It has five specifications:

JCQ1-10/600 is suitable for voltage levels of 6-110kV.

JCQ1-10/800 is suitable for voltage levels of 110~220kV.

JCQ1-10/1000 is suitable for a voltage level of 350kV.

JCQ1-20/1500 and JCQ1-20/2000 are suitable for 500kV voltage levels.

Models with the suffix "B" are monitors with alarm outlets.

Terms of Use

The JCQ1 series lightning arrester operation monitor is used in the same environmental conditions as the connected lightning arrester, with an altitude not exceeding 3000m and an ambient temperature of -40 ℃~+40 ℃. It is not suitable for gas with severe corrosion of metal and insulation parts, areas with severe pollution and severe vibration. If there are special requirements, they can be jointly negotiated and determined.

Structure and Performance

The JCQ1 operation monitor is mainly composed of nonlinear resistors, electromagnetic counters, milliammeters, relays, and some electronic components. Under normal operating voltage, the change in leakage current through the lightning arrester and monitor is measured by the milliampere meter in the monitor. When lightning waves, operation waves, or power frequency overvoltages flow through the lightning arrester and monitoring meter, the strong action current will be transferred from the leakage current measurement circuit to the counter circuit. The milliampere meter is protected, and the counter part uses the energy of the passing lightning waves, operation waves, or power frequency overvoltages to record the number of actions and trigger an alarm.

The monitor has three functions: continuous monitoring of changes in leakage current, number of actions, and alarm during operation. It has high sensitivity, accuracy, reliability, large current capacity, wide range of applicable voltage levels, clear and obvious display, lightweight and reasonable structure, beautiful and generous appearance, reliable sealing, and easy installation and use. It is especially suitable for use in ultra-high voltage, large capacity power systems, and areas with strong electricity, frequent lightning strikes, and frequent actions.

4、 Electrical parameters

Installation

Refer to the external drawing for installation. The operation monitor is connected in series between the lightning arrester and the ground. During installation, first install the monitor with M10 × 40 bolts near the lightning arrester base for easy testing and observation. Connect the grounding busbar, and then connect the high-voltage output terminal with M10 × 30 bolts and busbar to the two φ 15 installation holes on the insulation base of the lightning arrester. The installed monitor should not have any obvious tilting phenomenon. At this point, record the number indicated by the counter or adjust it to zero to put it into operation. Record the leakage current value (milliampere meter reading) after the power grid is energized for future comparative analysis.

6、 User Notice

Before and after 1-2 years of operation, the monitor should undergo a simple on-site inspection, which includes:

(1) Measure the resistance value between the high-voltage output terminal of the monitor and the ground with a multimeter. When the battery voltage of the multimeter is sufficient, the monitor should be at several tens of K Ω. There should be no short circuits or open circuits, otherwise the leakage current measurement function will fail.

(2) Using a simple method to detect the performance of the monitor's actions

Connect one 1000V shaker and two 600V 10 μ F capacitors in parallel.

Testing steps: First, rotate the shaking table to charge the capacitor. After the charging is stable, while maintaining the shaking table speed, disconnect the charging circuit. Then quickly discharge the fully charged capacitor to both ends of the monitor once. The counter should record once. If it can operate accurately and reliably for 10 consecutive tests, it is considered that the monitor has good performance. Otherwise, there may be problems and maintenance or replacement should be carried out.

2. If the pointer on the monitor does not point to zero and the user needs to reset it to zero, they can adjust it according to item (2) of Article 1, or use the existing number on the counter as the starting base for recording and accumulate the number of actions of the lightning arrester.

3. After the monitor is put into operation, record the reading of the milliampere meter for comparison and analysis when the monitor conducts regular inspections in the future (the surface condition of the lightning arrester is closely related to the leakage current, and attention should be paid to data analysis).

When removing the monitor from the circuit, the high-voltage end of the monitor should be reliably grounded with a wire first, and then the monitor should be removed. After the maintenance is completed, it can only be reinstalled after passing the inspection, and then the grounding wire can be removed. Violation of these regulations may pose a risk to the personal safety of operators.

5. During installation, please note that the lead tension of the high-voltage end of the monitor should not exceed 100N. The 6 M6 × 20 bolts on the bottom plate should not be loosened arbitrarily to avoid damaging the product seal.

6. If the user is unable to use the product due to poor manufacturing quality within two years from the date of shipment under the prescribed conditions, our factory is responsible for the "three guarantees".

JCQ1 type lightning arrester operation monitor