1、 Introduction to the device

The JCQ-3 lightning arrester monitor adopts a pointer display to show the leakage current during the operation of the lightning arrester, and is equipped with a leakage current alarm light. When the leakage current reaches the threshold, the alarm light will light up to serve as a warning; The electromagnetic counter dial operates during lightning strikes and records the number of lightning strikes for easy reading.   

2、 Technical parameters of the device

Measurement range: 0-3mA

Measurement accuracy: standard reading ± standard reading * 5%;

Dial display: 0-1 mA green, 1-2 mA yellow, 2-3 mA red;

Alarm light: The alarm light is on when the leakage current is greater than 1mA;

Electromagnetic counter: The counter operates when the impulse current is greater than or equal to 50A.

3、 Equipment usage conditions

Temperature -40 ℃~+70 ℃

Humidity 0~95% (relative humidity, no condensation)

Atmospheric pressure range of 80kPa~110kPa (special requirements need to be specified in advance when ordering at altitude>1800m)

Vibration horizontal acceleration ≤ 0.2g, vertical acceleration ≤ 0.1g

4、 Appearance dimensions of the device

1. Top image

2. Side view

3. Bottom image

5、 Installation method

When installing the device, the inclination angle between the plane where the monitoring device panel is located and the horizontal plane should be less than 85 ° to avoid water accumulation affecting observation while ensuring that the observer has a good viewing angle on the ground. The fixed installation adopts M10 screws to fix the metal shell base on the metal bracket, and is grounded through the grounding bus (the monitoring device base can also be used as the grounding bus). The other end is connected to the low voltage end of the lightning arrester through the top of the insulator and connected to the electrode with a wire (or aluminum strip). Be sure to install firmly and ensure reliable contact.

Installation Diagram

Performance: Meets the Technical Specification for Smart Substations Part 4: Digital Remote Transmission Meter (Q/GDW 12355.4-2023);  

Power supply: DC24V;

Monitoring: full current, number of actions, resistive current (Z3);

Display: Electromagnetic counter and ammeter;

Ampere meter range (L): 3:3mA; 5：5mA；10:10mA;  

2mS square wave impulse current withstand (F): 1: ＜ 1200A; 2：[1200A,2500A]；

Communication method: RS485;

Communication protocol: MODBUS-RTU;

装置使用条件：

温度      -40℃~+70℃

湿度      0~95%（相对湿度，不结露）

大气压强     80kPa~110kPa（海拔>1800m时订货需事先说明特殊要求）

振动       水平加速度≤0.2g，垂直加速度≤0.1g