV
Class III Heavy Pollution Area: Creepage distance ratio 25mm/kV
Class IV Very Heavy Pollution Area: Creepage distance ratio 31mm/kV
6. High Operational Reliability
The reliability of long-term operation depends on the quality of the product and whether the product selection is reasonable. The factors affecting its product quality mainly include the following three aspects:
(1) The rationality of the overall structure of the arrester;
(2) The volt-ampere characteristics and aging resistance of the zinc oxide valve plates;
(3) The sealing performance of the arrester.
7. Power Frequency Withstand Capability
Due to various reasons in power systems such as single-phase grounding, long-line capacitance effect, and load shedding, power frequency voltage can rise or transient overvoltages with high amplitude can occur. The arrester has the ability to withstand a certain increase in power frequency voltage for a certain period of time.
Technical Parameters:
Output Voltage: 35KV
Maximum Output Current: 1.2mA (at 30KV)
Maximum Output Power: 36W
Voltage Ripple Coefficient: 0.5%
Voltage Measurement Accuracy: ±0.5%
0.75 Times Voltage Accuracy: 1%
1mA Current Accuracy: ±0.5%
Current Measurement Accuracy: ±0.5%
Power Supply: AC 220V±15% or Internal Power Supply
Operating Temperature: 25±10℃
Dimensions and Weight: 320mm×250mm×160mm 5.5kg
